//     Underscore.js 1.5.1
//     http://underscorejs.org
//     (c) 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `global` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Establish the object that gets returned to break out of a loop iteration.
  var breaker = {};

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var
    push             = ArrayProto.push,
    slice            = ArrayProto.slice,
    concat           = ArrayProto.concat,
    toString         = ObjProto.toString,
    hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeForEach      = ArrayProto.forEach,
    nativeMap          = ArrayProto.map,
    nativeReduce       = ArrayProto.reduce,
    nativeReduceRight  = ArrayProto.reduceRight,
    nativeFilter       = ArrayProto.filter,
    nativeEvery        = ArrayProto.every,
    nativeSome         = ArrayProto.some,
    nativeIndexOf      = ArrayProto.indexOf,
    nativeLastIndexOf  = ArrayProto.lastIndexOf,
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind;

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in
  // the browser, add `_` as a global object via a string identifier,
  // for Closure Compiler "advanced" mode.
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.5.1';

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles objects with the built-in `forEach`, arrays, and raw objects.
  // Delegates to **ECMAScript 5**'s native `forEach` if available.
  var each = _.each = _.forEach = function(obj, iterator, context) {
    if (obj == null) return;
    if (nativeForEach && obj.forEach === nativeForEach) {
      obj.forEach(iterator, context);
    } else if (obj.length === +obj.length) {
      for (var i = 0, l = obj.length; i < l; i++) {
        if (iterator.call(context, obj[i], i, obj) === breaker) return;
      }
    } else {
      for (var key in obj) {
        if (_.has(obj, key)) {
          if (iterator.call(context, obj[key], key, obj) === breaker) return;
        }
      }
    }
  };

  // Return the results of applying the iterator to each element.
  // Delegates to **ECMAScript 5**'s native `map` if available.
  _.map = _.collect = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
    each(obj, function(value, index, list) {
      results.push(iterator.call(context, value, index, list));
    });
    return results;
  };

  var reduceError = 'Reduce of empty array with no initial value';

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduce && obj.reduce === nativeReduce) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
    }
    each(obj, function(value, index, list) {
      if (!initial) {
        memo = value;
        initial = true;
      } else {
        memo = iterator.call(context, memo, value, index, list);
      }
    });
    if (!initial) throw new TypeError(reduceError);
    return memo;
  };

  // The right-associative version of reduce, also known as `foldr`.
  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
    }
    var length = obj.length;
    if (length !== +length) {
      var keys = _.keys(obj);
      length = keys.length;
    }
    each(obj, function(value, index, list) {
      index = keys ? keys[--length] : --length;
      if (!initial) {
        memo = obj[index];
        initial = true;
      } else {
        memo = iterator.call(context, memo, obj[index], index, list);
      }
    });
    if (!initial) throw new TypeError(reduceError);
    return memo;
  };

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, iterator, context) {
    var result;
    any(obj, function(value, index, list) {
      if (iterator.call(context, value, index, list)) {
        result = value;
        return true;
      }
    });
    return result;
  };

  // Return all the elements that pass a truth test.
  // Delegates to **ECMAScript 5**'s native `filter` if available.
  // Aliased as `select`.
  _.filter = _.select = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
    each(obj, function(value, index, list) {
      if (iterator.call(context, value, index, list)) results.push(value);
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, iterator, context) {
    return _.filter(obj, function(value, index, list) {
      return !iterator.call(context, value, index, list);
    }, context);
  };

  // Determine whether all of the elements match a truth test.
  // Delegates to **ECMAScript 5**'s native `every` if available.
  // Aliased as `all`.
  _.every = _.all = function(obj, iterator, context) {
    iterator || (iterator = _.identity);
    var result = true;
    if (obj == null) return result;
    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
    each(obj, function(value, index, list) {
      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if at least one element in the object matches a truth test.
  // Delegates to **ECMAScript 5**'s native `some` if available.
  // Aliased as `any`.
  var any = _.some = _.any = function(obj, iterator, context) {
    iterator || (iterator = _.identity);
    var result = false;
    if (obj == null) return result;
    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
    each(obj, function(value, index, list) {
      if (result || (result = iterator.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if the array or object contains a given value (using `===`).
  // Aliased as `include`.
  _.contains = _.include = function(obj, target) {
    if (obj == null) return false;
    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
    return any(obj, function(value) {
      return value === target;
    });
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    var isFunc = _.isFunction(method);
    return _.map(obj, function(value) {
      return (isFunc ? method : value[method]).apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, function(value){ return value[key]; });
  };

  // Convenience version of a common use case of `filter`: selecting only objects
  // containing specific `key:value` pairs.
  _.where = function(obj, attrs, first) {
    if (_.isEmpty(attrs)) return first ? void 0 : [];
    return _[first ? 'find' : 'filter'](obj, function(value) {
      for (var key in attrs) {
        if (attrs[key] !== value[key]) return false;
      }
      return true;
    });
  };

  // Convenience version of a common use case of `find`: getting the first object
  // containing specific `key:value` pairs.
  _.findWhere = function(obj, attrs) {
    return _.where(obj, attrs, true);
  };

  // Return the maximum element or (element-based computation).
  // Can't optimize arrays of integers longer than 65,535 elements.
  // See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797)
  _.max = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
      return Math.max.apply(Math, obj);
    }
    if (!iterator && _.isEmpty(obj)) return -Infinity;
    var result = {computed : -Infinity, value: -Infinity};
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      computed > result.computed && (result = {value : value, computed : computed});
    });
    return result.value;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
      return Math.min.apply(Math, obj);
    }
    if (!iterator && _.isEmpty(obj)) return Infinity;
    var result = {computed : Infinity, value: Infinity};
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      computed < result.computed && (result = {value : value, computed : computed});
    });
    return result.value;
  };

  // Shuffle an array.
  _.shuffle = function(obj) {
    var rand;
    var index = 0;
    var shuffled = [];
    each(obj, function(value) {
      rand = _.random(index++);
      shuffled[index - 1] = shuffled[rand];
      shuffled[rand] = value;
    });
    return shuffled;
  };

  // An internal function to generate lookup iterators.
  var lookupIterator = function(value) {
    return _.isFunction(value) ? value : function(obj){ return obj[value]; };
  };

  // Sort the object's values by a criterion produced by an iterator.
  _.sortBy = function(obj, value, context) {
    var iterator = lookupIterator(value);
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value : value,
        index : index,
        criteria : iterator.call(context, value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria;
      var b = right.criteria;
      if (a !== b) {
        if (a > b || a === void 0) return 1;
        if (a < b || b === void 0) return -1;
      }
      return left.index < right.index ? -1 : 1;
    }), 'value');
  };

  // An internal function used for aggregate "group by" operations.
  var group = function(obj, value, context, behavior) {
    var result = {};
    var iterator = lookupIterator(value == null ? _.identity : value);
    each(obj, function(value, index) {
      var key = iterator.call(context, value, index, obj);
      behavior(result, key, value);
    });
    return result;
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = function(obj, value, context) {
    return group(obj, value, context, function(result, key, value) {
      (_.has(result, key) ? result[key] : (result[key] = [])).push(value);
    });
  };

  // Counts instances of an object that group by a certain criterion. Pass
  // either a string attribute to count by, or a function that returns the
  // criterion.
  _.countBy = function(obj, value, context) {
    return group(obj, value, context, function(result, key) {
      if (!_.has(result, key)) result[key] = 0;
      result[key]++;
    });
  };

  // Use a comparator function to figure out the smallest index at which
  // an object should be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iterator, context) {
    iterator = iterator == null ? _.identity : lookupIterator(iterator);
    var value = iterator.call(context, obj);
    var low = 0, high = array.length;
    while (low < high) {
      var mid = (low + high) >>> 1;
      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
    }
    return low;
  };

  // Safely create a real, live array from anything iterable.
  _.toArray = function(obj) {
    if (!obj) return [];
    if (_.isArray(obj)) return slice.call(obj);
    if (obj.length === +obj.length) return _.map(obj, _.identity);
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    if (obj == null) return 0;
    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head` and `take`. The **guard** check
  // allows it to work with `_.map`.
  _.first = _.head = _.take = function(array, n, guard) {
    if (array == null) return void 0;
    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
  };

  // Returns everything but the last entry of the array. Especially useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N. The **guard** check allows it to work with
  // `_.map`.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array. The **guard** check allows it to work with `_.map`.
  _.last = function(array, n, guard) {
    if (array == null) return void 0;
    if ((n != null) && !guard) {
      return slice.call(array, Math.max(array.length - n, 0));
    } else {
      return array[array.length - 1];
    }
  };

  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
  // Especially useful on the arguments object. Passing an **n** will return
  // the rest N values in the array. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = _.drop = function(array, n, guard) {
    return slice.call(array, (n == null) || guard ? 1 : n);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, _.identity);
  };

  // Internal implementation of a recursive `flatten` function.
  var flatten = function(input, shallow, output) {
    if (shallow && _.every(input, _.isArray)) {
      return concat.apply(output, input);
    }
    each(input, function(value) {
      if (_.isArray(value) || _.isArguments(value)) {
        shallow ? push.apply(output, value) : flatten(value, shallow, output);
      } else {
        output.push(value);
      }
    });
    return output;
  };

  // Return a completely flattened version of an array.
  _.flatten = function(array, shallow) {
    return flatten(array, shallow, []);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    return _.difference(array, slice.call(arguments, 1));
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iterator, context) {
    if (_.isFunction(isSorted)) {
      context = iterator;
      iterator = isSorted;
      isSorted = false;
    }
    var initial = iterator ? _.map(array, iterator, context) : array;
    var results = [];
    var seen = [];
    each(initial, function(value, index) {
      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
        seen.push(value);
        results.push(array[index]);
      }
    });
    return results;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = function() {
    return _.uniq(_.flatten(arguments, true));
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersection = function(array) {
    var rest = slice.call(arguments, 1);
    return _.filter(_.uniq(array), function(item) {
      return _.every(rest, function(other) {
        return _.indexOf(other, item) >= 0;
      });
    });
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = function(array) {
    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
    return _.filter(array, function(value){ return !_.contains(rest, value); });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function() {
    var length = _.max(_.pluck(arguments, "length").concat(0));
    var results = new Array(length);
    for (var i = 0; i < length; i++) {
      results[i] = _.pluck(arguments, '' + i);
    }
    return results;
  };

  // Converts lists into objects. Pass either a single array of `[key, value]`
  // pairs, or two parallel arrays of the same length -- one of keys, and one of
  // the corresponding values.
  _.object = function(list, values) {
    if (list == null) return {};
    var result = {};
    for (var i = 0, l = list.length; i < l; i++) {
      if (values) {
        result[list[i]] = values[i];
      } else {
        result[list[i][0]] = list[i][1];
      }
    }
    return result;
  };

  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
  // we need this function. Return the position of the first occurrence of an
  // item in an array, or -1 if the item is not included in the array.
  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = function(array, item, isSorted) {
    if (array == null) return -1;
    var i = 0, l = array.length;
    if (isSorted) {
      if (typeof isSorted == 'number') {
        i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted);
      } else {
        i = _.sortedIndex(array, item);
        return array[i] === item ? i : -1;
      }
    }
    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
    for (; i < l; i++) if (array[i] === item) return i;
    return -1;
  };

  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
  _.lastIndexOf = function(array, item, from) {
    if (array == null) return -1;
    var hasIndex = from != null;
    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
    }
    var i = (hasIndex ? from : array.length);
    while (i--) if (array[i] === item) return i;
    return -1;
  };

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (arguments.length <= 1) {
      stop = start || 0;
      start = 0;
    }
    step = arguments[2] || 1;

    var len = Math.max(Math.ceil((stop - start) / step), 0);
    var idx = 0;
    var range = new Array(len);

    while(idx < len) {
      range[idx++] = start;
      start += step;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Reusable constructor function for prototype setting.
  var ctor = function(){};

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
  // available.
  _.bind = function(func, context) {
    var args, bound;
    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    if (!_.isFunction(func)) throw new TypeError;
    args = slice.call(arguments, 2);
    return bound = function() {
      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
      ctor.prototype = func.prototype;
      var self = new ctor;
      ctor.prototype = null;
      var result = func.apply(self, args.concat(slice.call(arguments)));
      if (Object(result) === result) return result;
      return self;
    };
  };

  // Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context.
  _.partial = function(func) {
    var args = slice.call(arguments, 1);
    return function() {
      return func.apply(this, args.concat(slice.call(arguments)));
    };
  };

  // Bind all of an object's methods to that object. Useful for ensuring that
  // all callbacks defined on an object belong to it.
  _.bindAll = function(obj) {
    var funcs = slice.call(arguments, 1);
    if (funcs.length === 0) throw new Error("bindAll must be passed function names");
    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memo = {};
    hasher || (hasher = _.identity);
    return function() {
      var key = hasher.apply(this, arguments);
      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
    };
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){ return func.apply(null, args); }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = function(func) {
    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
  };

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time. Normally, the throttled function will run
  // as much as it can, without ever going more than once per `wait` duration;
  // but if you'd like to disable the execution on the leading edge, pass
  // `{leading: false}`. To disable execution on the trailing edge, ditto.
  _.throttle = function(func, wait, options) {
    var context, args, result;
    var timeout = null;
    var previous = 0;
    options || (options = {});
    var later = function() {
      previous = options.leading === false ? 0 : new Date;
      timeout = null;
      result = func.apply(context, args);
    };
    return function() {
      var now = new Date;
      if (!previous && options.leading === false) previous = now;
      var remaining = wait - (now - previous);
      context = this;
      args = arguments;
      if (remaining <= 0) {
        clearTimeout(timeout);
        timeout = null;
        previous = now;
        result = func.apply(context, args);
      } else if (!timeout && options.trailing !== false) {
        timeout = setTimeout(later, remaining);
      }
      return result;
    };
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var result;
    var timeout = null;
    return function() {
      var context = this, args = arguments;
      var later = function() {
        timeout = null;
        if (!immediate) result = func.apply(context, args);
      };
      var callNow = immediate && !timeout;
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
      if (callNow) result = func.apply(context, args);
      return result;
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = function(func) {
    var ran = false, memo;
    return function() {
      if (ran) return memo;
      ran = true;
      memo = func.apply(this, arguments);
      func = null;
      return memo;
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return function() {
      var args = [func];
      push.apply(args, arguments);
      return wrapper.apply(this, args);
    };
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var funcs = arguments;
    return function() {
      var args = arguments;
      for (var i = funcs.length - 1; i >= 0; i--) {
        args = [funcs[i].apply(this, args)];
      }
      return args[0];
    };
  };

  // Returns a function that will only be executed after being called N times.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) {
        return func.apply(this, arguments);
      }
    };
  };

  // Object Functions
  // ----------------

  // Retrieve the names of an object's properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = nativeKeys || function(obj) {
    if (obj !== Object(obj)) throw new TypeError('Invalid object');
    var keys = [];
    for (var key in obj) if (_.has(obj, key)) keys.push(key);
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    var values = [];
    for (var key in obj) if (_.has(obj, key)) values.push(obj[key]);
    return values;
  };

  // Convert an object into a list of `[key, value]` pairs.
  _.pairs = function(obj) {
    var pairs = [];
    for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]);
    return pairs;
  };

  // Invert the keys and values of an object. The values must be serializable.
  _.invert = function(obj) {
    var result = {};
    for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key;
    return result;
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      if (source) {
        for (var prop in source) {
          obj[prop] = source[prop];
        }
      }
    });
    return obj;
  };

  // Return a copy of the object only containing the whitelisted properties.
  _.pick = function(obj) {
    var copy = {};
    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
    each(keys, function(key) {
      if (key in obj) copy[key] = obj[key];
    });
    return copy;
  };

   // Return a copy of the object without the blacklisted properties.
  _.omit = function(obj) {
    var copy = {};
    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
    for (var key in obj) {
      if (!_.contains(keys, key)) copy[key] = obj[key];
    }
    return copy;
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      if (source) {
        for (var prop in source) {
          if (obj[prop] === void 0) obj[prop] = source[prop];
        }
      }
    });
    return obj;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Internal recursive comparison function for `isEqual`.
  var eq = function(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a == 1 / b;
    // A strict comparison is necessary because `null == undefined`.
    if (a == null || b == null) return a === b;
    // Unwrap any wrapped objects.
    if (a instanceof _) a = a._wrapped;
    if (b instanceof _) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className != toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, dates, and booleans are compared by value.
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return a == String(b);
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
        // other numeric values.
        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a == +b;
      // RegExps are compared by their source patterns and flags.
      case '[object RegExp]':
        return a.source == b.source &&
               a.global == b.global &&
               a.multiline == b.multiline &&
               a.ignoreCase == b.ignoreCase;
    }
    if (typeof a != 'object' || typeof b != 'object') return false;
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] == a) return bStack[length] == b;
    }
    // Objects with different constructors are not equivalent, but `Object`s
    // from different frames are.
    var aCtor = a.constructor, bCtor = b.constructor;
    if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
                             _.isFunction(bCtor) && (bCtor instanceof bCtor))) {
      return false;
    }
    // Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);
    var size = 0, result = true;
    // Recursively compare objects and arrays.
    if (className == '[object Array]') {
      // Compare array lengths to determine if a deep comparison is necessary.
      size = a.length;
      result = size == b.length;
      if (result) {
        // Deep compare the contents, ignoring non-numeric properties.
        while (size--) {
          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
        }
      }
    } else {
      // Deep compare objects.
      for (var key in a) {
        if (_.has(a, key)) {
          // Count the expected number of properties.
          size++;
          // Deep compare each member.
          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
        }
      }
      // Ensure that both objects contain the same number of properties.
      if (result) {
        for (key in b) {
          if (_.has(b, key) && !(size--)) break;
        }
        result = !size;
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return result;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b, [], []);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
    for (var key in obj) if (_.has(obj, key)) return false;
    return true;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) == '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    return obj === Object(obj);
  };

  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
    _['is' + name] = function(obj) {
      return toString.call(obj) == '[object ' + name + ']';
    };
  });

  // Define a fallback version of the method in browsers (ahem, IE), where
  // there isn't any inspectable "Arguments" type.
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return !!(obj && _.has(obj, 'callee'));
    };
  }

  // Optimize `isFunction` if appropriate.
  if (typeof (/./) !== 'function') {
    _.isFunction = function(obj) {
      return typeof obj === 'function';
    };
  }

  // Is a given object a finite number?
  _.isFinite = function(obj) {
    return isFinite(obj) && !isNaN(parseFloat(obj));
  };

  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
  _.isNaN = function(obj) {
    return _.isNumber(obj) && obj != +obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Shortcut function for checking if an object has a given property directly
  // on itself (in other words, not on a prototype).
  _.has = function(obj, key) {
    return hasOwnProperty.call(obj, key);
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iterators.
  _.identity = function(value) {
    return value;
  };

  // Run a function **n** times.
  _.times = function(n, iterator, context) {
    var accum = Array(Math.max(0, n));
    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
    return accum;
  };

  // Return a random integer between min and max (inclusive).
  _.random = function(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  };

  // List of HTML entities for escaping.
  var entityMap = {
    escape: {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#x27;',
      '/': '&#x2F;'
    }
  };
  entityMap.unescape = _.invert(entityMap.escape);

  // Regexes containing the keys and values listed immediately above.
  var entityRegexes = {
    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
  };

  // Functions for escaping and unescaping strings to/from HTML interpolation.
  _.each(['escape', 'unescape'], function(method) {
    _[method] = function(string) {
      if (string == null) return '';
      return ('' + string).replace(entityRegexes[method], function(match) {
        return entityMap[method][match];
      });
    };
  });

  // If the value of the named `property` is a function then invoke it with the
  // `object` as context; otherwise, return it.
  _.result = function(object, property) {
    if (object == null) return void 0;
    var value = object[property];
    return _.isFunction(value) ? value.call(object) : value;
  };

  // Add your own custom functions to the Underscore object.
  _.mixin = function(obj) {
    each(_.functions(obj), function(name){
      var func = _[name] = obj[name];
      _.prototype[name] = function() {
        var args = [this._wrapped];
        push.apply(args, arguments);
        return result.call(this, func.apply(_, args));
      };
    });
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g,
    escape      : /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'":      "'",
    '\\':     '\\',
    '\r':     'r',
    '\n':     'n',
    '\t':     't',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  _.template = function(text, data, settings) {
    var render;
    settings = _.defaults({}, settings, _.templateSettings);

    // Combine delimiters into one regular expression via alternation.
    var matcher = new RegExp([
      (settings.escape || noMatch).source,
      (settings.interpolate || noMatch).source,
      (settings.evaluate || noMatch).source
    ].join('|') + '|$', 'g');

    // Compile the template source, escaping string literals appropriately.
    var index = 0;
    var source = "__p+='";
    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
      source += text.slice(index, offset)
        .replace(escaper, function(match) { return '\\' + escapes[match]; });

      if (escape) {
        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
      }
      if (interpolate) {
        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
      }
      if (evaluate) {
        source += "';\n" + evaluate + "\n__p+='";
      }
      index = offset + match.length;
      return match;
    });
    source += "';\n";

    // If a variable is not specified, place data values in local scope.
    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

    source = "var __t,__p='',__j=Array.prototype.join," +
      "print=function(){__p+=__j.call(arguments,'');};\n" +
      source + "return __p;\n";

    try {
      render = new Function(settings.variable || 'obj', '_', source);
    } catch (e) {
      e.source = source;
      throw e;
    }

    if (data) return render(data, _);
    var template = function(data) {
      return render.call(this, data, _);
    };

    // Provide the compiled function source as a convenience for precompilation.
    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

    return template;
  };

  // Add a "chain" function, which will delegate to the wrapper.
  _.chain = function(obj) {
    return _(obj).chain();
  };

  // OOP
  // ---------------
  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.

  // Helper function to continue chaining intermediate results.
  var result = function(obj) {
    return this._chain ? _(obj).chain() : obj;
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      var obj = this._wrapped;
      method.apply(obj, arguments);
      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
      return result.call(this, obj);
    };
  });

  // Add all accessor Array functions to the wrapper.
  each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      return result.call(this, method.apply(this._wrapped, arguments));
    };
  });

  _.extend(_.prototype, {

    // Start chaining a wrapped Underscore object.
    chain: function() {
      this._chain = true;
      return this;
    },

    // Extracts the result from a wrapped and chained object.
    value: function() {
      return this._wrapped;
    }

  });

}).call(this);

define("underscore", (function (global) {
    return function () {
        var ret, fn;
        return ret || global._;
    };
}(this)));

//Copyright (C) 2012 Kory Nunn

//Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

//The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

/*

    This code is not formatted for readability, but rather run-speed and to assist compilers.
    
    However, the code's intention should be transparent.
    
    *** IE SUPPORT ***
    
    If you require this library to work in IE7, add the following after declaring crel.
    
    var testDiv = document.createElement('div'),
        testLabel = document.createElement('label');

    testDiv.setAttribute('class', 'a');    
    testDiv['className'] !== 'a' ? crel.attrMap['class'] = 'className':undefined;
    testDiv.setAttribute('name','a');
    testDiv['name'] !== 'a' ? crel.attrMap['name'] = function(element, value){
        element.id = value;
    }:undefined;
    

    testLabel.setAttribute('for', 'a');
    testLabel['htmlFor'] !== 'a' ? crel.attrMap['for'] = 'htmlFor':undefined;
    
    

*/

(function (root, factory) {
    if (typeof exports === 'object') {
        module.exports = factory();
    } else if (typeof define === 'function' && define.amd) {
        define('crel',factory);
    } else {
        root.crel = factory();
    }
}(this, function () {
    // based on http://stackoverflow.com/questions/384286/javascript-isdom-how-do-you-check-if-a-javascript-object-is-a-dom-object
    var isNode = typeof Node === 'object'
        ? function (object) { return object instanceof Node }
        : function (object) {
            return object
                && typeof object === 'object'
                && typeof object.nodeType === 'number'
                && typeof object.nodeName === 'string';
        };

    function crel(){
        var document = window.document,
            args = arguments, //Note: assigned to a variable to assist compilers. Saves about 40 bytes in closure compiler. Has negligable effect on performance.
            element = document.createElement(args[0]),
            child,
            settings = args[1],
            childIndex = 2,
            argumentsLength = args.length,
            attributeMap = crel.attrMap;

        // shortcut
        if(argumentsLength === 1){
            return element;
        }

        if(typeof settings !== 'object' || isNode(settings)) {
            --childIndex;
            settings = null;
        }

        // shortcut if there is only one child that is a string    
        if((argumentsLength - childIndex) === 1 && typeof args[childIndex] === 'string' && element.textContent !== undefined){
            element.textContent = args[childIndex];
        }else{    
            for(; childIndex < argumentsLength; ++childIndex){
                child = args[childIndex];
                
                if(child == null){
                    continue;
                }
                
                if(!isNode(child)){
                    child = document.createTextNode(child);
                }
                
                element.appendChild(child);
            }
        }
        
        for(var key in settings){
            if(!attributeMap[key]){
                element.setAttribute(key, settings[key]);
            }else{
                var attr = crel.attrMap[key];
                if(typeof attr === 'function'){     
                    attr(element, settings[key]);               
                }else{            
                    element.setAttribute(attr, settings[key]);
                }
            }
        }
        
        return element;
    }
    
    // Used for mapping one kind of attribute to the supported version of that in bad browsers.
    // String referenced so that compilers maintain the property name.
    crel['attrMap'] = {};
    
    // String referenced so that compilers maintain the property name.
    crel["isNode"] = isNode;
    
    return crel;
}));

define('constants',[], function() {
    var constants = {};
    constants.EDITOR_DEFAULT_PADDING = 5;
    constants.fontSize = 14;
    constants.fontFamily = "Menlo, 'Ubuntu Mono', Consolas, 'Courier New',  'Hiragino Sans GB', 'WenQuanYi Micro Hei', 'Microsoft Yahei', sans-serif;";
    return constants;
});
/*!
 * XRegExp-All 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2012 MIT License
 */

// Module systems magic dance
;(function(definition) {
    // Don't turn on strict mode for this function, so it can assign to global
    var self;

    // RequireJS
    if (typeof define === 'function') {
        define('xregexp',definition);
    // CommonJS
    } else if (typeof exports === 'object') {
        self = definition();
        // Use Node.js's `module.exports`. This supports both `require('xregexp')` and
        // `require('xregexp').XRegExp`
        (typeof module === 'object' ? (module.exports = self) : exports).XRegExp = self;
    // <script>
    } else {
        // Create global
        XRegExp = definition();
    }
}(function() {

/*!
 * XRegExp 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2007-2012 MIT License
 */

/**
 * XRegExp provides augmented, extensible regular expressions. You get new syntax, flags, and
 * methods beyond what browsers support natively. XRegExp is also a regex utility belt with tools
 * to make your client-side grepping simpler and more powerful, while freeing you from worrying
 * about pesky cross-browser inconsistencies and the dubious `lastIndex` property.
 */
var XRegExp = (function(undefined) {
    

/* ==============================
 * Private variables
 * ============================== */

    var // ...

// Property name used for extended regex instance data
    REGEX_DATA = 'xregexp',

// Internal reference to the `XRegExp` object
    self,

// Optional features that can be installed and uninstalled
    features = {
        astral: false,
        natives: false
    },

// Store native methods to use and restore ('native' is an ES3 reserved keyword)
    nativ = {
        exec: RegExp.prototype.exec,
        test: RegExp.prototype.test,
        match: String.prototype.match,
        replace: String.prototype.replace,
        split: String.prototype.split
    },

// Storage for fixed/extended native methods
    fixed = {},

// Storage for regexes cached by `XRegExp.cache`
    cache = {},

// Storage for pattern details cached by the `XRegExp` constructor
    patternCache = {},

// Storage for regex syntax tokens added internally or by `XRegExp.addToken`
    tokens = [],

// Token scopes
    defaultScope = 'default',
    classScope = 'class',

// Regexes that match native regex syntax, including octals
    nativeTokens = {
        // Any native multicharacter token in default scope, or any single character
        'default': /\\(?:0(?:[0-3][0-7]{0,2}|[4-7][0-7]?)?|[1-9]\d*|x[\dA-Fa-f]{2}|u[\dA-Fa-f]{4}|c[A-Za-z]|[\s\S])|\(\?[:=!]|[?*+]\?|{\d+(?:,\d*)?}\??|[\s\S]/,
        // Any native multicharacter token in character class scope, or any single character
        'class': /\\(?:[0-3][0-7]{0,2}|[4-7][0-7]?|x[\dA-Fa-f]{2}|u[\dA-Fa-f]{4}|c[A-Za-z]|[\s\S])|[\s\S]/
    },

// Any backreference or dollar-prefixed character in replacement strings
    replacementToken = /\$(?:{([\w$]+)}|(\d\d?|[\s\S]))/g,

// Check for correct `exec` handling of nonparticipating capturing groups
    correctExecNpcg = nativ.exec.call(/()??/, '')[1] === undefined,

// Check for flag y support
    hasNativeY = RegExp.prototype.sticky !== undefined,

// Tracker for known flags, including addon flags
    registeredFlags = {
        g: true,
        i: true,
        m: true,
        y: hasNativeY
    },

// Shortcut to `Object.prototype.toString`
    toString = {}.toString,

// Shortcut to `XRegExp.addToken`
    add;

/* ==============================
 * Private functions
 * ============================== */

/**
 * Attaches named capture data and `XRegExp.prototype` properties to a regex object.
 * @private
 * @param {RegExp} regex Regex to augment.
 * @param {Array} captureNames Array with capture names, or `null`.
 * @param {Boolean} [addProto=false] Whether to attach `XRegExp.prototype` properties. Not
 *   attaching properties avoids a minor performance penalty.
 * @returns {RegExp} Augmented regex.
 */
    function augment(regex, captureNames, addProto) {
        var p;

        if (addProto) {
            // Can't auto-inherit these since the XRegExp constructor returns a nonprimitive value
            if (regex.__proto__) {
                regex.__proto__ = self.prototype;
            } else {
                for (p in self.prototype) {
                    // A `self.prototype.hasOwnProperty(p)` check wouldn't be worth it here, since
                    // this is performance sensitive, and enumerable `Object.prototype` or
                    // `RegExp.prototype` extensions exist on `regex.prototype` anyway
                    regex[p] = self.prototype[p];
                }
            }
        }

        regex[REGEX_DATA] = {captureNames: captureNames};

        return regex;
    }

/**
 * Removes any duplicate characters from the provided string.
 * @private
 * @param {String} str String to remove duplicate characters from.
 * @returns {String} String with any duplicate characters removed.
 */
    function clipDuplicates(str) {
        return nativ.replace.call(str, /([\s\S])(?=[\s\S]*\1)/g, '');
    }

/**
 * Copies a regex object while preserving special properties for named capture and augmenting with
 * `XRegExp.prototype` methods. The copy has a fresh `lastIndex` property (set to zero). Allows
 * adding and removing native flags while copying the regex.
 * @private
 * @param {RegExp} regex Regex to copy.
 * @param {Object} [options] Allows specifying native flags to add or remove while copying the
 *   regex, and whether to attach `XRegExp.prototype` properties.
 * @returns {RegExp} Copy of the provided regex, possibly with modified flags.
 */
    function copy(regex, options) {
        if (!self.isRegExp(regex)) {
            throw new TypeError('Type RegExp expected');
        }

        // Get native flags in use
        var flags = nativ.exec.call(/\/([a-z]*)$/i, String(regex))[1];
        options = options || {};

        if (options.add) {
            flags = clipDuplicates(flags + options.add);
        }

        if (options.remove) {
            // Would need to escape `options.remove` if this was public
            flags = nativ.replace.call(flags, new RegExp('[' + options.remove + ']+', 'g'), '');
        }

        // Augment with `XRegExp.prototype` methods, but use the native `RegExp` constructor and
        // avoid searching for special tokens. That would be wrong for regexes constructed by
        // `RegExp`, and unnecessary for regexes constructed by `XRegExp` because the regex has
        // already undergone the translation to native regex syntax
        regex = augment(
            new RegExp(regex.source, flags),
            hasNamedCapture(regex) ? regex[REGEX_DATA].captureNames.slice(0) : null,
            options.addProto
        );

        return regex;
    }

/**
 * Returns a new copy of the object used to hold extended regex instance data, tailored for a
 * native nonaugmented regex.
 * @private
 * @returns {Object} Object with base regex instance data.
 */
    function getBaseProps() {
        return {captureNames: null};
    }

/**
 * Determines whether a regex has extended instance data used to track capture names.
 * @private
 * @param {RegExp} regex Regex to check.
 * @returns {Boolean} Whether the regex uses named capture.
 */
    function hasNamedCapture(regex) {
        return !!(regex[REGEX_DATA] && regex[REGEX_DATA].captureNames);
    }

/**
 * Returns the first index at which a given value can be found in an array.
 * @private
 * @param {Array} array Array to search.
 * @param {*} value Value to locate in the array.
 * @returns {Number} Zero-based index at which the item is found, or -1.
 */
    function indexOf(array, value) {
        // Use the native array method, if available
        if (Array.prototype.indexOf) {
            return array.indexOf(value);
        }

        var len = array.length, i;

        // Not a very good shim, but good enough for XRegExp's use of it
        for (i = 0; i < len; ++i) {
            if (array[i] === value) {
                return i;
            }
        }

        return -1;
    }

/**
 * Determines whether a value is of the specified type, by resolving its internal [[Class]].
 * @private
 * @param {*} value Object to check.
 * @param {String} type Type to check for, in TitleCase.
 * @returns {Boolean} Whether the object matches the type.
 */
    function isType(value, type) {
        return toString.call(value) === '[object ' + type + ']';
    }

/**
 * Checks whether the next nonignorable token after the specified position is a quantifier.
 * @private
 * @param {String} pattern Pattern to search within.
 * @param {Number} pos Index in `pattern` to search at.
 * @param {String} flags Flags used by the pattern.
 * @returns {Boolean} Whether the next token is a quantifier.
 */
    function isQuantifierNext(pattern, pos, flags) {
        return nativ.test.call(
            flags.indexOf('x') > -1 ?
                // Ignore any leading whitespace, line comments, and inline comments
                /^(?:\s+|#.*|\(\?#[^)]*\))*(?:[?*+]|{\d+(?:,\d*)?})/ :
                // Ignore any leading inline comments
                /^(?:\(\?#[^)]*\))*(?:[?*+]|{\d+(?:,\d*)?})/,
            pattern.slice(pos)
        );
    }

/**
 * Checks for flag-related errors, and strips/applies flags in a leading mode modifier. Offloads
 * the flag preparation logic from the `XRegExp` constructor.
 * @private
 * @param {String} pattern Regex pattern, possibly with a leading mode modifier.
 * @param {String} flags Any combination of flags.
 * @returns {Object} Object with properties `pattern` and `flags`.
 */
    function prepareFlags(pattern, flags) {
        var i;

        // Recent browsers throw on duplicate flags, so copy this behavior for nonnative flags
        if (clipDuplicates(flags) !== flags) {
            throw new SyntaxError('Invalid duplicate regex flag ' + flags);
        }

        // Strip and apply a leading mode modifier with any combination of flags except g or y
        pattern = nativ.replace.call(pattern, /^\(\?([\w$]+)\)/, function($0, $1) {
            if (nativ.test.call(/[gy]/, $1)) {
                throw new SyntaxError('Cannot use flag g or y in mode modifier ' + $0);
            }
            // Allow duplicate flags within the mode modifier
            flags = clipDuplicates(flags + $1);
            return '';
        });

        // Throw on unknown native or nonnative flags
        for (i = 0; i < flags.length; ++i) {
            if (!registeredFlags[flags.charAt(i)]) {
                throw new SyntaxError('Unknown regex flag ' + flags.charAt(i));
            }
        }

        return {
            pattern: pattern,
            flags: flags
        };
    }

/**
 * Prepares an options object from the given value.
 * @private
 * @param {String|Object} value Value to convert to an options object.
 * @returns {Object} Options object.
 */
    function prepareOptions(value) {
        value = value || {};

        if (isType(value, 'String')) {
            value = self.forEach(value, /[^\s,]+/, function(match) {
                this[match] = true;
            }, {});
        }

        return value;
    }

/**
 * Registers a flag so it doesn't throw an 'unknown flag' error.
 * @private
 * @param {String} flag Single-character flag to register.
 */
    function registerFlag(flag) {
        if (!/^[\w$]$/.test(flag)) {
            throw new Error('Flag must be a single character A-Za-z0-9_$');
        }

        registeredFlags[flag] = true;
    }

/**
 * Runs built-in and custom regex syntax tokens in reverse insertion order at the specified
 * position, until a match is found.
 * @private
 * @param {String} pattern Original pattern from which an XRegExp object is being built.
 * @param {String} flags Flags being used to construct the regex.
 * @param {Number} pos Position to search for tokens within `pattern`.
 * @param {Number} scope Regex scope to apply: 'default' or 'class'.
 * @param {Object} context Context object to use for token handler functions.
 * @returns {Object} Object with properties `matchLength`, `output`, and `reparse`; or `null`.
 */
    function runTokens(pattern, flags, pos, scope, context) {
        var i = tokens.length,
            result = null,
            match,
            t;

        // Run in reverse insertion order
        while (i--) {
            t = tokens[i];
            if (
                (t.scope === scope || t.scope === 'all') &&
                (!t.flag || flags.indexOf(t.flag) > -1)
            ) {
                match = self.exec(pattern, t.regex, pos, 'sticky');
                if (match) {
                    result = {
                        matchLength: match[0].length,
                        output: t.handler.call(context, match, scope, flags),
                        reparse: t.reparse
                    };
                    // Finished with token tests
                    break;
                }
            }
        }

        return result;
    }

/**
 * Enables or disables implicit astral mode opt-in.
 * @private
 * @param {Boolean} on `true` to enable; `false` to disable.
 */
    function setAstral(on) {
        // Reset the pattern cache used by the `XRegExp` constructor, since the same pattern and
        // flags might now produce different results
        self.cache.flush('patterns');

        features.astral = on;
    }

/**
 * Enables or disables native method overrides.
 * @private
 * @param {Boolean} on `true` to enable; `false` to disable.
 */
    function setNatives(on) {
        RegExp.prototype.exec = (on ? fixed : nativ).exec;
        RegExp.prototype.test = (on ? fixed : nativ).test;
        String.prototype.match = (on ? fixed : nativ).match;
        String.prototype.replace = (on ? fixed : nativ).replace;
        String.prototype.split = (on ? fixed : nativ).split;

        features.natives = on;
    }

/**
 * Returns the object, or throws an error if it is `null` or `undefined`. This is used to follow
 * the ES5 abstract operation `ToObject`.
 * @private
 * @param {*} value Object to check and return.
 * @returns {*} The provided object.
 */
    function toObject(value) {
        // This matches both `null` and `undefined`
        if (value == null) {
            throw new TypeError('Cannot convert null or undefined to object');
        }

        return value;
    }

/* ==============================
 * Constructor
 * ============================== */

/**
 * Creates an extended regular expression object for matching text with a pattern. Differs from a
 * native regular expression in that additional syntax and flags are supported. The returned object
 * is in fact a native `RegExp` and works with all native methods.
 * @class XRegExp
 * @constructor
 * @param {String|RegExp} pattern Regex pattern string, or an existing regex object to copy.
 * @param {String} [flags] Any combination of flags.
 *   Native flags:
 *     <li>`g` - global
 *     <li>`i` - ignore case
 *     <li>`m` - multiline anchors
 *     <li>`y` - sticky (Firefox 3+)
 *   Additional XRegExp flags:
 *     <li>`n` - explicit capture
 *     <li>`s` - dot matches all (aka singleline)
 *     <li>`x` - free-spacing and line comments (aka extended)
 *     <li>`A` - astral (requires the Unicode Base addon)
 *   Flags cannot be provided when constructing one `RegExp` from another.
 * @returns {RegExp} Extended regular expression object.
 * @example
 *
 * // With named capture and flag x
 * XRegExp('(?<year>  [0-9]{4} ) -?  # year  \n\
 *          (?<month> [0-9]{2} ) -?  # month \n\
 *          (?<day>   [0-9]{2} )     # day   ', 'x');
 *
 * // Providing a regex object copies it. Native regexes are recompiled using native (not XRegExp)
 * // syntax. Copies maintain special properties for named capture, are augmented with
 * // `XRegExp.prototype` methods, and have fresh `lastIndex` properties (set to zero).
 * XRegExp(/regex/);
 */
    self = function(pattern, flags) {
        var context = {
                hasNamedCapture: false,
                captureNames: []
            },
            scope = defaultScope,
            output = '',
            pos = 0,
            result,
            token,
            key;

        if (self.isRegExp(pattern)) {
            if (flags !== undefined) {
                throw new TypeError('Cannot supply flags when copying a RegExp');
            }
            return copy(pattern, {addProto: true});
        }

        // Copy the argument behavior of `RegExp`
        pattern = pattern === undefined ? '' : String(pattern);
        flags = flags === undefined ? '' : String(flags);

        // Cache-lookup key; intentionally using an invalid regex sequence as the separator
        key = pattern + '***' + flags;

        if (!patternCache[key]) {
            // Check for flag-related errors, and strip/apply flags in a leading mode modifier
            result = prepareFlags(pattern, flags);
            pattern = result.pattern;
            flags = result.flags;

            // Use XRegExp's syntax tokens to translate the pattern to a native regex pattern...
            // `pattern.length` may change on each iteration, if tokens use the `reparse` option
            while (pos < pattern.length) {
                do {
                    // Check for custom tokens at the current position
                    result = runTokens(pattern, flags, pos, scope, context);
                    // If the matched token used the `reparse` option, splice its output into the
                    // pattern before running tokens again at the same position
                    if (result && result.reparse) {
                        pattern = pattern.slice(0, pos) +
                            result.output +
                            pattern.slice(pos + result.matchLength);
                    }
                } while (result && result.reparse);

                if (result) {
                    output += result.output;
                    pos += (result.matchLength || 1);
                } else {
                    // Get the native token at the current position
                    token = self.exec(pattern, nativeTokens[scope], pos, 'sticky')[0];
                    output += token;
                    pos += token.length;
                    if (token === '[' && scope === defaultScope) {
                        scope = classScope;
                    } else if (token === ']' && scope === classScope) {
                        scope = defaultScope;
                    }
                }
            }

            patternCache[key] = {
                // Cleanup token cruft: repeated `(?:)(?:)` and leading/trailing `(?:)`
                pattern: nativ.replace.call(output, /\(\?:\)(?=\(\?:\))|^\(\?:\)|\(\?:\)$/g, ''),
                // Strip all but native flags
                flags: nativ.replace.call(flags, /[^gimy]+/g, ''),
                // `context.captureNames` has an item for each capturing group, even if unnamed
                captures: context.hasNamedCapture ? context.captureNames : null
            }
        }

        key = patternCache[key];
        return augment(new RegExp(key.pattern, key.flags), key.captures, /*addProto*/ true);
    };

// Add `RegExp.prototype` to the prototype chain
    self.prototype = new RegExp;

/* ==============================
 * Public properties
 * ============================== */

/**
 * The XRegExp version number.
 * @static
 * @memberOf XRegExp
 * @type String
 */
    self.version = '3.0.0-pre';

/* ==============================
 * Public methods
 * ============================== */

/**
 * Extends XRegExp syntax and allows custom flags. This is used internally and can be used to
 * create XRegExp addons. If more than one token can match the same string, the last added wins.
 * @memberOf XRegExp
 * @param {RegExp} regex Regex object that matches the new token.
 * @param {Function} handler Function that returns a new pattern string (using native regex syntax)
 *   to replace the matched token within all future XRegExp regexes. Has access to persistent
 *   properties of the regex being built, through `this`. Invoked with three arguments:
 *   <li>The match array, with named backreference properties.
 *   <li>The regex scope where the match was found: 'default' or 'class'.
 *   <li>The flags used by the regex, including any flags in a leading mode modifier.
 *   The handler function becomes part of the XRegExp construction process, so be careful not to
 *   construct XRegExps within the function or you will trigger infinite recursion.
 * @param {Object} [options] Options object with optional properties:
 *   <li>`scope` {String} Scope where the token applies: 'default', 'class', or 'all'.
 *   <li>`flag` {String} Single-character flag that triggers the token. This also registers the
 *     flag, which prevents XRegExp from throwing an 'unknown flag' error when the flag is used.
 *   <li>`optionalFlags` {String} Any custom flags checked for within the token `handler` that are
 *     not required to trigger the token. This registers the flags, to prevent XRegExp from
 *     throwing an 'unknown flag' error when any of the flags are used.
 *   <li>`reparse` {Boolean} Whether the `handler` function's output should not be treated as
 *     final, and instead be reparseable by other tokens (including the current token). Allows
 *     token chaining or deferring.
 * @example
 *
 * // Basic usage: Add \a for the ALERT control code
 * XRegExp.addToken(
 *   /\\a/,
 *   function() {return '\\x07';},
 *   {scope: 'all'}
 * );
 * XRegExp('\\a[\\a-\\n]+').test('\x07\n\x07'); // -> true
 *
 * // Add the U (ungreedy) flag from PCRE and RE2, which reverses greedy and lazy quantifiers
 * XRegExp.addToken(
 *   /([?*+]|{\d+(?:,\d*)?})(\??)/,
 *   function(match) {return match[1] + (match[2] ? '' : '?');},
 *   {flag: 'U'}
 * );
 * XRegExp('a+', 'U').exec('aaa')[0]; // -> 'a'
 * XRegExp('a+?', 'U').exec('aaa')[0]; // -> 'aaa'
 */
    self.addToken = function(regex, handler, options) {
        options = options || {};
        var optionalFlags = options.optionalFlags, i;

        if (options.flag) {
            registerFlag(options.flag);
        }

        if (optionalFlags) {
            optionalFlags = nativ.split.call(optionalFlags, '');
            for (i = 0; i < optionalFlags.length; ++i) {
                registerFlag(optionalFlags[i]);
            }
        }

        // Add to the private list of syntax tokens
        tokens.push({
            regex: copy(regex, {add: 'g' + (hasNativeY ? 'y' : '')}),
            handler: handler,
            scope: options.scope || defaultScope,
            flag: options.flag,
            reparse: options.reparse
        });

        // Reset the pattern cache used by the `XRegExp` constructor, since the same pattern and
        // flags might now produce different results
        self.cache.flush('patterns');
    };

/**
 * Caches and returns the result of calling `XRegExp(pattern, flags)`. On any subsequent call with
 * the same pattern and flag combination, the cached copy of the regex is returned.
 * @memberOf XRegExp
 * @param {String} pattern Regex pattern string.
 * @param {String} [flags] Any combination of XRegExp flags.
 * @returns {RegExp} Cached XRegExp object.
 * @example
 *
 * while (match = XRegExp.cache('.', 'gs').exec(str)) {
 *   // The regex is compiled once only
 * }
 */
    self.cache = function(pattern, flags) {
        var key = pattern + '***' + (flags || '');
        return cache[key] || (cache[key] = self(pattern, flags));
    };

// Intentionally undocumented
    self.cache.flush = function(cacheName) {
        if (cacheName === 'patterns') {
            // Flush the pattern cache used by the `XRegExp` constructor
            patternCache = {};
        } else {
            // Flush the regex object cache populated by `XRegExp.cache`
            cache = {};
        }
    };

/**
 * Escapes any regular expression metacharacters, for use when matching literal strings. The result
 * can safely be used at any point within a regex that uses any flags.
 * @memberOf XRegExp
 * @param {String} str String to escape.
 * @returns {String} String with regex metacharacters escaped.
 * @example
 *
 * XRegExp.escape('Escaped? <.>');
 * // -> 'Escaped\?\ <\.>'
 */
    self.escape = function(str) {
        return nativ.replace.call(toObject(str), /[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
    };

/**
 * Executes a regex search in a specified string. Returns a match array or `null`. If the provided
 * regex uses named capture, named backreference properties are included on the match array.
 * Optional `pos` and `sticky` arguments specify the search start position, and whether the match
 * must start at the specified position only. The `lastIndex` property of the provided regex is not
 * used, but is updated for compatibility. Also fixes browser bugs compared to the native
 * `RegExp.prototype.exec` and can be used reliably cross-browser.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {Number} [pos=0] Zero-based index at which to start the search.
 * @param {Boolean|String} [sticky=false] Whether the match must start at the specified position
 *   only. The string `'sticky'` is accepted as an alternative to `true`.
 * @returns {Array} Match array with named backreference properties, or `null`.
 * @example
 *
 * // Basic use, with named backreference
 * var match = XRegExp.exec('U+2620', XRegExp('U\\+(?<hex>[0-9A-F]{4})'));
 * match.hex; // -> '2620'
 *
 * // With pos and sticky, in a loop
 * var pos = 2, result = [], match;
 * while (match = XRegExp.exec('<1><2><3><4>5<6>', /<(\d)>/, pos, 'sticky')) {
 *   result.push(match[1]);
 *   pos = match.index + match[0].length;
 * }
 * // result -> ['2', '3', '4']
 */
    self.exec = function(str, regex, pos, sticky) {
        var cacheFlags = 'g', match, r2;

        if (hasNativeY && (sticky || (regex.sticky && sticky !== false))) {
            cacheFlags += 'y';
        }

        regex[REGEX_DATA] = regex[REGEX_DATA] || getBaseProps();

        // Shares cached copies with `XRegExp.match`/`replace`
        r2 = regex[REGEX_DATA][cacheFlags] || (
            regex[REGEX_DATA][cacheFlags] = copy(regex, {
                add: cacheFlags,
                remove: sticky === false ? 'y' : ''
            })
        );

        r2.lastIndex = pos = pos || 0;

        // Fixed `exec` required for `lastIndex` fix, named backreferences, etc.
        match = fixed.exec.call(r2, str);

        if (sticky && match && match.index !== pos) {
            match = null;
        }

        if (regex.global) {
            regex.lastIndex = match ? r2.lastIndex : 0;
        }

        return match;
    };

/**
 * Executes a provided function once per regex match.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {Function} callback Function to execute for each match. Invoked with four arguments:
 *   <li>The match array, with named backreference properties.
 *   <li>The zero-based match index.
 *   <li>The string being traversed.
 *   <li>The regex object being used to traverse the string.
 * @param {*} [context] Object to use as `this` when executing `callback`.
 * @returns {*} Provided `context` object.
 * @example
 *
 * // Extracts every other digit from a string
 * XRegExp.forEach('1a2345', /\d/, function(match, i) {
 *   if (i % 2) this.push(+match[0]);
 * }, []);
 * // -> [2, 4]
 */
    self.forEach = function(str, regex, callback, context) {
        var pos = 0,
            i = -1,
            match;

        while ((match = self.exec(str, regex, pos))) {
            // Because `regex` is provided to `callback`, the function can use the deprecated/
            // nonstandard `RegExp.prototype.compile` to mutate the regex. However, since
            // `XRegExp.exec` doesn't use `lastIndex` to set the search position, this can't lead
            // to an infinite loop, at least. Actually, because of the way `XRegExp.exec` caches
            // globalized versions of regexes, mutating the regex will not have any effect on the
            // iteration or matched strings, which is a nice side effect that brings extra safety
            callback.call(context, match, ++i, str, regex);

            pos = match.index + (match[0].length || 1);
        }

        return context;
    };

/**
 * Copies a regex object and adds flag `g`. The copy maintains special properties for named
 * capture, is augmented with `XRegExp.prototype` methods, and has a fresh `lastIndex` property
 * (set to zero). Native regexes are not recompiled using XRegExp syntax.
 * @memberOf XRegExp
 * @param {RegExp} regex Regex to globalize.
 * @returns {RegExp} Copy of the provided regex with flag `g` added.
 * @example
 *
 * var globalCopy = XRegExp.globalize(/regex/);
 * globalCopy.global; // -> true
 */
    self.globalize = function(regex) {
        return copy(regex, {add: 'g', addProto: true});
    };

/**
 * Installs optional features according to the specified options. Can be undone using
 * {@link #XRegExp.uninstall}.
 * @memberOf XRegExp
 * @param {Object|String} options Options object or string.
 * @example
 *
 * // With an options object
 * XRegExp.install({
 *   // Enables support for astral code points in Unicode addons (implicitly sets flag A)
 *   astral: true,
 *
 *   // Overrides native regex methods with fixed/extended versions that support named
 *   // backreferences and fix numerous cross-browser bugs
 *   natives: true
 * });
 *
 * // With an options string
 * XRegExp.install('astral natives');
 */
    self.install = function(options) {
        options = prepareOptions(options);

        if (!features.astral && options.astral) {
            setAstral(true);
        }

        if (!features.natives && options.natives) {
            setNatives(true);
        }
    };

/**
 * Checks whether an individual optional feature is installed.
 * @memberOf XRegExp
 * @param {String} feature Name of the feature to check. One of:
 *   <li>`natives`
 *   <li>`astral`
 * @returns {Boolean} Whether the feature is installed.
 * @example
 *
 * XRegExp.isInstalled('natives');
 */
    self.isInstalled = function(feature) {
        return !!(features[feature]);
    };

/**
 * Returns `true` if an object is a regex; `false` if it isn't. This works correctly for regexes
 * created in another frame, when `instanceof` and `constructor` checks would fail.
 * @memberOf XRegExp
 * @param {*} value Object to check.
 * @returns {Boolean} Whether the object is a `RegExp` object.
 * @example
 *
 * XRegExp.isRegExp('string'); // -> false
 * XRegExp.isRegExp(/regex/i); // -> true
 * XRegExp.isRegExp(RegExp('^', 'm')); // -> true
 * XRegExp.isRegExp(XRegExp('(?s).')); // -> true
 */
    self.isRegExp = function(value) {
        return toString.call(value) === '[object RegExp]';
        //return isType(value, 'RegExp');
    };

/**
 * Returns the first matched string, or in global mode, an array containing all matched strings.
 * This is essentially a more convenient re-implementation of `String.prototype.match` that gives
 * the result types you actually want (string instead of `exec`-style array in match-first mode,
 * and an empty array instead of `null` when no matches are found in match-all mode). It also lets
 * you override flag g and ignore `lastIndex`, and fixes browser bugs.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {String} [scope='one'] Use 'one' to return the first match as a string. Use 'all' to
 *   return an array of all matched strings. If not explicitly specified and `regex` uses flag g,
 *   `scope` is 'all'.
 * @returns {String|Array} In match-first mode: First match as a string, or `null`. In match-all
 *   mode: Array of all matched strings, or an empty array.
 * @example
 *
 * // Match first
 * XRegExp.match('abc', /\w/); // -> 'a'
 * XRegExp.match('abc', /\w/g, 'one'); // -> 'a'
 * XRegExp.match('abc', /x/g, 'one'); // -> null
 *
 * // Match all
 * XRegExp.match('abc', /\w/g); // -> ['a', 'b', 'c']
 * XRegExp.match('abc', /\w/, 'all'); // -> ['a', 'b', 'c']
 * XRegExp.match('abc', /x/, 'all'); // -> []
 */
    self.match = function(str, regex, scope) {
        var global = (regex.global && scope !== 'one') || scope === 'all',
            cacheFlags = (global ? 'g' : '') + (regex.sticky ? 'y' : ''),
            result,
            r2;

        regex[REGEX_DATA] = regex[REGEX_DATA] || getBaseProps();

        // Shares cached copies with `XRegExp.exec`/`replace`
        r2 = regex[REGEX_DATA][cacheFlags || 'noGY'] || (
            regex[REGEX_DATA][cacheFlags || 'noGY'] = copy(regex, {
                add: cacheFlags,
                remove: scope === 'one' ? 'g' : ''
            })
        );

        result = nativ.match.call(toObject(str), r2);

        if (regex.global) {
            regex.lastIndex = (
                (scope === 'one' && result) ?
                    // Can't use `r2.lastIndex` since `r2` is nonglobal in this case
                    (result.index + result[0].length) : 0
            );
        }

        return global ? (result || []) : (result && result[0]);
    };

/**
 * Retrieves the matches from searching a string using a chain of regexes that successively search
 * within previous matches. The provided `chain` array can contain regexes and objects with `regex`
 * and `backref` properties. When a backreference is specified, the named or numbered backreference
 * is passed forward to the next regex or returned.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {Array} chain Regexes that each search for matches within preceding results.
 * @returns {Array} Matches by the last regex in the chain, or an empty array.
 * @example
 *
 * // Basic usage; matches numbers within <b> tags
 * XRegExp.matchChain('1 <b>2</b> 3 <b>4 a 56</b>', [
 *   XRegExp('(?is)<b>.*?</b>'),
 *   /\d+/
 * ]);
 * // -> ['2', '4', '56']
 *
 * // Passing forward and returning specific backreferences
 * html = '<a href="http://xregexp.com/api/">XRegExp</a>\
 *         <a href="http://www.google.com/">Google</a>';
 * XRegExp.matchChain(html, [
 *   {regex: /<a href="([^"]+)">/i, backref: 1},
 *   {regex: XRegExp('(?i)^https?://(?<domain>[^/?#]+)'), backref: 'domain'}
 * ]);
 * // -> ['xregexp.com', 'www.google.com']
 */
    self.matchChain = function(str, chain) {
        return (function recurseChain(values, level) {
            var item = chain[level].regex ? chain[level] : {regex: chain[level]},
                matches = [],
                addMatch = function(match) {
                    if (item.backref) {
                        /* Safari 4.0.5 (but not 5.0.5+) inappropriately uses sparse arrays to hold
                         * the `undefined`s for backreferences to nonparticipating capturing
                         * groups. In such cases, a `hasOwnProperty` or `in` check on its own would
                         * inappropriately throw the exception, so also check if the backreference
                         * is a number that is within the bounds of the array.
                         */
                        if (!(match.hasOwnProperty(item.backref) || +item.backref < match.length)) {
                            throw new ReferenceError('Backreference to undefined group: ' + item.backref);
                        }

                        matches.push(match[item.backref] || '');
                    } else {
                        matches.push(match[0]);
                    }
                },
                i;

            for (i = 0; i < values.length; ++i) {
                self.forEach(values[i], item.regex, addMatch);
            }

            return ((level === chain.length - 1) || !matches.length) ?
                matches :
                recurseChain(matches, level + 1);
        }([str], 0));
    };

/**
 * Returns a new string with one or all matches of a pattern replaced. The pattern can be a string
 * or regex, and the replacement can be a string or a function to be called for each match. To
 * perform a global search and replace, use the optional `scope` argument or include flag g if
 * using a regex. Replacement strings can use `${n}` for named and numbered backreferences.
 * Replacement functions can use named backreferences via `arguments[0].name`. Also fixes browser
 * bugs compared to the native `String.prototype.replace` and can be used reliably cross-browser.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp|String} search Search pattern to be replaced.
 * @param {String|Function} replacement Replacement string or a function invoked to create it.
 *   Replacement strings can include special replacement syntax:
 *     <li>$$ - Inserts a literal $ character.
 *     <li>$&, $0 - Inserts the matched substring.
 *     <li>$` - Inserts the string that precedes the matched substring (left context).
 *     <li>$' - Inserts the string that follows the matched substring (right context).
 *     <li>$n, $nn - Where n/nn are digits referencing an existent capturing group, inserts
 *       backreference n/nn.
 *     <li>${n} - Where n is a name or any number of digits that reference an existent capturing
 *       group, inserts backreference n.
 *   Replacement functions are invoked with three or more arguments:
 *     <li>The matched substring (corresponds to $& above). Named backreferences are accessible as
 *       properties of this first argument.
 *     <li>0..n arguments, one for each backreference (corresponding to $1, $2, etc. above).
 *     <li>The zero-based index of the match within the total search string.
 *     <li>The total string being searched.
 * @param {String} [scope='one'] Use 'one' to replace the first match only, or 'all'. If not
 *   explicitly specified and using a regex with flag g, `scope` is 'all'.
 * @returns {String} New string with one or all matches replaced.
 * @example
 *
 * // Regex search, using named backreferences in replacement string
 * var name = XRegExp('(?<first>\\w+) (?<last>\\w+)');
 * XRegExp.replace('John Smith', name, '${last}, ${first}');
 * // -> 'Smith, John'
 *
 * // Regex search, using named backreferences in replacement function
 * XRegExp.replace('John Smith', name, function(match) {
 *   return match.last + ', ' + match.first;
 * });
 * // -> 'Smith, John'
 *
 * // String search, with replace-all
 * XRegExp.replace('RegExp builds RegExps', 'RegExp', 'XRegExp', 'all');
 * // -> 'XRegExp builds XRegExps'
 */
    self.replace = function(str, search, replacement, scope) {
        var isRegex = self.isRegExp(search),
            global = (search.global && scope !== 'one') || scope === 'all',
            cacheFlags = (global ? 'g' : '') + (search.sticky ? 'y' : ''),
            s2 = search,
            result;

        if (isRegex) {
            search[REGEX_DATA] = search[REGEX_DATA] || getBaseProps();

            // Shares cached copies with `XRegExp.exec`/`match`. Since a copy is used,
            // `search`'s `lastIndex` isn't updated *during* replacement iterations
            s2 = search[REGEX_DATA][cacheFlags || 'noGY'] || (
                search[REGEX_DATA][cacheFlags || 'noGY'] = copy(search, {
                    add: cacheFlags,
                    remove: scope === 'one' ? 'g' : ''
                })
            );
        } else if (global) {
            s2 = new RegExp(self.escape(String(search)), 'g');
        }

        // Fixed `replace` required for named backreferences, etc.
        result = fixed.replace.call(toObject(str), s2, replacement);

        if (isRegex && search.global) {
            // Fixes IE, Safari bug (last tested IE 9, Safari 5.1)
            search.lastIndex = 0;
        }

        return result;
    };

/**
 * Performs batch processing of string replacements. Used like {@link #XRegExp.replace}, but
 * accepts an array of replacement details. Later replacements operate on the output of earlier
 * replacements. Replacement details are accepted as an array with a regex or string to search for,
 * the replacement string or function, and an optional scope of 'one' or 'all'. Uses the XRegExp
 * replacement text syntax, which supports named backreference properties via `${name}`.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {Array} replacements Array of replacement detail arrays.
 * @returns {String} New string with all replacements.
 * @example
 *
 * str = XRegExp.replaceEach(str, [
 *   [XRegExp('(?<name>a)'), 'z${name}'],
 *   [/b/gi, 'y'],
 *   [/c/g, 'x', 'one'], // scope 'one' overrides /g
 *   [/d/, 'w', 'all'],  // scope 'all' overrides lack of /g
 *   ['e', 'v', 'all'],  // scope 'all' allows replace-all for strings
 *   [/f/g, function($0) {
 *     return $0.toUpperCase();
 *   }]
 * ]);
 */
    self.replaceEach = function(str, replacements) {
        var i, r;

        for (i = 0; i < replacements.length; ++i) {
            r = replacements[i];
            str = self.replace(str, r[0], r[1], r[2]);
        }

        return str;
    };

/**
 * Splits a string into an array of strings using a regex or string separator. Matches of the
 * separator are not included in the result array. However, if `separator` is a regex that contains
 * capturing groups, backreferences are spliced into the result each time `separator` is matched.
 * Fixes browser bugs compared to the native `String.prototype.split` and can be used reliably
 * cross-browser.
 * @memberOf XRegExp
 * @param {String} str String to split.
 * @param {RegExp|String} separator Regex or string to use for separating the string.
 * @param {Number} [limit] Maximum number of items to include in the result array.
 * @returns {Array} Array of substrings.
 * @example
 *
 * // Basic use
 * XRegExp.split('a b c', ' ');
 * // -> ['a', 'b', 'c']
 *
 * // With limit
 * XRegExp.split('a b c', ' ', 2);
 * // -> ['a', 'b']
 *
 * // Backreferences in result array
 * XRegExp.split('..word1..', /([a-z]+)(\d+)/i);
 * // -> ['..', 'word', '1', '..']
 */
    self.split = function(str, separator, limit) {
        return fixed.split.call(toObject(str), separator, limit);
    };

/**
 * Executes a regex search in a specified string. Returns `true` or `false`. Optional `pos` and
 * `sticky` arguments specify the search start position, and whether the match must start at the
 * specified position only. The `lastIndex` property of the provided regex is not used, but is
 * updated for compatibility. Also fixes browser bugs compared to the native
 * `RegExp.prototype.test` and can be used reliably cross-browser.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {Number} [pos=0] Zero-based index at which to start the search.
 * @param {Boolean|String} [sticky=false] Whether the match must start at the specified position
 *   only. The string `'sticky'` is accepted as an alternative to `true`.
 * @returns {Boolean} Whether the regex matched the provided value.
 * @example
 *
 * // Basic use
 * XRegExp.test('abc', /c/); // -> true
 *
 * // With pos and sticky
 * XRegExp.test('abc', /c/, 0, 'sticky'); // -> false
 */
    self.test = function(str, regex, pos, sticky) {
        // Do this the easy way :-)
        return !!self.exec(str, regex, pos, sticky);
    };

/**
 * Uninstalls optional features according to the specified options. All optional features start out
 * uninstalled, so this is used to undo the actions of {@link #XRegExp.install}.
 * @memberOf XRegExp
 * @param {Object|String} options Options object or string.
 * @example
 *
 * // With an options object
 * XRegExp.uninstall({
 *   // Disables support for astral code points in Unicode addons
 *   astral: true,
 *
 *   // Restores native regex methods
 *   natives: true
 * });
 *
 * // With an options string
 * XRegExp.uninstall('astral natives');
 */
    self.uninstall = function(options) {
        options = prepareOptions(options);

        if (features.astral && options.astral) {
            setAstral(false);
        }

        if (features.natives && options.natives) {
            setNatives(false);
        }
    };

/**
 * Returns an XRegExp object that is the union of the given patterns. Patterns can be provided as
 * regex objects or strings. Metacharacters are escaped in patterns provided as strings.
 * Backreferences in provided regex objects are automatically renumbered to work correctly within
 * the larger combined pattern. Native flags used by provided regexes are ignored in favor of the
 * `flags` argument.
 * @memberOf XRegExp
 * @param {Array} patterns Regexes and strings to combine.
 * @param {String} [flags] Any combination of XRegExp flags.
 * @returns {RegExp} Union of the provided regexes and strings.
 * @example
 *
 * XRegExp.union(['a+b*c', /(dogs)\1/, /(cats)\1/], 'i');
 * // -> /a\+b\*c|(dogs)\1|(cats)\2/i
 */
    self.union = function(patterns, flags) {
        var parts = /(\()(?!\?)|\\([1-9]\d*)|\\[\s\S]|\[(?:[^\\\]]|\\[\s\S])*]/g,
            output = [],
            numCaptures = 0,
            numPriorCaptures,
            captureNames,
            pattern,
            rewrite = function(match, paren, backref) {
                var name = captureNames[numCaptures - numPriorCaptures];

                // Capturing group
                if (paren) {
                    ++numCaptures;
                    // If the current capture has a name, preserve the name
                    if (name) {
                        return '(?<' + name + '>';
                    }
                // Backreference
                } else if (backref) {
                    // Rewrite the backreference
                    return '\\' + (+backref + numPriorCaptures);
                }

                return match;
            },
            i;

        if (!(isType(patterns, 'Array') && patterns.length)) {
            throw new TypeError('Must provide a nonempty array of patterns to merge');
        }

        for (i = 0; i < patterns.length; ++i) {
            pattern = patterns[i];

            if (self.isRegExp(pattern)) {
                numPriorCaptures = numCaptures;
                captureNames = (pattern[REGEX_DATA] && pattern[REGEX_DATA].captureNames) || [];

                // Rewrite backreferences. Passing to XRegExp dies on octals and ensures patterns
                // are independently valid; helps keep this simple. Named captures are put back
                output.push(nativ.replace.call(self(pattern.source).source, parts, rewrite));
            } else {
                output.push(self.escape(pattern));
            }
        }

        return self(output.join('|'), flags);
    };

/* ==============================
 * Fixed/extended native methods
 * ============================== */

/**
 * Adds named capture support (with backreferences returned as `result.name`), and fixes browser
 * bugs in the native `RegExp.prototype.exec`. Calling `XRegExp.install('natives')` uses this to
 * override the native method. Use via `XRegExp.exec` without overriding natives.
 * @private
 * @param {String} str String to search.
 * @returns {Array} Match array with named backreference properties, or `null`.
 */
    fixed.exec = function(str) {
        var origLastIndex = this.lastIndex,
            match = nativ.exec.apply(this, arguments),
            name,
            r2,
            i;

        if (match) {
            // Fix browsers whose `exec` methods don't return `undefined` for nonparticipating
            // capturing groups. This fixes IE 5.5-8, but not IE 9's quirks mode or emulation of
            // older IEs. IE 9 in standards mode follows the spec
            if (!correctExecNpcg && match.length > 1 && indexOf(match, '') > -1) {
                r2 = copy(this, {remove: 'g'});
                // Using `str.slice(match.index)` rather than `match[0]` in case lookahead allowed
                // matching due to characters outside the match
                nativ.replace.call(String(str).slice(match.index), r2, function() {
                    var len = arguments.length, i;
                    // Skip index 0 and the last 2
                    for (i = 1; i < len - 2; ++i) {
                        if (arguments[i] === undefined) {
                            match[i] = undefined;
                        }
                    }
                });
            }

            // Attach named capture properties
            if (this[REGEX_DATA] && this[REGEX_DATA].captureNames) {
                // Skip index 0
                for (i = 1; i < match.length; ++i) {
                    name = this[REGEX_DATA].captureNames[i - 1];
                    if (name) {
                        match[name] = match[i];
                    }
                }
            }

            // Fix browsers that increment `lastIndex` after zero-length matches
            if (this.global && !match[0].length && (this.lastIndex > match.index)) {
                this.lastIndex = match.index;
            }
        }

        if (!this.global) {
            // Fixes IE, Opera bug (last tested IE 9, Opera 11.6)
            this.lastIndex = origLastIndex;
        }

        return match;
    };

/**
 * Fixes browser bugs in the native `RegExp.prototype.test`. Calling `XRegExp.install('natives')`
 * uses this to override the native method.
 * @private
 * @param {String} str String to search.
 * @returns {Boolean} Whether the regex matched the provided value.
 */
    fixed.test = function(str) {
        // Do this the easy way :-)
        return !!fixed.exec.call(this, str);
    };

/**
 * Adds named capture support (with backreferences returned as `result.name`), and fixes browser
 * bugs in the native `String.prototype.match`. Calling `XRegExp.install('natives')` uses this to
 * override the native method.
 * @private
 * @param {RegExp|*} regex Regex to search with. If not a regex object, it is passed to `RegExp`.
 * @returns {Array} If `regex` uses flag g, an array of match strings or `null`. Without flag g,
 *   the result of calling `regex.exec(this)`.
 */
    fixed.match = function(regex) {
        var result;

        if (!self.isRegExp(regex)) {
            // Use the native `RegExp` rather than `XRegExp`
            regex = new RegExp(regex);
        } else if (regex.global) {
            result = nativ.match.apply(this, arguments);
            // Fixes IE bug
            regex.lastIndex = 0;

            return result;
        }

        return fixed.exec.call(regex, toObject(this));
    };

/**
 * Adds support for `${n}` tokens for named and numbered backreferences in replacement text, and
 * provides named backreferences to replacement functions as `arguments[0].name`. Also fixes
 * browser bugs in replacement text syntax when performing a replacement using a nonregex search
 * value, and the value of a replacement regex's `lastIndex` property during replacement iterations
 * and upon completion. Note that this doesn't support SpiderMonkey's proprietary third (`flags`)
 * argument. Calling `XRegExp.install('natives')` uses this to override the native method. Use via
 * `XRegExp.replace` without overriding natives.
 * @private
 * @param {RegExp|String} search Search pattern to be replaced.
 * @param {String|Function} replacement Replacement string or a function invoked to create it.
 * @returns {String} New string with one or all matches replaced.
 */
    fixed.replace = function(search, replacement) {
        var isRegex = self.isRegExp(search),
            origLastIndex,
            captureNames,
            result;

        if (isRegex) {
            if (search[REGEX_DATA]) {
                captureNames = search[REGEX_DATA].captureNames;
            }
            // Only needed if `search` is nonglobal
            origLastIndex = search.lastIndex;
        } else {
            search += ''; // Type-convert
        }

        // Don't use `typeof`; some older browsers return 'function' for regex objects
        if (isType(replacement, 'Function')) {
            // Stringifying `this` fixes a bug in IE < 9 where the last argument in replacement
            // functions isn't type-converted to a string
            result = nativ.replace.call(String(this), search, function() {
                var args = arguments, i;
                if (captureNames) {
                    // Change the `arguments[0]` string primitive to a `String` object that can
                    // store properties. This really does need to use `String` as a constructor
                    args[0] = new String(args[0]);
                    // Store named backreferences on the first argument
                    for (i = 0; i < captureNames.length; ++i) {
                        if (captureNames[i]) {
                            args[0][captureNames[i]] = args[i + 1];
                        }
                    }
                }
                // Update `lastIndex` before calling `replacement`. Fixes IE, Chrome, Firefox,
                // Safari bug (last tested IE 9, Chrome 17, Firefox 11, Safari 5.1)
                if (isRegex && search.global) {
                    search.lastIndex = args[args.length - 2] + args[0].length;
                }
                // Should pass `undefined` as context; see
                // <https://bugs.ecmascript.org/show_bug.cgi?id=154>
                return replacement.apply(undefined, args);
            });
        } else {
            // Ensure that the last value of `args` will be a string when given nonstring `this`,
            // while still throwing on `null` or `undefined` context
            result = nativ.replace.call(this == null ? this : String(this), search, function() {
                // Keep this function's `arguments` available through closure
                var args = arguments;
                return nativ.replace.call(String(replacement), replacementToken, function($0, $1, $2) {
                    var n;
                    // Named or numbered backreference with curly braces
                    if ($1) {
                        /* XRegExp behavior for `${n}`:
                         * 1. Backreference to numbered capture, if `n` is an integer. Use `0` for
                         *    for the entire match. Any number of leading zeros may be used.
                         * 2. Backreference to named capture `n`, if it exists and is not an
                         *    integer overridden by numbered capture. In practice, this does not
                         *    overlap with numbered capture since XRegExp does not allow named
                         *    capture to use a bare integer as the name.
                         * 3. If the name or number does not refer to an existing capturing group,
                         *    it's an error.
                         */
                        n = +$1; // Type-convert; drop leading zeros
                        if (n <= args.length - 3) {
                            return args[n] || '';
                        }
                        // Groups with the same name is an error, else would need `lastIndexOf`
                        n = captureNames ? indexOf(captureNames, $1) : -1;
                        if (n < 0) {
                            throw new SyntaxError('Backreference to undefined group ' + $0);
                        }
                        return args[n + 1] || '';
                    }
                    // Else, special variable or numbered backreference without curly braces
                    if ($2 === '$') { // $$
                        return '$';
                    }
                    if ($2 === '&' || +$2 === 0) { // $&, $0 (not followed by 1-9), $00
                        return args[0];
                    }
                    if ($2 === '`') { // $` (left context)
                        return args[args.length - 1].slice(0, args[args.length - 2]);
                    }
                    if ($2 === "'") { // $' (right context)
                        return args[args.length - 1].slice(args[args.length - 2] + args[0].length);
                    }
                    // Else, numbered backreference without curly braces
                    $2 = +$2; // Type-convert; drop leading zero
                    /* XRegExp behavior for `$n` and `$nn`:
                     * - Backrefs end after 1 or 2 digits. Use `${..}` for more digits.
                     * - `$1` is an error if no capturing groups.
                     * - `$10` is an error if less than 10 capturing groups. Use `${1}0` instead.
                     * - `$01` is `$1` if at least one capturing group, else it's an error.
                     * - `$0` (not followed by 1-9) and `$00` are the entire match.
                     * Native behavior, for comparison:
                     * - Backrefs end after 1 or 2 digits. Cannot reference capturing group 100+.
                     * - `$1` is a literal `$1` if no capturing groups.
                     * - `$10` is `$1` followed by a literal `0` if less than 10 capturing groups.
                     * - `$01` is `$1` if at least one capturing group, else it's a literal `$01`.
                     * - `$0` is a literal `$0`.
                     */
                    if (!isNaN($2)) {
                        if ($2 > args.length - 3) {
                            throw new SyntaxError('Backreference to undefined group ' + $0);
                        }
                        return args[$2] || '';
                    }
                    throw new SyntaxError('Invalid token ' + $0);
                });
            });
        }

        if (isRegex) {
            if (search.global) {
                // Fixes IE, Safari bug (last tested IE 9, Safari 5.1)
                search.lastIndex = 0;
            } else {
                // Fixes IE, Opera bug (last tested IE 9, Opera 11.6)
                search.lastIndex = origLastIndex;
            }
        }

        return result;
    };

/**
 * Fixes browser bugs in the native `String.prototype.split`. Calling `XRegExp.install('natives')`
 * uses this to override the native method. Use via `XRegExp.split` without overriding natives.
 * @private
 * @param {RegExp|String} separator Regex or string to use for separating the string.
 * @param {Number} [limit] Maximum number of items to include in the result array.
 * @returns {Array} Array of substrings.
 */
    fixed.split = function(separator, limit) {
        if (!self.isRegExp(separator)) {
            // Browsers handle nonregex split correctly, so use the faster native method
            return nativ.split.apply(this, arguments);
        }

        var str = String(this),
            output = [],
            origLastIndex = separator.lastIndex,
            lastLastIndex = 0,
            lastLength;

        /* Values for `limit`, per the spec:
         * If undefined: pow(2,32) - 1
         * If 0, Infinity, or NaN: 0
         * If positive number: limit = floor(limit); if (limit >= pow(2,32)) limit -= pow(2,32);
         * If negative number: pow(2,32) - floor(abs(limit))
         * If other: Type-convert, then use the above rules
         */
        // This line fails in very strange ways for some values of `limit` in Opera 10.5-10.63,
        // unless Opera Dragonfly is open (go figure). It works in at least Opera 9.5-10.1 and 11+
        limit = (limit === undefined ? -1 : limit) >>> 0;

        self.forEach(str, separator, function(match) {
            // This condition is not the same as `if (match[0].length)`
            if ((match.index + match[0].length) > lastLastIndex) {
                output.push(str.slice(lastLastIndex, match.index));
                if (match.length > 1 && match.index < str.length) {
                    Array.prototype.push.apply(output, match.slice(1));
                }
                lastLength = match[0].length;
                lastLastIndex = match.index + lastLength;
            }
        });

        if (lastLastIndex === str.length) {
            if (!nativ.test.call(separator, '') || lastLength) {
                output.push('');
            }
        } else {
            output.push(str.slice(lastLastIndex));
        }

        separator.lastIndex = origLastIndex;
        return output.length > limit ? output.slice(0, limit) : output;
    };

/* ==============================
 * Built-in syntax/flag tokens
 * ============================== */

    add = self.addToken;

/* Letter identity escapes that natively match literal characters: `\a`, `\A`, etc. These should be
 * SyntaxErrors but are allowed in web reality. XRegExp makes them errors for cross-browser
 * consistency and to reserve their syntax, but lets them be superseded by addons.
 */
    add(
        /\\([ABCE-RTUVXYZaeg-mopqyz]|c(?![A-Za-z])|u(?![\dA-Fa-f]{4})|x(?![\dA-Fa-f]{2}))/,
        function(match, scope) {
            // \B is allowed in default scope only
            if (match[1] === 'B' && scope === defaultScope) {
                return match[0];
            }
            throw new SyntaxError('Invalid escape ' + match[0]);
        },
        {scope: 'all'}
    );

/* Empty character class: `[]` or `[^]`. This fixes a critical cross-browser syntax inconsistency.
 * Unless this is standardized (per the ES spec), regex syntax can't be accurately parsed because
 * character class endings can't be determined.
 */
    add(
        /\[(\^?)]/,
        function(match) {
            // For cross-browser compatibility with ES3, convert [] to \b\B and [^] to [\s\S].
            // (?!) should work like \b\B, but is unreliable in some versions of Firefox
            return match[1] ? '[\\s\\S]' : '\\b\\B';
        }
    );

/* Comment pattern: `(?# )`. Inline comments are an alternative to the line comments allowed in
 * free-spacing mode (flag x).
 */
    add(
        /\(\?#[^)]*\)/,
        function(match, scope, flags) {
            // Keep tokens separated unless the following token is a quantifier
            return isQuantifierNext(match.input, match.index + match[0].length, flags) ?
                '' : '(?:)';
        }
    );

/* Whitespace and line comments, in free-spacing mode (aka extended mode, flag x) only.
 */
    add(
        /\s+|#.*/,
        function(match, scope, flags) {
            // Keep tokens separated unless the following token is a quantifier
            return isQuantifierNext(match.input, match.index + match[0].length, flags) ?
                '' : '(?:)';
        },
        {flag: 'x'}
    );

/* Dot, in dotall mode (aka singleline mode, flag s) only.
 */
    add(
        /\./,
        function() {
            return '[\\s\\S]';
        },
        {flag: 's'}
    );

/* Named backreference: `\k<name>`. Backreference names can use the characters A-Z, a-z, 0-9, _,
 * and $ only. Also allows numbered backreferences as `\k<n>`.
 */
    add(
        /\\k<([\w$]+)>/,
        function(match) {
            // Groups with the same name is an error, else would need `lastIndexOf`
            var index = isNaN(match[1]) ? (indexOf(this.captureNames, match[1]) + 1) : +match[1],
                endIndex = match.index + match[0].length;
            if (!index || index > this.captureNames.length) {
                throw new SyntaxError('Backreference to undefined group ' + match[0]);
            }
            // Keep backreferences separate from subsequent literal numbers
            return '\\' + index + (
                endIndex === match.input.length || isNaN(match.input.charAt(endIndex)) ?
                    '' : '(?:)'
            );
        }
    );

/* Numbered backreference or octal, plus any following digits: `\0`, `\11`, etc. Octals except `\0`
 * not followed by 0-9 and backreferences to unopened capture groups throw an error. Other matches
 * are returned unaltered. IE < 9 doesn't support backreferences above `\99` in regex syntax.
 */
    add(
        /\\(\d+)/,
        function(match, scope) {
            if (
                !(
                    scope === defaultScope &&
                    /^[1-9]/.test(match[1]) &&
                    +match[1] <= this.captureNames.length
                ) &&
                match[1] !== '0'
            ) {
                throw new SyntaxError('Cannot use octal escape or backreference to undefined group ' +
                    match[0]);
            }
            return match[0];
        },
        {scope: 'all'}
    );

/* Named capturing group; match the opening delimiter only: `(?<name>`. Capture names can use the
 * characters A-Z, a-z, 0-9, _, and $ only. Names can't be integers. Supports Python-style
 * `(?P<name>` as an alternate syntax to avoid issues in recent Opera (which natively supports the
 * Python-style syntax). Otherwise, XRegExp might treat numbered backreferences to Python-style
 * named capture as octals.
 */
    add(
        /\(\?P?<([\w$]+)>/,
        function(match) {
            // Disallow bare integers as names because named backreferences are added to match
            // arrays and therefore numeric properties may lead to incorrect lookups
            if (!isNaN(match[1])) {
                throw new SyntaxError('Cannot use integer as capture name ' + match[0]);
            }
            if (match[1] === 'length' || match[1] === '__proto__') {
                throw new SyntaxError('Cannot use reserved word as capture name ' + match[0]);
            }
            if (indexOf(this.captureNames, match[1]) > -1) {
                throw new SyntaxError('Cannot use same name for multiple groups ' + match[0]);
            }
            this.captureNames.push(match[1]);
            this.hasNamedCapture = true;
            return '(';
        }
    );

/* Capturing group; match the opening parenthesis only. Required for support of named capturing
 * groups. Also adds explicit capture mode (flag n).
 */
    add(
        /\((?!\?)/,
        function(match, scope, flags) {
            if (flags.indexOf('n') > -1) {
                return '(?:';
            }
            this.captureNames.push(null);
            return '(';
        },
        {optionalFlags: 'n'}
    );

/* ==============================
 * Expose XRegExp
 * ============================== */

    return self;

}());

/*!
 * XRegExp.build 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2012 MIT License
 * Inspired by Lea Verou's RegExp.create <http://lea.verou.me/>
 */

(function(XRegExp) {
    

    var REGEX_DATA = 'xregexp',
        subParts = /(\()(?!\?)|\\([1-9]\d*)|\\[\s\S]|\[(?:[^\\\]]|\\[\s\S])*]/g,
        parts = XRegExp.union([/\({{([\w$]+)}}\)|{{([\w$]+)}}/, subParts], 'g');

/**
 * Strips a leading `^` and trailing unescaped `$`, if both are present.
 * @private
 * @param {String} pattern Pattern to process.
 * @returns {String} Pattern with edge anchors removed.
 */
    function deanchor(pattern) {
        var leadingAnchor = /^\^/,
            trailingAnchor = /\$$/;

        // Ensure that the trailing `$` isn't escaped
        if (leadingAnchor.test(pattern) && trailingAnchor.test(pattern.replace(/\\[\s\S]/g, ''))) {
            return pattern.replace(leadingAnchor, '').replace(trailingAnchor, '');
        }

        return pattern;
    }

/**
 * Converts the provided value to an XRegExp. Native RegExp flags are not preserved.
 * @private
 * @param {String|RegExp} value Value to convert.
 * @returns {RegExp} XRegExp object with XRegExp syntax applied.
 */
    function asXRegExp(value) {
        return XRegExp.isRegExp(value) ?
            (value[REGEX_DATA] && value[REGEX_DATA].captureNames ?
                // Don't recompile, to preserve capture names
                value :
                // Recompile as XRegExp
                XRegExp(value.source)
            ) :
            // Compile string as XRegExp
            XRegExp(value);
    }

/**
 * Builds regexes using named subpatterns, for readability and pattern reuse. Backreferences in the
 * outer pattern and provided subpatterns are automatically renumbered to work correctly. Native
 * flags used by provided subpatterns are ignored in favor of the `flags` argument.
 * @memberOf XRegExp
 * @param {String} pattern XRegExp pattern using `{{name}}` for embedded subpatterns. Allows
 *   `({{name}})` as shorthand for `(?<name>{{name}})`. Patterns cannot be embedded within
 *   character classes.
 * @param {Object} subs Lookup object for named subpatterns. Values can be strings or regexes. A
 *   leading `^` and trailing unescaped `$` are stripped from subpatterns, if both are present.
 * @param {String} [flags] Any combination of XRegExp flags.
 * @returns {RegExp} Regex with interpolated subpatterns.
 * @example
 *
 * var time = XRegExp.build('(?x)^ {{hours}} ({{minutes}}) $', {
 *   hours: XRegExp.build('{{h12}} : | {{h24}}', {
 *     h12: /1[0-2]|0?[1-9]/,
 *     h24: /2[0-3]|[01][0-9]/
 *   }, 'x'),
 *   minutes: /^[0-5][0-9]$/
 * });
 * time.test('10:59'); // -> true
 * XRegExp.exec('10:59', time).minutes; // -> '59'
 */
    XRegExp.build = function(pattern, subs, flags) {
        var inlineFlags = /^\(\?([\w$]+)\)/.exec(pattern),
            data = {},
            numCaps = 0, // 'Caps' is short for captures
            numPriorCaps,
            numOuterCaps = 0,
            outerCapsMap = [0],
            outerCapNames,
            sub,
            p;

        // Add flags within a leading mode modifier to the overall pattern's flags
        if (inlineFlags) {
            flags = flags || '';
            inlineFlags[1].replace(/./g, function(flag) {
                // Don't add duplicates
                flags += (flags.indexOf(flag) > -1 ? '' : flag);
            });
        }

        for (p in subs) {
            if (subs.hasOwnProperty(p)) {
                // Passing to XRegExp enables extended syntax and ensures independent validity,
                // lest an unescaped `(`, `)`, `[`, or trailing `\` breaks the `(?:)` wrapper. For
                // subpatterns provided as native regexes, it dies on octals and adds the property
                // used to hold extended regex instance data, for simplicity
                sub = asXRegExp(subs[p]);
                data[p] = {
                    // Deanchoring allows embedding independently useful anchored regexes. If you
                    // really need to keep your anchors, double them (i.e., `^^...$$`)
                    pattern: deanchor(sub.source),
                    names: sub[REGEX_DATA].captureNames || []
                };
            }
        }

        // Passing to XRegExp dies on octals and ensures the outer pattern is independently valid;
        // helps keep this simple. Named captures will be put back
        pattern = asXRegExp(pattern);
        outerCapNames = pattern[REGEX_DATA].captureNames || [];
        pattern = pattern.source.replace(parts, function($0, $1, $2, $3, $4) {
            var subName = $1 || $2, capName, intro;
            // Named subpattern
            if (subName) {
                if (!data.hasOwnProperty(subName)) {
                    throw new ReferenceError('Undefined property ' + $0);
                }
                // Named subpattern was wrapped in a capturing group
                if ($1) {
                    capName = outerCapNames[numOuterCaps];
                    outerCapsMap[++numOuterCaps] = ++numCaps;
                    // If it's a named group, preserve the name. Otherwise, use the subpattern name
                    // as the capture name
                    intro = '(?<' + (capName || subName) + '>';
                } else {
                    intro = '(?:';
                }
                numPriorCaps = numCaps;
                return intro + data[subName].pattern.replace(subParts, function(match, paren, backref) {
                    // Capturing group
                    if (paren) {
                        capName = data[subName].names[numCaps - numPriorCaps];
                        ++numCaps;
                        // If the current capture has a name, preserve the name
                        if (capName) {
                            return '(?<' + capName + '>';
                        }
                    // Backreference
                    } else if (backref) {
                        // Rewrite the backreference
                        return '\\' + (+backref + numPriorCaps);
                    }
                    return match;
                }) + ')';
            }
            // Capturing group
            if ($3) {
                capName = outerCapNames[numOuterCaps];
                outerCapsMap[++numOuterCaps] = ++numCaps;
                // If the current capture has a name, preserve the name
                if (capName) {
                    return '(?<' + capName + '>';
                }
            // Backreference
            } else if ($4) {
                // Rewrite the backreference
                return '\\' + outerCapsMap[+$4];
            }
            return $0;
        });

        return XRegExp(pattern, flags);
    };

}(XRegExp));

/*!
 * XRegExp.matchRecursive 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2009-2012 MIT License
 */

(function(XRegExp) {
    

/**
 * Returns a match detail object composed of the provided values.
 * @private
 */
    function row(name, value, start, end) {
        return {
            name: name,
            value: value,
            start: start,
            end: end
        };
    }

/**
 * Returns an array of match strings between outermost left and right delimiters, or an array of
 * objects with detailed match parts and position data. An error is thrown if delimiters are
 * unbalanced within the data.
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {String} left Left delimiter as an XRegExp pattern.
 * @param {String} right Right delimiter as an XRegExp pattern.
 * @param {String} [flags] Any native or XRegExp flags, used for the left and right delimiters.
 * @param {Object} [options] Lets you specify `valueNames` and `escapeChar` options.
 * @returns {Array} Array of matches, or an empty array.
 * @example
 *
 * // Basic usage
 * var str = '(t((e))s)t()(ing)';
 * XRegExp.matchRecursive(str, '\\(', '\\)', 'g');
 * // -> ['t((e))s', '', 'ing']
 *
 * // Extended information mode with valueNames
 * str = 'Here is <div> <div>an</div></div> example';
 * XRegExp.matchRecursive(str, '<div\\s*>', '</div>', 'gi', {
 *   valueNames: ['between', 'left', 'match', 'right']
 * });
 * // -> [
 * // {name: 'between', value: 'Here is ',       start: 0,  end: 8},
 * // {name: 'left',    value: '<div>',          start: 8,  end: 13},
 * // {name: 'match',   value: ' <div>an</div>', start: 13, end: 27},
 * // {name: 'right',   value: '</div>',         start: 27, end: 33},
 * // {name: 'between', value: ' example',       start: 33, end: 41}
 * // ]
 *
 * // Omitting unneeded parts with null valueNames, and using escapeChar
 * str = '...{1}\\{{function(x,y){return y+x;}}';
 * XRegExp.matchRecursive(str, '{', '}', 'g', {
 *   valueNames: ['literal', null, 'value', null],
 *   escapeChar: '\\'
 * });
 * // -> [
 * // {name: 'literal', value: '...', start: 0, end: 3},
 * // {name: 'value',   value: '1',   start: 4, end: 5},
 * // {name: 'literal', value: '\\{', start: 6, end: 8},
 * // {name: 'value',   value: 'function(x,y){return y+x;}', start: 9, end: 35}
 * // ]
 *
 * // Sticky mode via flag y
 * str = '<1><<<2>>><3>4<5>';
 * XRegExp.matchRecursive(str, '<', '>', 'gy');
 * // -> ['1', '<<2>>', '3']
 */
    XRegExp.matchRecursive = function(str, left, right, flags, options) {
        flags = flags || '';
        options = options || {};
        var global = flags.indexOf('g') > -1,
            sticky = flags.indexOf('y') > -1,
            // Flag `y` is controlled internally
            basicFlags = flags.replace(/y/g, ''),
            escapeChar = options.escapeChar,
            vN = options.valueNames,
            output = [],
            openTokens = 0,
            delimStart = 0,
            delimEnd = 0,
            lastOuterEnd = 0,
            outerStart,
            innerStart,
            leftMatch,
            rightMatch,
            esc;
        left = XRegExp(left, basicFlags);
        right = XRegExp(right, basicFlags);

        if (escapeChar) {
            if (escapeChar.length > 1) {
                throw new Error('Cannot use more than one escape character');
            }
            escapeChar = XRegExp.escape(escapeChar);
            // Using `XRegExp.union` safely rewrites backreferences in `left` and `right`
            esc = new RegExp(
                '(?:' + escapeChar + '[\\S\\s]|(?:(?!' +
                    XRegExp.union([left, right]).source +
                    ')[^' + escapeChar + '])+)+',
                // Flags `gy` not needed here
                flags.replace(/[^im]+/g, '')
            );
        }

        while (true) {
            // If using an escape character, advance to the delimiter's next starting position,
            // skipping any escaped characters in between
            if (escapeChar) {
                delimEnd += (XRegExp.exec(str, esc, delimEnd, 'sticky') || [''])[0].length;
            }
            leftMatch = XRegExp.exec(str, left, delimEnd);
            rightMatch = XRegExp.exec(str, right, delimEnd);
            // Keep the leftmost match only
            if (leftMatch && rightMatch) {
                if (leftMatch.index <= rightMatch.index) {
                    rightMatch = null;
                } else {
                    leftMatch = null;
                }
            }
            /* Paths (LM: leftMatch, RM: rightMatch, OT: openTokens):
             * LM | RM | OT | Result
             * 1  | 0  | 1  | loop
             * 1  | 0  | 0  | loop
             * 0  | 1  | 1  | loop
             * 0  | 1  | 0  | throw
             * 0  | 0  | 1  | throw
             * 0  | 0  | 0  | break
             * Doesn't include the sticky mode special case. The loop ends after the first
             * completed match if not `global`.
             */
            if (leftMatch || rightMatch) {
                delimStart = (leftMatch || rightMatch).index;
                delimEnd = delimStart + (leftMatch || rightMatch)[0].length;
            } else if (!openTokens) {
                break;
            }
            if (sticky && !openTokens && delimStart > lastOuterEnd) {
                break;
            }
            if (leftMatch) {
                if (!openTokens) {
                    outerStart = delimStart;
                    innerStart = delimEnd;
                }
                ++openTokens;
            } else if (rightMatch && openTokens) {
                if (!--openTokens) {
                    if (vN) {
                        if (vN[0] && outerStart > lastOuterEnd) {
                            output.push(row(vN[0], str.slice(lastOuterEnd, outerStart), lastOuterEnd, outerStart));
                        }
                        if (vN[1]) {
                            output.push(row(vN[1], str.slice(outerStart, innerStart), outerStart, innerStart));
                        }
                        if (vN[2]) {
                            output.push(row(vN[2], str.slice(innerStart, delimStart), innerStart, delimStart));
                        }
                        if (vN[3]) {
                            output.push(row(vN[3], str.slice(delimStart, delimEnd), delimStart, delimEnd));
                        }
                    } else {
                        output.push(str.slice(innerStart, delimStart));
                    }
                    lastOuterEnd = delimEnd;
                    if (!global) {
                        break;
                    }
                }
            } else {
                throw new Error('Unbalanced delimiter found in string');
            }
            // If the delimiter matched an empty string, avoid an infinite loop
            if (delimStart === delimEnd) {
                ++delimEnd;
            }
        }

        if (global && !sticky && vN && vN[0] && str.length > lastOuterEnd) {
            output.push(row(vN[0], str.slice(lastOuterEnd), lastOuterEnd, str.length));
        }

        return output;
    };

}(XRegExp));

/*!
 * XRegExp Unicode Base 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2008-2012 MIT License
 * Uses Unicode 6.2.0 <http://unicode.org/>
 * Unicode data generated by Mathias Bynens <http://mathiasbynens.be/>
 */

/**
 * Adds support for the `\p{L}` or `\p{Letter}` Unicode category. Addon packages for other Unicode
 * categories, scripts, blocks, and properties are available separately. Also adds flag A (astral),
 * which enables 21-bit Unicode support. All Unicode tokens can be inverted using `\P{..}` or
 * `\p{^..}`. Token names ignore case, spaces, hyphens, and underscores.
 * @requires XRegExp
 */
(function(XRegExp) {
    

// Storage for Unicode data
    var unicode = {};

/* ==============================
 * Private functions
 * ============================== */

// Generates a token lookup name: lowercase, with hyphens, spaces, and underscores removed
    function normalize(name) {
        return name.replace(/[- _]+/g, '').toLowerCase();
    }

// Adds leading zeros if shorter than four characters
    function pad4(str) {
        while (str.length < 4) {
            str = '0' + str;
        }
        return str;
    }

// Converts a hexadecimal number to decimal
    function dec(hex) {
        return parseInt(hex, 16);
    }

// Converts a decimal number to hexadecimal
    function hex(dec) {
        return parseInt(dec, 10).toString(16);
    }

// Gets the decimal code of a literal code unit, \xHH, \uHHHH, or a backslash-escaped literal
    function charCode(chr) {
        var esc = /^\\[xu](.+)/.exec(chr);
        return esc ?
            dec(esc[1]) :
            chr.charCodeAt(chr.charAt(0) === '\\' ? 1 : 0);
    }

// Inverts a list of ordered BMP characters and ranges
    function invertBmp(range) {
        var output = '',
            lastEnd = -1,
            start;
        XRegExp.forEach(range, /(\\x..|\\u....|\\?[\s\S])(?:-(\\x..|\\u....|\\?[\s\S]))?/, function(m) {
            start = charCode(m[1]);
            if (start > (lastEnd + 1)) {
                output += '\\u' + pad4(hex(lastEnd + 1));
                if (start > (lastEnd + 2)) {
                    output += '-\\u' + pad4(hex(start - 1));
                }
            }
            lastEnd = charCode(m[2] || m[1]);
        });
        if (lastEnd < 0xFFFF) {
            output += '\\u' + pad4(hex(lastEnd + 1));
            if (lastEnd < 0xFFFE) {
                output += '-\\uFFFF';
            }
        }
        return output;
    }

// Generates an inverted BMP range on first use
    function cacheInvertedBmp(slug) {
        var prop = 'b!';
        return unicode[slug][prop] || (
            unicode[slug][prop] = invertBmp(unicode[slug].bmp)
        );
    }

// Combines and optionally negates BMP and astral data
    function buildAstral(slug, isNegated) {
        var item = unicode[slug],
            combined = '';
        if (item.bmp && !item.isBmpLast) {
            combined = '[' + item.bmp + ']' + (item.astral ? '|' : '');
        }
        if (item.astral) {
            combined += item.astral;
        }
        if (item.isBmpLast && item.bmp) {
            combined += (item.astral ? '|' : '') + '[' + item.bmp + ']';
        }
        // Astral Unicode tokens always match a code point, never a code unit
        return isNegated ?
            '(?:(?!' + combined + ')(?:[\uD800-\uDBFF][\uDC00-\uDFFF]|[\0-\uFFFF]))' :
            '(?:' + combined + ')';
    }

// Builds a complete astral pattern on first use
    function cacheAstral(slug, isNegated) {
        var prop = isNegated ? 'a!' : 'a=';
        return unicode[slug][prop] || (
            unicode[slug][prop] = buildAstral(slug, isNegated)
        );
    }

/* ==============================
 * Core functionality
 * ============================== */

/* Add Unicode token syntax: \p{..}, \P{..}, \p{^..}. Also add astral mode (flag A).
 */
    XRegExp.addToken(
        // Use `*` instead of `+` to avoid capturing `^` as the token name in `\p{^}`
        /\\([pP])(?:{(\^?)([^}]*)}|([A-Za-z]))/,
        function(match, scope, flags) {
            var ERR_DOUBLE_NEG = 'Invalid double negation ',
                ERR_UNKNOWN_NAME = 'Unknown Unicode token ',
                ERR_UNKNOWN_REF = 'Unicode token missing data ',
                ERR_ASTRAL_ONLY = 'Astral mode required for Unicode token ',
                ERR_ASTRAL_IN_CLASS = 'Astral mode does not support Unicode tokens within character classes',
                // Negated via \P{..} or \p{^..}
                isNegated = match[1] === 'P' || !!match[2],
                // Switch from BMP (U+FFFF) to astral (U+10FFFF) mode via flag A or implicit opt-in
                isAstralMode = flags.indexOf('A') > -1 || XRegExp.isInstalled('astral'),
                // Token lookup name. Check `[4]` first to avoid passing `undefined` via `\p{}`
                slug = normalize(match[4] || match[3]),
                // Token data object
                item = unicode[slug];

            if (match[1] === 'P' && match[2]) {
                throw new SyntaxError(ERR_DOUBLE_NEG + match[0]);
            }
            if (!unicode.hasOwnProperty(slug)) {
                throw new SyntaxError(ERR_UNKNOWN_NAME + match[0]);
            }

            // Switch to the negated form of the referenced Unicode token
            if (item.inverseOf) {
                slug = normalize(item.inverseOf);
                if (!unicode.hasOwnProperty(slug)) {
                    throw new ReferenceError(ERR_UNKNOWN_REF + match[0] + ' -> ' + item.inverseOf);
                }
                item = unicode[slug];
                isNegated = !isNegated;
            }

            if (!(item.bmp || isAstralMode)) {
                throw new SyntaxError(ERR_ASTRAL_ONLY + match[0]);
            }
            if (isAstralMode) {
                if (scope === 'class') {
                    throw new SyntaxError(ERR_ASTRAL_IN_CLASS);
                }

                return cacheAstral(slug, isNegated);
            }

            return scope === 'class' ?
                (isNegated ? cacheInvertedBmp(slug) : item.bmp) :
                (isNegated ? '[^' : '[') + item.bmp + ']';
        },
        {
            scope: 'all',
            optionalFlags: 'A'
        }
    );

/**
 * Adds to the list of Unicode tokens that XRegExp regexes can match via `\p` or `\P`.
 * @memberOf XRegExp
 * @param {Array} data Objects with named character ranges. Each object may have properties `name`,
 *   `alias`, `isBmpLast`, `inverseOf`, `bmp`, and `astral`. All but `name` are optional, although
 *   one of `bmp` or `astral` is required (unless `inverseOf` is set). If `astral` is absent, the
 *   `bmp` data is used for BMP and astral modes. If `bmp` is absent, the name errors in BMP mode
 *   but works in astral mode. If both `bmp` and `astral` are provided, the `bmp` data only is used
 *   in BMP mode, and the combination of `bmp` and `astral` data is used in astral mode.
 *   `isBmpLast` is needed when a token matches orphan high surrogates *and* uses surrogate pairs
 *   to match astral code points. The `bmp` and `astral` data should be a combination of literal
 *   characters and `\xHH` or `\uHHHH` escape sequences, with hyphens to create ranges. Any regex
 *   metacharacters in the data should be escaped, apart from range-creating hyphens. The `astral`
 *   data can additionally use character classes and alternation, and should use surrogate pairs to
 *   represent astral code points. `inverseOf` can be used to avoid duplicating character data if a
 *   Unicode token is defined as the exact inverse of another token.
 * @example
 *
 * // Basic use
 * XRegExp.addUnicodeData([{
 *   name: 'XDigit',
 *   alias: 'Hexadecimal',
 *   bmp: '0-9A-Fa-f'
 * }]);
 * XRegExp('\\p{XDigit}:\\p{Hexadecimal}+').test('0:3D'); // -> true
 */
    XRegExp.addUnicodeData = function(data) {
        var ERR_NO_NAME = 'Unicode token requires name',
            ERR_NO_DATA = 'Unicode token has no character data ',
            item,
            i;

        for (i = 0; i < data.length; ++i) {
            item = data[i];
            if (!item.name) {
                throw new Error(ERR_NO_NAME);
            }
            if (!(item.inverseOf || item.bmp || item.astral)) {
                throw new Error(ERR_NO_DATA + item.name);
            }
            unicode[normalize(item.name)] = item;
            if (item.alias) {
                unicode[normalize(item.alias)] = item;
            }
        }

        // Reset the pattern cache used by the `XRegExp` constructor, since the same pattern and
        // flags might now produce different results
        XRegExp.cache.flush('patterns');
    };

/* Add data for the Unicode `L` or `Letter` category. Separate addons are available that add other
 * categories, scripts, blocks, and properties.
 */
    XRegExp.addUnicodeData([{
        name: 'L',
        alias: 'Letter',
        bmp: 'A-Za-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC',
        astral: '\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE60-\uDE7C\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72]|\uD801[\uDC00-\uDC9D]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1E\uDF30-\uDF40\uDF42-\uDF49\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF]|\uD81A[\uDC00-\uDE38]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD83-\uDDB2\uDDC1-\uDDC4]|\uD86E[\uDC00-\uDC1D]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD803[\uDC00-\uDC48]|\uD80D[\uDC00-\uDC2E]|\uD805[\uDE80-\uDEAA]|\uD87E[\uDC00-\uDE1D]|\uD81B[\uDF00-\uDF44\uDF50\uDF93-\uDF9F]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD82C[\uDC00\uDC01]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD808[\uDC00-\uDF6E]'
    }]);

}(XRegExp));

/*!
 * XRegExp Unicode Blocks 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2010-2012 MIT License
 * Uses Unicode 6.2.0 <http://unicode.org/>
 * Unicode data generated by Mathias Bynens <http://mathiasbynens.be/>
 */

/**
 * Adds support for all Unicode blocks. Block names use the prefix 'In'. E.g., `\p{InBasicLatin}`.
 * Token names are case insensitive, and any spaces, hyphens, and underscores are ignored.
 * @requires XRegExp, Unicode Base
 */
(function(XRegExp) {
    

    if (!XRegExp.addUnicodeData) {
        throw new ReferenceError('Unicode Base must be loaded before Unicode Blocks');
    }

    XRegExp.addUnicodeData([
        {
            name: 'InAegean_Numbers',
            astral: '\uD800[\uDD00-\uDD3F]'
        },
        {
            name: 'InAlchemical_Symbols',
            astral: '\uD83D[\uDF00-\uDF7F]'
        },
        {
            name: 'InAlphabetic_Presentation_Forms',
            bmp: '\uFB00-\uFB4F'
        },
        {
            name: 'InAncient_Greek_Musical_Notation',
            astral: '\uD834[\uDE00-\uDE4F]'
        },
        {
            name: 'InAncient_Greek_Numbers',
            astral: '\uD800[\uDD40-\uDD8F]'
        },
        {
            name: 'InAncient_Symbols',
            astral: '\uD800[\uDD90-\uDDCF]'
        },
        {
            name: 'InArabic',
            bmp: '\u0600-\u06FF'
        },
        {
            name: 'InArabic_Extended_A',
            bmp: '\u08A0-\u08FF'
        },
        {
            name: 'InArabic_Mathematical_Alphabetic_Symbols',
            astral: '\uD83B[\uDE00-\uDEFF]'
        },
        {
            name: 'InArabic_Presentation_Forms_A',
            bmp: '\uFB50-\uFDFF'
        },
        {
            name: 'InArabic_Presentation_Forms_B',
            bmp: '\uFE70-\uFEFF'
        },
        {
            name: 'InArabic_Supplement',
            bmp: '\u0750-\u077F'
        },
        {
            name: 'InArmenian',
            bmp: '\u0530-\u058F'
        },
        {
            name: 'InArrows',
            bmp: '\u2190-\u21FF'
        },
        {
            name: 'InAvestan',
            astral: '\uD802[\uDF00-\uDF3F]'
        },
        {
            name: 'InBalinese',
            bmp: '\u1B00-\u1B7F'
        },
        {
            name: 'InBamum',
            bmp: '\uA6A0-\uA6FF'
        },
        {
            name: 'InBamum_Supplement',
            astral: '\uD81A[\uDC00-\uDE3F]'
        },
        {
            name: 'InBasic_Latin',
            bmp: '\0-\x7F'
        },
        {
            name: 'InBatak',
            bmp: '\u1BC0-\u1BFF'
        },
        {
            name: 'InBengali',
            bmp: '\u0980-\u09FF'
        },
        {
            name: 'InBlock_Elements',
            bmp: '\u2580-\u259F'
        },
        {
            name: 'InBopomofo',
            bmp: '\u3100-\u312F'
        },
        {
            name: 'InBopomofo_Extended',
            bmp: '\u31A0-\u31BF'
        },
        {
            name: 'InBox_Drawing',
            bmp: '\u2500-\u257F'
        },
        {
            name: 'InBrahmi',
            astral: '\uD804[\uDC00-\uDC7F]'
        },
        {
            name: 'InBraille_Patterns',
            bmp: '\u2800-\u28FF'
        },
        {
            name: 'InBuginese',
            bmp: '\u1A00-\u1A1F'
        },
        {
            name: 'InBuhid',
            bmp: '\u1740-\u175F'
        },
        {
            name: 'InByzantine_Musical_Symbols',
            astral: '\uD834[\uDC00-\uDCFF]'
        },
        {
            name: 'InCJK_Compatibility',
            bmp: '\u3300-\u33FF'
        },
        {
            name: 'InCJK_Compatibility_Forms',
            bmp: '\uFE30-\uFE4F'
        },
        {
            name: 'InCJK_Compatibility_Ideographs',
            bmp: '\uF900-\uFAFF'
        },
        {
            name: 'InCJK_Compatibility_Ideographs_Supplement',
            astral: '\uD87E[\uDC00-\uDE1F]'
        },
        {
            name: 'InCJK_Radicals_Supplement',
            bmp: '\u2E80-\u2EFF'
        },
        {
            name: 'InCJK_Strokes',
            bmp: '\u31C0-\u31EF'
        },
        {
            name: 'InCJK_Symbols_and_Punctuation',
            bmp: '\u3000-\u303F'
        },
        {
            name: 'InCJK_Unified_Ideographs',
            bmp: '\u4E00-\u9FFF'
        },
        {
            name: 'InCJK_Unified_Ideographs_Extension_A',
            bmp: '\u3400-\u4DBF'
        },
        {
            name: 'InCJK_Unified_Ideographs_Extension_B',
            astral: '[\uD840-\uD868][\uDC00-\uDFFF]|\uD869[\uDC00-\uDEDF]'
        },
        {
            name: 'InCJK_Unified_Ideographs_Extension_C',
            astral: '\uD86D[\uDC00-\uDF3F]|[\uD86A-\uD86C][\uDC00-\uDFFF]|\uD869[\uDF00-\uDFFF]'
        },
        {
            name: 'InCJK_Unified_Ideographs_Extension_D',
            astral: '\uD86D[\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1F]'
        },
        {
            name: 'InCarian',
            astral: '\uD800[\uDEA0-\uDEDF]'
        },
        {
            name: 'InChakma',
            astral: '\uD804[\uDD00-\uDD4F]'
        },
        {
            name: 'InCham',
            bmp: '\uAA00-\uAA5F'
        },
        {
            name: 'InCherokee',
            bmp: '\u13A0-\u13FF'
        },
        {
            name: 'InCombining_Diacritical_Marks',
            bmp: '\u0300-\u036F'
        },
        {
            name: 'InCombining_Diacritical_Marks_Supplement',
            bmp: '\u1DC0-\u1DFF'
        },
        {
            name: 'InCombining_Diacritical_Marks_for_Symbols',
            bmp: '\u20D0-\u20FF'
        },
        {
            name: 'InCombining_Half_Marks',
            bmp: '\uFE20-\uFE2F'
        },
        {
            name: 'InCommon_Indic_Number_Forms',
            bmp: '\uA830-\uA83F'
        },
        {
            name: 'InControl_Pictures',
            bmp: '\u2400-\u243F'
        },
        {
            name: 'InCoptic',
            bmp: '\u2C80-\u2CFF'
        },
        {
            name: 'InCounting_Rod_Numerals',
            astral: '\uD834[\uDF60-\uDF7F]'
        },
        {
            name: 'InCuneiform',
            astral: '\uD808[\uDC00-\uDFFF]'
        },
        {
            name: 'InCuneiform_Numbers_and_Punctuation',
            astral: '\uD809[\uDC00-\uDC7F]'
        },
        {
            name: 'InCurrency_Symbols',
            bmp: '\u20A0-\u20CF'
        },
        {
            name: 'InCypriot_Syllabary',
            astral: '\uD802[\uDC00-\uDC3F]'
        },
        {
            name: 'InCyrillic',
            bmp: '\u0400-\u04FF'
        },
        {
            name: 'InCyrillic_Extended_A',
            bmp: '\u2DE0-\u2DFF'
        },
        {
            name: 'InCyrillic_Extended_B',
            bmp: '\uA640-\uA69F'
        },
        {
            name: 'InCyrillic_Supplement',
            bmp: '\u0500-\u052F'
        },
        {
            name: 'InDeseret',
            astral: '\uD801[\uDC00-\uDC4F]'
        },
        {
            name: 'InDevanagari',
            bmp: '\u0900-\u097F'
        },
        {
            name: 'InDevanagari_Extended',
            bmp: '\uA8E0-\uA8FF'
        },
        {
            name: 'InDingbats',
            bmp: '\u2700-\u27BF'
        },
        {
            name: 'InDomino_Tiles',
            astral: '\uD83C[\uDC30-\uDC9F]'
        },
        {
            name: 'InEgyptian_Hieroglyphs',
            astral: '\uD80C[\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2F]'
        },
        {
            name: 'InEmoticons',
            astral: '\uD83D[\uDE00-\uDE4F]'
        },
        {
            name: 'InEnclosed_Alphanumeric_Supplement',
            astral: '\uD83C[\uDD00-\uDDFF]'
        },
        {
            name: 'InEnclosed_Alphanumerics',
            bmp: '\u2460-\u24FF'
        },
        {
            name: 'InEnclosed_CJK_Letters_and_Months',
            bmp: '\u3200-\u32FF'
        },
        {
            name: 'InEnclosed_Ideographic_Supplement',
            astral: '\uD83C[\uDE00-\uDEFF]'
        },
        {
            name: 'InEthiopic',
            bmp: '\u1200-\u137F'
        },
        {
            name: 'InEthiopic_Extended',
            bmp: '\u2D80-\u2DDF'
        },
        {
            name: 'InEthiopic_Extended_A',
            bmp: '\uAB00-\uAB2F'
        },
        {
            name: 'InEthiopic_Supplement',
            bmp: '\u1380-\u139F'
        },
        {
            name: 'InGeneral_Punctuation',
            bmp: '\u2000-\u206F'
        },
        {
            name: 'InGeometric_Shapes',
            bmp: '\u25A0-\u25FF'
        },
        {
            name: 'InGeorgian',
            bmp: '\u10A0-\u10FF'
        },
        {
            name: 'InGeorgian_Supplement',
            bmp: '\u2D00-\u2D2F'
        },
        {
            name: 'InGlagolitic',
            bmp: '\u2C00-\u2C5F'
        },
        {
            name: 'InGothic',
            astral: '\uD800[\uDF30-\uDF4F]'
        },
        {
            name: 'InGreek_Extended',
            bmp: '\u1F00-\u1FFF'
        },
        {
            name: 'InGreek_and_Coptic',
            bmp: '\u0370-\u03FF'
        },
        {
            name: 'InGujarati',
            bmp: '\u0A80-\u0AFF'
        },
        {
            name: 'InGurmukhi',
            bmp: '\u0A00-\u0A7F'
        },
        {
            name: 'InHalfwidth_and_Fullwidth_Forms',
            bmp: '\uFF00-\uFFEF'
        },
        {
            name: 'InHangul_Compatibility_Jamo',
            bmp: '\u3130-\u318F'
        },
        {
            name: 'InHangul_Jamo',
            bmp: '\u1100-\u11FF'
        },
        {
            name: 'InHangul_Jamo_Extended_A',
            bmp: '\uA960-\uA97F'
        },
        {
            name: 'InHangul_Jamo_Extended_B',
            bmp: '\uD7B0-\uD7FF'
        },
        {
            name: 'InHangul_Syllables',
            bmp: '\uAC00-\uD7AF'
        },
        {
            name: 'InHanunoo',
            bmp: '\u1720-\u173F'
        },
        {
            name: 'InHebrew',
            bmp: '\u0590-\u05FF'
        },
        {
            name: 'InHigh_Private_Use_Surrogates',
            bmp: '\uDB80-\uDBFF'
        },
        {
            name: 'InHigh_Surrogates',
            bmp: '\uD800-\uDB7F'
        },
        {
            name: 'InHiragana',
            bmp: '\u3040-\u309F'
        },
        {
            name: 'InIPA_Extensions',
            bmp: '\u0250-\u02AF'
        },
        {
            name: 'InIdeographic_Description_Characters',
            bmp: '\u2FF0-\u2FFF'
        },
        {
            name: 'InImperial_Aramaic',
            astral: '\uD802[\uDC40-\uDC5F]'
        },
        {
            name: 'InInscriptional_Pahlavi',
            astral: '\uD802[\uDF60-\uDF7F]'
        },
        {
            name: 'InInscriptional_Parthian',
            astral: '\uD802[\uDF40-\uDF5F]'
        },
        {
            name: 'InJavanese',
            bmp: '\uA980-\uA9DF'
        },
        {
            name: 'InKaithi',
            astral: '\uD804[\uDC80-\uDCCF]'
        },
        {
            name: 'InKana_Supplement',
            astral: '\uD82C[\uDC00-\uDCFF]'
        },
        {
            name: 'InKanbun',
            bmp: '\u3190-\u319F'
        },
        {
            name: 'InKangxi_Radicals',
            bmp: '\u2F00-\u2FDF'
        },
        {
            name: 'InKannada',
            bmp: '\u0C80-\u0CFF'
        },
        {
            name: 'InKatakana',
            bmp: '\u30A0-\u30FF'
        },
        {
            name: 'InKatakana_Phonetic_Extensions',
            bmp: '\u31F0-\u31FF'
        },
        {
            name: 'InKayah_Li',
            bmp: '\uA900-\uA92F'
        },
        {
            name: 'InKharoshthi',
            astral: '\uD802[\uDE00-\uDE5F]'
        },
        {
            name: 'InKhmer',
            bmp: '\u1780-\u17FF'
        },
        {
            name: 'InKhmer_Symbols',
            bmp: '\u19E0-\u19FF'
        },
        {
            name: 'InLao',
            bmp: '\u0E80-\u0EFF'
        },
        {
            name: 'InLatin_Extended_Additional',
            bmp: '\u1E00-\u1EFF'
        },
        {
            name: 'InLatin_Extended_A',
            bmp: '\u0100-\u017F'
        },
        {
            name: 'InLatin_Extended_B',
            bmp: '\u0180-\u024F'
        },
        {
            name: 'InLatin_Extended_C',
            bmp: '\u2C60-\u2C7F'
        },
        {
            name: 'InLatin_Extended_D',
            bmp: '\uA720-\uA7FF'
        },
        {
            name: 'InLatin_1_Supplement',
            bmp: '\x80-\xFF'
        },
        {
            name: 'InLepcha',
            bmp: '\u1C00-\u1C4F'
        },
        {
            name: 'InLetterlike_Symbols',
            bmp: '\u2100-\u214F'
        },
        {
            name: 'InLimbu',
            bmp: '\u1900-\u194F'
        },
        {
            name: 'InLinear_B_Ideograms',
            astral: '\uD800[\uDC80-\uDCFF]'
        },
        {
            name: 'InLinear_B_Syllabary',
            astral: '\uD800[\uDC00-\uDC7F]'
        },
        {
            name: 'InLisu',
            bmp: '\uA4D0-\uA4FF'
        },
        {
            name: 'InLow_Surrogates',
            bmp: '\uDC00-\uDFFF'
        },
        {
            name: 'InLycian',
            astral: '\uD800[\uDE80-\uDE9F]'
        },
        {
            name: 'InLydian',
            astral: '\uD802[\uDD20-\uDD3F]'
        },
        {
            name: 'InMahjong_Tiles',
            astral: '\uD83C[\uDC00-\uDC2F]'
        },
        {
            name: 'InMalayalam',
            bmp: '\u0D00-\u0D7F'
        },
        {
            name: 'InMandaic',
            bmp: '\u0840-\u085F'
        },
        {
            name: 'InMathematical_Alphanumeric_Symbols',
            astral: '\uD835[\uDC00-\uDFFF]'
        },
        {
            name: 'InMathematical_Operators',
            bmp: '\u2200-\u22FF'
        },
        {
            name: 'InMeetei_Mayek',
            bmp: '\uABC0-\uABFF'
        },
        {
            name: 'InMeetei_Mayek_Extensions',
            bmp: '\uAAE0-\uAAFF'
        },
        {
            name: 'InMeroitic_Cursive',
            astral: '\uD802[\uDDA0-\uDDFF]'
        },
        {
            name: 'InMeroitic_Hieroglyphs',
            astral: '\uD802[\uDD80-\uDD9F]'
        },
        {
            name: 'InMiao',
            astral: '\uD81B[\uDF00-\uDF9F]'
        },
        {
            name: 'InMiscellaneous_Mathematical_Symbols_A',
            bmp: '\u27C0-\u27EF'
        },
        {
            name: 'InMiscellaneous_Mathematical_Symbols_B',
            bmp: '\u2980-\u29FF'
        },
        {
            name: 'InMiscellaneous_Symbols',
            bmp: '\u2600-\u26FF'
        },
        {
            name: 'InMiscellaneous_Symbols_And_Pictographs',
            astral: '\uD83D[\uDC00-\uDDFF]|\uD83C[\uDF00-\uDFFF]'
        },
        {
            name: 'InMiscellaneous_Symbols_and_Arrows',
            bmp: '\u2B00-\u2BFF'
        },
        {
            name: 'InMiscellaneous_Technical',
            bmp: '\u2300-\u23FF'
        },
        {
            name: 'InModifier_Tone_Letters',
            bmp: '\uA700-\uA71F'
        },
        {
            name: 'InMongolian',
            bmp: '\u1800-\u18AF'
        },
        {
            name: 'InMusical_Symbols',
            astral: '\uD834[\uDD00-\uDDFF]'
        },
        {
            name: 'InMyanmar',
            bmp: '\u1000-\u109F'
        },
        {
            name: 'InMyanmar_Extended_A',
            bmp: '\uAA60-\uAA7F'
        },
        {
            name: 'InNKo',
            bmp: '\u07C0-\u07FF'
        },
        {
            name: 'InNew_Tai_Lue',
            bmp: '\u1980-\u19DF'
        },
        {
            name: 'InNumber_Forms',
            bmp: '\u2150-\u218F'
        },
        {
            name: 'InOgham',
            bmp: '\u1680-\u169F'
        },
        {
            name: 'InOl_Chiki',
            bmp: '\u1C50-\u1C7F'
        },
        {
            name: 'InOld_Italic',
            astral: '\uD800[\uDF00-\uDF2F]'
        },
        {
            name: 'InOld_Persian',
            astral: '\uD800[\uDFA0-\uDFDF]'
        },
        {
            name: 'InOld_South_Arabian',
            astral: '\uD802[\uDE60-\uDE7F]'
        },
        {
            name: 'InOld_Turkic',
            astral: '\uD803[\uDC00-\uDC4F]'
        },
        {
            name: 'InOptical_Character_Recognition',
            bmp: '\u2440-\u245F'
        },
        {
            name: 'InOriya',
            bmp: '\u0B00-\u0B7F'
        },
        {
            name: 'InOsmanya',
            astral: '\uD801[\uDC80-\uDCAF]'
        },
        {
            name: 'InPhags_pa',
            bmp: '\uA840-\uA87F'
        },
        {
            name: 'InPhaistos_Disc',
            astral: '\uD800[\uDDD0-\uDDFF]'
        },
        {
            name: 'InPhoenician',
            astral: '\uD802[\uDD00-\uDD1F]'
        },
        {
            name: 'InPhonetic_Extensions',
            bmp: '\u1D00-\u1D7F'
        },
        {
            name: 'InPhonetic_Extensions_Supplement',
            bmp: '\u1D80-\u1DBF'
        },
        {
            name: 'InPlaying_Cards',
            astral: '\uD83C[\uDCA0-\uDCFF]'
        },
        {
            name: 'InPrivate_Use_Area',
            bmp: '\uE000-\uF8FF'
        },
        {
            name: 'InRejang',
            bmp: '\uA930-\uA95F'
        },
        {
            name: 'InRumi_Numeral_Symbols',
            astral: '\uD803[\uDE60-\uDE7F]'
        },
        {
            name: 'InRunic',
            bmp: '\u16A0-\u16FF'
        },
        {
            name: 'InSamaritan',
            bmp: '\u0800-\u083F'
        },
        {
            name: 'InSaurashtra',
            bmp: '\uA880-\uA8DF'
        },
        {
            name: 'InSharada',
            astral: '\uD804[\uDD80-\uDDDF]'
        },
        {
            name: 'InShavian',
            astral: '\uD801[\uDC50-\uDC7F]'
        },
        {
            name: 'InSinhala',
            bmp: '\u0D80-\u0DFF'
        },
        {
            name: 'InSmall_Form_Variants',
            bmp: '\uFE50-\uFE6F'
        },
        {
            name: 'InSora_Sompeng',
            astral: '\uD804[\uDCD0-\uDCFF]'
        },
        {
            name: 'InSpacing_Modifier_Letters',
            bmp: '\u02B0-\u02FF'
        },
        {
            name: 'InSpecials',
            bmp: '\uFFF0-\uFFFF'
        },
        {
            name: 'InSundanese',
            bmp: '\u1B80-\u1BBF'
        },
        {
            name: 'InSundanese_Supplement',
            bmp: '\u1CC0-\u1CCF'
        },
        {
            name: 'InSuperscripts_and_Subscripts',
            bmp: '\u2070-\u209F'
        },
        {
            name: 'InSupplemental_Arrows_A',
            bmp: '\u27F0-\u27FF'
        },
        {
            name: 'InSupplemental_Arrows_B',
            bmp: '\u2900-\u297F'
        },
        {
            name: 'InSupplemental_Mathematical_Operators',
            bmp: '\u2A00-\u2AFF'
        },
        {
            name: 'InSupplemental_Punctuation',
            bmp: '\u2E00-\u2E7F'
        },
        {
            name: 'InSupplementary_Private_Use_Area_A',
            astral: '[\uDB80-\uDBBF][\uDC00-\uDFFF]'
        },
        {
            name: 'InSupplementary_Private_Use_Area_B',
            astral: '[\uDBC0-\uDBFF][\uDC00-\uDFFF]'
        },
        {
            name: 'InSyloti_Nagri',
            bmp: '\uA800-\uA82F'
        },
        {
            name: 'InSyriac',
            bmp: '\u0700-\u074F'
        },
        {
            name: 'InTagalog',
            bmp: '\u1700-\u171F'
        },
        {
            name: 'InTagbanwa',
            bmp: '\u1760-\u177F'
        },
        {
            name: 'InTags',
            astral: '\uDB40[\uDC00-\uDC7F]'
        },
        {
            name: 'InTai_Le',
            bmp: '\u1950-\u197F'
        },
        {
            name: 'InTai_Tham',
            bmp: '\u1A20-\u1AAF'
        },
        {
            name: 'InTai_Viet',
            bmp: '\uAA80-\uAADF'
        },
        {
            name: 'InTai_Xuan_Jing_Symbols',
            astral: '\uD834[\uDF00-\uDF5F]'
        },
        {
            name: 'InTakri',
            astral: '\uD805[\uDE80-\uDECF]'
        },
        {
            name: 'InTamil',
            bmp: '\u0B80-\u0BFF'
        },
        {
            name: 'InTelugu',
            bmp: '\u0C00-\u0C7F'
        },
        {
            name: 'InThaana',
            bmp: '\u0780-\u07BF'
        },
        {
            name: 'InThai',
            bmp: '\u0E00-\u0E7F'
        },
        {
            name: 'InTibetan',
            bmp: '\u0F00-\u0FFF'
        },
        {
            name: 'InTifinagh',
            bmp: '\u2D30-\u2D7F'
        },
        {
            name: 'InTransport_And_Map_Symbols',
            astral: '\uD83D[\uDE80-\uDEFF]'
        },
        {
            name: 'InUgaritic',
            astral: '\uD800[\uDF80-\uDF9F]'
        },
        {
            name: 'InUnified_Canadian_Aboriginal_Syllabics',
            bmp: '\u1400-\u167F'
        },
        {
            name: 'InUnified_Canadian_Aboriginal_Syllabics_Extended',
            bmp: '\u18B0-\u18FF'
        },
        {
            name: 'InVai',
            bmp: '\uA500-\uA63F'
        },
        {
            name: 'InVariation_Selectors',
            bmp: '\uFE00-\uFE0F'
        },
        {
            name: 'InVariation_Selectors_Supplement',
            astral: '\uDB40[\uDD00-\uDDEF]'
        },
        {
            name: 'InVedic_Extensions',
            bmp: '\u1CD0-\u1CFF'
        },
        {
            name: 'InVertical_Forms',
            bmp: '\uFE10-\uFE1F'
        },
        {
            name: 'InYi_Radicals',
            bmp: '\uA490-\uA4CF'
        },
        {
            name: 'InYi_Syllables',
            bmp: '\uA000-\uA48F'
        },
        {
            name: 'InYijing_Hexagram_Symbols',
            bmp: '\u4DC0-\u4DFF'
        }
    ]);

}(XRegExp));

/*!
 * XRegExp Unicode Categories 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2010-2012 MIT License
 * Uses Unicode 6.2.0 <http://unicode.org/>
 * Unicode data generated by Mathias Bynens <http://mathiasbynens.be/>
 */

/**
 * Adds support for all Unicode categories. E.g., `\p{Lu}` or `\p{Uppercase Letter}`. Token names
 * are case insensitive, and any spaces, hyphens, and underscores are ignored.
 * @requires XRegExp, Unicode Base
 */
(function(XRegExp) {
    

    if (!XRegExp.addUnicodeData) {
        throw new ReferenceError('Unicode Base must be loaded before Unicode Categories');
    }

    XRegExp.addUnicodeData([
        {
            name: 'C',
            alias: 'Other',
            isBmpLast: true,
            bmp: '\0-\x1F\x7F-\x9F\xAD\u0378\u0379\u037F-\u0383\u038B\u038D\u03A2\u0528-\u0530\u0557\u0558\u0560\u0588\u058B-\u058E\u0590\u05C8-\u05CF\u05EB-\u05EF\u05F5-\u0605\u061C\u061D\u06DD\u070E\u070F\u074B\u074C\u07B2-\u07BF\u07FB-\u07FF\u082E\u082F\u083F\u085C\u085D\u085F-\u089F\u08A1\u08AD-\u08E3\u08FF\u0978\u0980\u0984\u098D\u098E\u0991\u0992\u09A9\u09B1\u09B3-\u09B5\u09BA\u09BB\u09C5\u09C6\u09C9\u09CA\u09CF-\u09D6\u09D8-\u09DB\u09DE\u09E4\u09E5\u09FC-\u0A00\u0A04\u0A0B-\u0A0E\u0A11\u0A12\u0A29\u0A31\u0A34\u0A37\u0A3A\u0A3B\u0A3D\u0A43-\u0A46\u0A49\u0A4A\u0A4E-\u0A50\u0A52-\u0A58\u0A5D\u0A5F-\u0A65\u0A76-\u0A80\u0A84\u0A8E\u0A92\u0AA9\u0AB1\u0AB4\u0ABA\u0ABB\u0AC6\u0ACA\u0ACE\u0ACF\u0AD1-\u0ADF\u0AE4\u0AE5\u0AF2-\u0B00\u0B04\u0B0D\u0B0E\u0B11\u0B12\u0B29\u0B31\u0B34\u0B3A\u0B3B\u0B45\u0B46\u0B49\u0B4A\u0B4E-\u0B55\u0B58-\u0B5B\u0B5E\u0B64\u0B65\u0B78-\u0B81\u0B84\u0B8B-\u0B8D\u0B91\u0B96-\u0B98\u0B9B\u0B9D\u0BA0-\u0BA2\u0BA5-\u0BA7\u0BAB-\u0BAD\u0BBA-\u0BBD\u0BC3-\u0BC5\u0BC9\u0BCE\u0BCF\u0BD1-\u0BD6\u0BD8-\u0BE5\u0BFB-\u0C00\u0C04\u0C0D\u0C11\u0C29\u0C34\u0C3A-\u0C3C\u0C45\u0C49\u0C4E-\u0C54\u0C57\u0C5A-\u0C5F\u0C64\u0C65\u0C70-\u0C77\u0C80\u0C81\u0C84\u0C8D\u0C91\u0CA9\u0CB4\u0CBA\u0CBB\u0CC5\u0CC9\u0CCE-\u0CD4\u0CD7-\u0CDD\u0CDF\u0CE4\u0CE5\u0CF0\u0CF3-\u0D01\u0D04\u0D0D\u0D11\u0D3B\u0D3C\u0D45\u0D49\u0D4F-\u0D56\u0D58-\u0D5F\u0D64\u0D65\u0D76-\u0D78\u0D80\u0D81\u0D84\u0D97-\u0D99\u0DB2\u0DBC\u0DBE\u0DBF\u0DC7-\u0DC9\u0DCB-\u0DCE\u0DD5\u0DD7\u0DE0-\u0DF1\u0DF5-\u0E00\u0E3B-\u0E3E\u0E5C-\u0E80\u0E83\u0E85\u0E86\u0E89\u0E8B\u0E8C\u0E8E-\u0E93\u0E98\u0EA0\u0EA4\u0EA6\u0EA8\u0EA9\u0EAC\u0EBA\u0EBE\u0EBF\u0EC5\u0EC7\u0ECE\u0ECF\u0EDA\u0EDB\u0EE0-\u0EFF\u0F48\u0F6D-\u0F70\u0F98\u0FBD\u0FCD\u0FDB-\u0FFF\u10C6\u10C8-\u10CC\u10CE\u10CF\u1249\u124E\u124F\u1257\u1259\u125E\u125F\u1289\u128E\u128F\u12B1\u12B6\u12B7\u12BF\u12C1\u12C6\u12C7\u12D7\u1311\u1316\u1317\u135B\u135C\u137D-\u137F\u139A-\u139F\u13F5-\u13FF\u169D-\u169F\u16F1-\u16FF\u170D\u1715-\u171F\u1737-\u173F\u1754-\u175F\u176D\u1771\u1774-\u177F\u17DE\u17DF\u17EA-\u17EF\u17FA-\u17FF\u180F\u181A-\u181F\u1878-\u187F\u18AB-\u18AF\u18F6-\u18FF\u191D-\u191F\u192C-\u192F\u193C-\u193F\u1941-\u1943\u196E\u196F\u1975-\u197F\u19AC-\u19AF\u19CA-\u19CF\u19DB-\u19DD\u1A1C\u1A1D\u1A5F\u1A7D\u1A7E\u1A8A-\u1A8F\u1A9A-\u1A9F\u1AAE-\u1AFF\u1B4C-\u1B4F\u1B7D-\u1B7F\u1BF4-\u1BFB\u1C38-\u1C3A\u1C4A-\u1C4C\u1C80-\u1CBF\u1CC8-\u1CCF\u1CF7-\u1CFF\u1DE7-\u1DFB\u1F16\u1F17\u1F1E\u1F1F\u1F46\u1F47\u1F4E\u1F4F\u1F58\u1F5A\u1F5C\u1F5E\u1F7E\u1F7F\u1FB5\u1FC5\u1FD4\u1FD5\u1FDC\u1FF0\u1FF1\u1FF5\u1FFF\u200B-\u200F\u202A-\u202E\u2060-\u206F\u2072\u2073\u208F\u209D-\u209F\u20BB-\u20CF\u20F1-\u20FF\u218A-\u218F\u23F4-\u23FF\u2427-\u243F\u244B-\u245F\u2700\u2B4D-\u2B4F\u2B5A-\u2BFF\u2C2F\u2C5F\u2CF4-\u2CF8\u2D26\u2D28-\u2D2C\u2D2E\u2D2F\u2D68-\u2D6E\u2D71-\u2D7E\u2D97-\u2D9F\u2DA7\u2DAF\u2DB7\u2DBF\u2DC7\u2DCF\u2DD7\u2DDF\u2E3C-\u2E7F\u2E9A\u2EF4-\u2EFF\u2FD6-\u2FEF\u2FFC-\u2FFF\u3040\u3097\u3098\u3100-\u3104\u312E-\u3130\u318F\u31BB-\u31BF\u31E4-\u31EF\u321F\u32FF\u4DB6-\u4DBF\u9FCD-\u9FFF\uA48D-\uA48F\uA4C7-\uA4CF\uA62C-\uA63F\uA698-\uA69E\uA6F8-\uA6FF\uA78F\uA794-\uA79F\uA7AB-\uA7F7\uA82C-\uA82F\uA83A-\uA83F\uA878-\uA87F\uA8C5-\uA8CD\uA8DA-\uA8DF\uA8FC-\uA8FF\uA954-\uA95E\uA97D-\uA97F\uA9CE\uA9DA-\uA9DD\uA9E0-\uA9FF\uAA37-\uAA3F\uAA4E\uAA4F\uAA5A\uAA5B\uAA7C-\uAA7F\uAAC3-\uAADA\uAAF7-\uAB00\uAB07\uAB08\uAB0F\uAB10\uAB17-\uAB1F\uAB27\uAB2F-\uABBF\uABEE\uABEF\uABFA-\uABFF\uD7A4-\uD7AF\uD7C7-\uD7CA\uD7FC-\uF8FF\uFA6E\uFA6F\uFADA-\uFAFF\uFB07-\uFB12\uFB18-\uFB1C\uFB37\uFB3D\uFB3F\uFB42\uFB45\uFBC2-\uFBD2\uFD40-\uFD4F\uFD90\uFD91\uFDC8-\uFDEF\uFDFE\uFDFF\uFE1A-\uFE1F\uFE27-\uFE2F\uFE53\uFE67\uFE6C-\uFE6F\uFE75\uFEFD-\uFF00\uFFBF-\uFFC1\uFFC8\uFFC9\uFFD0\uFFD1\uFFD8\uFFD9\uFFDD-\uFFDF\uFFE7\uFFEF-\uFFFB\uFFFE\uFFFF',
            astral: '\uD808[\uDF6F-\uDFFF]|\uD809[\uDC63-\uDC6F\uDC74-\uDFFF]|\uD804[\uDC4E-\uDC51\uDC70-\uDC7F\uDCBD\uDCC2-\uDCCF\uDCE9-\uDCEF\uDCFA-\uDCFF\uDD35\uDD44-\uDD7F\uDDC9-\uDDCF\uDDDA-\uDFFF]|\uD802[\uDC06\uDC07\uDC09\uDC36\uDC39-\uDC3B\uDC3D\uDC3E\uDC56\uDC60-\uDCFF\uDD1C-\uDD1E\uDD3A-\uDD3E\uDD40-\uDD7F\uDDB8-\uDDBD\uDDC0-\uDDFF\uDE04\uDE07-\uDE0B\uDE14\uDE18\uDE34-\uDE37\uDE3B-\uDE3E\uDE48-\uDE4F\uDE59-\uDE5F\uDE80-\uDEFF\uDF36-\uDF38\uDF56\uDF57\uDF73-\uDF77\uDF80-\uDFFF]|\uD86D[\uDF35-\uDF3F]|\uD81B[\uDC00-\uDEFF\uDF45-\uDF4F\uDF7F-\uDF8E\uDFA0-\uDFFF]|\uD86E[\uDC1E-\uDFFF]|\uD800[\uDC0C\uDC27\uDC3B\uDC3E\uDC4E\uDC4F\uDC5E-\uDC7F\uDCFB-\uDCFF\uDD03-\uDD06\uDD34-\uDD36\uDD8B-\uDD8F\uDD9C-\uDDCF\uDDFE-\uDE7F\uDE9D-\uDE9F\uDED1-\uDEFF\uDF1F\uDF24-\uDF2F\uDF4B-\uDF7F\uDF9E\uDFC4-\uDFC7\uDFD6-\uDFFF]|\uD869[\uDED7-\uDEFF]|\uD83B[\uDC00-\uDDFF\uDE04\uDE20\uDE23\uDE25\uDE26\uDE28\uDE33\uDE38\uDE3A\uDE3C-\uDE41\uDE43-\uDE46\uDE48\uDE4A\uDE4C\uDE50\uDE53\uDE55\uDE56\uDE58\uDE5A\uDE5C\uDE5E\uDE60\uDE63\uDE65\uDE66\uDE6B\uDE73\uDE78\uDE7D\uDE7F\uDE8A\uDE9C-\uDEA0\uDEA4\uDEAA\uDEBC-\uDEEF\uDEF2-\uDFFF]|\uD87E[\uDE1E-\uDFFF]|\uDB40[\uDC00-\uDCFF\uDDF0-\uDFFF]|\uD803[\uDC49-\uDE5F\uDE7F-\uDFFF]|\uD80D[\uDC2F-\uDFFF]|[\uD806\uD807\uD80A\uD80B\uD80E-\uD819\uD81C-\uD82B\uD82D-\uD833\uD836-\uD83A\uD83E\uD83F\uD86F-\uD87D\uD87F-\uDB3F\uDB41-\uDBFF][\uDC00-\uDFFF]|\uD83D[\uDC3F\uDC41\uDCF8\uDCFD-\uDCFF\uDD3E\uDD3F\uDD44-\uDD4F\uDD68-\uDDFA\uDE41-\uDE44\uDE50-\uDE7F\uDEC6-\uDEFF\uDF74-\uDFFF]|\uD83C[\uDC2C-\uDC2F\uDC94-\uDC9F\uDCAF\uDCB0\uDCBF\uDCC0\uDCD0\uDCE0-\uDCFF\uDD0B-\uDD0F\uDD2F\uDD6C-\uDD6F\uDD9B-\uDDE5\uDE03-\uDE0F\uDE3B-\uDE3F\uDE49-\uDE4F\uDE52-\uDEFF\uDF21-\uDF2F\uDF36\uDF7D-\uDF7F\uDF94-\uDF9F\uDFC5\uDFCB-\uDFDF\uDFF1-\uDFFF]|\uD835[\uDC55\uDC9D\uDCA0\uDCA1\uDCA3\uDCA4\uDCA7\uDCA8\uDCAD\uDCBA\uDCBC\uDCC4\uDD06\uDD0B\uDD0C\uDD15\uDD1D\uDD3A\uDD3F\uDD45\uDD47-\uDD49\uDD51\uDEA6\uDEA7\uDFCC\uDFCD]|\uD81A[\uDE39-\uDFFF]|\uD834[\uDCF6-\uDCFF\uDD27\uDD28\uDD73-\uDD7A\uDDDE-\uDDFF\uDE46-\uDEFF\uDF57-\uDF5F\uDF72-\uDFFF]|\uD801[\uDC9E\uDC9F\uDCAA-\uDFFF]|\uD805[\uDC00-\uDE7F\uDEB8-\uDEBF\uDECA-\uDFFF]|\uD82C[\uDC02-\uDFFF]'
        },
        {
            name: 'Cc',
            alias: 'Control',
            bmp: '\0-\x1F\x7F-\x9F'
        },
        {
            name: 'Cf',
            alias: 'Format',
            bmp: '\xAD\u0600-\u0604\u06DD\u070F\u200B-\u200F\u202A-\u202E\u2060-\u2064\u206A-\u206F\uFEFF\uFFF9-\uFFFB',
            astral: '\uDB40[\uDC01\uDC20-\uDC7F]|\uD834[\uDD73-\uDD7A]|\uD804\uDCBD'
        },
        {
            name: 'Cn',
            alias: 'Unassigned',
            bmp: '\u0378\u0379\u037F-\u0383\u038B\u038D\u03A2\u0528-\u0530\u0557\u0558\u0560\u0588\u058B-\u058E\u0590\u05C8-\u05CF\u05EB-\u05EF\u05F5-\u05FF\u0605\u061C\u061D\u070E\u074B\u074C\u07B2-\u07BF\u07FB-\u07FF\u082E\u082F\u083F\u085C\u085D\u085F-\u089F\u08A1\u08AD-\u08E3\u08FF\u0978\u0980\u0984\u098D\u098E\u0991\u0992\u09A9\u09B1\u09B3-\u09B5\u09BA\u09BB\u09C5\u09C6\u09C9\u09CA\u09CF-\u09D6\u09D8-\u09DB\u09DE\u09E4\u09E5\u09FC-\u0A00\u0A04\u0A0B-\u0A0E\u0A11\u0A12\u0A29\u0A31\u0A34\u0A37\u0A3A\u0A3B\u0A3D\u0A43-\u0A46\u0A49\u0A4A\u0A4E-\u0A50\u0A52-\u0A58\u0A5D\u0A5F-\u0A65\u0A76-\u0A80\u0A84\u0A8E\u0A92\u0AA9\u0AB1\u0AB4\u0ABA\u0ABB\u0AC6\u0ACA\u0ACE\u0ACF\u0AD1-\u0ADF\u0AE4\u0AE5\u0AF2-\u0B00\u0B04\u0B0D\u0B0E\u0B11\u0B12\u0B29\u0B31\u0B34\u0B3A\u0B3B\u0B45\u0B46\u0B49\u0B4A\u0B4E-\u0B55\u0B58-\u0B5B\u0B5E\u0B64\u0B65\u0B78-\u0B81\u0B84\u0B8B-\u0B8D\u0B91\u0B96-\u0B98\u0B9B\u0B9D\u0BA0-\u0BA2\u0BA5-\u0BA7\u0BAB-\u0BAD\u0BBA-\u0BBD\u0BC3-\u0BC5\u0BC9\u0BCE\u0BCF\u0BD1-\u0BD6\u0BD8-\u0BE5\u0BFB-\u0C00\u0C04\u0C0D\u0C11\u0C29\u0C34\u0C3A-\u0C3C\u0C45\u0C49\u0C4E-\u0C54\u0C57\u0C5A-\u0C5F\u0C64\u0C65\u0C70-\u0C77\u0C80\u0C81\u0C84\u0C8D\u0C91\u0CA9\u0CB4\u0CBA\u0CBB\u0CC5\u0CC9\u0CCE-\u0CD4\u0CD7-\u0CDD\u0CDF\u0CE4\u0CE5\u0CF0\u0CF3-\u0D01\u0D04\u0D0D\u0D11\u0D3B\u0D3C\u0D45\u0D49\u0D4F-\u0D56\u0D58-\u0D5F\u0D64\u0D65\u0D76-\u0D78\u0D80\u0D81\u0D84\u0D97-\u0D99\u0DB2\u0DBC\u0DBE\u0DBF\u0DC7-\u0DC9\u0DCB-\u0DCE\u0DD5\u0DD7\u0DE0-\u0DF1\u0DF5-\u0E00\u0E3B-\u0E3E\u0E5C-\u0E80\u0E83\u0E85\u0E86\u0E89\u0E8B\u0E8C\u0E8E-\u0E93\u0E98\u0EA0\u0EA4\u0EA6\u0EA8\u0EA9\u0EAC\u0EBA\u0EBE\u0EBF\u0EC5\u0EC7\u0ECE\u0ECF\u0EDA\u0EDB\u0EE0-\u0EFF\u0F48\u0F6D-\u0F70\u0F98\u0FBD\u0FCD\u0FDB-\u0FFF\u10C6\u10C8-\u10CC\u10CE\u10CF\u1249\u124E\u124F\u1257\u1259\u125E\u125F\u1289\u128E\u128F\u12B1\u12B6\u12B7\u12BF\u12C1\u12C6\u12C7\u12D7\u1311\u1316\u1317\u135B\u135C\u137D-\u137F\u139A-\u139F\u13F5-\u13FF\u169D-\u169F\u16F1-\u16FF\u170D\u1715-\u171F\u1737-\u173F\u1754-\u175F\u176D\u1771\u1774-\u177F\u17DE\u17DF\u17EA-\u17EF\u17FA-\u17FF\u180F\u181A-\u181F\u1878-\u187F\u18AB-\u18AF\u18F6-\u18FF\u191D-\u191F\u192C-\u192F\u193C-\u193F\u1941-\u1943\u196E\u196F\u1975-\u197F\u19AC-\u19AF\u19CA-\u19CF\u19DB-\u19DD\u1A1C\u1A1D\u1A5F\u1A7D\u1A7E\u1A8A-\u1A8F\u1A9A-\u1A9F\u1AAE-\u1AFF\u1B4C-\u1B4F\u1B7D-\u1B7F\u1BF4-\u1BFB\u1C38-\u1C3A\u1C4A-\u1C4C\u1C80-\u1CBF\u1CC8-\u1CCF\u1CF7-\u1CFF\u1DE7-\u1DFB\u1F16\u1F17\u1F1E\u1F1F\u1F46\u1F47\u1F4E\u1F4F\u1F58\u1F5A\u1F5C\u1F5E\u1F7E\u1F7F\u1FB5\u1FC5\u1FD4\u1FD5\u1FDC\u1FF0\u1FF1\u1FF5\u1FFF\u2065-\u2069\u2072\u2073\u208F\u209D-\u209F\u20BB-\u20CF\u20F1-\u20FF\u218A-\u218F\u23F4-\u23FF\u2427-\u243F\u244B-\u245F\u2700\u2B4D-\u2B4F\u2B5A-\u2BFF\u2C2F\u2C5F\u2CF4-\u2CF8\u2D26\u2D28-\u2D2C\u2D2E\u2D2F\u2D68-\u2D6E\u2D71-\u2D7E\u2D97-\u2D9F\u2DA7\u2DAF\u2DB7\u2DBF\u2DC7\u2DCF\u2DD7\u2DDF\u2E3C-\u2E7F\u2E9A\u2EF4-\u2EFF\u2FD6-\u2FEF\u2FFC-\u2FFF\u3040\u3097\u3098\u3100-\u3104\u312E-\u3130\u318F\u31BB-\u31BF\u31E4-\u31EF\u321F\u32FF\u4DB6-\u4DBF\u9FCD-\u9FFF\uA48D-\uA48F\uA4C7-\uA4CF\uA62C-\uA63F\uA698-\uA69E\uA6F8-\uA6FF\uA78F\uA794-\uA79F\uA7AB-\uA7F7\uA82C-\uA82F\uA83A-\uA83F\uA878-\uA87F\uA8C5-\uA8CD\uA8DA-\uA8DF\uA8FC-\uA8FF\uA954-\uA95E\uA97D-\uA97F\uA9CE\uA9DA-\uA9DD\uA9E0-\uA9FF\uAA37-\uAA3F\uAA4E\uAA4F\uAA5A\uAA5B\uAA7C-\uAA7F\uAAC3-\uAADA\uAAF7-\uAB00\uAB07\uAB08\uAB0F\uAB10\uAB17-\uAB1F\uAB27\uAB2F-\uABBF\uABEE\uABEF\uABFA-\uABFF\uD7A4-\uD7AF\uD7C7-\uD7CA\uD7FC-\uD7FF\uFA6E\uFA6F\uFADA-\uFAFF\uFB07-\uFB12\uFB18-\uFB1C\uFB37\uFB3D\uFB3F\uFB42\uFB45\uFBC2-\uFBD2\uFD40-\uFD4F\uFD90\uFD91\uFDC8-\uFDEF\uFDFE\uFDFF\uFE1A-\uFE1F\uFE27-\uFE2F\uFE53\uFE67\uFE6C-\uFE6F\uFE75\uFEFD\uFEFE\uFF00\uFFBF-\uFFC1\uFFC8\uFFC9\uFFD0\uFFD1\uFFD8\uFFD9\uFFDD-\uFFDF\uFFE7\uFFEF-\uFFF8\uFFFE\uFFFF',
            astral: '\uD808[\uDF6F-\uDFFF]|\uDB40[\uDC00\uDC02-\uDC1F\uDC80-\uDCFF\uDDF0-\uDFFF]|\uD834[\uDCF6-\uDCFF\uDD27\uDD28\uDDDE-\uDDFF\uDE46-\uDEFF\uDF57-\uDF5F\uDF72-\uDFFF]|\uD802[\uDC06\uDC07\uDC09\uDC36\uDC39-\uDC3B\uDC3D\uDC3E\uDC56\uDC60-\uDCFF\uDD1C-\uDD1E\uDD3A-\uDD3E\uDD40-\uDD7F\uDDB8-\uDDBD\uDDC0-\uDDFF\uDE04\uDE07-\uDE0B\uDE14\uDE18\uDE34-\uDE37\uDE3B-\uDE3E\uDE48-\uDE4F\uDE59-\uDE5F\uDE80-\uDEFF\uDF36-\uDF38\uDF56\uDF57\uDF73-\uDF77\uDF80-\uDFFF]|\uD86D[\uDF35-\uDF3F]|\uD81B[\uDC00-\uDEFF\uDF45-\uDF4F\uDF7F-\uDF8E\uDFA0-\uDFFF]|\uD809[\uDC63-\uDC6F\uDC74-\uDFFF]|\uD800[\uDC0C\uDC27\uDC3B\uDC3E\uDC4E\uDC4F\uDC5E-\uDC7F\uDCFB-\uDCFF\uDD03-\uDD06\uDD34-\uDD36\uDD8B-\uDD8F\uDD9C-\uDDCF\uDDFE-\uDE7F\uDE9D-\uDE9F\uDED1-\uDEFF\uDF1F\uDF24-\uDF2F\uDF4B-\uDF7F\uDF9E\uDFC4-\uDFC7\uDFD6-\uDFFF]|\uD869[\uDED7-\uDEFF]|\uD804[\uDC4E-\uDC51\uDC70-\uDC7F\uDCC2-\uDCCF\uDCE9-\uDCEF\uDCFA-\uDCFF\uDD35\uDD44-\uDD7F\uDDC9-\uDDCF\uDDDA-\uDFFF]|\uD83B[\uDC00-\uDDFF\uDE04\uDE20\uDE23\uDE25\uDE26\uDE28\uDE33\uDE38\uDE3A\uDE3C-\uDE41\uDE43-\uDE46\uDE48\uDE4A\uDE4C\uDE50\uDE53\uDE55\uDE56\uDE58\uDE5A\uDE5C\uDE5E\uDE60\uDE63\uDE65\uDE66\uDE6B\uDE73\uDE78\uDE7D\uDE7F\uDE8A\uDE9C-\uDEA0\uDEA4\uDEAA\uDEBC-\uDEEF\uDEF2-\uDFFF]|[\uDBBF\uDBFF][\uDFFE\uDFFF]|\uD87E[\uDE1E-\uDFFF]|\uD803[\uDC49-\uDE5F\uDE7F-\uDFFF]|\uD80D[\uDC2F-\uDFFF]|[\uD806\uD807\uD80A\uD80B\uD80E-\uD819\uD81C-\uD82B\uD82D-\uD833\uD836-\uD83A\uD83E\uD83F\uD86F-\uD87D\uD87F-\uDB3F\uDB41-\uDB7F][\uDC00-\uDFFF]|\uD83D[\uDC3F\uDC41\uDCF8\uDCFD-\uDCFF\uDD3E\uDD3F\uDD44-\uDD4F\uDD68-\uDDFA\uDE41-\uDE44\uDE50-\uDE7F\uDEC6-\uDEFF\uDF74-\uDFFF]|\uD86E[\uDC1E-\uDFFF]|\uD83C[\uDC2C-\uDC2F\uDC94-\uDC9F\uDCAF\uDCB0\uDCBF\uDCC0\uDCD0\uDCE0-\uDCFF\uDD0B-\uDD0F\uDD2F\uDD6C-\uDD6F\uDD9B-\uDDE5\uDE03-\uDE0F\uDE3B-\uDE3F\uDE49-\uDE4F\uDE52-\uDEFF\uDF21-\uDF2F\uDF36\uDF7D-\uDF7F\uDF94-\uDF9F\uDFC5\uDFCB-\uDFDF\uDFF1-\uDFFF]|\uD835[\uDC55\uDC9D\uDCA0\uDCA1\uDCA3\uDCA4\uDCA7\uDCA8\uDCAD\uDCBA\uDCBC\uDCC4\uDD06\uDD0B\uDD0C\uDD15\uDD1D\uDD3A\uDD3F\uDD45\uDD47-\uDD49\uDD51\uDEA6\uDEA7\uDFCC\uDFCD]|\uD81A[\uDE39-\uDFFF]|\uD801[\uDC9E\uDC9F\uDCAA-\uDFFF]|\uD805[\uDC00-\uDE7F\uDEB8-\uDEBF\uDECA-\uDFFF]|\uD82C[\uDC02-\uDFFF]'
        },
        {
            name: 'Co',
            alias: 'Private_Use',
            bmp: '\uE000-\uF8FF',
            astral: '[\uDB80-\uDBBE\uDBC0-\uDBFE][\uDC00-\uDFFF]|[\uDBBF\uDBFF][\uDC00-\uDFFD]'
        },
        {
            name: 'Cs',
            alias: 'Surrogate',
            bmp: '\uD800-\uDFFF'
        },
        // Included in Unicode Base
        /*{
            name: 'L',
            alias: 'Letter',
            bmp: '...',
            astral: '...'
        },*/
        {
            name: 'Ll',
            alias: 'Lowercase_Letter',
            bmp: 'a-z\xB5\xDF-\xF6\xF8-\xFF\u0101\u0103\u0105\u0107\u0109\u010B\u010D\u010F\u0111\u0113\u0115\u0117\u0119\u011B\u011D\u011F\u0121\u0123\u0125\u0127\u0129\u012B\u012D\u012F\u0131\u0133\u0135\u0137\u0138\u013A\u013C\u013E\u0140\u0142\u0144\u0146\u0148\u0149\u014B\u014D\u014F\u0151\u0153\u0155\u0157\u0159\u015B\u015D\u015F\u0161\u0163\u0165\u0167\u0169\u016B\u016D\u016F\u0171\u0173\u0175\u0177\u017A\u017C\u017E-\u0180\u0183\u0185\u0188\u018C\u018D\u0192\u0195\u0199-\u019B\u019E\u01A1\u01A3\u01A5\u01A8\u01AA\u01AB\u01AD\u01B0\u01B4\u01B6\u01B9\u01BA\u01BD-\u01BF\u01C6\u01C9\u01CC\u01CE\u01D0\u01D2\u01D4\u01D6\u01D8\u01DA\u01DC\u01DD\u01DF\u01E1\u01E3\u01E5\u01E7\u01E9\u01EB\u01ED\u01EF\u01F0\u01F3\u01F5\u01F9\u01FB\u01FD\u01FF\u0201\u0203\u0205\u0207\u0209\u020B\u020D\u020F\u0211\u0213\u0215\u0217\u0219\u021B\u021D\u021F\u0221\u0223\u0225\u0227\u0229\u022B\u022D\u022F\u0231\u0233-\u0239\u023C\u023F\u0240\u0242\u0247\u0249\u024B\u024D\u024F-\u0293\u0295-\u02AF\u0371\u0373\u0377\u037B-\u037D\u0390\u03AC-\u03CE\u03D0\u03D1\u03D5-\u03D7\u03D9\u03DB\u03DD\u03DF\u03E1\u03E3\u03E5\u03E7\u03E9\u03EB\u03ED\u03EF-\u03F3\u03F5\u03F8\u03FB\u03FC\u0430-\u045F\u0461\u0463\u0465\u0467\u0469\u046B\u046D\u046F\u0471\u0473\u0475\u0477\u0479\u047B\u047D\u047F\u0481\u048B\u048D\u048F\u0491\u0493\u0495\u0497\u0499\u049B\u049D\u049F\u04A1\u04A3\u04A5\u04A7\u04A9\u04AB\u04AD\u04AF\u04B1\u04B3\u04B5\u04B7\u04B9\u04BB\u04BD\u04BF\u04C2\u04C4\u04C6\u04C8\u04CA\u04CC\u04CE\u04CF\u04D1\u04D3\u04D5\u04D7\u04D9\u04DB\u04DD\u04DF\u04E1\u04E3\u04E5\u04E7\u04E9\u04EB\u04ED\u04EF\u04F1\u04F3\u04F5\u04F7\u04F9\u04FB\u04FD\u04FF\u0501\u0503\u0505\u0507\u0509\u050B\u050D\u050F\u0511\u0513\u0515\u0517\u0519\u051B\u051D\u051F\u0521\u0523\u0525\u0527\u0561-\u0587\u1D00-\u1D2B\u1D6B-\u1D77\u1D79-\u1D9A\u1E01\u1E03\u1E05\u1E07\u1E09\u1E0B\u1E0D\u1E0F\u1E11\u1E13\u1E15\u1E17\u1E19\u1E1B\u1E1D\u1E1F\u1E21\u1E23\u1E25\u1E27\u1E29\u1E2B\u1E2D\u1E2F\u1E31\u1E33\u1E35\u1E37\u1E39\u1E3B\u1E3D\u1E3F\u1E41\u1E43\u1E45\u1E47\u1E49\u1E4B\u1E4D\u1E4F\u1E51\u1E53\u1E55\u1E57\u1E59\u1E5B\u1E5D\u1E5F\u1E61\u1E63\u1E65\u1E67\u1E69\u1E6B\u1E6D\u1E6F\u1E71\u1E73\u1E75\u1E77\u1E79\u1E7B\u1E7D\u1E7F\u1E81\u1E83\u1E85\u1E87\u1E89\u1E8B\u1E8D\u1E8F\u1E91\u1E93\u1E95-\u1E9D\u1E9F\u1EA1\u1EA3\u1EA5\u1EA7\u1EA9\u1EAB\u1EAD\u1EAF\u1EB1\u1EB3\u1EB5\u1EB7\u1EB9\u1EBB\u1EBD\u1EBF\u1EC1\u1EC3\u1EC5\u1EC7\u1EC9\u1ECB\u1ECD\u1ECF\u1ED1\u1ED3\u1ED5\u1ED7\u1ED9\u1EDB\u1EDD\u1EDF\u1EE1\u1EE3\u1EE5\u1EE7\u1EE9\u1EEB\u1EED\u1EEF\u1EF1\u1EF3\u1EF5\u1EF7\u1EF9\u1EFB\u1EFD\u1EFF-\u1F07\u1F10-\u1F15\u1F20-\u1F27\u1F30-\u1F37\u1F40-\u1F45\u1F50-\u1F57\u1F60-\u1F67\u1F70-\u1F7D\u1F80-\u1F87\u1F90-\u1F97\u1FA0-\u1FA7\u1FB0-\u1FB4\u1FB6\u1FB7\u1FBE\u1FC2-\u1FC4\u1FC6\u1FC7\u1FD0-\u1FD3\u1FD6\u1FD7\u1FE0-\u1FE7\u1FF2-\u1FF4\u1FF6\u1FF7\u210A\u210E\u210F\u2113\u212F\u2134\u2139\u213C\u213D\u2146-\u2149\u214E\u2184\u2C30-\u2C5E\u2C61\u2C65\u2C66\u2C68\u2C6A\u2C6C\u2C71\u2C73\u2C74\u2C76-\u2C7B\u2C81\u2C83\u2C85\u2C87\u2C89\u2C8B\u2C8D\u2C8F\u2C91\u2C93\u2C95\u2C97\u2C99\u2C9B\u2C9D\u2C9F\u2CA1\u2CA3\u2CA5\u2CA7\u2CA9\u2CAB\u2CAD\u2CAF\u2CB1\u2CB3\u2CB5\u2CB7\u2CB9\u2CBB\u2CBD\u2CBF\u2CC1\u2CC3\u2CC5\u2CC7\u2CC9\u2CCB\u2CCD\u2CCF\u2CD1\u2CD3\u2CD5\u2CD7\u2CD9\u2CDB\u2CDD\u2CDF\u2CE1\u2CE3\u2CE4\u2CEC\u2CEE\u2CF3\u2D00-\u2D25\u2D27\u2D2D\uA641\uA643\uA645\uA647\uA649\uA64B\uA64D\uA64F\uA651\uA653\uA655\uA657\uA659\uA65B\uA65D\uA65F\uA661\uA663\uA665\uA667\uA669\uA66B\uA66D\uA681\uA683\uA685\uA687\uA689\uA68B\uA68D\uA68F\uA691\uA693\uA695\uA697\uA723\uA725\uA727\uA729\uA72B\uA72D\uA72F-\uA731\uA733\uA735\uA737\uA739\uA73B\uA73D\uA73F\uA741\uA743\uA745\uA747\uA749\uA74B\uA74D\uA74F\uA751\uA753\uA755\uA757\uA759\uA75B\uA75D\uA75F\uA761\uA763\uA765\uA767\uA769\uA76B\uA76D\uA76F\uA771-\uA778\uA77A\uA77C\uA77F\uA781\uA783\uA785\uA787\uA78C\uA78E\uA791\uA793\uA7A1\uA7A3\uA7A5\uA7A7\uA7A9\uA7FA\uFB00-\uFB06\uFB13-\uFB17\uFF41-\uFF5A',
            astral: '\uD835[\uDC1A-\uDC33\uDC4E-\uDC54\uDC56-\uDC67\uDC82-\uDC9B\uDCB6-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDCCF\uDCEA-\uDD03\uDD1E-\uDD37\uDD52-\uDD6B\uDD86-\uDD9F\uDDBA-\uDDD3\uDDEE-\uDE07\uDE22-\uDE3B\uDE56-\uDE6F\uDE8A-\uDEA5\uDEC2-\uDEDA\uDEDC-\uDEE1\uDEFC-\uDF14\uDF16-\uDF1B\uDF36-\uDF4E\uDF50-\uDF55\uDF70-\uDF88\uDF8A-\uDF8F\uDFAA-\uDFC2\uDFC4-\uDFC9\uDFCB]|\uD801[\uDC28-\uDC4F]'
        },
        {
            name: 'Lm',
            alias: 'Modifier_Letter',
            bmp: '\u02B0-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0374\u037A\u0559\u0640\u06E5\u06E6\u07F4\u07F5\u07FA\u081A\u0824\u0828\u0971\u0E46\u0EC6\u10FC\u17D7\u1843\u1AA7\u1C78-\u1C7D\u1D2C-\u1D6A\u1D78\u1D9B-\u1DBF\u2071\u207F\u2090-\u209C\u2C7C\u2C7D\u2D6F\u2E2F\u3005\u3031-\u3035\u303B\u309D\u309E\u30FC-\u30FE\uA015\uA4F8-\uA4FD\uA60C\uA67F\uA717-\uA71F\uA770\uA788\uA7F8\uA7F9\uA9CF\uAA70\uAADD\uAAF3\uAAF4\uFF70\uFF9E\uFF9F',
            astral: '\uD81B[\uDF93-\uDF9F]'
        },
        {
            name: 'Lo',
            alias: 'Other_Letter',
            bmp: '\xAA\xBA\u01BB\u01C0-\u01C3\u0294\u05D0-\u05EA\u05F0-\u05F2\u0620-\u063F\u0641-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u0800-\u0815\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0972-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E45\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10D0-\u10FA\u10FD-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17DC\u1820-\u1842\u1844-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C77\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u2135-\u2138\u2D30-\u2D67\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u3006\u303C\u3041-\u3096\u309F\u30A1-\u30FA\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA014\uA016-\uA48C\uA4D0-\uA4F7\uA500-\uA60B\uA610-\uA61F\uA62A\uA62B\uA66E\uA6A0-\uA6E5\uA7FB-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA6F\uAA71-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB\uAADC\uAAE0-\uAAEA\uAAF2\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF66-\uFF6F\uFF71-\uFF9D\uFFA0-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC',
            astral: '\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE60-\uDE7C\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1E\uDF30-\uDF40\uDF42-\uDF49\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF]|\uD81A[\uDC00-\uDE38]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD83-\uDDB2\uDDC1-\uDDC4]|\uD86E[\uDC00-\uDC1D]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD803[\uDC00-\uDC48]|\uD80D[\uDC00-\uDC2E]|\uD805[\uDE80-\uDEAA]|\uD87E[\uDC00-\uDE1D]|\uD81B[\uDF00-\uDF44\uDF50]|\uD801[\uDC50-\uDC9D]|\uD82C[\uDC00\uDC01]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD808[\uDC00-\uDF6E]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]'
        },
        {
            name: 'Lt',
            alias: 'Titlecase_Letter',
            bmp: '\u01C5\u01C8\u01CB\u01F2\u1F88-\u1F8F\u1F98-\u1F9F\u1FA8-\u1FAF\u1FBC\u1FCC\u1FFC'
        },
        {
            name: 'Lu',
            alias: 'Uppercase_Letter',
            bmp: 'A-Z\xC0-\xD6\xD8-\xDE\u0100\u0102\u0104\u0106\u0108\u010A\u010C\u010E\u0110\u0112\u0114\u0116\u0118\u011A\u011C\u011E\u0120\u0122\u0124\u0126\u0128\u012A\u012C\u012E\u0130\u0132\u0134\u0136\u0139\u013B\u013D\u013F\u0141\u0143\u0145\u0147\u014A\u014C\u014E\u0150\u0152\u0154\u0156\u0158\u015A\u015C\u015E\u0160\u0162\u0164\u0166\u0168\u016A\u016C\u016E\u0170\u0172\u0174\u0176\u0178\u0179\u017B\u017D\u0181\u0182\u0184\u0186\u0187\u0189-\u018B\u018E-\u0191\u0193\u0194\u0196-\u0198\u019C\u019D\u019F\u01A0\u01A2\u01A4\u01A6\u01A7\u01A9\u01AC\u01AE\u01AF\u01B1-\u01B3\u01B5\u01B7\u01B8\u01BC\u01C4\u01C7\u01CA\u01CD\u01CF\u01D1\u01D3\u01D5\u01D7\u01D9\u01DB\u01DE\u01E0\u01E2\u01E4\u01E6\u01E8\u01EA\u01EC\u01EE\u01F1\u01F4\u01F6-\u01F8\u01FA\u01FC\u01FE\u0200\u0202\u0204\u0206\u0208\u020A\u020C\u020E\u0210\u0212\u0214\u0216\u0218\u021A\u021C\u021E\u0220\u0222\u0224\u0226\u0228\u022A\u022C\u022E\u0230\u0232\u023A\u023B\u023D\u023E\u0241\u0243-\u0246\u0248\u024A\u024C\u024E\u0370\u0372\u0376\u0386\u0388-\u038A\u038C\u038E\u038F\u0391-\u03A1\u03A3-\u03AB\u03CF\u03D2-\u03D4\u03D8\u03DA\u03DC\u03DE\u03E0\u03E2\u03E4\u03E6\u03E8\u03EA\u03EC\u03EE\u03F4\u03F7\u03F9\u03FA\u03FD-\u042F\u0460\u0462\u0464\u0466\u0468\u046A\u046C\u046E\u0470\u0472\u0474\u0476\u0478\u047A\u047C\u047E\u0480\u048A\u048C\u048E\u0490\u0492\u0494\u0496\u0498\u049A\u049C\u049E\u04A0\u04A2\u04A4\u04A6\u04A8\u04AA\u04AC\u04AE\u04B0\u04B2\u04B4\u04B6\u04B8\u04BA\u04BC\u04BE\u04C0\u04C1\u04C3\u04C5\u04C7\u04C9\u04CB\u04CD\u04D0\u04D2\u04D4\u04D6\u04D8\u04DA\u04DC\u04DE\u04E0\u04E2\u04E4\u04E6\u04E8\u04EA\u04EC\u04EE\u04F0\u04F2\u04F4\u04F6\u04F8\u04FA\u04FC\u04FE\u0500\u0502\u0504\u0506\u0508\u050A\u050C\u050E\u0510\u0512\u0514\u0516\u0518\u051A\u051C\u051E\u0520\u0522\u0524\u0526\u0531-\u0556\u10A0-\u10C5\u10C7\u10CD\u1E00\u1E02\u1E04\u1E06\u1E08\u1E0A\u1E0C\u1E0E\u1E10\u1E12\u1E14\u1E16\u1E18\u1E1A\u1E1C\u1E1E\u1E20\u1E22\u1E24\u1E26\u1E28\u1E2A\u1E2C\u1E2E\u1E30\u1E32\u1E34\u1E36\u1E38\u1E3A\u1E3C\u1E3E\u1E40\u1E42\u1E44\u1E46\u1E48\u1E4A\u1E4C\u1E4E\u1E50\u1E52\u1E54\u1E56\u1E58\u1E5A\u1E5C\u1E5E\u1E60\u1E62\u1E64\u1E66\u1E68\u1E6A\u1E6C\u1E6E\u1E70\u1E72\u1E74\u1E76\u1E78\u1E7A\u1E7C\u1E7E\u1E80\u1E82\u1E84\u1E86\u1E88\u1E8A\u1E8C\u1E8E\u1E90\u1E92\u1E94\u1E9E\u1EA0\u1EA2\u1EA4\u1EA6\u1EA8\u1EAA\u1EAC\u1EAE\u1EB0\u1EB2\u1EB4\u1EB6\u1EB8\u1EBA\u1EBC\u1EBE\u1EC0\u1EC2\u1EC4\u1EC6\u1EC8\u1ECA\u1ECC\u1ECE\u1ED0\u1ED2\u1ED4\u1ED6\u1ED8\u1EDA\u1EDC\u1EDE\u1EE0\u1EE2\u1EE4\u1EE6\u1EE8\u1EEA\u1EEC\u1EEE\u1EF0\u1EF2\u1EF4\u1EF6\u1EF8\u1EFA\u1EFC\u1EFE\u1F08-\u1F0F\u1F18-\u1F1D\u1F28-\u1F2F\u1F38-\u1F3F\u1F48-\u1F4D\u1F59\u1F5B\u1F5D\u1F5F\u1F68-\u1F6F\u1FB8-\u1FBB\u1FC8-\u1FCB\u1FD8-\u1FDB\u1FE8-\u1FEC\u1FF8-\u1FFB\u2102\u2107\u210B-\u210D\u2110-\u2112\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u2130-\u2133\u213E\u213F\u2145\u2183\u2C00-\u2C2E\u2C60\u2C62-\u2C64\u2C67\u2C69\u2C6B\u2C6D-\u2C70\u2C72\u2C75\u2C7E-\u2C80\u2C82\u2C84\u2C86\u2C88\u2C8A\u2C8C\u2C8E\u2C90\u2C92\u2C94\u2C96\u2C98\u2C9A\u2C9C\u2C9E\u2CA0\u2CA2\u2CA4\u2CA6\u2CA8\u2CAA\u2CAC\u2CAE\u2CB0\u2CB2\u2CB4\u2CB6\u2CB8\u2CBA\u2CBC\u2CBE\u2CC0\u2CC2\u2CC4\u2CC6\u2CC8\u2CCA\u2CCC\u2CCE\u2CD0\u2CD2\u2CD4\u2CD6\u2CD8\u2CDA\u2CDC\u2CDE\u2CE0\u2CE2\u2CEB\u2CED\u2CF2\uA640\uA642\uA644\uA646\uA648\uA64A\uA64C\uA64E\uA650\uA652\uA654\uA656\uA658\uA65A\uA65C\uA65E\uA660\uA662\uA664\uA666\uA668\uA66A\uA66C\uA680\uA682\uA684\uA686\uA688\uA68A\uA68C\uA68E\uA690\uA692\uA694\uA696\uA722\uA724\uA726\uA728\uA72A\uA72C\uA72E\uA732\uA734\uA736\uA738\uA73A\uA73C\uA73E\uA740\uA742\uA744\uA746\uA748\uA74A\uA74C\uA74E\uA750\uA752\uA754\uA756\uA758\uA75A\uA75C\uA75E\uA760\uA762\uA764\uA766\uA768\uA76A\uA76C\uA76E\uA779\uA77B\uA77D\uA77E\uA780\uA782\uA784\uA786\uA78B\uA78D\uA790\uA792\uA7A0\uA7A2\uA7A4\uA7A6\uA7A8\uA7AA\uFF21-\uFF3A',
            astral: '\uD835[\uDC00-\uDC19\uDC34-\uDC4D\uDC68-\uDC81\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB5\uDCD0-\uDCE9\uDD04\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD38\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD6C-\uDD85\uDDA0-\uDDB9\uDDD4-\uDDED\uDE08-\uDE21\uDE3C-\uDE55\uDE70-\uDE89\uDEA8-\uDEC0\uDEE2-\uDEFA\uDF1C-\uDF34\uDF56-\uDF6E\uDF90-\uDFA8\uDFCA]|\uD801[\uDC00-\uDC27]'
        },
        {
            name: 'M',
            alias: 'Mark',
            bmp: '\u0300-\u036F\u0483-\u0489\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7\u06E8\u06EA-\u06ED\u0711\u0730-\u074A\u07A6-\u07B0\u07EB-\u07F3\u0816-\u0819\u081B-\u0823\u0825-\u0827\u0829-\u082D\u0859-\u085B\u08E4-\u08FE\u0900-\u0903\u093A-\u093C\u093E-\u094F\u0951-\u0957\u0962\u0963\u0981-\u0983\u09BC\u09BE-\u09C4\u09C7\u09C8\u09CB-\u09CD\u09D7\u09E2\u09E3\u0A01-\u0A03\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A70\u0A71\u0A75\u0A81-\u0A83\u0ABC\u0ABE-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AE2\u0AE3\u0B01-\u0B03\u0B3C\u0B3E-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B62\u0B63\u0B82\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD7\u0C01-\u0C03\u0C3E-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C62\u0C63\u0C82\u0C83\u0CBC\u0CBE-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CE2\u0CE3\u0D02\u0D03\u0D3E-\u0D44\u0D46-\u0D48\u0D4A-\u0D4D\u0D57\u0D62\u0D63\u0D82\u0D83\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2\u0DF3\u0E31\u0E34-\u0E3A\u0E47-\u0E4E\u0EB1\u0EB4-\u0EB9\u0EBB\u0EBC\u0EC8-\u0ECD\u0F18\u0F19\u0F35\u0F37\u0F39\u0F3E\u0F3F\u0F71-\u0F84\u0F86\u0F87\u0F8D-\u0F97\u0F99-\u0FBC\u0FC6\u102B-\u103E\u1056-\u1059\u105E-\u1060\u1062-\u1064\u1067-\u106D\u1071-\u1074\u1082-\u108D\u108F\u109A-\u109D\u135D-\u135F\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17B4-\u17D3\u17DD\u180B-\u180D\u18A9\u1920-\u192B\u1930-\u193B\u19B0-\u19C0\u19C8\u19C9\u1A17-\u1A1B\u1A55-\u1A5E\u1A60-\u1A7C\u1A7F\u1B00-\u1B04\u1B34-\u1B44\u1B6B-\u1B73\u1B80-\u1B82\u1BA1-\u1BAD\u1BE6-\u1BF3\u1C24-\u1C37\u1CD0-\u1CD2\u1CD4-\u1CE8\u1CED\u1CF2-\u1CF4\u1DC0-\u1DE6\u1DFC-\u1DFF\u20D0-\u20F0\u2CEF-\u2CF1\u2D7F\u2DE0-\u2DFF\u302A-\u302F\u3099\u309A\uA66F-\uA672\uA674-\uA67D\uA69F\uA6F0\uA6F1\uA802\uA806\uA80B\uA823-\uA827\uA880\uA881\uA8B4-\uA8C4\uA8E0-\uA8F1\uA926-\uA92D\uA947-\uA953\uA980-\uA983\uA9B3-\uA9C0\uAA29-\uAA36\uAA43\uAA4C\uAA4D\uAA7B\uAAB0\uAAB2-\uAAB4\uAAB7\uAAB8\uAABE\uAABF\uAAC1\uAAEB-\uAAEF\uAAF5\uAAF6\uABE3-\uABEA\uABEC\uABED\uFB1E\uFE00-\uFE0F\uFE20-\uFE26',
            astral: '\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD802[\uDE01-\uDE03\uDE05\uDE06\uDE0C-\uDE0F\uDE38-\uDE3A\uDE3F]|\uD81B[\uDF51-\uDF7E\uDF8F-\uDF92]|\uD804[\uDC00-\uDC02\uDC38-\uDC46\uDC80-\uDC82\uDCB0-\uDCBA\uDD00-\uDD02\uDD27-\uDD34\uDD80-\uDD82\uDDB3-\uDDC0]|\uD805[\uDEAB-\uDEB7]|\uD800\uDDFD|\uDB40[\uDD00-\uDDEF]'
        },
        {
            name: 'Mc',
            alias: 'Spacing_Mark',
            bmp: '\u0903\u093B\u093E-\u0940\u0949-\u094C\u094E\u094F\u0982\u0983\u09BE-\u09C0\u09C7\u09C8\u09CB\u09CC\u09D7\u0A03\u0A3E-\u0A40\u0A83\u0ABE-\u0AC0\u0AC9\u0ACB\u0ACC\u0B02\u0B03\u0B3E\u0B40\u0B47\u0B48\u0B4B\u0B4C\u0B57\u0BBE\u0BBF\u0BC1\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCC\u0BD7\u0C01-\u0C03\u0C41-\u0C44\u0C82\u0C83\u0CBE\u0CC0-\u0CC4\u0CC7\u0CC8\u0CCA\u0CCB\u0CD5\u0CD6\u0D02\u0D03\u0D3E-\u0D40\u0D46-\u0D48\u0D4A-\u0D4C\u0D57\u0D82\u0D83\u0DCF-\u0DD1\u0DD8-\u0DDF\u0DF2\u0DF3\u0F3E\u0F3F\u0F7F\u102B\u102C\u1031\u1038\u103B\u103C\u1056\u1057\u1062-\u1064\u1067-\u106D\u1083\u1084\u1087-\u108C\u108F\u109A-\u109C\u17B6\u17BE-\u17C5\u17C7\u17C8\u1923-\u1926\u1929-\u192B\u1930\u1931\u1933-\u1938\u19B0-\u19C0\u19C8\u19C9\u1A19-\u1A1B\u1A55\u1A57\u1A61\u1A63\u1A64\u1A6D-\u1A72\u1B04\u1B35\u1B3B\u1B3D-\u1B41\u1B43\u1B44\u1B82\u1BA1\u1BA6\u1BA7\u1BAA\u1BAC\u1BAD\u1BE7\u1BEA-\u1BEC\u1BEE\u1BF2\u1BF3\u1C24-\u1C2B\u1C34\u1C35\u1CE1\u1CF2\u1CF3\u302E\u302F\uA823\uA824\uA827\uA880\uA881\uA8B4-\uA8C3\uA952\uA953\uA983\uA9B4\uA9B5\uA9BA\uA9BB\uA9BD-\uA9C0\uAA2F\uAA30\uAA33\uAA34\uAA4D\uAA7B\uAAEB\uAAEE\uAAEF\uAAF5\uABE3\uABE4\uABE6\uABE7\uABE9\uABEA\uABEC',
            astral: '\uD834[\uDD65\uDD66\uDD6D-\uDD72]|\uD804[\uDC00\uDC02\uDC82\uDCB0-\uDCB2\uDCB7\uDCB8\uDD2C\uDD82\uDDB3-\uDDB5\uDDBF\uDDC0]|\uD805[\uDEAC\uDEAE\uDEAF\uDEB6]|\uD81B[\uDF51-\uDF7E]'
        },
        {
            name: 'Me',
            alias: 'Enclosing_Mark',
            bmp: '\u0488\u0489\u20DD-\u20E0\u20E2-\u20E4\uA670-\uA672'
        },
        {
            name: 'Mn',
            alias: 'Nonspacing_Mark',
            bmp: '\u0300-\u036F\u0483-\u0487\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7\u06E8\u06EA-\u06ED\u0711\u0730-\u074A\u07A6-\u07B0\u07EB-\u07F3\u0816-\u0819\u081B-\u0823\u0825-\u0827\u0829-\u082D\u0859-\u085B\u08E4-\u08FE\u0900-\u0902\u093A\u093C\u0941-\u0948\u094D\u0951-\u0957\u0962\u0963\u0981\u09BC\u09C1-\u09C4\u09CD\u09E2\u09E3\u0A01\u0A02\u0A3C\u0A41\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A70\u0A71\u0A75\u0A81\u0A82\u0ABC\u0AC1-\u0AC5\u0AC7\u0AC8\u0ACD\u0AE2\u0AE3\u0B01\u0B3C\u0B3F\u0B41-\u0B44\u0B4D\u0B56\u0B62\u0B63\u0B82\u0BC0\u0BCD\u0C3E-\u0C40\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C62\u0C63\u0CBC\u0CBF\u0CC6\u0CCC\u0CCD\u0CE2\u0CE3\u0D41-\u0D44\u0D4D\u0D62\u0D63\u0DCA\u0DD2-\u0DD4\u0DD6\u0E31\u0E34-\u0E3A\u0E47-\u0E4E\u0EB1\u0EB4-\u0EB9\u0EBB\u0EBC\u0EC8-\u0ECD\u0F18\u0F19\u0F35\u0F37\u0F39\u0F71-\u0F7E\u0F80-\u0F84\u0F86\u0F87\u0F8D-\u0F97\u0F99-\u0FBC\u0FC6\u102D-\u1030\u1032-\u1037\u1039\u103A\u103D\u103E\u1058\u1059\u105E-\u1060\u1071-\u1074\u1082\u1085\u1086\u108D\u109D\u135D-\u135F\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17B4\u17B5\u17B7-\u17BD\u17C6\u17C9-\u17D3\u17DD\u180B-\u180D\u18A9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193B\u1A17\u1A18\u1A56\u1A58-\u1A5E\u1A60\u1A62\u1A65-\u1A6C\u1A73-\u1A7C\u1A7F\u1B00-\u1B03\u1B34\u1B36-\u1B3A\u1B3C\u1B42\u1B6B-\u1B73\u1B80\u1B81\u1BA2-\u1BA5\u1BA8\u1BA9\u1BAB\u1BE6\u1BE8\u1BE9\u1BED\u1BEF-\u1BF1\u1C2C-\u1C33\u1C36\u1C37\u1CD0-\u1CD2\u1CD4-\u1CE0\u1CE2-\u1CE8\u1CED\u1CF4\u1DC0-\u1DE6\u1DFC-\u1DFF\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2CEF-\u2CF1\u2D7F\u2DE0-\u2DFF\u302A-\u302D\u3099\u309A\uA66F\uA674-\uA67D\uA69F\uA6F0\uA6F1\uA802\uA806\uA80B\uA825\uA826\uA8C4\uA8E0-\uA8F1\uA926-\uA92D\uA947-\uA951\uA980-\uA982\uA9B3\uA9B6-\uA9B9\uA9BC\uAA29-\uAA2E\uAA31\uAA32\uAA35\uAA36\uAA43\uAA4C\uAAB0\uAAB2-\uAAB4\uAAB7\uAAB8\uAABE\uAABF\uAAC1\uAAEC\uAAED\uAAF6\uABE5\uABE8\uABED\uFB1E\uFE00-\uFE0F\uFE20-\uFE26',
            astral: '\uD802[\uDE01-\uDE03\uDE05\uDE06\uDE0C-\uDE0F\uDE38-\uDE3A\uDE3F]|\uD834[\uDD67-\uDD69\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD81B[\uDF8F-\uDF92]|\uD805[\uDEAB\uDEAD\uDEB0-\uDEB5\uDEB7]|\uD804[\uDC01\uDC38-\uDC46\uDC80\uDC81\uDCB3-\uDCB6\uDCB9\uDCBA\uDD00-\uDD02\uDD27-\uDD2B\uDD2D-\uDD34\uDD80\uDD81\uDDB6-\uDDBE]|\uD800\uDDFD|\uDB40[\uDD00-\uDDEF]'
        },
        {
            name: 'N',
            alias: 'Number',
            bmp: '0-9\xB2\xB3\xB9\xBC-\xBE\u0660-\u0669\u06F0-\u06F9\u07C0-\u07C9\u0966-\u096F\u09E6-\u09EF\u09F4-\u09F9\u0A66-\u0A6F\u0AE6-\u0AEF\u0B66-\u0B6F\u0B72-\u0B77\u0BE6-\u0BF2\u0C66-\u0C6F\u0C78-\u0C7E\u0CE6-\u0CEF\u0D66-\u0D75\u0E50-\u0E59\u0ED0-\u0ED9\u0F20-\u0F33\u1040-\u1049\u1090-\u1099\u1369-\u137C\u16EE-\u16F0\u17E0-\u17E9\u17F0-\u17F9\u1810-\u1819\u1946-\u194F\u19D0-\u19DA\u1A80-\u1A89\u1A90-\u1A99\u1B50-\u1B59\u1BB0-\u1BB9\u1C40-\u1C49\u1C50-\u1C59\u2070\u2074-\u2079\u2080-\u2089\u2150-\u2182\u2185-\u2189\u2460-\u249B\u24EA-\u24FF\u2776-\u2793\u2CFD\u3007\u3021-\u3029\u3038-\u303A\u3192-\u3195\u3220-\u3229\u3248-\u324F\u3251-\u325F\u3280-\u3289\u32B1-\u32BF\uA620-\uA629\uA6E6-\uA6EF\uA830-\uA835\uA8D0-\uA8D9\uA900-\uA909\uA9D0-\uA9D9\uAA50-\uAA59\uABF0-\uABF9\uFF10-\uFF19',
            astral: '\uD802[\uDC58-\uDC5F\uDD16-\uDD1B\uDE40-\uDE47\uDE7D\uDE7E\uDF58-\uDF5F\uDF78-\uDF7F]|\uD801[\uDCA0-\uDCA9]|\uD809[\uDC00-\uDC62]|\uD835[\uDFCE-\uDFFF]|\uD800[\uDD07-\uDD33\uDD40-\uDD78\uDD8A\uDF20-\uDF23\uDF41\uDF4A\uDFD1-\uDFD5]|\uD834[\uDF60-\uDF71]|\uD803[\uDE60-\uDE7E]|\uD83C[\uDD00-\uDD0A]|\uD805[\uDEC0-\uDEC9]|\uD804[\uDC52-\uDC6F\uDCF0-\uDCF9\uDD36-\uDD3F\uDDD0-\uDDD9]'
        },
        {
            name: 'Nd',
            alias: 'Decimal_Number',
            bmp: '0-9\u0660-\u0669\u06F0-\u06F9\u07C0-\u07C9\u0966-\u096F\u09E6-\u09EF\u0A66-\u0A6F\u0AE6-\u0AEF\u0B66-\u0B6F\u0BE6-\u0BEF\u0C66-\u0C6F\u0CE6-\u0CEF\u0D66-\u0D6F\u0E50-\u0E59\u0ED0-\u0ED9\u0F20-\u0F29\u1040-\u1049\u1090-\u1099\u17E0-\u17E9\u1810-\u1819\u1946-\u194F\u19D0-\u19D9\u1A80-\u1A89\u1A90-\u1A99\u1B50-\u1B59\u1BB0-\u1BB9\u1C40-\u1C49\u1C50-\u1C59\uA620-\uA629\uA8D0-\uA8D9\uA900-\uA909\uA9D0-\uA9D9\uAA50-\uAA59\uABF0-\uABF9\uFF10-\uFF19',
            astral: '\uD804[\uDC66-\uDC6F\uDCF0-\uDCF9\uDD36-\uDD3F\uDDD0-\uDDD9]|\uD805[\uDEC0-\uDEC9]|\uD801[\uDCA0-\uDCA9]|\uD835[\uDFCE-\uDFFF]'
        },
        {
            name: 'Nl',
            alias: 'Letter_Number',
            bmp: '\u16EE-\u16F0\u2160-\u2182\u2185-\u2188\u3007\u3021-\u3029\u3038-\u303A\uA6E6-\uA6EF',
            astral: '\uD800[\uDD40-\uDD74\uDF41\uDF4A\uDFD1-\uDFD5]|\uD809[\uDC00-\uDC62]'
        },
        {
            name: 'No',
            alias: 'Other_Number',
            bmp: '\xB2\xB3\xB9\xBC-\xBE\u09F4-\u09F9\u0B72-\u0B77\u0BF0-\u0BF2\u0C78-\u0C7E\u0D70-\u0D75\u0F2A-\u0F33\u1369-\u137C\u17F0-\u17F9\u19DA\u2070\u2074-\u2079\u2080-\u2089\u2150-\u215F\u2189\u2460-\u249B\u24EA-\u24FF\u2776-\u2793\u2CFD\u3192-\u3195\u3220-\u3229\u3248-\u324F\u3251-\u325F\u3280-\u3289\u32B1-\u32BF\uA830-\uA835',
            astral: '\uD802[\uDC58-\uDC5F\uDD16-\uDD1B\uDE40-\uDE47\uDE7D\uDE7E\uDF58-\uDF5F\uDF78-\uDF7F]|\uD834[\uDF60-\uDF71]|\uD803[\uDE60-\uDE7E]|\uD800[\uDD07-\uDD33\uDD75-\uDD78\uDD8A\uDF20-\uDF23]|\uD83C[\uDD00-\uDD0A]|\uD804[\uDC52-\uDC65]'
        },
        {
            name: 'P',
            alias: 'Punctuation',
            bmp: '\x21-\x23\x25-\\x2A\x2C-\x2F\x3A\x3B\\x3F\x40\\x5B-\\x5D\x5F\\x7B\x7D\xA1\xA7\xAB\xB6\xB7\xBB\xBF\u037E\u0387\u055A-\u055F\u0589\u058A\u05BE\u05C0\u05C3\u05C6\u05F3\u05F4\u0609\u060A\u060C\u060D\u061B\u061E\u061F\u066A-\u066D\u06D4\u0700-\u070D\u07F7-\u07F9\u0830-\u083E\u085E\u0964\u0965\u0970\u0AF0\u0DF4\u0E4F\u0E5A\u0E5B\u0F04-\u0F12\u0F14\u0F3A-\u0F3D\u0F85\u0FD0-\u0FD4\u0FD9\u0FDA\u104A-\u104F\u10FB\u1360-\u1368\u1400\u166D\u166E\u169B\u169C\u16EB-\u16ED\u1735\u1736\u17D4-\u17D6\u17D8-\u17DA\u1800-\u180A\u1944\u1945\u1A1E\u1A1F\u1AA0-\u1AA6\u1AA8-\u1AAD\u1B5A-\u1B60\u1BFC-\u1BFF\u1C3B-\u1C3F\u1C7E\u1C7F\u1CC0-\u1CC7\u1CD3\u2010-\u2027\u2030-\u2043\u2045-\u2051\u2053-\u205E\u207D\u207E\u208D\u208E\u2329\u232A\u2768-\u2775\u27C5\u27C6\u27E6-\u27EF\u2983-\u2998\u29D8-\u29DB\u29FC\u29FD\u2CF9-\u2CFC\u2CFE\u2CFF\u2D70\u2E00-\u2E2E\u2E30-\u2E3B\u3001-\u3003\u3008-\u3011\u3014-\u301F\u3030\u303D\u30A0\u30FB\uA4FE\uA4FF\uA60D-\uA60F\uA673\uA67E\uA6F2-\uA6F7\uA874-\uA877\uA8CE\uA8CF\uA8F8-\uA8FA\uA92E\uA92F\uA95F\uA9C1-\uA9CD\uA9DE\uA9DF\uAA5C-\uAA5F\uAADE\uAADF\uAAF0\uAAF1\uABEB\uFD3E\uFD3F\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE61\uFE63\uFE68\uFE6A\uFE6B\uFF01-\uFF03\uFF05-\uFF0A\uFF0C-\uFF0F\uFF1A\uFF1B\uFF1F\uFF20\uFF3B-\uFF3D\uFF3F\uFF5B\uFF5D\uFF5F-\uFF65',
            astral: '\uD809[\uDC70-\uDC73]|\uD802[\uDC57\uDD1F\uDD3F\uDE50-\uDE58\uDE7F\uDF39-\uDF3F]|\uD800[\uDD00-\uDD02\uDF9F\uDFD0]|\uD804[\uDC47-\uDC4D\uDCBB\uDCBC\uDCBE-\uDCC1\uDD40-\uDD43\uDDC5-\uDDC8]'
        },
        {
            name: 'Pc',
            alias: 'Connector_Punctuation',
            bmp: '\x5F\u203F\u2040\u2054\uFE33\uFE34\uFE4D-\uFE4F\uFF3F'
        },
        {
            name: 'Pd',
            alias: 'Dash_Punctuation',
            bmp: '\\x2D\u058A\u05BE\u1400\u1806\u2010-\u2015\u2E17\u2E1A\u2E3A\u2E3B\u301C\u3030\u30A0\uFE31\uFE32\uFE58\uFE63\uFF0D'
        },
        {
            name: 'Pe',
            alias: 'Close_Punctuation',
            bmp: '\\x29\\x5D\x7D\u0F3B\u0F3D\u169C\u2046\u207E\u208E\u232A\u2769\u276B\u276D\u276F\u2771\u2773\u2775\u27C6\u27E7\u27E9\u27EB\u27ED\u27EF\u2984\u2986\u2988\u298A\u298C\u298E\u2990\u2992\u2994\u2996\u2998\u29D9\u29DB\u29FD\u2E23\u2E25\u2E27\u2E29\u3009\u300B\u300D\u300F\u3011\u3015\u3017\u3019\u301B\u301E\u301F\uFD3F\uFE18\uFE36\uFE38\uFE3A\uFE3C\uFE3E\uFE40\uFE42\uFE44\uFE48\uFE5A\uFE5C\uFE5E\uFF09\uFF3D\uFF5D\uFF60\uFF63'
        },
        {
            name: 'Pf',
            alias: 'Final_Punctuation',
            bmp: '\xBB\u2019\u201D\u203A\u2E03\u2E05\u2E0A\u2E0D\u2E1D\u2E21'
        },
        {
            name: 'Pi',
            alias: 'Initial_Punctuation',
            bmp: '\xAB\u2018\u201B\u201C\u201F\u2039\u2E02\u2E04\u2E09\u2E0C\u2E1C\u2E20'
        },
        {
            name: 'Po',
            alias: 'Other_Punctuation',
            bmp: '\x21-\x23\x25-\x27\\x2A\x2C\\x2E\x2F\x3A\x3B\\x3F\x40\\x5C\xA1\xA7\xB6\xB7\xBF\u037E\u0387\u055A-\u055F\u0589\u05C0\u05C3\u05C6\u05F3\u05F4\u0609\u060A\u060C\u060D\u061B\u061E\u061F\u066A-\u066D\u06D4\u0700-\u070D\u07F7-\u07F9\u0830-\u083E\u085E\u0964\u0965\u0970\u0AF0\u0DF4\u0E4F\u0E5A\u0E5B\u0F04-\u0F12\u0F14\u0F85\u0FD0-\u0FD4\u0FD9\u0FDA\u104A-\u104F\u10FB\u1360-\u1368\u166D\u166E\u16EB-\u16ED\u1735\u1736\u17D4-\u17D6\u17D8-\u17DA\u1800-\u1805\u1807-\u180A\u1944\u1945\u1A1E\u1A1F\u1AA0-\u1AA6\u1AA8-\u1AAD\u1B5A-\u1B60\u1BFC-\u1BFF\u1C3B-\u1C3F\u1C7E\u1C7F\u1CC0-\u1CC7\u1CD3\u2016\u2017\u2020-\u2027\u2030-\u2038\u203B-\u203E\u2041-\u2043\u2047-\u2051\u2053\u2055-\u205E\u2CF9-\u2CFC\u2CFE\u2CFF\u2D70\u2E00\u2E01\u2E06-\u2E08\u2E0B\u2E0E-\u2E16\u2E18\u2E19\u2E1B\u2E1E\u2E1F\u2E2A-\u2E2E\u2E30-\u2E39\u3001-\u3003\u303D\u30FB\uA4FE\uA4FF\uA60D-\uA60F\uA673\uA67E\uA6F2-\uA6F7\uA874-\uA877\uA8CE\uA8CF\uA8F8-\uA8FA\uA92E\uA92F\uA95F\uA9C1-\uA9CD\uA9DE\uA9DF\uAA5C-\uAA5F\uAADE\uAADF\uAAF0\uAAF1\uABEB\uFE10-\uFE16\uFE19\uFE30\uFE45\uFE46\uFE49-\uFE4C\uFE50-\uFE52\uFE54-\uFE57\uFE5F-\uFE61\uFE68\uFE6A\uFE6B\uFF01-\uFF03\uFF05-\uFF07\uFF0A\uFF0C\uFF0E\uFF0F\uFF1A\uFF1B\uFF1F\uFF20\uFF3C\uFF61\uFF64\uFF65',
            astral: '\uD809[\uDC70-\uDC73]|\uD802[\uDC57\uDD1F\uDD3F\uDE50-\uDE58\uDE7F\uDF39-\uDF3F]|\uD800[\uDD00-\uDD02\uDF9F\uDFD0]|\uD804[\uDC47-\uDC4D\uDCBB\uDCBC\uDCBE-\uDCC1\uDD40-\uDD43\uDDC5-\uDDC8]'
        },
        {
            name: 'Ps',
            alias: 'Open_Punctuation',
            bmp: '\\x28\\x5B\\x7B\u0F3A\u0F3C\u169B\u201A\u201E\u2045\u207D\u208D\u2329\u2768\u276A\u276C\u276E\u2770\u2772\u2774\u27C5\u27E6\u27E8\u27EA\u27EC\u27EE\u2983\u2985\u2987\u2989\u298B\u298D\u298F\u2991\u2993\u2995\u2997\u29D8\u29DA\u29FC\u2E22\u2E24\u2E26\u2E28\u3008\u300A\u300C\u300E\u3010\u3014\u3016\u3018\u301A\u301D\uFD3E\uFE17\uFE35\uFE37\uFE39\uFE3B\uFE3D\uFE3F\uFE41\uFE43\uFE47\uFE59\uFE5B\uFE5D\uFF08\uFF3B\uFF5B\uFF5F\uFF62'
        },
        {
            name: 'S',
            alias: 'Symbol',
            bmp: '\\x24\\x2B\x3C-\x3E\\x5E\x60\\x7C\x7E\xA2-\xA6\xA8\xA9\xAC\xAE-\xB1\xB4\xB8\xD7\xF7\u02C2-\u02C5\u02D2-\u02DF\u02E5-\u02EB\u02ED\u02EF-\u02FF\u0375\u0384\u0385\u03F6\u0482\u058F\u0606-\u0608\u060B\u060E\u060F\u06DE\u06E9\u06FD\u06FE\u07F6\u09F2\u09F3\u09FA\u09FB\u0AF1\u0B70\u0BF3-\u0BFA\u0C7F\u0D79\u0E3F\u0F01-\u0F03\u0F13\u0F15-\u0F17\u0F1A-\u0F1F\u0F34\u0F36\u0F38\u0FBE-\u0FC5\u0FC7-\u0FCC\u0FCE\u0FCF\u0FD5-\u0FD8\u109E\u109F\u1390-\u1399\u17DB\u1940\u19DE-\u19FF\u1B61-\u1B6A\u1B74-\u1B7C\u1FBD\u1FBF-\u1FC1\u1FCD-\u1FCF\u1FDD-\u1FDF\u1FED-\u1FEF\u1FFD\u1FFE\u2044\u2052\u207A-\u207C\u208A-\u208C\u20A0-\u20BA\u2100\u2101\u2103-\u2106\u2108\u2109\u2114\u2116-\u2118\u211E-\u2123\u2125\u2127\u2129\u212E\u213A\u213B\u2140-\u2144\u214A-\u214D\u214F\u2190-\u2328\u232B-\u23F3\u2400-\u2426\u2440-\u244A\u249C-\u24E9\u2500-\u26FF\u2701-\u2767\u2794-\u27C4\u27C7-\u27E5\u27F0-\u2982\u2999-\u29D7\u29DC-\u29FB\u29FE-\u2B4C\u2B50-\u2B59\u2CE5-\u2CEA\u2E80-\u2E99\u2E9B-\u2EF3\u2F00-\u2FD5\u2FF0-\u2FFB\u3004\u3012\u3013\u3020\u3036\u3037\u303E\u303F\u309B\u309C\u3190\u3191\u3196-\u319F\u31C0-\u31E3\u3200-\u321E\u322A-\u3247\u3250\u3260-\u327F\u328A-\u32B0\u32C0-\u32FE\u3300-\u33FF\u4DC0-\u4DFF\uA490-\uA4C6\uA700-\uA716\uA720\uA721\uA789\uA78A\uA828-\uA82B\uA836-\uA839\uAA77-\uAA79\uFB29\uFBB2-\uFBC1\uFDFC\uFDFD\uFE62\uFE64-\uFE66\uFE69\uFF04\uFF0B\uFF1C-\uFF1E\uFF3E\uFF40\uFF5C\uFF5E\uFFE0-\uFFE6\uFFE8-\uFFEE\uFFFC\uFFFD',
            astral: '\uD83D[\uDC00-\uDC3E\uDC40\uDC42-\uDCF7\uDCF9-\uDCFC\uDD00-\uDD3D\uDD40-\uDD43\uDD50-\uDD67\uDDFB-\uDE40\uDE45-\uDE4F\uDE80-\uDEC5\uDF00-\uDF73]|\uD835[\uDEC1\uDEDB\uDEFB\uDF15\uDF35\uDF4F\uDF6F\uDF89\uDFA9\uDFC3]|\uD83C[\uDC00-\uDC2B\uDC30-\uDC93\uDCA0-\uDCAE\uDCB1-\uDCBE\uDCC1-\uDCCF\uDCD1-\uDCDF\uDD10-\uDD2E\uDD30-\uDD6B\uDD70-\uDD9A\uDDE6-\uDE02\uDE10-\uDE3A\uDE40-\uDE48\uDE50\uDE51\uDF00-\uDF20\uDF30-\uDF35\uDF37-\uDF7C\uDF80-\uDF93\uDFA0-\uDFC4\uDFC6-\uDFCA\uDFE0-\uDFF0]|\uD834[\uDC00-\uDCF5\uDD00-\uDD26\uDD29-\uDD64\uDD6A-\uDD6C\uDD83\uDD84\uDD8C-\uDDA9\uDDAE-\uDDDD\uDE00-\uDE41\uDE45\uDF00-\uDF56]|\uD800[\uDD37-\uDD3F\uDD79-\uDD89\uDD90-\uDD9B\uDDD0-\uDDFC]|\uD83B[\uDEF0\uDEF1]'
        },
        {
            name: 'Sc',
            alias: 'Currency_Symbol',
            bmp: '\\x24\xA2-\xA5\u058F\u060B\u09F2\u09F3\u09FB\u0AF1\u0BF9\u0E3F\u17DB\u20A0-\u20BA\uA838\uFDFC\uFE69\uFF04\uFFE0\uFFE1\uFFE5\uFFE6'
        },
        {
            name: 'Sk',
            alias: 'Modifier_Symbol',
            bmp: '\\x5E\x60\xA8\xAF\xB4\xB8\u02C2-\u02C5\u02D2-\u02DF\u02E5-\u02EB\u02ED\u02EF-\u02FF\u0375\u0384\u0385\u1FBD\u1FBF-\u1FC1\u1FCD-\u1FCF\u1FDD-\u1FDF\u1FED-\u1FEF\u1FFD\u1FFE\u309B\u309C\uA700-\uA716\uA720\uA721\uA789\uA78A\uFBB2-\uFBC1\uFF3E\uFF40\uFFE3'
        },
        {
            name: 'Sm',
            alias: 'Math_Symbol',
            bmp: '\\x2B\x3C-\x3E\\x7C\x7E\xAC\xB1\xD7\xF7\u03F6\u0606-\u0608\u2044\u2052\u207A-\u207C\u208A-\u208C\u2118\u2140-\u2144\u214B\u2190-\u2194\u219A\u219B\u21A0\u21A3\u21A6\u21AE\u21CE\u21CF\u21D2\u21D4\u21F4-\u22FF\u2308-\u230B\u2320\u2321\u237C\u239B-\u23B3\u23DC-\u23E1\u25B7\u25C1\u25F8-\u25FF\u266F\u27C0-\u27C4\u27C7-\u27E5\u27F0-\u27FF\u2900-\u2982\u2999-\u29D7\u29DC-\u29FB\u29FE-\u2AFF\u2B30-\u2B44\u2B47-\u2B4C\uFB29\uFE62\uFE64-\uFE66\uFF0B\uFF1C-\uFF1E\uFF5C\uFF5E\uFFE2\uFFE9-\uFFEC',
            astral: '\uD83B[\uDEF0\uDEF1]|\uD835[\uDEC1\uDEDB\uDEFB\uDF15\uDF35\uDF4F\uDF6F\uDF89\uDFA9\uDFC3]'
        },
        {
            name: 'So',
            alias: 'Other_Symbol',
            bmp: '\xA6\xA9\xAE\xB0\u0482\u060E\u060F\u06DE\u06E9\u06FD\u06FE\u07F6\u09FA\u0B70\u0BF3-\u0BF8\u0BFA\u0C7F\u0D79\u0F01-\u0F03\u0F13\u0F15-\u0F17\u0F1A-\u0F1F\u0F34\u0F36\u0F38\u0FBE-\u0FC5\u0FC7-\u0FCC\u0FCE\u0FCF\u0FD5-\u0FD8\u109E\u109F\u1390-\u1399\u1940\u19DE-\u19FF\u1B61-\u1B6A\u1B74-\u1B7C\u2100\u2101\u2103-\u2106\u2108\u2109\u2114\u2116\u2117\u211E-\u2123\u2125\u2127\u2129\u212E\u213A\u213B\u214A\u214C\u214D\u214F\u2195-\u2199\u219C-\u219F\u21A1\u21A2\u21A4\u21A5\u21A7-\u21AD\u21AF-\u21CD\u21D0\u21D1\u21D3\u21D5-\u21F3\u2300-\u2307\u230C-\u231F\u2322-\u2328\u232B-\u237B\u237D-\u239A\u23B4-\u23DB\u23E2-\u23F3\u2400-\u2426\u2440-\u244A\u249C-\u24E9\u2500-\u25B6\u25B8-\u25C0\u25C2-\u25F7\u2600-\u266E\u2670-\u26FF\u2701-\u2767\u2794-\u27BF\u2800-\u28FF\u2B00-\u2B2F\u2B45\u2B46\u2B50-\u2B59\u2CE5-\u2CEA\u2E80-\u2E99\u2E9B-\u2EF3\u2F00-\u2FD5\u2FF0-\u2FFB\u3004\u3012\u3013\u3020\u3036\u3037\u303E\u303F\u3190\u3191\u3196-\u319F\u31C0-\u31E3\u3200-\u321E\u322A-\u3247\u3250\u3260-\u327F\u328A-\u32B0\u32C0-\u32FE\u3300-\u33FF\u4DC0-\u4DFF\uA490-\uA4C6\uA828-\uA82B\uA836\uA837\uA839\uAA77-\uAA79\uFDFD\uFFE4\uFFE8\uFFED\uFFEE\uFFFC\uFFFD',
            astral: '\uD83D[\uDC00-\uDC3E\uDC40\uDC42-\uDCF7\uDCF9-\uDCFC\uDD00-\uDD3D\uDD40-\uDD43\uDD50-\uDD67\uDDFB-\uDE40\uDE45-\uDE4F\uDE80-\uDEC5\uDF00-\uDF73]|\uD834[\uDC00-\uDCF5\uDD00-\uDD26\uDD29-\uDD64\uDD6A-\uDD6C\uDD83\uDD84\uDD8C-\uDDA9\uDDAE-\uDDDD\uDE00-\uDE41\uDE45\uDF00-\uDF56]|\uD83C[\uDC00-\uDC2B\uDC30-\uDC93\uDCA0-\uDCAE\uDCB1-\uDCBE\uDCC1-\uDCCF\uDCD1-\uDCDF\uDD10-\uDD2E\uDD30-\uDD6B\uDD70-\uDD9A\uDDE6-\uDE02\uDE10-\uDE3A\uDE40-\uDE48\uDE50\uDE51\uDF00-\uDF20\uDF30-\uDF35\uDF37-\uDF7C\uDF80-\uDF93\uDFA0-\uDFC4\uDFC6-\uDFCA\uDFE0-\uDFF0]|\uD800[\uDD37-\uDD3F\uDD79-\uDD89\uDD90-\uDD9B\uDDD0-\uDDFC]'
        },
        {
            name: 'Z',
            alias: 'Separator',
            bmp: '\x20\xA0\u1680\u180E\u2000-\u200A\u2028\u2029\u202F\u205F\u3000'
        },
        {
            name: 'Zl',
            alias: 'Line_Separator',
            bmp: '\u2028'
        },
        {
            name: 'Zp',
            alias: 'Paragraph_Separator',
            bmp: '\u2029'
        },
        {
            name: 'Zs',
            alias: 'Space_Separator',
            bmp: '\x20\xA0\u1680\u180E\u2000-\u200A\u202F\u205F\u3000'
        }
    ]);

}(XRegExp));

/*!
 * XRegExp Unicode Properties 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2012 MIT License
 * Uses Unicode 6.2.0 <http://unicode.org/>
 * Unicode data generated by Mathias Bynens <http://mathiasbynens.be/>
 */

/**
 * Adds Level 1 Unicode properties (detailed in UTS #18 RL1.2). Token names are case insensitive,
 * and any spaces, hyphens, and underscores are ignored.
 * @requires XRegExp, Unicode Base
 */
(function(XRegExp) {
    

    if (!XRegExp.addUnicodeData) {
        throw new ReferenceError('Unicode Base must be loaded before Unicode Properties');
    }

    XRegExp.addUnicodeData([
        {
            name: 'ASCII',
            bmp: '\0-\x7F'
        },
        {
            name: 'Alphabetic',
            bmp: 'A-Za-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0345\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05B0-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0657\u0659-\u065F\u066E-\u06D3\u06D5-\u06DC\u06E1-\u06E8\u06ED-\u06EF\u06FA-\u06FC\u06FF\u0710-\u073F\u074D-\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0817\u081A-\u082C\u0840-\u0858\u08A0\u08A2-\u08AC\u08E4-\u08E9\u08F0-\u08FE\u0900-\u093B\u093D-\u094C\u094E-\u0950\u0955-\u0963\u0971-\u0977\u0979-\u097F\u0981-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD-\u09C4\u09C7\u09C8\u09CB\u09CC\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09F0\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3E-\u0A42\u0A47\u0A48\u0A4B\u0A4C\u0A51\u0A59-\u0A5C\u0A5E\u0A70-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD-\u0AC5\u0AC7-\u0AC9\u0ACB\u0ACC\u0AD0\u0AE0-\u0AE3\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D-\u0B44\u0B47\u0B48\u0B4B\u0B4C\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCC\u0BD0\u0BD7\u0C01-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4C\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C82\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCC\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CF1\u0CF2\u0D02\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4C\u0D4E\u0D57\u0D60-\u0D63\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E46\u0E4D\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0ECD\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F71-\u0F81\u0F88-\u0F97\u0F99-\u0FBC\u1000-\u1036\u1038\u103B-\u103F\u1050-\u1062\u1065-\u1068\u106E-\u1086\u108E\u109C\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1713\u1720-\u1733\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17B3\u17B6-\u17C8\u17D7\u17DC\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191C\u1920-\u192B\u1930-\u1938\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A1B\u1A20-\u1A5E\u1A61-\u1A74\u1AA7\u1B00-\u1B33\u1B35-\u1B43\u1B45-\u1B4B\u1B80-\u1BA9\u1BAC-\u1BAF\u1BBA-\u1BE5\u1BE7-\u1BF1\u1C00-\u1C35\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF3\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u24B6-\u24E9\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA674-\uA67B\uA67F-\uA697\uA69F-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA827\uA840-\uA873\uA880-\uA8C3\uA8F2-\uA8F7\uA8FB\uA90A-\uA92A\uA930-\uA952\uA960-\uA97C\uA980-\uA9B2\uA9B4-\uA9BF\uA9CF\uAA00-\uAA36\uAA40-\uAA4D\uAA60-\uAA76\uAA7A\uAA80-\uAABE\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF5\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABEA\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC',
            astral: '\uD803[\uDC00-\uDC48]|\uD801[\uDC00-\uDC9D]|\uD809[\uDC00-\uDC62]|\uD81A[\uDC00-\uDE38]|\uD804[\uDC00-\uDC45\uDC82-\uDCB8\uDCD0-\uDCE8\uDD00-\uDD32\uDD80-\uDDBF\uDDC1-\uDDC4]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD86E[\uDC00-\uDC1D]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD87E[\uDC00-\uDE1D]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE60-\uDE7C\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1E\uDF30-\uDF4A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF93-\uDF9F]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD82C[\uDC00\uDC01]|\uD808[\uDC00-\uDF6E]|\uD805[\uDE80-\uDEB5]'
        },
        // Assert: In BMP-only mode, `[\P{Any}]` (inverted Any within a character class) compiles to `[]`
        {
            name: 'Any',
            isBmpLast: true,
            bmp: '\0-\uFFFF',
            astral: '[\uD800-\uDBFF][\uDC00-\uDFFF]'
        },
        // Defined as the inverse of Unicode category Cn (Unassigned)
        {
            name: 'Assigned',
            inverseOf: 'Cn'
        },
        {
            name: 'Default_Ignorable_Code_Point',
            bmp: '\xAD\u034F\u115F\u1160\u17B4\u17B5\u180B-\u180D\u200B-\u200F\u202A-\u202E\u2060-\u206F\u3164\uFE00-\uFE0F\uFEFF\uFFA0\uFFF0-\uFFF8',
            astral: '[\uDB40-\uDB43][\uDC00-\uDFFF]|\uD834[\uDD73-\uDD7A]'
        },
        {
            name: 'Lowercase',
            bmp: 'a-z\xAA\xB5\xBA\xDF-\xF6\xF8-\xFF\u0101\u0103\u0105\u0107\u0109\u010B\u010D\u010F\u0111\u0113\u0115\u0117\u0119\u011B\u011D\u011F\u0121\u0123\u0125\u0127\u0129\u012B\u012D\u012F\u0131\u0133\u0135\u0137\u0138\u013A\u013C\u013E\u0140\u0142\u0144\u0146\u0148\u0149\u014B\u014D\u014F\u0151\u0153\u0155\u0157\u0159\u015B\u015D\u015F\u0161\u0163\u0165\u0167\u0169\u016B\u016D\u016F\u0171\u0173\u0175\u0177\u017A\u017C\u017E-\u0180\u0183\u0185\u0188\u018C\u018D\u0192\u0195\u0199-\u019B\u019E\u01A1\u01A3\u01A5\u01A8\u01AA\u01AB\u01AD\u01B0\u01B4\u01B6\u01B9\u01BA\u01BD-\u01BF\u01C6\u01C9\u01CC\u01CE\u01D0\u01D2\u01D4\u01D6\u01D8\u01DA\u01DC\u01DD\u01DF\u01E1\u01E3\u01E5\u01E7\u01E9\u01EB\u01ED\u01EF\u01F0\u01F3\u01F5\u01F9\u01FB\u01FD\u01FF\u0201\u0203\u0205\u0207\u0209\u020B\u020D\u020F\u0211\u0213\u0215\u0217\u0219\u021B\u021D\u021F\u0221\u0223\u0225\u0227\u0229\u022B\u022D\u022F\u0231\u0233-\u0239\u023C\u023F\u0240\u0242\u0247\u0249\u024B\u024D\u024F-\u0293\u0295-\u02B8\u02C0\u02C1\u02E0-\u02E4\u0345\u0371\u0373\u0377\u037A-\u037D\u0390\u03AC-\u03CE\u03D0\u03D1\u03D5-\u03D7\u03D9\u03DB\u03DD\u03DF\u03E1\u03E3\u03E5\u03E7\u03E9\u03EB\u03ED\u03EF-\u03F3\u03F5\u03F8\u03FB\u03FC\u0430-\u045F\u0461\u0463\u0465\u0467\u0469\u046B\u046D\u046F\u0471\u0473\u0475\u0477\u0479\u047B\u047D\u047F\u0481\u048B\u048D\u048F\u0491\u0493\u0495\u0497\u0499\u049B\u049D\u049F\u04A1\u04A3\u04A5\u04A7\u04A9\u04AB\u04AD\u04AF\u04B1\u04B3\u04B5\u04B7\u04B9\u04BB\u04BD\u04BF\u04C2\u04C4\u04C6\u04C8\u04CA\u04CC\u04CE\u04CF\u04D1\u04D3\u04D5\u04D7\u04D9\u04DB\u04DD\u04DF\u04E1\u04E3\u04E5\u04E7\u04E9\u04EB\u04ED\u04EF\u04F1\u04F3\u04F5\u04F7\u04F9\u04FB\u04FD\u04FF\u0501\u0503\u0505\u0507\u0509\u050B\u050D\u050F\u0511\u0513\u0515\u0517\u0519\u051B\u051D\u051F\u0521\u0523\u0525\u0527\u0561-\u0587\u1D00-\u1DBF\u1E01\u1E03\u1E05\u1E07\u1E09\u1E0B\u1E0D\u1E0F\u1E11\u1E13\u1E15\u1E17\u1E19\u1E1B\u1E1D\u1E1F\u1E21\u1E23\u1E25\u1E27\u1E29\u1E2B\u1E2D\u1E2F\u1E31\u1E33\u1E35\u1E37\u1E39\u1E3B\u1E3D\u1E3F\u1E41\u1E43\u1E45\u1E47\u1E49\u1E4B\u1E4D\u1E4F\u1E51\u1E53\u1E55\u1E57\u1E59\u1E5B\u1E5D\u1E5F\u1E61\u1E63\u1E65\u1E67\u1E69\u1E6B\u1E6D\u1E6F\u1E71\u1E73\u1E75\u1E77\u1E79\u1E7B\u1E7D\u1E7F\u1E81\u1E83\u1E85\u1E87\u1E89\u1E8B\u1E8D\u1E8F\u1E91\u1E93\u1E95-\u1E9D\u1E9F\u1EA1\u1EA3\u1EA5\u1EA7\u1EA9\u1EAB\u1EAD\u1EAF\u1EB1\u1EB3\u1EB5\u1EB7\u1EB9\u1EBB\u1EBD\u1EBF\u1EC1\u1EC3\u1EC5\u1EC7\u1EC9\u1ECB\u1ECD\u1ECF\u1ED1\u1ED3\u1ED5\u1ED7\u1ED9\u1EDB\u1EDD\u1EDF\u1EE1\u1EE3\u1EE5\u1EE7\u1EE9\u1EEB\u1EED\u1EEF\u1EF1\u1EF3\u1EF5\u1EF7\u1EF9\u1EFB\u1EFD\u1EFF-\u1F07\u1F10-\u1F15\u1F20-\u1F27\u1F30-\u1F37\u1F40-\u1F45\u1F50-\u1F57\u1F60-\u1F67\u1F70-\u1F7D\u1F80-\u1F87\u1F90-\u1F97\u1FA0-\u1FA7\u1FB0-\u1FB4\u1FB6\u1FB7\u1FBE\u1FC2-\u1FC4\u1FC6\u1FC7\u1FD0-\u1FD3\u1FD6\u1FD7\u1FE0-\u1FE7\u1FF2-\u1FF4\u1FF6\u1FF7\u2071\u207F\u2090-\u209C\u210A\u210E\u210F\u2113\u212F\u2134\u2139\u213C\u213D\u2146-\u2149\u214E\u2170-\u217F\u2184\u24D0-\u24E9\u2C30-\u2C5E\u2C61\u2C65\u2C66\u2C68\u2C6A\u2C6C\u2C71\u2C73\u2C74\u2C76-\u2C7D\u2C81\u2C83\u2C85\u2C87\u2C89\u2C8B\u2C8D\u2C8F\u2C91\u2C93\u2C95\u2C97\u2C99\u2C9B\u2C9D\u2C9F\u2CA1\u2CA3\u2CA5\u2CA7\u2CA9\u2CAB\u2CAD\u2CAF\u2CB1\u2CB3\u2CB5\u2CB7\u2CB9\u2CBB\u2CBD\u2CBF\u2CC1\u2CC3\u2CC5\u2CC7\u2CC9\u2CCB\u2CCD\u2CCF\u2CD1\u2CD3\u2CD5\u2CD7\u2CD9\u2CDB\u2CDD\u2CDF\u2CE1\u2CE3\u2CE4\u2CEC\u2CEE\u2CF3\u2D00-\u2D25\u2D27\u2D2D\uA641\uA643\uA645\uA647\uA649\uA64B\uA64D\uA64F\uA651\uA653\uA655\uA657\uA659\uA65B\uA65D\uA65F\uA661\uA663\uA665\uA667\uA669\uA66B\uA66D\uA681\uA683\uA685\uA687\uA689\uA68B\uA68D\uA68F\uA691\uA693\uA695\uA697\uA723\uA725\uA727\uA729\uA72B\uA72D\uA72F-\uA731\uA733\uA735\uA737\uA739\uA73B\uA73D\uA73F\uA741\uA743\uA745\uA747\uA749\uA74B\uA74D\uA74F\uA751\uA753\uA755\uA757\uA759\uA75B\uA75D\uA75F\uA761\uA763\uA765\uA767\uA769\uA76B\uA76D\uA76F-\uA778\uA77A\uA77C\uA77F\uA781\uA783\uA785\uA787\uA78C\uA78E\uA791\uA793\uA7A1\uA7A3\uA7A5\uA7A7\uA7A9\uA7F8-\uA7FA\uFB00-\uFB06\uFB13-\uFB17\uFF41-\uFF5A',
            astral: '\uD835[\uDC1A-\uDC33\uDC4E-\uDC54\uDC56-\uDC67\uDC82-\uDC9B\uDCB6-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDCCF\uDCEA-\uDD03\uDD1E-\uDD37\uDD52-\uDD6B\uDD86-\uDD9F\uDDBA-\uDDD3\uDDEE-\uDE07\uDE22-\uDE3B\uDE56-\uDE6F\uDE8A-\uDEA5\uDEC2-\uDEDA\uDEDC-\uDEE1\uDEFC-\uDF14\uDF16-\uDF1B\uDF36-\uDF4E\uDF50-\uDF55\uDF70-\uDF88\uDF8A-\uDF8F\uDFAA-\uDFC2\uDFC4-\uDFC9\uDFCB]|\uD801[\uDC28-\uDC4F]'
        },
        {
            name: 'Noncharacter_Code_Point',
            bmp: '\uFDD0-\uFDEF\uFFFE\uFFFF',
            astral: '[\uDB3F\uDB7F\uDBBF\uDBFF\uD83F\uD87F\uD8BF\uDAFF\uD97F\uD9BF\uD9FF\uDA3F\uD8FF\uDABF\uDA7F\uD93F][\uDFFE\uDFFF]'
        },
        {
            name: 'Uppercase',
            bmp: 'A-Z\xC0-\xD6\xD8-\xDE\u0100\u0102\u0104\u0106\u0108\u010A\u010C\u010E\u0110\u0112\u0114\u0116\u0118\u011A\u011C\u011E\u0120\u0122\u0124\u0126\u0128\u012A\u012C\u012E\u0130\u0132\u0134\u0136\u0139\u013B\u013D\u013F\u0141\u0143\u0145\u0147\u014A\u014C\u014E\u0150\u0152\u0154\u0156\u0158\u015A\u015C\u015E\u0160\u0162\u0164\u0166\u0168\u016A\u016C\u016E\u0170\u0172\u0174\u0176\u0178\u0179\u017B\u017D\u0181\u0182\u0184\u0186\u0187\u0189-\u018B\u018E-\u0191\u0193\u0194\u0196-\u0198\u019C\u019D\u019F\u01A0\u01A2\u01A4\u01A6\u01A7\u01A9\u01AC\u01AE\u01AF\u01B1-\u01B3\u01B5\u01B7\u01B8\u01BC\u01C4\u01C7\u01CA\u01CD\u01CF\u01D1\u01D3\u01D5\u01D7\u01D9\u01DB\u01DE\u01E0\u01E2\u01E4\u01E6\u01E8\u01EA\u01EC\u01EE\u01F1\u01F4\u01F6-\u01F8\u01FA\u01FC\u01FE\u0200\u0202\u0204\u0206\u0208\u020A\u020C\u020E\u0210\u0212\u0214\u0216\u0218\u021A\u021C\u021E\u0220\u0222\u0224\u0226\u0228\u022A\u022C\u022E\u0230\u0232\u023A\u023B\u023D\u023E\u0241\u0243-\u0246\u0248\u024A\u024C\u024E\u0370\u0372\u0376\u0386\u0388-\u038A\u038C\u038E\u038F\u0391-\u03A1\u03A3-\u03AB\u03CF\u03D2-\u03D4\u03D8\u03DA\u03DC\u03DE\u03E0\u03E2\u03E4\u03E6\u03E8\u03EA\u03EC\u03EE\u03F4\u03F7\u03F9\u03FA\u03FD-\u042F\u0460\u0462\u0464\u0466\u0468\u046A\u046C\u046E\u0470\u0472\u0474\u0476\u0478\u047A\u047C\u047E\u0480\u048A\u048C\u048E\u0490\u0492\u0494\u0496\u0498\u049A\u049C\u049E\u04A0\u04A2\u04A4\u04A6\u04A8\u04AA\u04AC\u04AE\u04B0\u04B2\u04B4\u04B6\u04B8\u04BA\u04BC\u04BE\u04C0\u04C1\u04C3\u04C5\u04C7\u04C9\u04CB\u04CD\u04D0\u04D2\u04D4\u04D6\u04D8\u04DA\u04DC\u04DE\u04E0\u04E2\u04E4\u04E6\u04E8\u04EA\u04EC\u04EE\u04F0\u04F2\u04F4\u04F6\u04F8\u04FA\u04FC\u04FE\u0500\u0502\u0504\u0506\u0508\u050A\u050C\u050E\u0510\u0512\u0514\u0516\u0518\u051A\u051C\u051E\u0520\u0522\u0524\u0526\u0531-\u0556\u10A0-\u10C5\u10C7\u10CD\u1E00\u1E02\u1E04\u1E06\u1E08\u1E0A\u1E0C\u1E0E\u1E10\u1E12\u1E14\u1E16\u1E18\u1E1A\u1E1C\u1E1E\u1E20\u1E22\u1E24\u1E26\u1E28\u1E2A\u1E2C\u1E2E\u1E30\u1E32\u1E34\u1E36\u1E38\u1E3A\u1E3C\u1E3E\u1E40\u1E42\u1E44\u1E46\u1E48\u1E4A\u1E4C\u1E4E\u1E50\u1E52\u1E54\u1E56\u1E58\u1E5A\u1E5C\u1E5E\u1E60\u1E62\u1E64\u1E66\u1E68\u1E6A\u1E6C\u1E6E\u1E70\u1E72\u1E74\u1E76\u1E78\u1E7A\u1E7C\u1E7E\u1E80\u1E82\u1E84\u1E86\u1E88\u1E8A\u1E8C\u1E8E\u1E90\u1E92\u1E94\u1E9E\u1EA0\u1EA2\u1EA4\u1EA6\u1EA8\u1EAA\u1EAC\u1EAE\u1EB0\u1EB2\u1EB4\u1EB6\u1EB8\u1EBA\u1EBC\u1EBE\u1EC0\u1EC2\u1EC4\u1EC6\u1EC8\u1ECA\u1ECC\u1ECE\u1ED0\u1ED2\u1ED4\u1ED6\u1ED8\u1EDA\u1EDC\u1EDE\u1EE0\u1EE2\u1EE4\u1EE6\u1EE8\u1EEA\u1EEC\u1EEE\u1EF0\u1EF2\u1EF4\u1EF6\u1EF8\u1EFA\u1EFC\u1EFE\u1F08-\u1F0F\u1F18-\u1F1D\u1F28-\u1F2F\u1F38-\u1F3F\u1F48-\u1F4D\u1F59\u1F5B\u1F5D\u1F5F\u1F68-\u1F6F\u1FB8-\u1FBB\u1FC8-\u1FCB\u1FD8-\u1FDB\u1FE8-\u1FEC\u1FF8-\u1FFB\u2102\u2107\u210B-\u210D\u2110-\u2112\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u2130-\u2133\u213E\u213F\u2145\u2160-\u216F\u2183\u24B6-\u24CF\u2C00-\u2C2E\u2C60\u2C62-\u2C64\u2C67\u2C69\u2C6B\u2C6D-\u2C70\u2C72\u2C75\u2C7E-\u2C80\u2C82\u2C84\u2C86\u2C88\u2C8A\u2C8C\u2C8E\u2C90\u2C92\u2C94\u2C96\u2C98\u2C9A\u2C9C\u2C9E\u2CA0\u2CA2\u2CA4\u2CA6\u2CA8\u2CAA\u2CAC\u2CAE\u2CB0\u2CB2\u2CB4\u2CB6\u2CB8\u2CBA\u2CBC\u2CBE\u2CC0\u2CC2\u2CC4\u2CC6\u2CC8\u2CCA\u2CCC\u2CCE\u2CD0\u2CD2\u2CD4\u2CD6\u2CD8\u2CDA\u2CDC\u2CDE\u2CE0\u2CE2\u2CEB\u2CED\u2CF2\uA640\uA642\uA644\uA646\uA648\uA64A\uA64C\uA64E\uA650\uA652\uA654\uA656\uA658\uA65A\uA65C\uA65E\uA660\uA662\uA664\uA666\uA668\uA66A\uA66C\uA680\uA682\uA684\uA686\uA688\uA68A\uA68C\uA68E\uA690\uA692\uA694\uA696\uA722\uA724\uA726\uA728\uA72A\uA72C\uA72E\uA732\uA734\uA736\uA738\uA73A\uA73C\uA73E\uA740\uA742\uA744\uA746\uA748\uA74A\uA74C\uA74E\uA750\uA752\uA754\uA756\uA758\uA75A\uA75C\uA75E\uA760\uA762\uA764\uA766\uA768\uA76A\uA76C\uA76E\uA779\uA77B\uA77D\uA77E\uA780\uA782\uA784\uA786\uA78B\uA78D\uA790\uA792\uA7A0\uA7A2\uA7A4\uA7A6\uA7A8\uA7AA\uFF21-\uFF3A',
            astral: '\uD835[\uDC00-\uDC19\uDC34-\uDC4D\uDC68-\uDC81\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB5\uDCD0-\uDCE9\uDD04\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD38\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD6C-\uDD85\uDDA0-\uDDB9\uDDD4-\uDDED\uDE08-\uDE21\uDE3C-\uDE55\uDE70-\uDE89\uDEA8-\uDEC0\uDEE2-\uDEFA\uDF1C-\uDF34\uDF56-\uDF6E\uDF90-\uDFA8\uDFCA]|\uD801[\uDC00-\uDC27]'
        },
        {
            name: 'White_Space',
            bmp: '\x09-\x0D\x20\x85\xA0\u1680\u180E\u2000-\u200A\u2028\u2029\u202F\u205F\u3000'
        }
    ]);

}(XRegExp));

/*!
 * XRegExp Unicode Scripts 3.0.0-pre
 * <http://xregexp.com/>
 * Steven Levithan � 2010-2012 MIT License
 * Uses Unicode 6.2.0 <http://unicode.org/>
 * Unicode data generated by Mathias Bynens <http://mathiasbynens.be/>
 */

/**
 * Adds support for all Unicode scripts. E.g., `\p{Latin}`. Token names are case insensitive, and
 * any spaces, hyphens, and underscores are ignored.
 * @requires XRegExp, Unicode Base
 */
(function(XRegExp) {
    

    if (!XRegExp.addUnicodeData) {
        throw new ReferenceError('Unicode Base must be loaded before Unicode Scripts');
    }

    XRegExp.addUnicodeData([
        {
            name: 'Arabic',
            bmp: '\u0600-\u0604\u0606-\u060B\u060D-\u061A\u061E\u0620-\u063F\u0641-\u064A\u0656-\u065F\u066A-\u066F\u0671-\u06DC\u06DE-\u06FF\u0750-\u077F\u08A0\u08A2-\u08AC\u08E4-\u08FE\uFB50-\uFBC1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFC\uFE70-\uFE74\uFE76-\uFEFC',
            astral: '\uD803[\uDE60-\uDE7E]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB\uDEF0\uDEF1]'
        },
        {
            name: 'Armenian',
            bmp: '\u0531-\u0556\u0559-\u055F\u0561-\u0587\u058A\u058F\uFB13-\uFB17'
        },
        {
            name: 'Avestan',
            astral: '\uD802[\uDF00-\uDF35\uDF39-\uDF3F]'
        },
        {
            name: 'Balinese',
            bmp: '\u1B00-\u1B4B\u1B50-\u1B7C'
        },
        {
            name: 'Bamum',
            bmp: '\uA6A0-\uA6F7',
            astral: '\uD81A[\uDC00-\uDE38]'
        },
        {
            name: 'Batak',
            bmp: '\u1BC0-\u1BF3\u1BFC-\u1BFF'
        },
        {
            name: 'Bengali',
            bmp: '\u0981-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09FB'
        },
        {
            name: 'Bopomofo',
            bmp: '\u02EA\u02EB\u3105-\u312D\u31A0-\u31BA'
        },
        {
            name: 'Brahmi',
            astral: '\uD804[\uDC00-\uDC4D\uDC52-\uDC6F]'
        },
        {
            name: 'Braille',
            bmp: '\u2800-\u28FF'
        },
        {
            name: 'Buginese',
            bmp: '\u1A00-\u1A1B\u1A1E\u1A1F'
        },
        {
            name: 'Buhid',
            bmp: '\u1740-\u1753'
        },
        {
            name: 'Canadian_Aboriginal',
            bmp: '\u1400-\u167F\u18B0-\u18F5'
        },
        {
            name: 'Carian',
            astral: '\uD800[\uDEA0-\uDED0]'
        },
        {
            name: 'Chakma',
            astral: '\uD804[\uDD00-\uDD34\uDD36-\uDD43]'
        },
        {
            name: 'Cham',
            bmp: '\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA5C-\uAA5F'
        },
        {
            name: 'Cherokee',
            bmp: '\u13A0-\u13F4'
        },
        {
            name: 'Common',
            bmp: '\0-\x40\\x5B-\x60\\x7B-\xA9\xAB-\xB9\xBB-\xBF\xD7\xF7\u02B9-\u02DF\u02E5-\u02E9\u02EC-\u02FF\u0374\u037E\u0385\u0387\u0589\u060C\u061B\u061F\u0640\u0660-\u0669\u06DD\u0964\u0965\u0E3F\u0FD5-\u0FD8\u10FB\u16EB-\u16ED\u1735\u1736\u1802\u1803\u1805\u1CD3\u1CE1\u1CE9-\u1CEC\u1CEE-\u1CF3\u1CF5\u1CF6\u2000-\u200B\u200E-\u2064\u206A-\u2070\u2074-\u207E\u2080-\u208E\u20A0-\u20BA\u2100-\u2125\u2127-\u2129\u212C-\u2131\u2133-\u214D\u214F-\u215F\u2189\u2190-\u23F3\u2400-\u2426\u2440-\u244A\u2460-\u26FF\u2701-\u27FF\u2900-\u2B4C\u2B50-\u2B59\u2E00-\u2E3B\u2FF0-\u2FFB\u3000-\u3004\u3006\u3008-\u3020\u3030-\u3037\u303C-\u303F\u309B\u309C\u30A0\u30FB\u30FC\u3190-\u319F\u31C0-\u31E3\u3220-\u325F\u327F-\u32CF\u3358-\u33FF\u4DC0-\u4DFF\uA700-\uA721\uA788-\uA78A\uA830-\uA839\uFD3E\uFD3F\uFDFD\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE66\uFE68-\uFE6B\uFEFF\uFF01-\uFF20\uFF3B-\uFF40\uFF5B-\uFF65\uFF70\uFF9E\uFF9F\uFFE0-\uFFE6\uFFE8-\uFFEE\uFFF9-\uFFFD',
            astral: '\uD800[\uDD00-\uDD02\uDD07-\uDD33\uDD37-\uDD3F\uDD90-\uDD9B\uDDD0-\uDDFC]|\uD83C[\uDC00-\uDC2B\uDC30-\uDC93\uDCA0-\uDCAE\uDCB1-\uDCBE\uDCC1-\uDCCF\uDCD1-\uDCDF\uDD00-\uDD0A\uDD10-\uDD2E\uDD30-\uDD6B\uDD70-\uDD9A\uDDE6-\uDDFF\uDE01\uDE02\uDE10-\uDE3A\uDE40-\uDE48\uDE50\uDE51\uDF00-\uDF20\uDF30-\uDF35\uDF37-\uDF7C\uDF80-\uDF93\uDFA0-\uDFC4\uDFC6-\uDFCA\uDFE0-\uDFF0]|\uDB40[\uDC01\uDC20-\uDC7F]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDFCB\uDFCE-\uDFFF]|\uD834[\uDC00-\uDCF5\uDD00-\uDD26\uDD29-\uDD66\uDD6A-\uDD7A\uDD83\uDD84\uDD8C-\uDDA9\uDDAE-\uDDDD\uDF00-\uDF56\uDF60-\uDF71]|\uD83D[\uDC00-\uDC3E\uDC40\uDC42-\uDCF7\uDCF9-\uDCFC\uDD00-\uDD3D\uDD40-\uDD43\uDD50-\uDD67\uDDFB-\uDE40\uDE45-\uDE4F\uDE80-\uDEC5\uDF00-\uDF73]'
        },
        {
            name: 'Coptic',
            bmp: '\u03E2-\u03EF\u2C80-\u2CF3\u2CF9-\u2CFF'
        },
        {
            name: 'Cuneiform',
            astral: '\uD809[\uDC00-\uDC62\uDC70-\uDC73]|\uD808[\uDC00-\uDF6E]'
        },
        {
            name: 'Cypriot',
            astral: '\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F]'
        },
        {
            name: 'Cyrillic',
            bmp: '\u0400-\u0484\u0487-\u0527\u1D2B\u1D78\u2DE0-\u2DFF\uA640-\uA697\uA69F'
        },
        {
            name: 'Deseret',
            astral: '\uD801[\uDC00-\uDC4F]'
        },
        {
            name: 'Devanagari',
            bmp: '\u0900-\u0950\u0953-\u0963\u0966-\u0977\u0979-\u097F\uA8E0-\uA8FB'
        },
        {
            name: 'Egyptian_Hieroglyphs',
            astral: '\uD80C[\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]'
        },
        {
            name: 'Ethiopic',
            bmp: '\u1200-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u137C\u1380-\u1399\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E'
        },
        {
            name: 'Georgian',
            bmp: '\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u10FF\u2D00-\u2D25\u2D27\u2D2D'
        },
        {
            name: 'Glagolitic',
            bmp: '\u2C00-\u2C2E\u2C30-\u2C5E'
        },
        {
            name: 'Gothic',
            astral: '\uD800[\uDF30-\uDF4A]'
        },
        {
            name: 'Greek',
            bmp: '\u0370-\u0373\u0375-\u0377\u037A-\u037D\u0384\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03E1\u03F0-\u03FF\u1D26-\u1D2A\u1D5D-\u1D61\u1D66-\u1D6A\u1DBF\u1F00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FC4\u1FC6-\u1FD3\u1FD6-\u1FDB\u1FDD-\u1FEF\u1FF2-\u1FF4\u1FF6-\u1FFE\u2126',
            astral: '\uD834[\uDE00-\uDE45]|\uD800[\uDD40-\uDD8A]'
        },
        {
            name: 'Gujarati',
            bmp: '\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AF1'
        },
        {
            name: 'Gurmukhi',
            bmp: '\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75'
        },
        {
            name: 'Han',
            bmp: '\u2E80-\u2E99\u2E9B-\u2EF3\u2F00-\u2FD5\u3005\u3007\u3021-\u3029\u3038-\u303B\u3400-\u4DB5\u4E00-\u9FCC\uF900-\uFA6D\uFA70-\uFAD9',
            astral: '[\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD87E[\uDC00-\uDE1D]'
        },
        {
            name: 'Hangul',
            bmp: '\u1100-\u11FF\u302E\u302F\u3131-\u318E\u3200-\u321E\u3260-\u327E\uA960-\uA97C\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uFFA0-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC'
        },
        {
            name: 'Hanunoo',
            bmp: '\u1720-\u1734'
        },
        {
            name: 'Hebrew',
            bmp: '\u0591-\u05C7\u05D0-\u05EA\u05F0-\u05F4\uFB1D-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFB4F'
        },
        {
            name: 'Hiragana',
            bmp: '\u3041-\u3096\u309D-\u309F',
            astral: '\uD82C\uDC01|\uD83C\uDE00'
        },
        {
            name: 'Imperial_Aramaic',
            astral: '\uD802[\uDC40-\uDC55\uDC57-\uDC5F]'
        },
        {
            name: 'Inherited',
            bmp: '\u0300-\u036F\u0485\u0486\u064B-\u0655\u0670\u0951\u0952\u1CD0-\u1CD2\u1CD4-\u1CE0\u1CE2-\u1CE8\u1CED\u1CF4\u1DC0-\u1DE6\u1DFC-\u1DFF\u200C\u200D\u20D0-\u20F0\u302A-\u302D\u3099\u309A\uFE00-\uFE0F\uFE20-\uFE26',
            astral: '\uD834[\uDD67-\uDD69\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD]|\uD800\uDDFD|\uDB40[\uDD00-\uDDEF]'
        },
        {
            name: 'Inscriptional_Pahlavi',
            astral: '\uD802[\uDF60-\uDF72\uDF78-\uDF7F]'
        },
        {
            name: 'Inscriptional_Parthian',
            astral: '\uD802[\uDF40-\uDF55\uDF58-\uDF5F]'
        },
        {
            name: 'Javanese',
            bmp: '\uA980-\uA9CD\uA9CF-\uA9D9\uA9DE\uA9DF'
        },
        {
            name: 'Kaithi',
            astral: '\uD804[\uDC80-\uDCC1]'
        },
        {
            name: 'Kannada',
            bmp: '\u0C82\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2'
        },
        {
            name: 'Katakana',
            bmp: '\u30A1-\u30FA\u30FD-\u30FF\u31F0-\u31FF\u32D0-\u32FE\u3300-\u3357\uFF66-\uFF6F\uFF71-\uFF9D',
            astral: '\uD82C\uDC00'
        },
        {
            name: 'Kayah_Li',
            bmp: '\uA900-\uA92F'
        },
        {
            name: 'Kharoshthi',
            astral: '\uD802[\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F-\uDE47\uDE50-\uDE58]'
        },
        {
            name: 'Khmer',
            bmp: '\u1780-\u17DD\u17E0-\u17E9\u17F0-\u17F9\u19E0-\u19FF'
        },
        {
            name: 'Lao',
            bmp: '\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF'
        },
        {
            name: 'Latin',
            bmp: 'A-Za-z\xAA\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02B8\u02E0-\u02E4\u1D00-\u1D25\u1D2C-\u1D5C\u1D62-\u1D65\u1D6B-\u1D77\u1D79-\u1DBE\u1E00-\u1EFF\u2071\u207F\u2090-\u209C\u212A\u212B\u2132\u214E\u2160-\u2188\u2C60-\u2C7F\uA722-\uA787\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA7FF\uFB00-\uFB06\uFF21-\uFF3A\uFF41-\uFF5A'
        },
        {
            name: 'Lepcha',
            bmp: '\u1C00-\u1C37\u1C3B-\u1C49\u1C4D-\u1C4F'
        },
        {
            name: 'Limbu',
            bmp: '\u1900-\u191C\u1920-\u192B\u1930-\u193B\u1940\u1944-\u194F'
        },
        {
            name: 'Linear_B',
            astral: '\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA]'
        },
        {
            name: 'Lisu',
            bmp: '\uA4D0-\uA4FF'
        },
        {
            name: 'Lycian',
            astral: '\uD800[\uDE80-\uDE9C]'
        },
        {
            name: 'Lydian',
            astral: '\uD802[\uDD20-\uDD39\uDD3F]'
        },
        {
            name: 'Malayalam',
            bmp: '\u0D02\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D75\u0D79-\u0D7F'
        },
        {
            name: 'Mandaic',
            bmp: '\u0840-\u085B\u085E'
        },
        {
            name: 'Meetei_Mayek',
            bmp: '\uAAE0-\uAAF6\uABC0-\uABED\uABF0-\uABF9'
        },
        {
            name: 'Meroitic_Cursive',
            astral: '\uD802[\uDDA0-\uDDB7\uDDBE\uDDBF]'
        },
        {
            name: 'Meroitic_Hieroglyphs',
            astral: '\uD802[\uDD80-\uDD9F]'
        },
        {
            name: 'Miao',
            astral: '\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F]'
        },
        {
            name: 'Mongolian',
            bmp: '\u1800\u1801\u1804\u1806-\u180E\u1810-\u1819\u1820-\u1877\u1880-\u18AA'
        },
        {
            name: 'Myanmar',
            bmp: '\u1000-\u109F\uAA60-\uAA7B'
        },
        {
            name: 'New_Tai_Lue',
            bmp: '\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u19DE\u19DF'
        },
        {
            name: 'Nko',
            bmp: '\u07C0-\u07FA'
        },
        {
            name: 'Ogham',
            bmp: '\u1680-\u169C'
        },
        {
            name: 'Ol_Chiki',
            bmp: '\u1C50-\u1C7F'
        },
        {
            name: 'Old_Italic',
            astral: '\uD800[\uDF00-\uDF1E\uDF20-\uDF23]'
        },
        {
            name: 'Old_Persian',
            astral: '\uD800[\uDFA0-\uDFC3\uDFC8-\uDFD5]'
        },
        {
            name: 'Old_South_Arabian',
            astral: '\uD802[\uDE60-\uDE7F]'
        },
        {
            name: 'Old_Turkic',
            astral: '\uD803[\uDC00-\uDC48]'
        },
        {
            name: 'Oriya',
            bmp: '\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B77'
        },
        {
            name: 'Osmanya',
            astral: '\uD801[\uDC80-\uDC9D\uDCA0-\uDCA9]'
        },
        {
            name: 'Phags_Pa',
            bmp: '\uA840-\uA877'
        },
        {
            name: 'Phoenician',
            astral: '\uD802[\uDD00-\uDD1B\uDD1F]'
        },
        {
            name: 'Rejang',
            bmp: '\uA930-\uA953\uA95F'
        },
        {
            name: 'Runic',
            bmp: '\u16A0-\u16EA\u16EE-\u16F0'
        },
        {
            name: 'Samaritan',
            bmp: '\u0800-\u082D\u0830-\u083E'
        },
        {
            name: 'Saurashtra',
            bmp: '\uA880-\uA8C4\uA8CE-\uA8D9'
        },
        {
            name: 'Sharada',
            astral: '\uD804[\uDD80-\uDDC8\uDDD0-\uDDD9]'
        },
        {
            name: 'Shavian',
            astral: '\uD801[\uDC50-\uDC7F]'
        },
        {
            name: 'Sinhala',
            bmp: '\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2-\u0DF4'
        },
        {
            name: 'Sora_Sompeng',
            astral: '\uD804[\uDCD0-\uDCE8\uDCF0-\uDCF9]'
        },
        {
            name: 'Sundanese',
            bmp: '\u1B80-\u1BBF\u1CC0-\u1CC7'
        },
        {
            name: 'Syloti_Nagri',
            bmp: '\uA800-\uA82B'
        },
        {
            name: 'Syriac',
            bmp: '\u0700-\u070D\u070F-\u074A\u074D-\u074F'
        },
        {
            name: 'Tagalog',
            bmp: '\u1700-\u170C\u170E-\u1714'
        },
        {
            name: 'Tagbanwa',
            bmp: '\u1760-\u176C\u176E-\u1770\u1772\u1773'
        },
        {
            name: 'Tai_Le',
            bmp: '\u1950-\u196D\u1970-\u1974'
        },
        {
            name: 'Tai_Tham',
            bmp: '\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA0-\u1AAD'
        },
        {
            name: 'Tai_Viet',
            bmp: '\uAA80-\uAAC2\uAADB-\uAADF'
        },
        {
            name: 'Takri',
            astral: '\uD805[\uDE80-\uDEB7\uDEC0-\uDEC9]'
        },
        {
            name: 'Tamil',
            bmp: '\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BFA'
        },
        {
            name: 'Telugu',
            bmp: '\u0C01-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C78-\u0C7F'
        },
        {
            name: 'Thaana',
            bmp: '\u0780-\u07B1'
        },
        {
            name: 'Thai',
            bmp: '\u0E01-\u0E3A\u0E40-\u0E5B'
        },
        {
            name: 'Tibetan',
            bmp: '\u0F00-\u0F47\u0F49-\u0F6C\u0F71-\u0F97\u0F99-\u0FBC\u0FBE-\u0FCC\u0FCE-\u0FD4\u0FD9\u0FDA'
        },
        {
            name: 'Tifinagh',
            bmp: '\u2D30-\u2D67\u2D6F\u2D70\u2D7F'
        },
        {
            name: 'Ugaritic',
            astral: '\uD800[\uDF80-\uDF9D\uDF9F]'
        },
        {
            name: 'Vai',
            bmp: '\uA500-\uA62B'
        },
        {
            name: 'Yi',
            bmp: '\uA000-\uA48C\uA490-\uA4C6'
        }
    ]);

}(XRegExp));

return XRegExp;

}));


define('utils',[
    "underscore",
    "crel",
    "xregexp",
    // "stacktrace",
    // "FileSaver",
], function(_, crel, XRegExp) {

    var utils = {};

    // Return a parameter from the URL
    utils.getURLParameter = function(name) {
        // Parameter can be either a search parameter (&name=...) or a hash fragment parameter (#!name=...)
        var regex = new RegExp("(?:\\?|\\#\\!|&)" + name + "=(.+?)(?:&|\\#|$)");
        try {
            return decodeURIComponent(regex.exec(location.search + location.hash)[1]);
        }
        catch(e) {
            return undefined;
        }
    };

    // Transform a selector into a jQuery object
    function jqElt(element) {
        if(_.isString(element)) {
            return $(element);
        }
        return element;
    }

    // For input control
    function inputError(element, event) {
        if(event !== undefined) {
            element.stop(true, true).addClass("error").delay(1000).switchClass("error");
            event.stopPropagation();
        }
    }

    // Return input value
    utils.getInputValue = function(element) {
        element = jqElt(element);
        return element.val();
    };

    // Set input value
    utils.setInputValue = function(element, value) {
        element = jqElt(element);
        element.val(value);
    };

    // Return input text value
    utils.getInputTextValue = function(element, event, validationRegex) {
        element = jqElt(element);
        var value = element.val();
        if(value === undefined) {
            inputError(element, event);
            return undefined;
        }
        // trim
        value = utils.trim(value);
        if((value.length === 0) || (validationRegex !== undefined && !value.match(validationRegex))) {
            inputError(element, event);
            return undefined;
        }
        return value;
    };

    // Return input integer value
    utils.getInputIntValue = function(element, event, min, max) {
        element = jqElt(element);
        var value = utils.getInputTextValue(element, event);
        if(value === undefined) {
            return undefined;
        }
        value = parseInt(value, 10);
        if(isNaN(value) || (min !== undefined && value < min) || (max !== undefined && value > max)) {
            inputError(element, event);
            return undefined;
        }
        return value;
    };

    // Return input value and check that it's a valid RegExp
    utils.getInputRegExpValue = function(element, event) {
        element = jqElt(element);
        var value = utils.getInputTextValue(element, event);
        if(value === undefined) {
            return undefined;
        }
        try {
            new RegExp(value);
        }
        catch(e) {
            inputError(element, event);
            return undefined;
        }
        return value;
    };

    // Return input value and check that it's a valid JavaScript object
    utils.getInputJsValue = function(element, event) {
        element = jqElt(element);
        var value = utils.getInputTextValue(element, event);
        if(value === undefined) {
            return undefined;
        }
        try {
            /*jshint evil:true */
            eval("var test=" + value);
            /*jshint evil:false */
        }
        catch(e) {
            inputError(element, event);
            return undefined;
        }
        return value;
    };

    // Return checkbox boolean value
    utils.getInputChecked = function(element) {
        element = jqElt(element);
        return element.prop("checked");
    };

    // Set checkbox state
    utils.setInputChecked = function(element, checked) {
        element = jqElt(element);
        element.prop("checked", checked).change();
    };

    // Get radio button value
    utils.getInputRadio = function(name) {
        return $("input:radio[name=" + name + "]:checked").prop("value");
    };

    // Set radio button value
    utils.setInputRadio = function(name, value) {
        $("input:radio[name=" + name + "][value=" + value + "]").prop("checked", true).change();
    };

    // Reset input control in all modals
    utils.resetModalInputs = function() {
        $(".modal input[type=text]:not([disabled]), .modal input[type=password], .modal textarea").val("");
        $(".modal input[type=checkbox]").prop("checked", false).change();
    };

    // Basic trim function
    utils.trim = function(str) {
        return $.trim(str);
    };

    // Slug function
    var nonWordChars = XRegExp('[^\\p{L}\\p{N}-]', 'g');
    utils.slugify = function(text) {
        return text.toLowerCase().replace(/\s/g, '-') // Replace spaces with -
        .replace(nonWordChars, '') // Remove all non-word chars
        .replace(/\-\-+/g, '-') // Replace multiple - with single -
        .replace(/^-+/, '') // Trim - from start of text
        .replace(/-+$/, ''); // Trim - from end of text
    };

    // Check an URL
    utils.checkUrl = function(url, addSlash) {
        if(!url) {
            return url;
        }
        if(url.indexOf("http") !== 0) {
            url = "http://" + url;
        }
        if(addSlash && url.indexOf("/", url.length - 1) === -1) {
            url += "/";
        }
        return url;
    };

    
    utils.randomString = function() {
        return _.random(4294967296).toString(36);
    };

    // Time shared by others modules
    utils.updateCurrentTime = function() {
        utils.currentTime = new Date().getTime();
    };
    utils.updateCurrentTime();

    // Serialize sync/publish attributes and store it in the storage
    utils.storeAttributes = function(attributes) {
    };

    // Retrieve/parse an index array from storage
    utils.retrieveIndexArray = function(storeIndex) {
    };

    // Append an index to an array in storage
    utils.appendIndexToArray = function(storeIndex, index) {
    };

    // Remove an index from an array in storage
    utils.removeIndexFromArray = function(storeIndex, index) {
    };

    // Retrieve/parse an object from storage. Returns undefined if error.
    utils.retrieveIgnoreError = function(storeIndex) {
    };

    var eventList = [];
    utils.logValue = function(value) {
    };
    utils.logStackTrace = function() {
    };
    utils.formatEventList = function() {
        var result = [];
        _.each(eventList, function(event) {
            result.push("\n");
            if(_.isString(event)) {
                result.push(event);
            }
            else if(_.isArray(event)) {
                result.push(event[5] || "");
                result.push(event[6] || "");
            }
        });
        return result.join("");
    };

    return utils;
});

define('classes/Extension',[],function() {
    
    function Extension(extensionId, extensionName, isOptional, disableInViewer, disableInLight) {
        this.extensionId = extensionId;
        this.extensionName = extensionName;
        this.isOptional = isOptional;
        this.disableInViewer = disableInViewer;
        this.disableInLight = disableInLight;
    }
    
    return Extension;
});
define('settings',[
], function () {
    var settings = {
        layoutOrientation: "horizontal",
        lazyRendering: true,
        editorFontFamily: 'Menlo, Consolas, "Courier New", Courier, monospace',
        editorFontSize: 13,
        shortcuts: {},
        extensionSettings: {}
    };
    return settings;
});
// Copyright (C) 2006 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


/**
 * @fileoverview
 * some functions for browser-side pretty printing of code contained in html.
 *
 * <p>
 * For a fairly comprehensive set of languages see the
 * <a href="http://google-code-prettify.googlecode.com/svn/trunk/README.html#langs">README</a>
 * file that came with this source.  At a minimum, the lexer should work on a
 * number of languages including C and friends, Java, Python, Bash, SQL, HTML,
 * XML, CSS, Javascript, and Makefiles.  It works passably on Ruby, PHP and Awk
 * and a subset of Perl, but, because of commenting conventions, doesn't work on
 * Smalltalk, Lisp-like, or CAML-like languages without an explicit lang class.
 * <p>
 * Usage: <ol>
 * <li> include this source file in an html page via
 *   {@code <script type="text/javascript" src="/path/to/prettify.js"></script>}
 * <li> define style rules.  See the example page for examples.
 * <li> mark the {@code <pre>} and {@code <code>} tags in your source with
 *    {@code class=prettyprint.}
 *    You can also use the (html deprecated) {@code <xmp>} tag, but the pretty
 *    printer needs to do more substantial DOM manipulations to support that, so
 *    some css styles may not be preserved.
 * </ol>
 * That's it.  I wanted to keep the API as simple as possible, so there's no
 * need to specify which language the code is in, but if you wish, you can add
 * another class to the {@code <pre>} or {@code <code>} element to specify the
 * language, as in {@code <pre class="prettyprint lang-java">}.  Any class that
 * starts with "lang-" followed by a file extension, specifies the file type.
 * See the "lang-*.js" files in this directory for code that implements
 * per-language file handlers.
 * <p>
 * Change log:<br>
 * cbeust, 2006/08/22
 * <blockquote>
 *   Java annotations (start with "@") are now captured as literals ("lit")
 * </blockquote>
 * @requires console
 */

// JSLint declarations
/*global console, document, navigator, setTimeout, window, define */

/** @define {boolean} */
var IN_GLOBAL_SCOPE = true;

/**
 * Split {@code prettyPrint} into multiple timeouts so as not to interfere with
 * UI events.
 * If set to {@code false}, {@code prettyPrint()} is synchronous.
 */
window['PR_SHOULD_USE_CONTINUATION'] = true;

/**
 * Pretty print a chunk of code.
 * @param {string} sourceCodeHtml The HTML to pretty print.
 * @param {string} opt_langExtension The language name to use.
 *     Typically, a filename extension like 'cpp' or 'java'.
 * @param {number|boolean} opt_numberLines True to number lines,
 *     or the 1-indexed number of the first line in sourceCodeHtml.
 * @return {string} code as html, but prettier
 */
var prettyPrintOne;
/**
 * Find all the {@code <pre>} and {@code <code>} tags in the DOM with
 * {@code class=prettyprint} and prettify them.
 *
 * @param {Function} opt_whenDone called when prettifying is done.
 * @param {HTMLElement|HTMLDocument} opt_root an element or document
 *   containing all the elements to pretty print.
 *   Defaults to {@code document.body}.
 */
var prettyPrint;


(function () {
  var win = window;
  // Keyword lists for various languages.
  // We use things that coerce to strings to make them compact when minified
  // and to defeat aggressive optimizers that fold large string constants.
  var FLOW_CONTROL_KEYWORDS = ["break,continue,do,else,for,if,return,while"];
  var C_KEYWORDS = [FLOW_CONTROL_KEYWORDS,"auto,case,char,const,default," + 
      "double,enum,extern,float,goto,inline,int,long,register,short,signed," +
      "sizeof,static,struct,switch,typedef,union,unsigned,void,volatile"];
  var COMMON_KEYWORDS = [C_KEYWORDS,"catch,class,delete,false,import," +
      "new,operator,private,protected,public,this,throw,true,try,typeof"];
  var CPP_KEYWORDS = [COMMON_KEYWORDS,"alignof,align_union,asm,axiom,bool," +
      "concept,concept_map,const_cast,constexpr,decltype,delegate," +
      "dynamic_cast,explicit,export,friend,generic,late_check," +
      "mutable,namespace,nullptr,property,reinterpret_cast,static_assert," +
      "static_cast,template,typeid,typename,using,virtual,where"];
  var JAVA_KEYWORDS = [COMMON_KEYWORDS,
      "abstract,assert,boolean,byte,extends,final,finally,implements,import," +
      "instanceof,interface,null,native,package,strictfp,super,synchronized," +
      "throws,transient"];
  var CSHARP_KEYWORDS = [JAVA_KEYWORDS,
      "as,base,by,checked,decimal,delegate,descending,dynamic,event," +
      "fixed,foreach,from,group,implicit,in,internal,into,is,let," +
      "lock,object,out,override,orderby,params,partial,readonly,ref,sbyte," +
      "sealed,stackalloc,string,select,uint,ulong,unchecked,unsafe,ushort," +
      "var,virtual,where"];
  var COFFEE_KEYWORDS = "all,and,by,catch,class,else,extends,false,finally," +
      "for,if,in,is,isnt,loop,new,no,not,null,of,off,on,or,return,super,then," +
      "throw,true,try,unless,until,when,while,yes";
  var JSCRIPT_KEYWORDS = [COMMON_KEYWORDS,
      "debugger,eval,export,function,get,null,set,undefined,var,with," +
      "Infinity,NaN"];
  var PERL_KEYWORDS = "caller,delete,die,do,dump,elsif,eval,exit,foreach,for," +
      "goto,if,import,last,local,my,next,no,our,print,package,redo,require," +
      "sub,undef,unless,until,use,wantarray,while,BEGIN,END";
  var PYTHON_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "and,as,assert,class,def,del," +
      "elif,except,exec,finally,from,global,import,in,is,lambda," +
      "nonlocal,not,or,pass,print,raise,try,with,yield," +
      "False,True,None"];
  var RUBY_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "alias,and,begin,case,class," +
      "def,defined,elsif,end,ensure,false,in,module,next,nil,not,or,redo," +
      "rescue,retry,self,super,then,true,undef,unless,until,when,yield," +
      "BEGIN,END"];
   var RUST_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "as,assert,const,copy,drop," +
      "enum,extern,fail,false,fn,impl,let,log,loop,match,mod,move,mut,priv," +
      "pub,pure,ref,self,static,struct,true,trait,type,unsafe,use"];
  var SH_KEYWORDS = [FLOW_CONTROL_KEYWORDS, "case,done,elif,esac,eval,fi," +
      "function,in,local,set,then,until"];
  var ALL_KEYWORDS = [
      CPP_KEYWORDS, CSHARP_KEYWORDS, JSCRIPT_KEYWORDS, PERL_KEYWORDS,
      PYTHON_KEYWORDS, RUBY_KEYWORDS, SH_KEYWORDS];
  var C_TYPES = /^(DIR|FILE|vector|(de|priority_)?queue|list|stack|(const_)?iterator|(multi)?(set|map)|bitset|u?(int|float)\d*)\b/;

  // token style names.  correspond to css classes
  /**
   * token style for a string literal
   * @const
   */
  var PR_STRING = 'str';
  /**
   * token style for a keyword
   * @const
   */
  var PR_KEYWORD = 'kwd';
  /**
   * token style for a comment
   * @const
   */
  var PR_COMMENT = 'com';
  /**
   * token style for a type
   * @const
   */
  var PR_TYPE = 'typ';
  /**
   * token style for a literal value.  e.g. 1, null, true.
   * @const
   */
  var PR_LITERAL = 'lit';
  /**
   * token style for a punctuation string.
   * @const
   */
  var PR_PUNCTUATION = 'pun';
  /**
   * token style for plain text.
   * @const
   */
  var PR_PLAIN = 'pln';

  /**
   * token style for an sgml tag.
   * @const
   */
  var PR_TAG = 'tag';
  /**
   * token style for a markup declaration such as a DOCTYPE.
   * @const
   */
  var PR_DECLARATION = 'dec';
  /**
   * token style for embedded source.
   * @const
   */
  var PR_SOURCE = 'src';
  /**
   * token style for an sgml attribute name.
   * @const
   */
  var PR_ATTRIB_NAME = 'atn';
  /**
   * token style for an sgml attribute value.
   * @const
   */
  var PR_ATTRIB_VALUE = 'atv';

  /**
   * A class that indicates a section of markup that is not code, e.g. to allow
   * embedding of line numbers within code listings.
   * @const
   */
  var PR_NOCODE = 'nocode';

  
  
  /**
   * A set of tokens that can precede a regular expression literal in
   * javascript
   * http://web.archive.org/web/20070717142515/http://www.mozilla.org/js/language/js20/rationale/syntax.html
   * has the full list, but I've removed ones that might be problematic when
   * seen in languages that don't support regular expression literals.
   *
   * <p>Specifically, I've removed any keywords that can't precede a regexp
   * literal in a syntactically legal javascript program, and I've removed the
   * "in" keyword since it's not a keyword in many languages, and might be used
   * as a count of inches.
   *
   * <p>The link above does not accurately describe EcmaScript rules since
   * it fails to distinguish between (a=++/b/i) and (a++/b/i) but it works
   * very well in practice.
   *
   * @private
   * @const
   */
  var REGEXP_PRECEDER_PATTERN = '(?:^^\\.?|[+-]|[!=]=?=?|\\#|%=?|&&?=?|\\(|\\*=?|[+\\-]=|->|\\/=?|::?|<<?=?|>>?>?=?|,|;|\\?|@|\\[|~|{|\\^\\^?=?|\\|\\|?=?|break|case|continue|delete|do|else|finally|instanceof|return|throw|try|typeof)\\s*';
  
  // CAVEAT: this does not properly handle the case where a regular
  // expression immediately follows another since a regular expression may
  // have flags for case-sensitivity and the like.  Having regexp tokens
  // adjacent is not valid in any language I'm aware of, so I'm punting.
  // TODO: maybe style special characters inside a regexp as punctuation.

  /**
   * Given a group of {@link RegExp}s, returns a {@code RegExp} that globally
   * matches the union of the sets of strings matched by the input RegExp.
   * Since it matches globally, if the input strings have a start-of-input
   * anchor (/^.../), it is ignored for the purposes of unioning.
   * @param {Array.<RegExp>} regexs non multiline, non-global regexs.
   * @return {RegExp} a global regex.
   */
  function combinePrefixPatterns(regexs) {
    var capturedGroupIndex = 0;
  
    var needToFoldCase = false;
    var ignoreCase = false;
    for (var i = 0, n = regexs.length; i < n; ++i) {
      var regex = regexs[i];
      if (regex.ignoreCase) {
        ignoreCase = true;
      } else if (/[a-z]/i.test(regex.source.replace(
                     /\\u[0-9a-f]{4}|\\x[0-9a-f]{2}|\\[^ux]/gi, ''))) {
        needToFoldCase = true;
        ignoreCase = false;
        break;
      }
    }
  
    var escapeCharToCodeUnit = {
      'b': 8,
      't': 9,
      'n': 0xa,
      'v': 0xb,
      'f': 0xc,
      'r': 0xd
    };
  
    function decodeEscape(charsetPart) {
      var cc0 = charsetPart.charCodeAt(0);
      if (cc0 !== 92 /* \\ */) {
        return cc0;
      }
      var c1 = charsetPart.charAt(1);
      cc0 = escapeCharToCodeUnit[c1];
      if (cc0) {
        return cc0;
      } else if ('0' <= c1 && c1 <= '7') {
        return parseInt(charsetPart.substring(1), 8);
      } else if (c1 === 'u' || c1 === 'x') {
        return parseInt(charsetPart.substring(2), 16);
      } else {
        return charsetPart.charCodeAt(1);
      }
    }
  
    function encodeEscape(charCode) {
      if (charCode < 0x20) {
        return (charCode < 0x10 ? '\\x0' : '\\x') + charCode.toString(16);
      }
      var ch = String.fromCharCode(charCode);
      return (ch === '\\' || ch === '-' || ch === ']' || ch === '^')
          ? "\\" + ch : ch;
    }
  
    function caseFoldCharset(charSet) {
      var charsetParts = charSet.substring(1, charSet.length - 1).match(
          new RegExp(
              '\\\\u[0-9A-Fa-f]{4}'
              + '|\\\\x[0-9A-Fa-f]{2}'
              + '|\\\\[0-3][0-7]{0,2}'
              + '|\\\\[0-7]{1,2}'
              + '|\\\\[\\s\\S]'
              + '|-'
              + '|[^-\\\\]',
              'g'));
      var ranges = [];
      var inverse = charsetParts[0] === '^';
  
      var out = ['['];
      if (inverse) { out.push('^'); }
  
      for (var i = inverse ? 1 : 0, n = charsetParts.length; i < n; ++i) {
        var p = charsetParts[i];
        if (/\\[bdsw]/i.test(p)) {  // Don't muck with named groups.
          out.push(p);
        } else {
          var start = decodeEscape(p);
          var end;
          if (i + 2 < n && '-' === charsetParts[i + 1]) {
            end = decodeEscape(charsetParts[i + 2]);
            i += 2;
          } else {
            end = start;
          }
          ranges.push([start, end]);
          // If the range might intersect letters, then expand it.
          // This case handling is too simplistic.
          // It does not deal with non-latin case folding.
          // It works for latin source code identifiers though.
          if (!(end < 65 || start > 122)) {
            if (!(end < 65 || start > 90)) {
              ranges.push([Math.max(65, start) | 32, Math.min(end, 90) | 32]);
            }
            if (!(end < 97 || start > 122)) {
              ranges.push([Math.max(97, start) & ~32, Math.min(end, 122) & ~32]);
            }
          }
        }
      }
  
      // [[1, 10], [3, 4], [8, 12], [14, 14], [16, 16], [17, 17]]
      // -> [[1, 12], [14, 14], [16, 17]]
      ranges.sort(function (a, b) { return (a[0] - b[0]) || (b[1]  - a[1]); });
      var consolidatedRanges = [];
      var lastRange = [];
      for (var i = 0; i < ranges.length; ++i) {
        var range = ranges[i];
        if (range[0] <= lastRange[1] + 1) {
          lastRange[1] = Math.max(lastRange[1], range[1]);
        } else {
          consolidatedRanges.push(lastRange = range);
        }
      }
  
      for (var i = 0; i < consolidatedRanges.length; ++i) {
        var range = consolidatedRanges[i];
        out.push(encodeEscape(range[0]));
        if (range[1] > range[0]) {
          if (range[1] + 1 > range[0]) { out.push('-'); }
          out.push(encodeEscape(range[1]));
        }
      }
      out.push(']');
      return out.join('');
    }
  
    function allowAnywhereFoldCaseAndRenumberGroups(regex) {
      // Split into character sets, escape sequences, punctuation strings
      // like ('(', '(?:', ')', '^'), and runs of characters that do not
      // include any of the above.
      var parts = regex.source.match(
          new RegExp(
              '(?:'
              + '\\[(?:[^\\x5C\\x5D]|\\\\[\\s\\S])*\\]'  // a character set
              + '|\\\\u[A-Fa-f0-9]{4}'  // a unicode escape
              + '|\\\\x[A-Fa-f0-9]{2}'  // a hex escape
              + '|\\\\[0-9]+'  // a back-reference or octal escape
              + '|\\\\[^ux0-9]'  // other escape sequence
              + '|\\(\\?[:!=]'  // start of a non-capturing group
              + '|[\\(\\)\\^]'  // start/end of a group, or line start
              + '|[^\\x5B\\x5C\\(\\)\\^]+'  // run of other characters
              + ')',
              'g'));
      var n = parts.length;
  
      // Maps captured group numbers to the number they will occupy in
      // the output or to -1 if that has not been determined, or to
      // undefined if they need not be capturing in the output.
      var capturedGroups = [];
  
      // Walk over and identify back references to build the capturedGroups
      // mapping.
      for (var i = 0, groupIndex = 0; i < n; ++i) {
        var p = parts[i];
        if (p === '(') {
          // groups are 1-indexed, so max group index is count of '('
          ++groupIndex;
        } else if ('\\' === p.charAt(0)) {
          var decimalValue = +p.substring(1);
          if (decimalValue) {
            if (decimalValue <= groupIndex) {
              capturedGroups[decimalValue] = -1;
            } else {
              // Replace with an unambiguous escape sequence so that
              // an octal escape sequence does not turn into a backreference
              // to a capturing group from an earlier regex.
              parts[i] = encodeEscape(decimalValue);
            }
          }
        }
      }
  
      // Renumber groups and reduce capturing groups to non-capturing groups
      // where possible.
      for (var i = 1; i < capturedGroups.length; ++i) {
        if (-1 === capturedGroups[i]) {
          capturedGroups[i] = ++capturedGroupIndex;
        }
      }
      for (var i = 0, groupIndex = 0; i < n; ++i) {
        var p = parts[i];
        if (p === '(') {
          ++groupIndex;
          if (!capturedGroups[groupIndex]) {
            parts[i] = '(?:';
          }
        } else if ('\\' === p.charAt(0)) {
          var decimalValue = +p.substring(1);
          if (decimalValue && decimalValue <= groupIndex) {
            parts[i] = '\\' + capturedGroups[decimalValue];
          }
        }
      }
  
      // Remove any prefix anchors so that the output will match anywhere.
      // ^^ really does mean an anchored match though.
      for (var i = 0; i < n; ++i) {
        if ('^' === parts[i] && '^' !== parts[i + 1]) { parts[i] = ''; }
      }
  
      // Expand letters to groups to handle mixing of case-sensitive and
      // case-insensitive patterns if necessary.
      if (regex.ignoreCase && needToFoldCase) {
        for (var i = 0; i < n; ++i) {
          var p = parts[i];
          var ch0 = p.charAt(0);
          if (p.length >= 2 && ch0 === '[') {
            parts[i] = caseFoldCharset(p);
          } else if (ch0 !== '\\') {
            // TODO: handle letters in numeric escapes.
            parts[i] = p.replace(
                /[a-zA-Z]/g,
                function (ch) {
                  var cc = ch.charCodeAt(0);
                  return '[' + String.fromCharCode(cc & ~32, cc | 32) + ']';
                });
          }
        }
      }
  
      return parts.join('');
    }
  
    var rewritten = [];
    for (var i = 0, n = regexs.length; i < n; ++i) {
      var regex = regexs[i];
      if (regex.global || regex.multiline) { throw new Error('' + regex); }
      rewritten.push(
          '(?:' + allowAnywhereFoldCaseAndRenumberGroups(regex) + ')');
    }
  
    return new RegExp(rewritten.join('|'), ignoreCase ? 'gi' : 'g');
  }

  /**
   * Split markup into a string of source code and an array mapping ranges in
   * that string to the text nodes in which they appear.
   *
   * <p>
   * The HTML DOM structure:</p>
   * <pre>
   * (Element   "p"
   *   (Element "b"
   *     (Text  "print "))       ; #1
   *   (Text    "'Hello '")      ; #2
   *   (Element "br")            ; #3
   *   (Text    "  + 'World';")) ; #4
   * </pre>
   * <p>
   * corresponds to the HTML
   * {@code <p><b>print </b>'Hello '<br>  + 'World';</p>}.</p>
   *
   * <p>
   * It will produce the output:</p>
   * <pre>
   * {
   *   sourceCode: "print 'Hello '\n  + 'World';",
   *   //                     1          2
   *   //           012345678901234 5678901234567
   *   spans: [0, #1, 6, #2, 14, #3, 15, #4]
   * }
   * </pre>
   * <p>
   * where #1 is a reference to the {@code "print "} text node above, and so
   * on for the other text nodes.
   * </p>
   *
   * <p>
   * The {@code} spans array is an array of pairs.  Even elements are the start
   * indices of substrings, and odd elements are the text nodes (or BR elements)
   * that contain the text for those substrings.
   * Substrings continue until the next index or the end of the source.
   * </p>
   *
   * @param {Node} node an HTML DOM subtree containing source-code.
   * @param {boolean} isPreformatted true if white-space in text nodes should
   *    be considered significant.
   * @return {Object} source code and the text nodes in which they occur.
   */
  function extractSourceSpans(node, isPreformatted) {
    var nocode = /(?:^|\s)nocode(?:\s|$)/;
  
    var chunks = [];
    var length = 0;
    var spans = [];
    var k = 0;
  
    function walk(node) {
      var type = node.nodeType;
      if (type == 1) {  // Element
        if (nocode.test(node.className)) { return; }
        for (var child = node.firstChild; child; child = child.nextSibling) {
          walk(child);
        }
        var nodeName = node.nodeName.toLowerCase();
        if ('br' === nodeName || 'li' === nodeName) {
          chunks[k] = '\n';
          spans[k << 1] = length++;
          spans[(k++ << 1) | 1] = node;
        }
      } else if (type == 3 || type == 4) {  // Text
        var text = node.nodeValue;
        if (text.length) {
          if (!isPreformatted) {
            text = text.replace(/[ \t\r\n]+/g, ' ');
          } else {
            text = text.replace(/\r\n?/g, '\n');  // Normalize newlines.
          }
          // TODO: handle tabs here?
          chunks[k] = text;
          spans[k << 1] = length;
          length += text.length;
          spans[(k++ << 1) | 1] = node;
        }
      }
    }
  
    walk(node);
  
    return {
      sourceCode: chunks.join('').replace(/\n$/, ''),
      spans: spans
    };
  }

  /**
   * Apply the given language handler to sourceCode and add the resulting
   * decorations to out.
   * @param {number} basePos the index of sourceCode within the chunk of source
   *    whose decorations are already present on out.
   */
  function appendDecorations(basePos, sourceCode, langHandler, out) {
    if (!sourceCode) { return; }
    var job = {
      sourceCode: sourceCode,
      basePos: basePos
    };
    langHandler(job);
    out.push.apply(out, job.decorations);
  }

  var notWs = /\S/;

  /**
   * Given an element, if it contains only one child element and any text nodes
   * it contains contain only space characters, return the sole child element.
   * Otherwise returns undefined.
   * <p>
   * This is meant to return the CODE element in {@code <pre><code ...>} when
   * there is a single child element that contains all the non-space textual
   * content, but not to return anything where there are multiple child elements
   * as in {@code <pre><code>...</code><code>...</code></pre>} or when there
   * is textual content.
   */
  function childContentWrapper(element) {
    var wrapper = undefined;
    for (var c = element.firstChild; c; c = c.nextSibling) {
      var type = c.nodeType;
      wrapper = (type === 1)  // Element Node
          ? (wrapper ? element : c)
          : (type === 3)  // Text Node
          ? (notWs.test(c.nodeValue) ? element : wrapper)
          : wrapper;
    }
    return wrapper === element ? undefined : wrapper;
  }

  /** Given triples of [style, pattern, context] returns a lexing function,
    * The lexing function interprets the patterns to find token boundaries and
    * returns a decoration list of the form
    * [index_0, style_0, index_1, style_1, ..., index_n, style_n]
    * where index_n is an index into the sourceCode, and style_n is a style
    * constant like PR_PLAIN.  index_n-1 <= index_n, and style_n-1 applies to
    * all characters in sourceCode[index_n-1:index_n].
    *
    * The stylePatterns is a list whose elements have the form
    * [style : string, pattern : RegExp, DEPRECATED, shortcut : string].
    *
    * Style is a style constant like PR_PLAIN, or can be a string of the
    * form 'lang-FOO', where FOO is a language extension describing the
    * language of the portion of the token in $1 after pattern executes.
    * E.g., if style is 'lang-lisp', and group 1 contains the text
    * '(hello (world))', then that portion of the token will be passed to the
    * registered lisp handler for formatting.
    * The text before and after group 1 will be restyled using this decorator
    * so decorators should take care that this doesn't result in infinite
    * recursion.  For example, the HTML lexer rule for SCRIPT elements looks
    * something like ['lang-js', /<[s]cript>(.+?)<\/script>/].  This may match
    * '<script>foo()<\/script>', which would cause the current decorator to
    * be called with '<script>' which would not match the same rule since
    * group 1 must not be empty, so it would be instead styled as PR_TAG by
    * the generic tag rule.  The handler registered for the 'js' extension would
    * then be called with 'foo()', and finally, the current decorator would
    * be called with '<\/script>' which would not match the original rule and
    * so the generic tag rule would identify it as a tag.
    *
    * Pattern must only match prefixes, and if it matches a prefix, then that
    * match is considered a token with the same style.
    *
    * Context is applied to the last non-whitespace, non-comment token
    * recognized.
    *
    * Shortcut is an optional string of characters, any of which, if the first
    * character, gurantee that this pattern and only this pattern matches.
    *
    * @param {Array} shortcutStylePatterns patterns that always start with
    *   a known character.  Must have a shortcut string.
    * @param {Array} fallthroughStylePatterns patterns that will be tried in
    *   order if the shortcut ones fail.  May have shortcuts.
    *
    * @return {function (Object)} a
    *   function that takes source code and returns a list of decorations.
    */
  function createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns) {
    var shortcuts = {};
    var tokenizer;
    (function () {
      var allPatterns = shortcutStylePatterns.concat(fallthroughStylePatterns);
      var allRegexs = [];
      var regexKeys = {};
      for (var i = 0, n = allPatterns.length; i < n; ++i) {
        var patternParts = allPatterns[i];
        var shortcutChars = patternParts[3];
        if (shortcutChars) {
          for (var c = shortcutChars.length; --c >= 0;) {
            shortcuts[shortcutChars.charAt(c)] = patternParts;
          }
        }
        var regex = patternParts[1];
        var k = '' + regex;
        if (!regexKeys.hasOwnProperty(k)) {
          allRegexs.push(regex);
          regexKeys[k] = null;
        }
      }
      allRegexs.push(/[\0-\uffff]/);
      tokenizer = combinePrefixPatterns(allRegexs);
    })();

    var nPatterns = fallthroughStylePatterns.length;

    /**
     * Lexes job.sourceCode and produces an output array job.decorations of
     * style classes preceded by the position at which they start in
     * job.sourceCode in order.
     *
     * @param {Object} job an object like <pre>{
     *    sourceCode: {string} sourceText plain text,
     *    basePos: {int} position of job.sourceCode in the larger chunk of
     *        sourceCode.
     * }</pre>
     */
    var decorate = function (job) {
      var sourceCode = job.sourceCode, basePos = job.basePos;
      /** Even entries are positions in source in ascending order.  Odd enties
        * are style markers (e.g., PR_COMMENT) that run from that position until
        * the end.
        * @type {Array.<number|string>}
        */
      var decorations = [basePos, PR_PLAIN];
      var pos = 0;  // index into sourceCode
      var tokens = sourceCode.match(tokenizer) || [];
      var styleCache = {};

      for (var ti = 0, nTokens = tokens.length; ti < nTokens; ++ti) {
        var token = tokens[ti];
        var style = styleCache[token];
        var match = void 0;

        var isEmbedded;
        if (typeof style === 'string') {
          isEmbedded = false;
        } else {
          var patternParts = shortcuts[token.charAt(0)];
          if (patternParts) {
            match = token.match(patternParts[1]);
            style = patternParts[0];
          } else {
            for (var i = 0; i < nPatterns; ++i) {
              patternParts = fallthroughStylePatterns[i];
              match = token.match(patternParts[1]);
              if (match) {
                style = patternParts[0];
                break;
              }
            }

            if (!match) {  // make sure that we make progress
              style = PR_PLAIN;
            }
          }

          isEmbedded = style.length >= 5 && 'lang-' === style.substring(0, 5);
          if (isEmbedded && !(match && typeof match[1] === 'string')) {
            isEmbedded = false;
            style = PR_SOURCE;
          }

          if (!isEmbedded) { styleCache[token] = style; }
        }

        var tokenStart = pos;
        pos += token.length;

        if (!isEmbedded) {
          decorations.push(basePos + tokenStart, style);
        } else {  // Treat group 1 as an embedded block of source code.
          var embeddedSource = match[1];
          var embeddedSourceStart = token.indexOf(embeddedSource);
          var embeddedSourceEnd = embeddedSourceStart + embeddedSource.length;
          if (match[2]) {
            // If embeddedSource can be blank, then it would match at the
            // beginning which would cause us to infinitely recurse on the
            // entire token, so we catch the right context in match[2].
            embeddedSourceEnd = token.length - match[2].length;
            embeddedSourceStart = embeddedSourceEnd - embeddedSource.length;
          }
          var lang = style.substring(5);
          // Decorate the left of the embedded source
          appendDecorations(
              basePos + tokenStart,
              token.substring(0, embeddedSourceStart),
              decorate, decorations);
          // Decorate the embedded source
          appendDecorations(
              basePos + tokenStart + embeddedSourceStart,
              embeddedSource,
              langHandlerForExtension(lang, embeddedSource),
              decorations);
          // Decorate the right of the embedded section
          appendDecorations(
              basePos + tokenStart + embeddedSourceEnd,
              token.substring(embeddedSourceEnd),
              decorate, decorations);
        }
      }
      job.decorations = decorations;
    };
    return decorate;
  }

  /** returns a function that produces a list of decorations from source text.
    *
    * This code treats ", ', and ` as string delimiters, and \ as a string
    * escape.  It does not recognize perl's qq() style strings.
    * It has no special handling for double delimiter escapes as in basic, or
    * the tripled delimiters used in python, but should work on those regardless
    * although in those cases a single string literal may be broken up into
    * multiple adjacent string literals.
    *
    * It recognizes C, C++, and shell style comments.
    *
    * @param {Object} options a set of optional parameters.
    * @return {function (Object)} a function that examines the source code
    *     in the input job and builds the decoration list.
    */
  function sourceDecorator(options) {
    var shortcutStylePatterns = [], fallthroughStylePatterns = [];
    if (options['tripleQuotedStrings']) {
      // '''multi-line-string''', 'single-line-string', and double-quoted
      shortcutStylePatterns.push(
          [PR_STRING,  /^(?:\'\'\'(?:[^\'\\]|\\[\s\S]|\'{1,2}(?=[^\']))*(?:\'\'\'|$)|\"\"\"(?:[^\"\\]|\\[\s\S]|\"{1,2}(?=[^\"]))*(?:\"\"\"|$)|\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$))/,
           null, '\'"']);
    } else if (options['multiLineStrings']) {
      // 'multi-line-string', "multi-line-string"
      shortcutStylePatterns.push(
          [PR_STRING,  /^(?:\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$)|\`(?:[^\\\`]|\\[\s\S])*(?:\`|$))/,
           null, '\'"`']);
    } else {
      // 'single-line-string', "single-line-string"
      shortcutStylePatterns.push(
          [PR_STRING,
           /^(?:\'(?:[^\\\'\r\n]|\\.)*(?:\'|$)|\"(?:[^\\\"\r\n]|\\.)*(?:\"|$))/,
           null, '"\'']);
    }
    if (options['verbatimStrings']) {
      // verbatim-string-literal production from the C# grammar.  See issue 93.
      fallthroughStylePatterns.push(
          [PR_STRING, /^@\"(?:[^\"]|\"\")*(?:\"|$)/, null]);
    }
    var hc = options['hashComments'];
    if (hc) {
      if (options['cStyleComments']) {
        if (hc > 1) {  // multiline hash comments
          shortcutStylePatterns.push(
              [PR_COMMENT, /^#(?:##(?:[^#]|#(?!##))*(?:###|$)|.*)/, null, '#']);
        } else {
          // Stop C preprocessor declarations at an unclosed open comment
          shortcutStylePatterns.push(
              [PR_COMMENT, /^#(?:(?:define|e(?:l|nd)if|else|error|ifn?def|include|line|pragma|undef|warning)\b|[^\r\n]*)/,
               null, '#']);
        }
        // #include <stdio.h>
        fallthroughStylePatterns.push(
            [PR_STRING,
             /^<(?:(?:(?:\.\.\/)*|\/?)(?:[\w-]+(?:\/[\w-]+)+)?[\w-]+\.h(?:h|pp|\+\+)?|[a-z]\w*)>/,
             null]);
      } else {
        shortcutStylePatterns.push([PR_COMMENT, /^#[^\r\n]*/, null, '#']);
      }
    }
    if (options['cStyleComments']) {
      fallthroughStylePatterns.push([PR_COMMENT, /^\/\/[^\r\n]*/, null]);
      fallthroughStylePatterns.push(
          [PR_COMMENT, /^\/\*[\s\S]*?(?:\*\/|$)/, null]);
    }
    var regexLiterals = options['regexLiterals'];
    if (regexLiterals) {
      /**
       * @const
       */
      var regexExcls = regexLiterals > 1
        ? ''  // Multiline regex literals
        : '\n\r';
      /**
       * @const
       */
      var regexAny = regexExcls ? '.' : '[\\S\\s]';
      /**
       * @const
       */
      var REGEX_LITERAL = (
          // A regular expression literal starts with a slash that is
          // not followed by * or / so that it is not confused with
          // comments.
          '/(?=[^/*' + regexExcls + '])'
          // and then contains any number of raw characters,
          + '(?:[^/\\x5B\\x5C' + regexExcls + ']'
          // escape sequences (\x5C),
          +    '|\\x5C' + regexAny
          // or non-nesting character sets (\x5B\x5D);
          +    '|\\x5B(?:[^\\x5C\\x5D' + regexExcls + ']'
          +             '|\\x5C' + regexAny + ')*(?:\\x5D|$))+'
          // finally closed by a /.
          + '/');
      fallthroughStylePatterns.push(
          ['lang-regex',
           RegExp('^' + REGEXP_PRECEDER_PATTERN + '(' + REGEX_LITERAL + ')')
           ]);
    }

    var types = options['types'];
    if (types) {
      fallthroughStylePatterns.push([PR_TYPE, types]);
    }

    var keywords = ("" + options['keywords']).replace(/^ | $/g, '');
    if (keywords.length) {
      fallthroughStylePatterns.push(
          [PR_KEYWORD,
           new RegExp('^(?:' + keywords.replace(/[\s,]+/g, '|') + ')\\b'),
           null]);
    }

    shortcutStylePatterns.push([PR_PLAIN,       /^\s+/, null, ' \r\n\t\xA0']);

    var punctuation =
      // The Bash man page says

      // A word is a sequence of characters considered as a single
      // unit by GRUB. Words are separated by metacharacters,
      // which are the following plus space, tab, and newline: { }
      // | & $ ; < >
      // ...
      
      // A word beginning with # causes that word and all remaining
      // characters on that line to be ignored.

      // which means that only a '#' after /(?:^|[{}|&$;<>\s])/ starts a
      // comment but empirically
      // $ echo {#}
      // {#}
      // $ echo \$#
      // $#
      // $ echo }#
      // }#

      // so /(?:^|[|&;<>\s])/ is more appropriate.

      // http://gcc.gnu.org/onlinedocs/gcc-2.95.3/cpp_1.html#SEC3
      // suggests that this definition is compatible with a
      // default mode that tries to use a single token definition
      // to recognize both bash/python style comments and C
      // preprocessor directives.

      // This definition of punctuation does not include # in the list of
      // follow-on exclusions, so # will not be broken before if preceeded
      // by a punctuation character.  We could try to exclude # after
      // [|&;<>] but that doesn't seem to cause many major problems.
      // If that does turn out to be a problem, we should change the below
      // when hc is truthy to include # in the run of punctuation characters
      // only when not followint [|&;<>].
      '^.[^\\s\\w.$@\'"`/\\\\]*';
    if (options['regexLiterals']) {
      punctuation += '(?!\s*\/)';
    }

    fallthroughStylePatterns.push(
        // TODO(mikesamuel): recognize non-latin letters and numerals in idents
        [PR_LITERAL,     /^@[a-z_$][a-z_$@0-9]*/i, null],
        [PR_TYPE,        /^(?:[@_]?[A-Z]+[a-z][A-Za-z_$@0-9]*|\w+_t\b)/, null],
        [PR_PLAIN,       /^[a-z_$][a-z_$@0-9]*/i, null],
        [PR_LITERAL,
         new RegExp(
             '^(?:'
             // A hex number
             + '0x[a-f0-9]+'
             // or an octal or decimal number,
             + '|(?:\\d(?:_\\d+)*\\d*(?:\\.\\d*)?|\\.\\d\\+)'
             // possibly in scientific notation
             + '(?:e[+\\-]?\\d+)?'
             + ')'
             // with an optional modifier like UL for unsigned long
             + '[a-z]*', 'i'),
         null, '0123456789'],
        // Don't treat escaped quotes in bash as starting strings.
        // See issue 144.
        [PR_PLAIN,       /^\\[\s\S]?/, null],
        [PR_PUNCTUATION, new RegExp(punctuation), null]);

    return createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns);
  }

  var decorateSource = sourceDecorator({
        'keywords': ALL_KEYWORDS,
        'hashComments': true,
        'cStyleComments': true,
        'multiLineStrings': true,
        'regexLiterals': true
      });

  /**
   * Given a DOM subtree, wraps it in a list, and puts each line into its own
   * list item.
   *
   * @param {Node} node modified in place.  Its content is pulled into an
   *     HTMLOListElement, and each line is moved into a separate list item.
   *     This requires cloning elements, so the input might not have unique
   *     IDs after numbering.
   * @param {boolean} isPreformatted true iff white-space in text nodes should
   *     be treated as significant.
   */
  function numberLines(node, opt_startLineNum, isPreformatted) {
    var nocode = /(?:^|\s)nocode(?:\s|$)/;
    var lineBreak = /\r\n?|\n/;
  
    var document = node.ownerDocument;
  
    var li = document.createElement('li');
    while (node.firstChild) {
      li.appendChild(node.firstChild);
    }
    // An array of lines.  We split below, so this is initialized to one
    // un-split line.
    var listItems = [li];
  
    function walk(node) {
      var type = node.nodeType;
      if (type == 1 && !nocode.test(node.className)) {  // Element
        if ('br' === node.nodeName) {
          breakAfter(node);
          // Discard the <BR> since it is now flush against a </LI>.
          if (node.parentNode) {
            node.parentNode.removeChild(node);
          }
        } else {
          for (var child = node.firstChild; child; child = child.nextSibling) {
            walk(child);
          }
        }
      } else if ((type == 3 || type == 4) && isPreformatted) {  // Text
        var text = node.nodeValue;
        var match = text.match(lineBreak);
        if (match) {
          var firstLine = text.substring(0, match.index);
          node.nodeValue = firstLine;
          var tail = text.substring(match.index + match[0].length);
          if (tail) {
            var parent = node.parentNode;
            parent.insertBefore(
              document.createTextNode(tail), node.nextSibling);
          }
          breakAfter(node);
          if (!firstLine) {
            // Don't leave blank text nodes in the DOM.
            node.parentNode.removeChild(node);
          }
        }
      }
    }
  
    // Split a line after the given node.
    function breakAfter(lineEndNode) {
      // If there's nothing to the right, then we can skip ending the line
      // here, and move root-wards since splitting just before an end-tag
      // would require us to create a bunch of empty copies.
      while (!lineEndNode.nextSibling) {
        lineEndNode = lineEndNode.parentNode;
        if (!lineEndNode) { return; }
      }
  
      function breakLeftOf(limit, copy) {
        // Clone shallowly if this node needs to be on both sides of the break.
        var rightSide = copy ? limit.cloneNode(false) : limit;
        var parent = limit.parentNode;
        if (parent) {
          // We clone the parent chain.
          // This helps us resurrect important styling elements that cross lines.
          // E.g. in <i>Foo<br>Bar</i>
          // should be rewritten to <li><i>Foo</i></li><li><i>Bar</i></li>.
          var parentClone = breakLeftOf(parent, 1);
          // Move the clone and everything to the right of the original
          // onto the cloned parent.
          var next = limit.nextSibling;
          parentClone.appendChild(rightSide);
          for (var sibling = next; sibling; sibling = next) {
            next = sibling.nextSibling;
            parentClone.appendChild(sibling);
          }
        }
        return rightSide;
      }
  
      var copiedListItem = breakLeftOf(lineEndNode.nextSibling, 0);
  
      // Walk the parent chain until we reach an unattached LI.
      for (var parent;
           // Check nodeType since IE invents document fragments.
           (parent = copiedListItem.parentNode) && parent.nodeType === 1;) {
        copiedListItem = parent;
      }
      // Put it on the list of lines for later processing.
      listItems.push(copiedListItem);
    }
  
    // Split lines while there are lines left to split.
    for (var i = 0;  // Number of lines that have been split so far.
         i < listItems.length;  // length updated by breakAfter calls.
         ++i) {
      walk(listItems[i]);
    }
  
    // Make sure numeric indices show correctly.
    if (opt_startLineNum === (opt_startLineNum|0)) {
      listItems[0].setAttribute('value', opt_startLineNum);
    }
  
    var ol = document.createElement('ol');
    ol.className = 'linenums';
    var offset = Math.max(0, ((opt_startLineNum - 1 /* zero index */)) | 0) || 0;
    for (var i = 0, n = listItems.length; i < n; ++i) {
      li = listItems[i];
      // Stick a class on the LIs so that stylesheets can
      // color odd/even rows, or any other row pattern that
      // is co-prime with 10.
      li.className = 'L' + ((i + offset) % 10);
      if (!li.firstChild) {
        li.appendChild(document.createTextNode('\xA0'));
      }
      ol.appendChild(li);
    }
  
    node.appendChild(ol);
  }
  /**
   * Breaks {@code job.sourceCode} around style boundaries in
   * {@code job.decorations} and modifies {@code job.sourceNode} in place.
   * @param {Object} job like <pre>{
   *    sourceCode: {string} source as plain text,
   *    sourceNode: {HTMLElement} the element containing the source,
   *    spans: {Array.<number|Node>} alternating span start indices into source
   *       and the text node or element (e.g. {@code <BR>}) corresponding to that
   *       span.
   *    decorations: {Array.<number|string} an array of style classes preceded
   *       by the position at which they start in job.sourceCode in order
   * }</pre>
   * @private
   */
  function recombineTagsAndDecorations(job) {
    var isIE8OrEarlier = /\bMSIE\s(\d+)/.exec(navigator.userAgent);
    isIE8OrEarlier = isIE8OrEarlier && +isIE8OrEarlier[1] <= 8;
    var newlineRe = /\n/g;
  
    var source = job.sourceCode;
    var sourceLength = source.length;
    // Index into source after the last code-unit recombined.
    var sourceIndex = 0;
  
    var spans = job.spans;
    var nSpans = spans.length;
    // Index into spans after the last span which ends at or before sourceIndex.
    var spanIndex = 0;
  
    var decorations = job.decorations;
    var nDecorations = decorations.length;
    // Index into decorations after the last decoration which ends at or before
    // sourceIndex.
    var decorationIndex = 0;
  
    // Remove all zero-length decorations.
    decorations[nDecorations] = sourceLength;
    var decPos, i;
    for (i = decPos = 0; i < nDecorations;) {
      if (decorations[i] !== decorations[i + 2]) {
        decorations[decPos++] = decorations[i++];
        decorations[decPos++] = decorations[i++];
      } else {
        i += 2;
      }
    }
    nDecorations = decPos;
  
    // Simplify decorations.
    for (i = decPos = 0; i < nDecorations;) {
      var startPos = decorations[i];
      // Conflate all adjacent decorations that use the same style.
      var startDec = decorations[i + 1];
      var end = i + 2;
      while (end + 2 <= nDecorations && decorations[end + 1] === startDec) {
        end += 2;
      }
      decorations[decPos++] = startPos;
      decorations[decPos++] = startDec;
      i = end;
    }
  
    nDecorations = decorations.length = decPos;
  
    var sourceNode = job.sourceNode;
    var oldDisplay;
    if (sourceNode) {
      oldDisplay = sourceNode.style.display;
      sourceNode.style.display = 'none';
    }
    try {
      var decoration = null;
      while (spanIndex < nSpans) {
        var spanStart = spans[spanIndex];
        var spanEnd = spans[spanIndex + 2] || sourceLength;
  
        var decEnd = decorations[decorationIndex + 2] || sourceLength;
  
        var end = Math.min(spanEnd, decEnd);
  
        var textNode = spans[spanIndex + 1];
        var styledText;
        if (textNode.nodeType !== 1  // Don't muck with <BR>s or <LI>s
            // Don't introduce spans around empty text nodes.
            && (styledText = source.substring(sourceIndex, end))) {
          // This may seem bizarre, and it is.  Emitting LF on IE causes the
          // code to display with spaces instead of line breaks.
          // Emitting Windows standard issue linebreaks (CRLF) causes a blank
          // space to appear at the beginning of every line but the first.
          // Emitting an old Mac OS 9 line separator makes everything spiffy.
          if (isIE8OrEarlier) {
            styledText = styledText.replace(newlineRe, '\r');
          }
          textNode.nodeValue = styledText;
          var document = textNode.ownerDocument;
          var span = document.createElement('span');
          span.className = decorations[decorationIndex + 1];
          var parentNode = textNode.parentNode;
          parentNode.replaceChild(span, textNode);
          span.appendChild(textNode);
          if (sourceIndex < spanEnd) {  // Split off a text node.
            spans[spanIndex + 1] = textNode
                // TODO: Possibly optimize by using '' if there's no flicker.
                = document.createTextNode(source.substring(end, spanEnd));
            parentNode.insertBefore(textNode, span.nextSibling);
          }
        }
  
        sourceIndex = end;
  
        if (sourceIndex >= spanEnd) {
          spanIndex += 2;
        }
        if (sourceIndex >= decEnd) {
          decorationIndex += 2;
        }
      }
    } finally {
      if (sourceNode) {
        sourceNode.style.display = oldDisplay;
      }
    }
  }

  /** Maps language-specific file extensions to handlers. */
  var langHandlerRegistry = {};
  /** Register a language handler for the given file extensions.
    * @param {function (Object)} handler a function from source code to a list
    *      of decorations.  Takes a single argument job which describes the
    *      state of the computation.   The single parameter has the form
    *      {@code {
    *        sourceCode: {string} as plain text.
    *        decorations: {Array.<number|string>} an array of style classes
    *                     preceded by the position at which they start in
    *                     job.sourceCode in order.
    *                     The language handler should assigned this field.
    *        basePos: {int} the position of source in the larger source chunk.
    *                 All positions in the output decorations array are relative
    *                 to the larger source chunk.
    *      } }
    * @param {Array.<string>} fileExtensions
    */
  function registerLangHandler(handler, fileExtensions) {
    for (var i = fileExtensions.length; --i >= 0;) {
      var ext = fileExtensions[i];
      if (!langHandlerRegistry.hasOwnProperty(ext)) {
        langHandlerRegistry[ext] = handler;
      } else if (win['console']) {
        console['warn']('cannot override language handler %s', ext);
      }
    }
  }
  function langHandlerForExtension(extension, source) {
    if (!(extension && langHandlerRegistry.hasOwnProperty(extension))) {
      // Treat it as markup if the first non whitespace character is a < and
      // the last non-whitespace character is a >.
      extension = /^\s*</.test(source)
          ? 'default-markup'
          : 'default-code';
    }
    return langHandlerRegistry[extension];
  }
  registerLangHandler(decorateSource, ['default-code']);
  registerLangHandler(
      createSimpleLexer(
          [],
          [
           [PR_PLAIN,       /^[^<?]+/],
           [PR_DECLARATION, /^<!\w[^>]*(?:>|$)/],
           [PR_COMMENT,     /^<\!--[\s\S]*?(?:-\->|$)/],
           // Unescaped content in an unknown language
           ['lang-',        /^<\?([\s\S]+?)(?:\?>|$)/],
           ['lang-',        /^<%([\s\S]+?)(?:%>|$)/],
           [PR_PUNCTUATION, /^(?:<[%?]|[%?]>)/],
           ['lang-',        /^<xmp\b[^>]*>([\s\S]+?)<\/xmp\b[^>]*>/i],
           // Unescaped content in javascript.  (Or possibly vbscript).
           ['lang-js',      /^<script\b[^>]*>([\s\S]*?)(<\/script\b[^>]*>)/i],
           // Contains unescaped stylesheet content
           ['lang-css',     /^<style\b[^>]*>([\s\S]*?)(<\/style\b[^>]*>)/i],
           ['lang-in.tag',  /^(<\/?[a-z][^<>]*>)/i]
          ]),
      ['default-markup', 'htm', 'html', 'mxml', 'xhtml', 'xml', 'xsl']);
  registerLangHandler(
      createSimpleLexer(
          [
           [PR_PLAIN,        /^[\s]+/, null, ' \t\r\n'],
           [PR_ATTRIB_VALUE, /^(?:\"[^\"]*\"?|\'[^\']*\'?)/, null, '\"\'']
           ],
          [
           [PR_TAG,          /^^<\/?[a-z](?:[\w.:-]*\w)?|\/?>$/i],
           [PR_ATTRIB_NAME,  /^(?!style[\s=]|on)[a-z](?:[\w:-]*\w)?/i],
           ['lang-uq.val',   /^=\s*([^>\'\"\s]*(?:[^>\'\"\s\/]|\/(?=\s)))/],
           [PR_PUNCTUATION,  /^[=<>\/]+/],
           ['lang-js',       /^on\w+\s*=\s*\"([^\"]+)\"/i],
           ['lang-js',       /^on\w+\s*=\s*\'([^\']+)\'/i],
           ['lang-js',       /^on\w+\s*=\s*([^\"\'>\s]+)/i],
           ['lang-css',      /^style\s*=\s*\"([^\"]+)\"/i],
           ['lang-css',      /^style\s*=\s*\'([^\']+)\'/i],
           ['lang-css',      /^style\s*=\s*([^\"\'>\s]+)/i]
           ]),
      ['in.tag']);
  registerLangHandler(
      createSimpleLexer([], [[PR_ATTRIB_VALUE, /^[\s\S]+/]]), ['uq.val']);
  registerLangHandler(sourceDecorator({
          'keywords': CPP_KEYWORDS,
          'hashComments': true,
          'cStyleComments': true,
          'types': C_TYPES
        }), ['c', 'cc', 'cpp', 'cxx', 'cyc', 'm']);
  registerLangHandler(sourceDecorator({
          'keywords': 'null,true,false'
        }), ['json']);
  registerLangHandler(sourceDecorator({
          'keywords': CSHARP_KEYWORDS,
          'hashComments': true,
          'cStyleComments': true,
          'verbatimStrings': true,
          'types': C_TYPES
        }), ['cs']);
  registerLangHandler(sourceDecorator({
          'keywords': JAVA_KEYWORDS,
          'cStyleComments': true
        }), ['java']);
  registerLangHandler(sourceDecorator({
          'keywords': SH_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true
        }), ['bash', 'bsh', 'csh', 'sh']);
  registerLangHandler(sourceDecorator({
          'keywords': PYTHON_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true,
          'tripleQuotedStrings': true
        }), ['cv', 'py', 'python']);
  registerLangHandler(sourceDecorator({
          'keywords': PERL_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true,
          'regexLiterals': 2  // multiline regex literals
        }), ['perl', 'pl', 'pm']);
  registerLangHandler(sourceDecorator({
          'keywords': RUBY_KEYWORDS,
          'hashComments': true,
          'multiLineStrings': true,
          'regexLiterals': true
        }), ['rb', 'ruby']);
  registerLangHandler(sourceDecorator({
          'keywords': JSCRIPT_KEYWORDS,
          'cStyleComments': true,
          'regexLiterals': true
        }), ['javascript', 'js']);
  registerLangHandler(sourceDecorator({
          'keywords': COFFEE_KEYWORDS,
          'hashComments': 3,  // ### style block comments
          'cStyleComments': true,
          'multilineStrings': true,
          'tripleQuotedStrings': true,
          'regexLiterals': true
        }), ['coffee']);
  registerLangHandler(sourceDecorator({
          'keywords': RUST_KEYWORDS,
          'cStyleComments': true,
          'multilineStrings': true
        }), ['rc', 'rs', 'rust']);
  registerLangHandler(
      createSimpleLexer([], [[PR_STRING, /^[\s\S]+/]]), ['regex']);

  function applyDecorator(job) {
    var opt_langExtension = job.langExtension;

    try {
      // Extract tags, and convert the source code to plain text.
      var sourceAndSpans = extractSourceSpans(job.sourceNode, job.pre);
      /** Plain text. @type {string} */
      var source = sourceAndSpans.sourceCode;
      job.sourceCode = source;
      job.spans = sourceAndSpans.spans;
      job.basePos = 0;

      // Apply the appropriate language handler
      langHandlerForExtension(opt_langExtension, source)(job);

      // Integrate the decorations and tags back into the source code,
      // modifying the sourceNode in place.
      recombineTagsAndDecorations(job);
    } catch (e) {
      if (win['console']) {
        console['log'](e && e['stack'] || e);
      }
    }
  }

  /**
   * Pretty print a chunk of code.
   * @param sourceCodeHtml {string} The HTML to pretty print.
   * @param opt_langExtension {string} The language name to use.
   *     Typically, a filename extension like 'cpp' or 'java'.
   * @param opt_numberLines {number|boolean} True to number lines,
   *     or the 1-indexed number of the first line in sourceCodeHtml.
   */
  function $prettyPrintOne(sourceCodeHtml, opt_langExtension, opt_numberLines) {
    var container = document.createElement('div');
    // This could cause images to load and onload listeners to fire.
    // E.g. <img onerror="alert(1337)" src="nosuchimage.png">.
    // We assume that the inner HTML is from a trusted source.
    // The pre-tag is required for IE8 which strips newlines from innerHTML
    // when it is injected into a <pre> tag.
    // http://stackoverflow.com/questions/451486/pre-tag-loses-line-breaks-when-setting-innerhtml-in-ie
    // http://stackoverflow.com/questions/195363/inserting-a-newline-into-a-pre-tag-ie-javascript
    container.innerHTML = '<pre>' + sourceCodeHtml + '</pre>';
    container = container.firstChild;
    if (opt_numberLines) {
      numberLines(container, opt_numberLines, true);
    }

    var job = {
      langExtension: opt_langExtension,
      numberLines: opt_numberLines,
      sourceNode: container,
      pre: 1
    };
    applyDecorator(job);
    return container.innerHTML;
  }

   /**
    * Find all the {@code <pre>} and {@code <code>} tags in the DOM with
    * {@code class=prettyprint} and prettify them.
    *
    * @param {Function} opt_whenDone called when prettifying is done.
    * @param {HTMLElement|HTMLDocument} opt_root an element or document
    *   containing all the elements to pretty print.
    *   Defaults to {@code document.body}.
    */
  function $prettyPrint(opt_whenDone, opt_root) {
    var root = opt_root || document.body;
    var doc = root.ownerDocument || document;
    function byTagName(tn) { return root.getElementsByTagName(tn); }
    // fetch a list of nodes to rewrite
    var codeSegments = [byTagName('pre'), byTagName('code'), byTagName('xmp')];
    var elements = [];
    for (var i = 0; i < codeSegments.length; ++i) {
      for (var j = 0, n = codeSegments[i].length; j < n; ++j) {
        elements.push(codeSegments[i][j]);
      }
    }
    codeSegments = null;

    var clock = Date;
    if (!clock['now']) {
      clock = { 'now': function () { return +(new Date); } };
    }

    // The loop is broken into a series of continuations to make sure that we
    // don't make the browser unresponsive when rewriting a large page.
    var k = 0;
    var prettyPrintingJob;

    var langExtensionRe = /\blang(?:uage)?-([\w.]+)(?!\S)/;
    var prettyPrintRe = /\bprettyprint\b/;
    var prettyPrintedRe = /\bprettyprinted\b/;
    var preformattedTagNameRe = /pre|xmp/i;
    var codeRe = /^code$/i;
    var preCodeXmpRe = /^(?:pre|code|xmp)$/i;
    var EMPTY = {};

    function doWork() {
      var endTime = (win['PR_SHOULD_USE_CONTINUATION'] ?
                     clock['now']() + 250 /* ms */ :
                     Infinity);
      for (; k < elements.length && clock['now']() < endTime; k++) {
        var cs = elements[k];

        // Look for a preceding comment like
        // <?prettify lang="..." linenums="..."?>
        var attrs = EMPTY;
        {
          for (var preceder = cs; (preceder = preceder.previousSibling);) {
            var nt = preceder.nodeType;
            // <?foo?> is parsed by HTML 5 to a comment node (8)
            // like <!--?foo?-->, but in XML is a processing instruction
            var value = (nt === 7 || nt === 8) && preceder.nodeValue;
            if (value
                ? !/^\??prettify\b/.test(value)
                : (nt !== 3 || /\S/.test(preceder.nodeValue))) {
              // Skip over white-space text nodes but not others.
              break;
            }
            if (value) {
              attrs = {};
              value.replace(
                  /\b(\w+)=([\w:.%+-]+)/g,
                function (_, name, value) { attrs[name] = value; });
              break;
            }
          }
        }

        var className = cs.className;
        if ((attrs !== EMPTY || prettyPrintRe.test(className))
            // Don't redo this if we've already done it.
            // This allows recalling pretty print to just prettyprint elements
            // that have been added to the page since last call.
            && !prettyPrintedRe.test(className)) {

          // make sure this is not nested in an already prettified element
          var nested = false;
          for (var p = cs.parentNode; p; p = p.parentNode) {
            var tn = p.tagName;
            if (preCodeXmpRe.test(tn)
                && p.className && prettyPrintRe.test(p.className)) {
              nested = true;
              break;
            }
          }
          if (!nested) {
            // Mark done.  If we fail to prettyprint for whatever reason,
            // we shouldn't try again.
            cs.className += ' prettyprinted';

            // If the classes includes a language extensions, use it.
            // Language extensions can be specified like
            //     <pre class="prettyprint lang-cpp">
            // the language extension "cpp" is used to find a language handler
            // as passed to PR.registerLangHandler.
            // HTML5 recommends that a language be specified using "language-"
            // as the prefix instead.  Google Code Prettify supports both.
            // http://dev.w3.org/html5/spec-author-view/the-code-element.html
            var langExtension = attrs['lang'];
            if (!langExtension) {
              langExtension = className.match(langExtensionRe);
              // Support <pre class="prettyprint"><code class="language-c">
              var wrapper;
              if (!langExtension && (wrapper = childContentWrapper(cs))
                  && codeRe.test(wrapper.tagName)) {
                langExtension = wrapper.className.match(langExtensionRe);
              }

              if (langExtension) { langExtension = langExtension[1]; }
            }

            var preformatted;
            if (preformattedTagNameRe.test(cs.tagName)) {
              preformatted = 1;
            } else {
              var currentStyle = cs['currentStyle'];
              var defaultView = doc.defaultView;
              var whitespace = (
                  currentStyle
                  ? currentStyle['whiteSpace']
                  : (defaultView
                     && defaultView.getComputedStyle)
                  ? defaultView.getComputedStyle(cs, null)
                  .getPropertyValue('white-space')
                  : 0);
              preformatted = whitespace
                  && 'pre' === whitespace.substring(0, 3);
            }

            // Look for a class like linenums or linenums:<n> where <n> is the
            // 1-indexed number of the first line.
            var lineNums = attrs['linenums'];
            if (!(lineNums = lineNums === 'true' || +lineNums)) {
              lineNums = className.match(/\blinenums\b(?::(\d+))?/);
              lineNums =
                lineNums
                ? lineNums[1] && lineNums[1].length
                  ? +lineNums[1] : true
                : false;
            }
            if (lineNums) { numberLines(cs, lineNums, preformatted); }

            // do the pretty printing
            prettyPrintingJob = {
              langExtension: langExtension,
              sourceNode: cs,
              numberLines: lineNums,
              pre: preformatted
            };
            applyDecorator(prettyPrintingJob);
          }
        }
      }
      if (k < elements.length) {
        // finish up in a continuation
        setTimeout(doWork, 250);
      } else if ('function' === typeof opt_whenDone) {
        opt_whenDone();
      }
    }

    doWork();
  }

  /**
   * Contains functions for creating and registering new language handlers.
   * @type {Object}
   */
  var PR = win['PR'] = {
        'createSimpleLexer': createSimpleLexer,
        'registerLangHandler': registerLangHandler,
        'sourceDecorator': sourceDecorator,
        'PR_ATTRIB_NAME': PR_ATTRIB_NAME,
        'PR_ATTRIB_VALUE': PR_ATTRIB_VALUE,
        'PR_COMMENT': PR_COMMENT,
        'PR_DECLARATION': PR_DECLARATION,
        'PR_KEYWORD': PR_KEYWORD,
        'PR_LITERAL': PR_LITERAL,
        'PR_NOCODE': PR_NOCODE,
        'PR_PLAIN': PR_PLAIN,
        'PR_PUNCTUATION': PR_PUNCTUATION,
        'PR_SOURCE': PR_SOURCE,
        'PR_STRING': PR_STRING,
        'PR_TAG': PR_TAG,
        'PR_TYPE': PR_TYPE,
        'prettyPrintOne':
           IN_GLOBAL_SCOPE
             ? (win['prettyPrintOne'] = $prettyPrintOne)
             : (prettyPrintOne = $prettyPrintOne),
        'prettyPrint': prettyPrint =
           IN_GLOBAL_SCOPE
             ? (win['prettyPrint'] = $prettyPrint)
             : (prettyPrint = $prettyPrint)
      };

  // Make PR available via the Asynchronous Module Definition (AMD) API.
  // Per https://github.com/amdjs/amdjs-api/wiki/AMD:
  // The Asynchronous Module Definition (AMD) API specifies a
  // mechanism for defining modules such that the module and its
  // dependencies can be asynchronously loaded.
  // ...
  // To allow a clear indicator that a global define function (as
  // needed for script src browser loading) conforms to the AMD API,
  // any global define function SHOULD have a property called "amd"
  // whose value is an object. This helps avoid conflict with any
  // other existing JavaScript code that could have defined a define()
  // function that does not conform to the AMD API.
  if (typeof define === "function" && define['amd']) {
    define("google-code-prettify", [], function () {
      return PR; 
    });
  }
})();

var Markdown;

if (typeof exports === "object" && typeof require === "function") // we're in a CommonJS (e.g. Node.js) module
    Markdown = exports;
else
    Markdown = {};
    
// The following text is included for historical reasons, but should
// be taken with a pinch of salt; it's not all true anymore.

//
// Wherever possible, Showdown is a straight, line-by-line port
// of the Perl version of Markdown.
//
// This is not a normal parser design; it's basically just a
// series of string substitutions.  It's hard to read and
// maintain this way,  but keeping Showdown close to the original
// design makes it easier to port new features.
//
// More importantly, Showdown behaves like markdown.pl in most
// edge cases.  So web applications can do client-side preview
// in Javascript, and then build identical HTML on the server.
//
// This port needs the new RegExp functionality of ECMA 262,
// 3rd Edition (i.e. Javascript 1.5).  Most modern web browsers
// should do fine.  Even with the new regular expression features,
// We do a lot of work to emulate Perl's regex functionality.
// The tricky changes in this file mostly have the "attacklab:"
// label.  Major or self-explanatory changes don't.
//
// Smart diff tools like Araxis Merge will be able to match up
// this file with markdown.pl in a useful way.  A little tweaking
// helps: in a copy of markdown.pl, replace "#" with "//" and
// replace "$text" with "text".  Be sure to ignore whitespace
// and line endings.
//


//
// Usage:
//
//   var text = "Markdown *rocks*.";
//
//   var converter = new Markdown.Converter();
//   var html = converter.makeHtml(text);
//
//   alert(html);
//
// Note: move the sample code to the bottom of this
// file before uncommenting it.
//

(function () {

    function identity(x) { return x; }
    function returnFalse(x) { return false; }

    function HookCollection() { }

    HookCollection.prototype = {

        chain: function (hookname, func) {
            var original = this[hookname];
            if (!original)
                throw new Error("unknown hook " + hookname);

            if (original === identity)
                this[hookname] = func;
            else
                this[hookname] = function (text) {
                    var args = Array.prototype.slice.call(arguments, 0);
                    args[0] = original.apply(null, args);
                    return func.apply(null, args);
                };
        },
        set: function (hookname, func) {
            if (!this[hookname])
                throw new Error("unknown hook " + hookname);
            this[hookname] = func;
        },
        addNoop: function (hookname) {
            this[hookname] = identity;
        },
        addFalse: function (hookname) {
            this[hookname] = returnFalse;
        }
    };

    Markdown.HookCollection = HookCollection;

    // g_urls and g_titles allow arbitrary user-entered strings as keys. This
    // caused an exception (and hence stopped the rendering) when the user entered
    // e.g. [push] or [__proto__]. Adding a prefix to the actual key prevents this
    // (since no builtin property starts with "s_"). See
    // http://meta.stackoverflow.com/questions/64655/strange-wmd-bug
    // (granted, switching from Array() to Object() alone would have left only __proto__
    // to be a problem)
    function SaveHash() { }
    SaveHash.prototype = {
        set: function (key, value) {
            this["s_" + key] = value;
        },
        get: function (key) {
            return this["s_" + key];
        }
    };

    Markdown.Converter = function () {
        var options = {};
        this.setOptions = function(optionsParam) {
            options = optionsParam;
        };
        
        var pluginHooks = this.hooks = new HookCollection();
        
        // given a URL that was encountered by itself (without markup), should return the link text that's to be given to this link
        pluginHooks.addNoop("plainLinkText");
        
        // called with the orignal text as given to makeHtml. The result of this plugin hook is the actual markdown source that will be cooked
        pluginHooks.addNoop("preConversion");
        
        // called with the text once all normalizations have been completed (tabs to spaces, line endings, etc.), but before any conversions have
        pluginHooks.addNoop("postNormalization");
        
        // Called with the text before / after creating block elements like code blocks and lists. Note that this is called recursively
        // with inner content, e.g. it's called with the full text, and then only with the content of a blockquote. The inner
        // call will receive outdented text.
        pluginHooks.addNoop("preBlockGamut");
        pluginHooks.addNoop("postBlockGamut");
        
        // called with the text of a single block element before / after the span-level conversions (bold, code spans, etc.) have been made
        pluginHooks.addNoop("preSpanGamut");
        pluginHooks.addNoop("postSpanGamut");
        
        // called with the final cooked HTML code. The result of this plugin hook is the actual output of makeHtml
        pluginHooks.addNoop("postConversion");

        //
        // Private state of the converter instance:
        //

        // Global hashes, used by various utility routines
        var g_urls;
        var g_titles;
        var g_html_blocks;

        // Used to track when we're inside an ordered or unordered list
        // (see _ProcessListItems() for details):
        var g_list_level;

        this.makeHtml = function (text) {

            //
            // Main function. The order in which other subs are called here is
            // essential. Link and image substitutions need to happen before
            // _EscapeSpecialCharsWithinTagAttributes(), so that any *'s or _'s in the <a>
            // and <img> tags get encoded.
            //

            // This will only happen if makeHtml on the same converter instance is called from a plugin hook.
            // Don't do that.
            if (g_urls)
                throw new Error("Recursive call to converter.makeHtml");
        
            // Create the private state objects.
            g_urls = new SaveHash();
            g_titles = new SaveHash();
            g_html_blocks = [];
            g_list_level = 0;

            text = pluginHooks.preConversion(text);

            // attacklab: Replace ~ with ~T
            // This lets us use tilde as an escape char to avoid md5 hashes
            // The choice of character is arbitray; anything that isn't
            // magic in Markdown will work.
            text = text.replace(/~/g, "~T");

            // attacklab: Replace $ with ~D
            // RegExp interprets $ as a special character
            // when it's in a replacement string
            text = text.replace(/\$/g, "~D");

            // Standardize line endings
            text = text.replace(/\r\n/g, "\n"); // DOS to Unix
            text = text.replace(/\r/g, "\n"); // Mac to Unix

            // Make sure text begins and ends with a couple of newlines:
            text = "\n\n" + text + "\n\n";

            // Convert all tabs to spaces.
            text = _Detab(text);

            // Strip any lines consisting only of spaces and tabs.
            // This makes subsequent regexen easier to write, because we can
            // match consecutive blank lines with /\n+/ instead of something
            // contorted like /[ \t]*\n+/ .
            text = text.replace(/^[ \t]+$/mg, "");
            
            text = pluginHooks.postNormalization(text);

            // Turn block-level HTML blocks into hash entries
            text = _HashHTMLBlocks(text);

            // Strip link definitions, store in hashes.
            text = _StripLinkDefinitions(text);

            text = _RunBlockGamut(text);

            text = _UnescapeSpecialChars(text);

            // attacklab: Restore dollar signs
            text = text.replace(/~D/g, "$$");

            // attacklab: Restore tildes
            text = text.replace(/~T/g, "~");

            text = pluginHooks.postConversion(text);

            g_html_blocks = g_titles = g_urls = null;

            return text;
        };

        function _StripLinkDefinitions(text) {
            //
            // Strips link definitions from text, stores the URLs and titles in
            // hash references.
            //

            // Link defs are in the form: ^[id]: url "optional title"

            /*
            text = text.replace(/
                ^[ ]{0,3}\[(.+)\]:  // id = $1  attacklab: g_tab_width - 1
                [ \t]*
                \n?                 // maybe *one* newline
                [ \t]*
                <?(\S+?)>?          // url = $2
                (?=\s|$)            // lookahead for whitespace instead of the lookbehind removed below
                [ \t]*
                \n?                 // maybe one newline
                [ \t]*
                (                   // (potential) title = $3
                    (\n*)           // any lines skipped = $4 attacklab: lookbehind removed
                    [ \t]+
                    ["(]
                    (.+?)           // title = $5
                    [")]
                    [ \t]*
                )?                  // title is optional
                (?:\n+|$)
            /gm, function(){...});
            */

            text = text.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?(?=\s|$)[ \t]*\n?[ \t]*((\n*)["(](.+?)[")][ \t]*)?(?:\n+)/gm,
                function (wholeMatch, m1, m2, m3, m4, m5) {
                    m1 = m1.toLowerCase();
                    g_urls.set(m1, _EncodeAmpsAndAngles(m2));  // Link IDs are case-insensitive
                    if (m4) {
                        // Oops, found blank lines, so it's not a title.
                        // Put back the parenthetical statement we stole.
                        return m3;
                    } else if (m5) {
                        g_titles.set(m1, m5.replace(/"/g, "&quot;"));
                    }

                    // Completely remove the definition from the text
                    return "";
                }
            );

            return text;
        }

        function _HashHTMLBlocks(text) {

            // Hashify HTML blocks:
            // We only want to do this for block-level HTML tags, such as headers,
            // lists, and tables. That's because we still want to wrap <p>s around
            // "paragraphs" that are wrapped in non-block-level tags, such as anchors,
            // phrase emphasis, and spans. The list of tags we're looking for is
            // hard-coded:
            var block_tags_a = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del"
            var block_tags_b = "p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math"

            // First, look for nested blocks, e.g.:
            //   <div>
            //     <div>
            //     tags for inner block must be indented.
            //     </div>
            //   </div>
            //
            // The outermost tags must start at the left margin for this to match, and
            // the inner nested divs must be indented.
            // We need to do this before the next, more liberal match, because the next
            // match will start at the first `<div>` and stop at the first `</div>`.

            // attacklab: This regex can be expensive when it fails.

            /*
            text = text.replace(/
                (                       // save in $1
                    ^                   // start of line  (with /m)
                    <($block_tags_a)    // start tag = $2
                    \b                  // word break
                                        // attacklab: hack around khtml/pcre bug...
                    [^\r]*?\n           // any number of lines, minimally matching
                    </\2>               // the matching end tag
                    [ \t]*              // trailing spaces/tabs
                    (?=\n+)             // followed by a newline
                )                       // attacklab: there are sentinel newlines at end of document
            /gm,function(){...}};
            */
            text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm, hashElement);

            //
            // Now match more liberally, simply from `\n<tag>` to `</tag>\n`
            //

            /*
            text = text.replace(/
                (                       // save in $1
                    ^                   // start of line  (with /m)
                    <($block_tags_b)    // start tag = $2
                    \b                  // word break
                                        // attacklab: hack around khtml/pcre bug...
                    [^\r]*?             // any number of lines, minimally matching
                    .*</\2>             // the matching end tag
                    [ \t]*              // trailing spaces/tabs
                    (?=\n+)             // followed by a newline
                )                       // attacklab: there are sentinel newlines at end of document
            /gm,function(){...}};
            */
            text = text.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm, hashElement);

            // Special case just for <hr />. It was easier to make a special case than
            // to make the other regex more complicated.  

            /*
            text = text.replace(/
                \n                  // Starting after a blank line
                [ ]{0,3}
                (                   // save in $1
                    (<(hr)          // start tag = $2
                        \b          // word break
                        ([^<>])*?
                    \/?>)           // the matching end tag
                    [ \t]*
                    (?=\n{2,})      // followed by a blank line
                )
            /g,hashElement);
            */
            text = text.replace(/\n[ ]{0,3}((<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g, hashElement);

            // Special case for standalone HTML comments:

            /*
            text = text.replace(/
                \n\n                                            // Starting after a blank line
                [ ]{0,3}                                        // attacklab: g_tab_width - 1
                (                                               // save in $1
                    <!
                    (--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)   // see http://www.w3.org/TR/html-markup/syntax.html#comments and http://meta.stackoverflow.com/q/95256
                    >
                    [ \t]*
                    (?=\n{2,})                                  // followed by a blank line
                )
            /g,hashElement);
            */
            text = text.replace(/\n\n[ ]{0,3}(<!(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>[ \t]*(?=\n{2,}))/g, hashElement);

            // PHP and ASP-style processor instructions (<?...?> and <%...%>)

            /*
            text = text.replace(/
                (?:
                    \n\n            // Starting after a blank line
                )
                (                   // save in $1
                    [ ]{0,3}        // attacklab: g_tab_width - 1
                    (?:
                        <([?%])     // $2
                        [^\r]*?
                        \2>
                    )
                    [ \t]*
                    (?=\n{2,})      // followed by a blank line
                )
            /g,hashElement);
            */
            text = text.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g, hashElement);

            return text;
        }

        function hashElement(wholeMatch, m1) {
            var blockText = m1;

            // Undo double lines
            blockText = blockText.replace(/^\n+/, "");

            // strip trailing blank lines
            blockText = blockText.replace(/\n+$/g, "");

            // Replace the element text with a marker ("~KxK" where x is its key)
            blockText = "\n\n~K" + (g_html_blocks.push(blockText) - 1) + "K\n\n";

            return blockText;
        }
        
        var blockGamutHookCallback = function (t) { return _RunBlockGamut(t); }

        function _RunBlockGamut(text, doNotUnhash) {
            //
            // These are all the transformations that form block-level
            // tags like paragraphs, headers, and list items.
            //
            
            text = pluginHooks.preBlockGamut(text, blockGamutHookCallback);
            
            text = _DoHeaders(text);

            // Do Horizontal Rules:
            var replacement = "<hr />\n";
            text = text.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm, replacement);
            text = text.replace(/^[ ]{0,2}([ ]?-[ ]?){3,}[ \t]*$/gm, replacement);
            text = text.replace(/^[ ]{0,2}([ ]?_[ ]?){3,}[ \t]*$/gm, replacement);

            text = _DoLists(text);
            text = _DoCodeBlocks(text);
            text = _DoBlockQuotes(text);
            
            text = pluginHooks.postBlockGamut(text, blockGamutHookCallback);

            // We already ran _HashHTMLBlocks() before, in Markdown(), but that
            // was to escape raw HTML in the original Markdown source. This time,
            // we're escaping the markup we've just created, so that we don't wrap
            // <p> tags around block-level tags.
            text = _HashHTMLBlocks(text);
            text = _FormParagraphs(text, doNotUnhash);

            return text;
        }

        function _RunSpanGamut(text) {
            //
            // These are all the transformations that occur *within* block-level
            // tags like paragraphs, headers, and list items.
            //

            text = pluginHooks.preSpanGamut(text);
            
            text = _DoCodeSpans(text);
            text = _EscapeSpecialCharsWithinTagAttributes(text);
            text = _EncodeBackslashEscapes(text);

            // Process anchor and image tags. Images must come first,
            // because ![foo][f] looks like an anchor.
            text = _DoImages(text);
            text = _DoAnchors(text);

            // Make links out of things like `<http://example.com/>`
            // Must come after _DoAnchors(), because you can use < and >
            // delimiters in inline links like [this](<url>).
            text = _DoAutoLinks(text);
            
            text = text.replace(/~P/g, "://"); // put in place to prevent autolinking; reset now
            
            text = _EncodeAmpsAndAngles(text);
            text = options._DoItalicsAndBold ? options._DoItalicsAndBold(text) : _DoItalicsAndBold(text);

            // Do hard breaks:
            text = text.replace(/  +\n/g, " <br>\n");
            
            text = pluginHooks.postSpanGamut(text);

            return text;
        }

        function _EscapeSpecialCharsWithinTagAttributes(text) {
            //
            // Within tags -- meaning between < and > -- encode [\ ` * _] so they
            // don't conflict with their use in Markdown for code, italics and strong.
            //

            // Build a regex to find HTML tags and comments.  See Friedl's 
            // "Mastering Regular Expressions", 2nd Ed., pp. 200-201.

            // SE: changed the comment part of the regex

            var regex = /(<[a-z\/!$]("[^"]*"|'[^']*'|[^'">])*>|<!(--(?:|(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>)/gi;

            text = text.replace(regex, function (wholeMatch) {
                var tag = wholeMatch.replace(/(.)<\/?code>(?=.)/g, "$1`");
                tag = escapeCharacters(tag, wholeMatch.charAt(1) == "!" ? "\\`*_/" : "\\`*_"); // also escape slashes in comments to prevent autolinking there -- http://meta.stackoverflow.com/questions/95987
                return tag;
            });

            return text;
        }

        function _DoAnchors(text) {
            //
            // Turn Markdown link shortcuts into XHTML <a> tags.
            //
            //
            // First, handle reference-style links: [link text] [id]
            //

            /*
            text = text.replace(/
                (                           // wrap whole match in $1
                    \[
                    (
                        (?:
                            \[[^\]]*\]      // allow brackets nested one level
                            |
                            [^\[]           // or anything else
                        )*
                    )
                    \]

                    [ ]?                    // one optional space
                    (?:\n[ ]*)?             // one optional newline followed by spaces

                    \[
                    (.*?)                   // id = $3
                    \]
                )
                ()()()()                    // pad remaining backreferences
            /g, writeAnchorTag);
            */
            text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, writeAnchorTag);

            //
            // Next, inline-style links: [link text](url "optional title")
            //

            /*
            text = text.replace(/
                (                           // wrap whole match in $1
                    \[
                    (
                        (?:
                            \[[^\]]*\]      // allow brackets nested one level
                            |
                            [^\[\]]         // or anything else
                        )*
                    )
                    \]
                    \(                      // literal paren
                    [ \t]*
                    ()                      // no id, so leave $3 empty
                    <?(                     // href = $4
                        (?:
                            \([^)]*\)       // allow one level of (correctly nested) parens (think MSDN)
                            |
                            [^()\s]
                        )*?
                    )>?                
                    [ \t]*
                    (                       // $5
                        (['"])              // quote char = $6
                        (.*?)               // Title = $7
                        \6                  // matching quote
                        [ \t]*              // ignore any spaces/tabs between closing quote and )
                    )?                      // title is optional
                    \)
                )
            /g, writeAnchorTag);
            */

            text = text.replace(/(\[((?:\[[^\]]*\]|[^\[\]])*)\]\([ \t]*()<?((?:\([^)]*\)|[^()\s])*?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g, writeAnchorTag);

            //
            // Last, handle reference-style shortcuts: [link text]
            // These must come last in case you've also got [link test][1]
            // or [link test](/foo)
            //

            /*
            text = text.replace(/
                (                   // wrap whole match in $1
                    \[
                    ([^\[\]]+)      // link text = $2; can't contain '[' or ']'
                    \]
                )
                ()()()()()          // pad rest of backreferences
            /g, writeAnchorTag);
            */
            text = text.replace(/(\[([^\[\]]+)\])()()()()()/g, writeAnchorTag);

            return text;
        }

        function writeAnchorTag(wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
            if (m7 == undefined) m7 = "";
            var whole_match = m1;
            var link_text = m2.replace(/:\/\//g, "~P"); // to prevent auto-linking withing the link. will be converted back after the auto-linker runs
            var link_id = m3.toLowerCase();
            var url = m4;
            var title = m7;

            if (url == "") {
                if (link_id == "") {
                    // lower-case and turn embedded newlines into spaces
                    link_id = link_text.toLowerCase().replace(/ ?\n/g, " ");
                }
                url = "#" + link_id;

                if (g_urls.get(link_id) != undefined) {
                    url = g_urls.get(link_id);
                    if (g_titles.get(link_id) != undefined) {
                        title = g_titles.get(link_id);
                    }
                }
                else {
                    if (whole_match.search(/\(\s*\)$/m) > -1) {
                        // Special case for explicit empty url
                        url = "";
                    } else {
                        return whole_match;
                    }
                }
            }
            url = encodeProblemUrlChars(url);
            url = escapeCharacters(url, "*_");
            var result = "<a href=\"" + url + "\"";

            if (title != "") {
                title = attributeEncode(title);
                title = escapeCharacters(title, "*_");
                result += " title=\"" + title + "\"";
            }

            result += ">" + link_text + "</a>";

            return result;
        }

        function _DoImages(text) {
            //
            // Turn Markdown image shortcuts into <img> tags.
            //

            //
            // First, handle reference-style labeled images: ![alt text][id]
            //

            /*
            text = text.replace(/
                (                   // wrap whole match in $1
                    !\[
                    (.*?)           // alt text = $2
                    \]

                    [ ]?            // one optional space
                    (?:\n[ ]*)?     // one optional newline followed by spaces

                    \[
                    (.*?)           // id = $3
                    \]
                )
                ()()()()            // pad rest of backreferences
            /g, writeImageTag);
            */
            text = text.replace(/(!\[(.*?)\][ ]?(?:\n[ ]*)?\[(.*?)\])()()()()/g, writeImageTag);

            //
            // Next, handle inline images:  ![alt text](url "optional title")
            // Don't forget: encode * and _

            /*
            text = text.replace(/
                (                   // wrap whole match in $1
                    !\[
                    (.*?)           // alt text = $2
                    \]
                    \s?             // One optional whitespace character
                    \(              // literal paren
                    [ \t]*
                    ()              // no id, so leave $3 empty
                    <?(\S+?)>?      // src url = $4
                    [ \t]*
                    (               // $5
                        (['"])      // quote char = $6
                        (.*?)       // title = $7
                        \6          // matching quote
                        [ \t]*
                    )?              // title is optional
                    \)
                )
            /g, writeImageTag);
            */
            text = text.replace(/(!\[(.*?)\]\s?\([ \t]*()<?(\S+?)>?[ \t]*((['"])(.*?)\6[ \t]*)?\))/g, writeImageTag);

            return text;
        }
        
        function attributeEncode(text) {
            // unconditionally replace angle brackets here -- what ends up in an attribute (e.g. alt or title)
            // never makes sense to have verbatim HTML in it (and the sanitizer would totally break it)
            return text.replace(/>/g, "&gt;").replace(/</g, "&lt;").replace(/"/g, "&quot;");
        }

        function writeImageTag(wholeMatch, m1, m2, m3, m4, m5, m6, m7) {
            var whole_match = m1;
            var alt_text = m2;
            var link_id = m3.toLowerCase();
            var url = m4;
            var title = m7;

            if (!title) title = "";

            if (url == "") {
                if (link_id == "") {
                    // lower-case and turn embedded newlines into spaces
                    link_id = alt_text.toLowerCase().replace(/ ?\n/g, " ");
                }
                url = "#" + link_id;

                if (g_urls.get(link_id) != undefined) {
                    url = g_urls.get(link_id);
                    if (g_titles.get(link_id) != undefined) {
                        title = g_titles.get(link_id);
                    }
                }
                else {
                    return whole_match;
                }
            }
            
            alt_text = escapeCharacters(attributeEncode(alt_text), "*_[]()");
            url = escapeCharacters(url, "*_");
            var result = "<img src=\"" + url + "\" alt=\"" + alt_text + "\"";

            // attacklab: Markdown.pl adds empty title attributes to images.
            // Replicate this bug.

            //if (title != "") {
            title = attributeEncode(title);
            title = escapeCharacters(title, "*_");
            result += " title=\"" + title + "\"";
            //}

            result += " />";

            return result;
        }

        function _DoHeaders(text) {

            // Setext-style headers:
            //  Header 1
            //  ========
            //  
            //  Header 2
            //  --------
            //
            text = text.replace(/^(.+)[ \t]*\n=+[ \t]*\n+/gm,
                function (wholeMatch, m1) { return "<h1>" + _RunSpanGamut(m1) + "</h1>\n\n"; }
            );

            text = text.replace(/^(.+)[ \t]*\n-+[ \t]*\n+/gm,
                function (matchFound, m1) { return "<h2>" + _RunSpanGamut(m1) + "</h2>\n\n"; }
            );

            // atx-style headers:
            //  # Header 1
            //  ## Header 2
            //  ## Header 2 with closing hashes ##
            //  ...
            //  ###### Header 6
            //

            /*
            text = text.replace(/
                ^(\#{1,6})      // $1 = string of #'s
                [ \t]*
                (.+?)           // $2 = Header text
                [ \t]*
                \#*             // optional closing #'s (not counted)
                \n+
            /gm, function() {...});
            */

            text = text.replace(/^(\#{1,6})[ \t]*(.+?)[ \t]*\#*\n+/gm,
                function (wholeMatch, m1, m2) {
                    var h_level = m1.length;
                    return "<h" + h_level + ">" + _RunSpanGamut(m2) + "</h" + h_level + ">\n\n";
                }
            );

            return text;
        }

        function _DoLists(text, isInsideParagraphlessListItem) {
            //
            // Form HTML ordered (numbered) and unordered (bulleted) lists.
            //

            // attacklab: add sentinel to hack around khtml/safari bug:
            // http://bugs.webkit.org/show_bug.cgi?id=11231
            text += "~0";

            // Re-usable pattern to match any entirel ul or ol list:

            /*
            var whole_list = /
                (                                   // $1 = whole list
                    (                               // $2
                        [ ]{0,3}                    // attacklab: g_tab_width - 1
                        ([*+-]|\d+[.])              // $3 = first list item marker
                        [ \t]+
                    )
                    [^\r]+?
                    (                               // $4
                        ~0                          // sentinel for workaround; should be $
                        |
                        \n{2,}
                        (?=\S)
                        (?!                         // Negative lookahead for another list item marker
                            [ \t]*
                            (?:[*+-]|\d+[.])[ \t]+
                        )
                    )
                )
            /g
            */
            var whole_list = /^(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm;

            if (g_list_level) {
                text = text.replace(whole_list, function (wholeMatch, m1, m2) {
                    var list = m1;
                    var list_type = (m2.search(/[*+-]/g) > -1) ? "ul" : "ol";

                    var result = _ProcessListItems(list, list_type, isInsideParagraphlessListItem);

                    // Trim any trailing whitespace, to put the closing `</$list_type>`
                    // up on the preceding line, to get it past the current stupid
                    // HTML block parser. This is a hack to work around the terrible
                    // hack that is the HTML block parser.
                    result = result.replace(/\s+$/, "");
                    result = "<" + list_type + ">" + result + "</" + list_type + ">\n";
                    return result;
                });
            } else {
                whole_list = /(\n\n|^\n?)(([ ]{0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(~0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/g;
                text = text.replace(whole_list, function (wholeMatch, m1, m2, m3) {
                    var runup = m1;
                    var list = m2;

                    var list_type = (m3.search(/[*+-]/g) > -1) ? "ul" : "ol";
                    var result = _ProcessListItems(list, list_type);
                    result = runup + "<" + list_type + ">\n" + result + "</" + list_type + ">\n";
                    return result;
                });
            }

            // attacklab: strip sentinel
            text = text.replace(/~0/, "");

            return text;
        }

        var _listItemMarkers = { ol: "\\d+[.]", ul: "[*+-]" };

        function _ProcessListItems(list_str, list_type, isInsideParagraphlessListItem) {
            //
            //  Process the contents of a single ordered or unordered list, splitting it
            //  into individual list items.
            //
            //  list_type is either "ul" or "ol".

            // The $g_list_level global keeps track of when we're inside a list.
            // Each time we enter a list, we increment it; when we leave a list,
            // we decrement. If it's zero, we're not in a list anymore.
            //
            // We do this because when we're not inside a list, we want to treat
            // something like this:
            //
            //    I recommend upgrading to version
            //    8. Oops, now this line is treated
            //    as a sub-list.
            //
            // As a single paragraph, despite the fact that the second line starts
            // with a digit-period-space sequence.
            //
            // Whereas when we're inside a list (or sub-list), that line will be
            // treated as the start of a sub-list. What a kludge, huh? This is
            // an aspect of Markdown's syntax that's hard to parse perfectly
            // without resorting to mind-reading. Perhaps the solution is to
            // change the syntax rules such that sub-lists must start with a
            // starting cardinal number; e.g. "1." or "a.".

            g_list_level++;

            // trim trailing blank lines:
            list_str = list_str.replace(/\n{2,}$/, "\n");

            // attacklab: add sentinel to emulate \z
            list_str += "~0";

            // In the original attacklab showdown, list_type was not given to this function, and anything
            // that matched /[*+-]|\d+[.]/ would just create the next <li>, causing this mismatch:
            //
            //  Markdown          rendered by WMD        rendered by MarkdownSharp
            //  ------------------------------------------------------------------
            //  1. first          1. first               1. first
            //  2. second         2. second              2. second
            //  - third           3. third                   * third
            //
            // We changed this to behave identical to MarkdownSharp. This is the constructed RegEx,
            // with {MARKER} being one of \d+[.] or [*+-], depending on list_type:
        
            /*
            list_str = list_str.replace(/
                (^[ \t]*)                       // leading whitespace = $1
                ({MARKER}) [ \t]+               // list marker = $2
                ([^\r]+?                        // list item text   = $3
                    (\n+)
                )
                (?=
                    (~0 | \2 ({MARKER}) [ \t]+)
                )
            /gm, function(){...});
            */

            var marker = _listItemMarkers[list_type];
            var re = new RegExp("(^[ \\t]*)(" + marker + ")[ \\t]+([^\\r]+?(\\n+))(?=(~0|\\1(" + marker + ")[ \\t]+))", "gm");
            var last_item_had_a_double_newline = false;
            list_str = list_str.replace(re,
                function (wholeMatch, m1, m2, m3) {
                    var item = m3;
                    var leading_space = m1;
                    var ends_with_double_newline = /\n\n$/.test(item);
                    var contains_double_newline = ends_with_double_newline || item.search(/\n{2,}/) > -1;

                    if (contains_double_newline || last_item_had_a_double_newline) {
                        item = _RunBlockGamut(_Outdent(item), /* doNotUnhash = */true);
                    }
                    else {
                        // Recursion for sub-lists:
                        item = _DoLists(_Outdent(item), /* isInsideParagraphlessListItem= */ true);
                        item = item.replace(/\n$/, ""); // chomp(item)
                        if (!isInsideParagraphlessListItem) // only the outer-most item should run this, otherwise it's run multiple times for the inner ones
                            item = _RunSpanGamut(item);
                    }
                    last_item_had_a_double_newline = ends_with_double_newline;
                    return "<li>" + item + "</li>\n";
                }
            );

            // attacklab: strip sentinel
            list_str = list_str.replace(/~0/g, "");

            g_list_level--;
            return list_str;
        }

        function _DoCodeBlocks(text) {
            //
            //  Process Markdown `<pre><code>` blocks.
            //  

            /*
            text = text.replace(/
                (?:\n\n|^)
                (                               // $1 = the code block -- one or more lines, starting with a space/tab
                    (?:
                        (?:[ ]{4}|\t)           // Lines must start with a tab or a tab-width of spaces - attacklab: g_tab_width
                        .*\n+
                    )+
                )
                (\n*[ ]{0,3}[^ \t\n]|(?=~0))    // attacklab: g_tab_width
            /g ,function(){...});
            */

            // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
            text += "~0";

            text = text.replace(/(?:\n\n|^\n?)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=~0))/g,
                function (wholeMatch, m1, m2) {
                    var codeblock = m1;
                    var nextChar = m2;

                    codeblock = _EncodeCode(_Outdent(codeblock));
                    codeblock = _Detab(codeblock);
                    codeblock = codeblock.replace(/^\n+/g, ""); // trim leading newlines
                    codeblock = codeblock.replace(/\n+$/g, ""); // trim trailing whitespace

                    codeblock = "<pre><code>" + codeblock + "\n</code></pre>";

                    return "\n\n" + codeblock + "\n\n" + nextChar;
                }
            );

            // attacklab: strip sentinel
            text = text.replace(/~0/, "");

            return text;
        }

        function hashBlock(text) {
            text = text.replace(/(^\n+|\n+$)/g, "");
            return "\n\n~K" + (g_html_blocks.push(text) - 1) + "K\n\n";
        }

        function _DoCodeSpans(text) {
            //
            // * Backtick quotes are used for <code></code> spans.
            // 
            // * You can use multiple backticks as the delimiters if you want to
            //   include literal backticks in the code span. So, this input:
            //     
            //      Just type ``foo `bar` baz`` at the prompt.
            //     
            //   Will translate to:
            //     
            //      <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
            //     
            //   There's no arbitrary limit to the number of backticks you
            //   can use as delimters. If you need three consecutive backticks
            //   in your code, use four for delimiters, etc.
            //
            // * You can use spaces to get literal backticks at the edges:
            //     
            //      ... type `` `bar` `` ...
            //     
            //   Turns to:
            //     
            //      ... type <code>`bar`</code> ...
            //

            /*
            text = text.replace(/
                (^|[^\\])       // Character before opening ` can't be a backslash
                (`+)            // $2 = Opening run of `
                (               // $3 = The code block
                    [^\r]*?
                    [^`]        // attacklab: work around lack of lookbehind
                )
                \2              // Matching closer
                (?!`)
            /gm, function(){...});
            */

            text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
                function (wholeMatch, m1, m2, m3, m4) {
                    var c = m3;
                    c = c.replace(/^([ \t]*)/g, ""); // leading whitespace
                    c = c.replace(/[ \t]*$/g, ""); // trailing whitespace
                    c = _EncodeCode(c);
                    c = c.replace(/:\/\//g, "~P"); // to prevent auto-linking. Not necessary in code *blocks*, but in code spans. Will be converted back after the auto-linker runs.
                    return m1 + "<code>" + c + "</code>";
                }
            );

            return text;
        }

        function _EncodeCode(text) {
            //
            // Encode/escape certain characters inside Markdown code runs.
            // The point is that in code, these characters are literals,
            // and lose their special Markdown meanings.
            //
            // Encode all ampersands; HTML entities are not
            // entities within a Markdown code span.
            text = text.replace(/&/g, "&amp;");

            // Do the angle bracket song and dance:
            text = text.replace(/</g, "&lt;");
            text = text.replace(/>/g, "&gt;");

            // Now, escape characters that are magic in Markdown:
            text = escapeCharacters(text, "\*_{}[]\\", false);

            // jj the line above breaks this:
            //---

            //* Item

            //   1. Subitem

            //            special char: *
            //---

            return text;
        }

        function _DoItalicsAndBold(text) {

            // <strong> must go first:
            text = text.replace(/([\W_]|^)(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\2([\W_]|$)/g,
            "$1<strong>$3</strong>$4");

            text = text.replace(/([\W_]|^)(\*|_)(?=\S)([^\r\*_]*?\S)\2([\W_]|$)/g,
            "$1<em>$3</em>$4");

            return text;
        }

        function _DoBlockQuotes(text) {

            /*
            text = text.replace(/
                (                           // Wrap whole match in $1
                    (
                        ^[ \t]*>[ \t]?      // '>' at the start of a line
                        .+\n                // rest of the first line
                        (.+\n)*             // subsequent consecutive lines
                        \n*                 // blanks
                    )+
                )
            /gm, function(){...});
            */

            text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
                function (wholeMatch, m1) {
                    var bq = m1;

                    // attacklab: hack around Konqueror 3.5.4 bug:
                    // "----------bug".replace(/^-/g,"") == "bug"

                    bq = bq.replace(/^[ \t]*>[ \t]?/gm, "~0"); // trim one level of quoting

                    // attacklab: clean up hack
                    bq = bq.replace(/~0/g, "");

                    bq = bq.replace(/^[ \t]+$/gm, "");     // trim whitespace-only lines
                    bq = _RunBlockGamut(bq);             // recurse

                    bq = bq.replace(/(^|\n)/g, "$1  ");
                    // These leading spaces screw with <pre> content, so we need to fix that:
                    bq = bq.replace(
                            /(\s*<pre>[^\r]+?<\/pre>)/gm,
                        function (wholeMatch, m1) {
                            var pre = m1;
                            // attacklab: hack around Konqueror 3.5.4 bug:
                            pre = pre.replace(/^  /mg, "~0");
                            pre = pre.replace(/~0/g, "");
                            return pre;
                        });

                    return hashBlock("<blockquote>\n" + bq + "\n</blockquote>");
                }
            );
            return text;
        }

        function _FormParagraphs(text, doNotUnhash) {
            //
            //  Params:
            //    $text - string to process with html <p> tags
            //

            // Strip leading and trailing lines:
            text = text.replace(/^\n+/g, "");
            text = text.replace(/\n+$/g, "");

            var grafs = text.split(/\n{2,}/g);
            var grafsOut = [];
            
            var markerRe = /~K(\d+)K/;

            //
            // Wrap <p> tags.
            //
            var end = grafs.length;
            for (var i = 0; i < end; i++) {
                var str = grafs[i];

                // if this is an HTML marker, copy it
                if (markerRe.test(str)) {
                    grafsOut.push(str);
                }
                else if (/\S/.test(str)) {
                    str = _RunSpanGamut(str);
                    str = str.replace(/^([ \t]*)/g, "<p>");
                    str += "</p>"
                    grafsOut.push(str);
                }

            }
            //
            // Unhashify HTML blocks
            //
            if (!doNotUnhash) {
                end = grafsOut.length;
                for (var i = 0; i < end; i++) {
                    var foundAny = true;
                    while (foundAny) { // we may need several runs, since the data may be nested
                        foundAny = false;
                        grafsOut[i] = grafsOut[i].replace(/~K(\d+)K/g, function (wholeMatch, id) {
                            foundAny = true;
                            return g_html_blocks[id];
                        });
                    }
                }
            }
            return grafsOut.join("\n\n");
        }

        function _EncodeAmpsAndAngles(text) {
            // Smart processing for ampersands and angle brackets that need to be encoded.

            // Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
            //   http://bumppo.net/projects/amputator/
            text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g, "&amp;");

            // Encode naked <'s
            text = text.replace(/<(?![a-z\/?!]|~D)/gi, "&lt;");

            return text;
        }

        function _EncodeBackslashEscapes(text) {
            //
            //   Parameter:  String.
            //   Returns:    The string, with after processing the following backslash
            //               escape sequences.
            //

            // attacklab: The polite way to do this is with the new
            // escapeCharacters() function:
            //
            //     text = escapeCharacters(text,"\\",true);
            //     text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
            //
            // ...but we're sidestepping its use of the (slow) RegExp constructor
            // as an optimization for Firefox.  This function gets called a LOT.

            text = text.replace(/\\(\\)/g, escapeCharacters_callback);
            text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g, escapeCharacters_callback);
            return text;
        }

        var charInsideUrl = "[-A-Z0-9+&@#/%?=~_|[\\]()!:,.;]",
            charEndingUrl = "[-A-Z0-9+&@#/%=~_|[\\])]",
            autoLinkRegex = new RegExp("(=\"|<)?\\b(https?|ftp)(://" + charInsideUrl + "*" + charEndingUrl + ")(?=$|\\W)", "gi"),
            endCharRegex = new RegExp(charEndingUrl, "i");

        function handleTrailingParens(wholeMatch, lookbehind, protocol, link) {
            if (lookbehind)
                return wholeMatch;
            if (link.charAt(link.length - 1) !== ")")
                return "<" + protocol + link + ">";
            var parens = link.match(/[()]/g);
            var level = 0;
            for (var i = 0; i < parens.length; i++) {
                if (parens[i] === "(") {
                    if (level <= 0)
                        level = 1;
                    else
                        level++;
                }
                else {
                    level--;
                }
            }
            var tail = "";
            if (level < 0) {
                var re = new RegExp("\\){1," + (-level) + "}$");
                link = link.replace(re, function (trailingParens) {
                    tail = trailingParens;
                    return "";
                });
            }
            if (tail) {
                var lastChar = link.charAt(link.length - 1);
                if (!endCharRegex.test(lastChar)) {
                    tail = lastChar + tail;
                    link = link.substr(0, link.length - 1);
                }
            }
            return "<" + protocol + link + ">" + tail;
        }
        
        function _DoAutoLinks(text) {

            // note that at this point, all other URL in the text are already hyperlinked as <a href=""></a>
            // *except* for the <http://www.foo.com> case

            // automatically add < and > around unadorned raw hyperlinks
            // must be preceded by a non-word character (and not by =" or <) and followed by non-word/EOF character
            // simulating the lookbehind in a consuming way is okay here, since a URL can neither and with a " nor
            // with a <, so there is no risk of overlapping matches.
            text = text.replace(autoLinkRegex, handleTrailingParens);

            //  autolink anything like <http://example.com>
            
            var replacer = function (wholematch, m1) { return "<a href=\"" + m1 + "\">" + pluginHooks.plainLinkText(m1) + "</a>"; }
            text = text.replace(/<((https?|ftp):[^'">\s]+)>/gi, replacer);

            // Email addresses: <address@domain.foo>
            /*
            text = text.replace(/
                <
                (?:mailto:)?
                (
                    [-.\w]+
                    \@
                    [-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
                )
                >
            /gi, _DoAutoLinks_callback());
            */

            /* disabling email autolinking, since we don't do that on the server, either
            text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
                function(wholeMatch,m1) {
                    return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
                }
            );
            */
            return text;
        }

        function _UnescapeSpecialChars(text) {
            //
            // Swap back in all the special characters we've hidden.
            //
            text = text.replace(/~E(\d+)E/g,
                function (wholeMatch, m1) {
                    var charCodeToReplace = parseInt(m1);
                    return String.fromCharCode(charCodeToReplace);
                }
            );
            return text;
        }

        function _Outdent(text) {
            //
            // Remove one level of line-leading tabs or spaces
            //

            // attacklab: hack around Konqueror 3.5.4 bug:
            // "----------bug".replace(/^-/g,"") == "bug"

            text = text.replace(/^(\t|[ ]{1,4})/gm, "~0"); // attacklab: g_tab_width

            // attacklab: clean up hack
            text = text.replace(/~0/g, "")

            return text;
        }

        function _Detab(text) {
            if (!/\t/.test(text))
                return text;

            var spaces = ["    ", "   ", "  ", " "],
            skew = 0,
            v;

            return text.replace(/[\n\t]/g, function (match, offset) {
                if (match === "\n") {
                    skew = offset + 1;
                    return match;
                }
                v = (offset - skew) % 4;
                skew = offset + 1;
                return spaces[v];
            });
        }

        //
        //  attacklab: Utility functions
        //

        var _problemUrlChars = /(?:["'*()[\]:]|~D)/g;

        // hex-encodes some unusual "problem" chars in URLs to avoid URL detection problems 
        function encodeProblemUrlChars(url) {
            if (!url)
                return "";

            var len = url.length;

            return url.replace(_problemUrlChars, function (match, offset) {
                if (match == "~D") // escape for dollar
                    return "%24";
                if (match == ":") {
                    //if (offset == len - 1 || /[0-9\/]/.test(url.charAt(offset + 1)))
                        return ":"
                }
                return "%" + match.charCodeAt(0).toString(16);
            });
        }


        function escapeCharacters(text, charsToEscape, afterBackslash) {
            // First we have to escape the escape characters so that
            // we can build a character class out of them
            var regexString = "([" + charsToEscape.replace(/([\[\]\\])/g, "\\$1") + "])";

            if (afterBackslash) {
                regexString = "\\\\" + regexString;
            }

            var regex = new RegExp(regexString, "g");
            text = text.replace(regex, escapeCharacters_callback);

            return text;
        }


        function escapeCharacters_callback(wholeMatch, m1) {
            var charCodeToEscape = m1.charCodeAt(0);
            return "~E" + charCodeToEscape + "E";
        }

    }; // end of the Markdown.Converter constructor

})();

define("bower-libs/pagedown-ace/Markdown.Converter", function(){});

// needs Markdown.Converter.js at the moment

(function () {

    
    var util = {},
        position = {},
        ui = {},
        doc = window.document,
        re = window.RegExp,
        nav = window.navigator,
        SETTINGS = { lineLength: 72 },

    // Used to work around some browser bugs where we can't use feature testing.
        uaSniffed = {
            isIE: /msie/.test(nav.userAgent.toLowerCase()),
            isIE_5or6: /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase()),
            isOpera: /opera/.test(nav.userAgent.toLowerCase())
        };

    var defaultsStrings = {
        bold: getMsg("Strong") + " <strong>",
        boldexample: getMsg("strong text"),
        
        italic: getMsg("Emphasis") + " <em>",
        italicexample: getMsg("emphasized text"),
        
        link: getMsg("Hyperlink") + " <a>",
        linkdescription: getMsg("enter link description here"),
        linkdialog: "<p><b>Insert Hyperlink</b></p><p>http://example.com/ \"optional title\"</p>",
        
        quote: getMsg("Blockquote") + " <blockquote>",
        quoteexample: getMsg("Blockquote"),
        
        code: getMsg("Code Sample") + " <pre><code>",
        codeexample: getMsg("enter code here"),
        
        image: getMsg("Image") + " <img>",
        imagedescription: getMsg("enter image description here"),
        imagedialog: "<p><b>Insert Image</b></p><p>http://example.com/images/diagram.jpg \"optional title\"<br><br>Need <a href='http://www.google.com/search?q=free+image+hosting' target='_blank'>free image hosting?</a></p>",
        
        olist: getMsg("Numbered List") + " <ol>",
        ulist: getMsg("Bulleted List") + " <ul>",
        litem: getMsg("List item"),
        
        heading: getMsg("Heading") + " <h1>/<h2>",
        headingexample: getMsg("Heading"),
        
        hr: getMsg("Horizontal Rule") + " <hr>",
        
        undo: getMsg("Undo") + " -",
        redo: getMsg("Redo") + " -",
        
        help: "Markdown Editing Help"
    };
    
    var keyStrokes = {
        bold: {
            win: 'Ctrl-B',
            mac: 'Command-B|Ctrl-B',
        },
        italic: {
            win: 'Ctrl-I',
            mac: 'Command-I|Ctrl-I',
        },
        link: {
            win: 'Ctrl-L',
            mac: 'Command-L|Ctrl-L',
        },
        quote: {
            win: 'Ctrl-Q',
            mac: 'Command-Q|Ctrl-Q',
        },
        code: {
            win: 'Ctrl-K',
            mac: 'Command-K|Ctrl-K',
        },
        image: {
            win: 'Ctrl-G',
            mac: 'Command-G|Ctrl-G',
        },
        olist: {
            win: 'Ctrl-O',
            mac: 'Command-O|Ctrl-O',
        },
        ulist: {
            win: 'Ctrl-U',
            mac: 'Command-U|Ctrl-U',
        },
        heading: {
            win: 'Ctrl-H',
            mac: 'Command-H|Ctrl-H',
        },
        hr: {
            win: 'Ctrl-R',
            mac: 'Command-R|Ctrl-R',
        },
        undo: {
            win: 'Ctrl-Z',
            mac: 'Command-Z',
        },
        redo: {
            win: 'Ctrl-Y|Ctrl-Shift-Z',
            mac: 'Command-Y|Command-Shift-Z',
        },
    };


    // -------------------------------------------------------------------
    //  YOUR CHANGES GO HERE
    //
    // I've tried to localize the things you are likely to change to
    // this area.
    // -------------------------------------------------------------------

    // The default text that appears in the dialog input box when entering
    // links.
    var imageDefaultText = "http://";
    var linkDefaultText = "http://";

    // -------------------------------------------------------------------
    //  END OF YOUR CHANGES
    // -------------------------------------------------------------------

    // options, if given, can have the following properties:
    //   options.helpButton = { handler: yourEventHandler }
    //   options.strings = { italicexample: "slanted text" }
    // `yourEventHandler` is the click handler for the help button.
    // If `options.helpButton` isn't given, not help button is created.
    // `options.strings` can have any or all of the same properties as
    // `defaultStrings` above, so you can just override some string displayed
    // to the user on a case-by-case basis, or translate all strings to
    // a different language.
    //
    // For backwards compatibility reasons, the `options` argument can also
    // be just the `helpButton` object, and `strings.help` can also be set via
    // `helpButton.title`. This should be considered legacy.
    //
    // The constructed editor object has the methods:
    // - getConverter() returns the markdown converter object that was passed to the constructor
    // - run() actually starts the editor; should be called after all necessary plugins are registered. Calling this more than once is a no-op.
    // - refreshPreview() forces the preview to be updated. This method is only available after run() was called.
    Markdown.Editor = function (markdownConverter, idPostfix, options) {
        
        options = options || {};

        if (typeof options.handler === "function") { //backwards compatible behavior
            options = { helpButton: options };
        }
        options.strings = options.strings || {};
        if (options.helpButton) {
            options.strings.help = options.strings.help || options.helpButton.title;
        }
        // Override default keystrokes
        if(options.keyStrokes) {
            for(var key in options.keyStrokes) {
                keyStrokes[key] = options.keyStrokes[key];
            }
        }
        var getString = function (identifier) { return options.strings[identifier] || defaultsStrings[identifier]; }

        idPostfix = idPostfix || "";

        var hooks = this.hooks = new Markdown.HookCollection();
        hooks.addNoop("onPreviewRefresh");       // called with no arguments after the preview has been refreshed
        hooks.addNoop("postBlockquoteCreation"); // called with the user's selection *after* the blockquote was created; should return the actual to-be-inserted text
        hooks.addFalse("insertImageDialog");     /* called with one parameter: a callback to be called with the URL of the image. If the application creates
                                                  * its own image insertion dialog, this hook should return true, and the callback should be called with the chosen
                                                  * image url (or null if the user cancelled). If this hook returns false, the default dialog will be used.
                                                  */
        hooks.addFalse("insertLinkDialog");

        this.getConverter = function () { return markdownConverter; }

        var that = this,
            panels;

        var undoManager;
        this.run = function (aceEditor, previewWrapper) {
            if (panels)
                return; // already initialized

            panels = new PanelCollection(idPostfix, aceEditor);
            var commandManager = new CommandManager(hooks, getString);
            var previewManager = new PreviewManager(markdownConverter, panels, function () { hooks.onPreviewRefresh(); }, previewWrapper);
            var uiManager;

            /*benweet
            if (!/\?noundo/.test(doc.location.href)) {
                undoManager = new UndoManager(function () {
                    previewManager.refresh();
                    if (uiManager) // not available on the first call
                        uiManager.setUndoRedoButtonStates();
                }, panels);
                this.textOperation = function (f) {
                    undoManager.setCommandMode();
                    f();
                    that.refreshPreview();
                }
            }
            */

            var os = (navigator.platform.match(/mac|win|linux/i) || ["other"])[0].toLowerCase();
            var isMac = (os == "mac");

            // var useragent = typeof require !== 'undefined' ? require('ace/lib/useragent') : ace.require('ace/lib/useragent');
            var getKey = function (identifier) {
                var keyStroke = keyStrokes[identifier][isMac ? "mac" : "win"];
                var orIndex = keyStroke.indexOf('|');
                return keyStroke.substring(0, orIndex > 0 ? orIndex : keyStroke.length);
            };
            uiManager = new UIManager(idPostfix, panels, undoManager, previewManager, commandManager, options.helpButton, getString, getKey);
            uiManager.setUndoRedoButtonStates();

            var forceRefresh = that.refreshPreview = function () { previewManager.refresh(true); };

            forceRefresh();
            that.uiManager = uiManager;
        };

    }

    // before: contains all the text in the input box BEFORE the selection.
    // after: contains all the text in the input box AFTER the selection.
    function Chunks() { }

    // startRegex: a regular expression to find the start tag
    // endRegex: a regular expresssion to find the end tag
    Chunks.prototype.findTags = function (startRegex, endRegex) {

        var chunkObj = this;
        var regex;

        if (startRegex) {

            regex = util.extendRegExp(startRegex, "", "$");

            this.before = this.before.replace(regex,
                function (match) {
                    chunkObj.startTag = chunkObj.startTag + match;
                    return "";
                });

            regex = util.extendRegExp(startRegex, "^", "");

            this.selection = this.selection.replace(regex,
                function (match) {
                    chunkObj.startTag = chunkObj.startTag + match;
                    return "";
                });
        }

        if (endRegex) {

            regex = util.extendRegExp(endRegex, "", "$");

            this.selection = this.selection.replace(regex,
                function (match) {
                    chunkObj.endTag = match + chunkObj.endTag;
                    return "";
                });

            regex = util.extendRegExp(endRegex, "^", "");

            this.after = this.after.replace(regex,
                function (match) {
                    chunkObj.endTag = match + chunkObj.endTag;
                    return "";
                });
        }
    };

    // If remove is false, the whitespace is transferred
    // to the before/after regions.
    //
    // If remove is true, the whitespace disappears.
    Chunks.prototype.trimWhitespace = function (remove) {
        var beforeReplacer, afterReplacer, that = this;
        if (remove) {
            beforeReplacer = afterReplacer = "";
        } else {
            beforeReplacer = function (s) { that.before += s; return ""; }
            afterReplacer = function (s) { that.after = s + that.after; return ""; }
        }

        this.selection = this.selection.replace(/^(\s*)/, beforeReplacer).replace(/(\s*)$/, afterReplacer);
    };


    Chunks.prototype.skipLines = function (nLinesBefore, nLinesAfter, findExtraNewlines) {

        if (nLinesBefore === undefined) {
            nLinesBefore = 1;
        }

        if (nLinesAfter === undefined) {
            nLinesAfter = 1;
        }

        nLinesBefore++;
        nLinesAfter++;

        var regexText;
        var replacementText;

        // chrome bug ... documented at: http://meta.stackoverflow.com/questions/63307/blockquote-glitch-in-editor-in-chrome-6-and-7/65985#65985
        if (navigator.userAgent.match(/Chrome/)) {
            "X".match(/()./);
        }

        this.selection = this.selection.replace(/(^\n*)/, "");

        this.startTag = this.startTag + re.$1;

        this.selection = this.selection.replace(/(\n*$)/, "");
        this.endTag = this.endTag + re.$1;
        this.startTag = this.startTag.replace(/(^\n*)/, "");
        this.before = this.before + re.$1;
        this.endTag = this.endTag.replace(/(\n*$)/, "");
        this.after = this.after + re.$1;

        if (this.before) {

            regexText = replacementText = "";

            while (nLinesBefore--) {
                regexText += "\\n?";
                replacementText += "\n";
            }

            if (findExtraNewlines) {
                regexText = "\\n*";
            }
            this.before = this.before.replace(new re(regexText + "$", ""), replacementText);
        }

        if (this.after) {

            regexText = replacementText = "";

            while (nLinesAfter--) {
                regexText += "\\n?";
                replacementText += "\n";
            }
            if (findExtraNewlines) {
                regexText = "\\n*";
            }

            this.after = this.after.replace(new re(regexText, ""), replacementText);
        }
    };

    // end of Chunks

    // A collection of the important regions on the page.
    // Cached so we don't have to keep traversing the DOM.
    // Also holds ieCachedRange and ieCachedScrollTop, where necessary; working around
    // this issue:
    // Internet explorer has problems with CSS sprite buttons that use HTML
    // lists.  When you click on the background image "button", IE will
    // select the non-existent link text and discard the selection in the
    // textarea.  The solution to this is to cache the textarea selection
    // on the button's mousedown event and set a flag.  In the part of the
    // code where we need to grab the selection, we check for the flag
    // and, if it's set, use the cached area instead of querying the
    // textarea.
    //
    // This ONLY affects Internet Explorer (tested on versions 6, 7
    // and 8) and ONLY on button clicks.  Keyboard shortcuts work
    // normally since the focus never leaves the textarea.
    function PanelCollection(postfix, aceEditor) {
        this.buttonBar = doc.getElementById("wmd-button-bar" + postfix);
        this.preview = doc.getElementById("wmd-preview" + postfix);
        this.input = aceEditor;
    };

    // Returns true if the DOM element is visible, false if it's hidden.
    // Checks if display is anything other than none.
    util.isVisible = function (elem) {

        if (window.getComputedStyle) {
            // Most browsers
            return window.getComputedStyle(elem, null).getPropertyValue("display") !== "none";
        }
        else if (elem.currentStyle) {
            // IE
            return elem.currentStyle["display"] !== "none";
        }
    };


    // Adds a listener callback to a DOM element which is fired on a specified
    // event.
    util.addEvent = function (elem, event, listener) {
        if (elem.attachEvent) {
            // IE only.  The "on" is mandatory.
            elem.attachEvent("on" + event, listener);
        }
        else {
            // Other browsers.
            elem.addEventListener(event, listener, false);
        }
    };


    // Removes a listener callback from a DOM element which is fired on a specified
    // event.
    util.removeEvent = function (elem, event, listener) {
        if (elem.detachEvent) {
            // IE only.  The "on" is mandatory.
            elem.detachEvent("on" + event, listener);
        }
        else {
            // Other browsers.
            elem.removeEventListener(event, listener, false);
        }
    };

    // Converts \r\n and \r to \n.
    util.fixEolChars = function (text) {
        text = text.replace(/\r\n/g, "\n");
        text = text.replace(/\r/g, "\n");
        return text;
    };

    // Extends a regular expression.  Returns a new RegExp
    // using pre + regex + post as the expression.
    // Used in a few functions where we have a base
    // expression and we want to pre- or append some
    // conditions to it (e.g. adding "$" to the end).
    // The flags are unchanged.
    //
    // regex is a RegExp, pre and post are strings.
    util.extendRegExp = function (regex, pre, post) {

        if (pre === null || pre === undefined) {
            pre = "";
        }
        if (post === null || post === undefined) {
            post = "";
        }

        var pattern = regex.toString();
        var flags;

        // Replace the flags with empty space and store them.
        pattern = pattern.replace(/\/([gim]*)$/, function (wholeMatch, flagsPart) {
            flags = flagsPart;
            return "";
        });

        // Remove the slash delimiters on the regular expression.
        pattern = pattern.replace(/(^\/|\/$)/g, "");
        pattern = pre + pattern + post;

        return new re(pattern, flags);
    }

    // UNFINISHED
    // The assignment in the while loop makes jslint cranky.
    // I'll change it to a better loop later.
    position.getTop = function (elem, isInner) {
        var result = elem.offsetTop;
        if (!isInner) {
            while (elem = elem.offsetParent) {
                result += elem.offsetTop;
            }
        }
        return result;
    };

    position.getHeight = function (elem) {
        return elem.offsetHeight || elem.scrollHeight;
    };

    position.getWidth = function (elem) {
        return elem.offsetWidth || elem.scrollWidth;
    };

    position.getPageSize = function () {

        var scrollWidth, scrollHeight;
        var innerWidth, innerHeight;

        // It's not very clear which blocks work with which browsers.
        if (self.innerHeight && self.scrollMaxY) {
            scrollWidth = doc.body.scrollWidth;
            scrollHeight = self.innerHeight + self.scrollMaxY;
        }
        else if (doc.body.scrollHeight > doc.body.offsetHeight) {
            scrollWidth = doc.body.scrollWidth;
            scrollHeight = doc.body.scrollHeight;
        }
        else {
            scrollWidth = doc.body.offsetWidth;
            scrollHeight = doc.body.offsetHeight;
        }

        if (self.innerHeight) {
            // Non-IE browser
            innerWidth = self.innerWidth;
            innerHeight = self.innerHeight;
        }
        else if (doc.documentElement && doc.documentElement.clientHeight) {
            // Some versions of IE (IE 6 w/ a DOCTYPE declaration)
            innerWidth = doc.documentElement.clientWidth;
            innerHeight = doc.documentElement.clientHeight;
        }
        else if (doc.body) {
            // Other versions of IE
            innerWidth = doc.body.clientWidth;
            innerHeight = doc.body.clientHeight;
        }

        var maxWidth = Math.max(scrollWidth, innerWidth);
        var maxHeight = Math.max(scrollHeight, innerHeight);
        return [maxWidth, maxHeight, innerWidth, innerHeight];
    };

    /*benweet
    // Handles pushing and popping TextareaStates for undo/redo commands.
    // I should rename the stack variables to list.
    function UndoManager(callback, panels) {

        var undoObj = this;
        var undoStack = []; // A stack of undo states
        var stackPtr = 0; // The index of the current state
        var mode = "none";
        var lastState; // The last state
        var timer; // The setTimeout handle for cancelling the timer
        var inputStateObj;

        // Set the mode for later logic steps.
        var setMode = function (newMode, noSave) {
            if (mode != newMode) {
                mode = newMode;
                if (!noSave) {
                    saveState();
                }
            }

            if (!uaSniffed.isIE || mode != "moving") {
                timer = setTimeout(refreshState, 1);
            }
            else {
                inputStateObj = null;
            }
        };

        var refreshState = function (isInitialState) {
            inputStateObj = new TextareaState(panels, isInitialState);
            timer = undefined;
        };

        this.setCommandMode = function () {
            mode = "command";
            saveState();
            timer = setTimeout(refreshState, 0);
        };

        this.canUndo = function () {
            return stackPtr > 1;
        };

        this.canRedo = function () {
            if (undoStack[stackPtr + 1]) {
                return true;
            }
            return false;
        };

        // Removes the last state and restores it.
        this.undo = function () {

            if (undoObj.canUndo()) {
                if (lastState) {
                    // What about setting state -1 to null or checking for undefined?
                    lastState.restore();
                    lastState = null;
                }
                else {
                    undoStack[stackPtr] = new TextareaState(panels);
                    undoStack[--stackPtr].restore();

                    if (callback) {
                        callback();
                    }
                }
            }

            mode = "none";
            panels.input.focus();
            refreshState();
        };

        // Redo an action.
        this.redo = function () {

            if (undoObj.canRedo()) {

                undoStack[++stackPtr].restore();

                if (callback) {
                    callback();
                }
            }

            mode = "none";
            panels.input.focus();
            refreshState();
        };

        // Push the input area state to the stack.
        var saveState = function () {
            var currState = inputStateObj || new TextareaState(panels);

            if (!currState) {
                return false;
            }
            if (mode == "moving") {
                if (!lastState) {
                    lastState = currState;
                }
                return;
            }
            if (lastState) {
                if (undoStack[stackPtr - 1].text != lastState.text) {
                    undoStack[stackPtr++] = lastState;
                }
                lastState = null;
            }
            undoStack[stackPtr++] = currState;
            undoStack[stackPtr + 1] = null;
            if (callback) {
                callback();
            }
        };

        var handleCtrlYZ = function (event) {

            var handled = false;

            if ((event.ctrlKey || event.metaKey) && !event.altKey) {

                // IE and Opera do not support charCode.
                var keyCode = event.charCode || event.keyCode;
                var keyCodeChar = String.fromCharCode(keyCode);

                switch (keyCodeChar.toLowerCase()) {

                    case "y":
                        undoObj.redo();
                        handled = true;
                        break;

                    case "z":
                        if (!event.shiftKey) {
                            undoObj.undo();
                        }
                        else {
                            undoObj.redo();
                        }
                        handled = true;
                        break;
                }
            }

            if (handled) {
                if (event.preventDefault) {
                    event.preventDefault();
                }
                if (window.event) {
                    window.event.returnValue = false;
                }
                return;
            }
        };

        // Set the mode depending on what is going on in the input area.
        var handleModeChange = function (event) {

            if (!event.ctrlKey && !event.metaKey) {

                var keyCode = event.keyCode;

                if ((keyCode >= 33 && keyCode <= 40) || (keyCode >= 63232 && keyCode <= 63235)) {
                    // 33 - 40: page up/dn and arrow keys
                    // 63232 - 63235: page up/dn and arrow keys on safari
                    setMode("moving");
                }
                else if (keyCode == 8 || keyCode == 46 || keyCode == 127) {
                    // 8: backspace
                    // 46: delete
                    // 127: delete
                    setMode("deleting");
                }
                else if (keyCode == 13) {
                    // 13: Enter
                    setMode("newlines");
                }
                else if (keyCode == 27) {
                    // 27: escape
                    setMode("escape");
                }
                else if ((keyCode < 16 || keyCode > 20) && keyCode != 91) {
                    // 16-20 are shift, etc.
                    // 91: left window key
                    // I think this might be a little messed up since there are
                    // a lot of nonprinting keys above 20.
                    setMode("typing");
                }
            }
        };

        var setEventHandlers = function () {
            util.addEvent(panels.input, "keypress", function (event) {
                // keyCode 89: y
                // keyCode 90: z
                if ((event.ctrlKey || event.metaKey) && !event.altKey && (event.keyCode == 89 || event.keyCode == 90)) {
                    event.preventDefault();
                }
            });

            var handlePaste = function () {
                if (uaSniffed.isIE || (inputStateObj && inputStateObj.text != panels.input.value)) {
                    if (timer == undefined) {
                        mode = "paste";
                        saveState();
                        refreshState();
                    }
                }
            };

            //util.addEvent(panels.input, "keydown", handleCtrlYZ);
            util.addEvent(panels.input, "keydown", handleModeChange);
            util.addEvent(panels.input, "mousedown", function () {
                setMode("moving");
            });

            panels.input.onpaste = handlePaste;
            panels.input.ondrop = handlePaste;
        };

        var init = function () {
            setEventHandlers();
            refreshState(true);
            //Not necessary
            //saveState();
        };
        
        this.reinit = function(content, start, end, scrollTop) {
            undoStack = [];
            stackPtr = 0;
            mode = "none";
            lastState = undefined;
            timer = undefined;
            refreshState();
            inputStateObj.text = content;
            inputStateObj.start = start;
            inputStateObj.end = end;
            inputStateObj.scrollTop = scrollTop;
            inputStateObj.setInputAreaSelection();
            saveState();
        };
        this.setMode = setMode;

        init();
    }

    // end of UndoManager
    */

    // The input textarea state/contents.
    // This is used to implement undo/redo by the undo manager.
    function TextareaState(panels, isInitialState) {

        // Aliases
        var stateObj = this;
        var inputArea = panels.input;
        this.init = function () {
            /*benweet
            if (!util.isVisible(inputArea)) {
                return;
            }
            if (!isInitialState && doc.activeElement && doc.activeElement !== inputArea) { // this happens when tabbing out of the input box
                return;
            }
            */

            var Range = ace.require('ace/range').Range;
            (function(range) {
                stateObj.before = inputArea.session.getTextRange(new Range(0,0,range.start.row, range.start.column));
                stateObj.selection = inputArea.session.getTextRange();
                stateObj.after = inputArea.session.getTextRange(new Range(range.end.row, range.end.column, Number.MAX_VALUE, Number.MAX_VALUE));
            })(inputArea.selection.getRange());
            this.text = [this.before, this.selection, this.after].join('');
            this.length = this.text.length;
            this.setInputAreaSelectionStartEnd();
            this.scrollTop = inputArea.renderer.getScrollTop();
            /*benweet
            if (!this.text && inputArea.selectionStart || inputArea.selectionStart === 0) {
                this.text = inputArea.value;
            }
            */
        }

        // Sets the selected text in the input box after we've performed an
        // operation.
        this.setInputAreaSelection = function () {

            var Range = ace.require('ace/range').Range;
            inputArea.selection.setSelectionRange((function(posStart, posEnd) {
                return new Range(posStart.row, posStart.column, posEnd.row, posEnd.column);
            })(inputArea.session.doc.indexToPosition(stateObj.start), inputArea.session.doc.indexToPosition(stateObj.end)));
            inputArea.renderer.scrollToY(stateObj.scrollTop);
            inputArea.focus();
            
            /*benweet
            if (!util.isVisible(inputArea)) {
                return;
            }

            if (inputArea.selectionStart !== undefined && !uaSniffed.isOpera) {

                inputArea.focus();
                inputArea.selectionStart = stateObj.start;
                inputArea.selectionEnd = stateObj.end;
                inputArea.scrollTop = stateObj.scrollTop;
            }
            else if (doc.selection) {

                if (doc.activeElement && doc.activeElement !== inputArea) {
                    return;
                }

                inputArea.focus();
                var range = inputArea.createTextRange();
                range.moveStart("character", -inputArea.value.length);
                range.moveEnd("character", -inputArea.value.length);
                range.moveEnd("character", stateObj.end);
                range.moveStart("character", stateObj.start);
                range.select();
            }
            */
        };

        this.setInputAreaSelectionStartEnd = function () {
            
            stateObj.start = stateObj.before.length;
            stateObj.end = stateObj.after.length;
            
            /*benweet
            if (!panels.ieCachedRange && (inputArea.selectionStart || inputArea.selectionStart === 0)) {

                stateObj.start = inputArea.selectionStart;
                stateObj.end = inputArea.selectionEnd;
            }
            else if (doc.selection) {

                stateObj.text = util.fixEolChars(inputArea.value);

                // IE loses the selection in the textarea when buttons are
                // clicked.  On IE we cache the selection. Here, if something is cached,
                // we take it.
                var range = panels.ieCachedRange || doc.selection.createRange();

                var fixedRange = util.fixEolChars(range.text);
                var marker = "\x07";
                var markedRange = marker + fixedRange + marker;
                range.text = markedRange;
                var inputText = util.fixEolChars(inputArea.value);

                range.moveStart("character", -markedRange.length);
                range.text = fixedRange;

                stateObj.start = inputText.indexOf(marker);
                stateObj.end = inputText.lastIndexOf(marker) - marker.length;

                var len = stateObj.text.length - util.fixEolChars(inputArea.value).length;

                if (len) {
                    range.moveStart("character", -fixedRange.length);
                    while (len--) {
                        fixedRange += "\n";
                        stateObj.end += 1;
                    }
                    range.text = fixedRange;
                }

                if (panels.ieCachedRange)
                    stateObj.scrollTop = panels.ieCachedScrollTop; // this is set alongside with ieCachedRange

                panels.ieCachedRange = null;

                this.setInputAreaSelection();
            }
            */
        };

        // Restore this state into the input area.
        this.restore = function () {
            // Here we could do editor.setValue but we want to update the less we can for undo management
            
            // Find the first modified char
            var startIndex = 0;
            var startIndexMax = stateObj.before.length; 
            while(startIndex < startIndexMax) {
                if(stateObj.before.charCodeAt(startIndex) !== stateObj.text.charCodeAt(startIndex))
                    break;
                startIndex++;
            }
            // Find the last modified char
            var endIndex = 0;
            var endIndexMax = stateObj.after.length;
            var beforeMaxOffset = stateObj.after.length - 1;
            var afterMaxOffset = stateObj.text.length - 1;
            while(endIndex < endIndexMax) {
                if(stateObj.after.charCodeAt(beforeMaxOffset - endIndex) !== stateObj.text.charCodeAt(afterMaxOffset - endIndex))
                    break;
                endIndex++;
            }
            
            var Range = ace.require('ace/range').Range;
            var range = (function(posStart, posEnd) {
                return new Range(posStart.row, posStart.column, posEnd.row, posEnd.column);
            })(inputArea.session.doc.indexToPosition(startIndex), inputArea.session.doc.indexToPosition(stateObj.length - endIndex));
            inputArea.session.replace(range, stateObj.text.substring(startIndex, afterMaxOffset - endIndex + 1));
            this.setInputAreaSelection();

            /*benweet
            if (stateObj.text != undefined && stateObj.text != inputArea.value) {
                inputArea.value = stateObj.text;
            }
            inputArea.scrollTop = stateObj.scrollTop;
            */
        };

        // Gets a collection of HTML chunks from the inptut textarea.
        this.getChunks = function () {

            var chunk = new Chunks();
            chunk.before = stateObj.before;
            chunk.startTag = "";
            chunk.selection = stateObj.selection;
            chunk.endTag = "";
            chunk.after = stateObj.after;
            chunk.scrollTop = stateObj.scrollTop;

            return chunk;
        };

        // Sets the TextareaState properties given a chunk of markdown.
        this.setChunks = function (chunk) {

            chunk.before = chunk.before + chunk.startTag;
            chunk.after = chunk.endTag + chunk.after;

            this.start = chunk.before.length;
            this.end = chunk.before.length + chunk.selection.length;
            this.text = chunk.before + chunk.selection + chunk.after;
            this.scrollTop = chunk.scrollTop;
        };
        this.init();
    };

    function PreviewManager(converter, panels, previewRefreshCallback, previewWrapper) {

        var managerObj = this;
        var timeout;
        var elapsedTime;
        var oldInputText;
        var maxDelay = 3000;
        var startType = "delayed"; // The other legal value is "manual"

        // Adds event listeners to elements
        /*benweet
        var setupEvents = function (inputElem, listener) {

            util.addEvent(inputElem, "input", listener);
            inputElem.onpaste = listener;
            inputElem.ondrop = listener;

            util.addEvent(inputElem, "keypress", listener);
            util.addEvent(inputElem, "keydown", listener);
        };
        */

        var getDocScrollTop = function () {

            var result = 0;

            if (window.innerHeight) {
                result = window.pageYOffset;
            }
            else
                if (doc.documentElement && doc.documentElement.scrollTop) {
                    result = doc.documentElement.scrollTop;
                }
                else
                    if (doc.body) {
                        result = doc.body.scrollTop;
                    }

            return result;
        };

        var makePreviewHtml = function () {

            // If there is no registered preview panel
            // there is nothing to do.
            if (!panels.preview)
                return;


            var text = panels.input.getValue();
            if (text && text == oldInputText) {
                return; // Input text hasn't changed.
            }
            else {
                oldInputText = text;
            }

            var prevTime = new Date().getTime();

            text = converter.makeHtml(text);

            // Calculate the processing time of the HTML creation.
            // It's used as the delay time in the event listener.
            var currTime = new Date().getTime();
            elapsedTime = currTime - prevTime;

            pushPreviewHtml(text);
        };
        if(previewWrapper !== undefined) {
            makePreviewHtml = previewWrapper(makePreviewHtml);
        }

        // setTimeout is already used.  Used as an event listener.
        var applyTimeout = function () {

            if (timeout) {
                clearTimeout(timeout);
                timeout = undefined;
            }

            if (startType !== "manual") {

                var delay = 0;

                if (startType === "delayed") {
                    delay = elapsedTime;
                }

                if (delay > maxDelay) {
                    delay = maxDelay;
                }
                timeout = setTimeout(makePreviewHtml, delay);
            }
        };

        var getScaleFactor = function (panel) {
            if (panel.scrollHeight <= panel.clientHeight) {
                return 1;
            }
            return panel.scrollTop / (panel.scrollHeight - panel.clientHeight);
        };

        var setPanelScrollTops = function () {
            if (panels.preview) {
                panels.preview.scrollTop = (panels.preview.scrollHeight - panels.preview.clientHeight) * getScaleFactor(panels.preview);
            }
        };

        this.refresh = function (requiresRefresh) {

            if (requiresRefresh) {
                oldInputText = "";
                makePreviewHtml();
            }
            else {
                applyTimeout();
            }
        };

        this.processingTime = function () {
            return elapsedTime;
        };

        var isFirstTimeFilled = true;

        // IE doesn't let you use innerHTML if the element is contained somewhere in a table
        // (which is the case for inline editing) -- in that case, detach the element, set the
        // value, and reattach. Yes, that *is* ridiculous.
        var ieSafePreviewSet = function (text) {
            var preview = panels.preview;
            var parent = preview.parentNode;
            var sibling = preview.nextSibling;
            parent.removeChild(preview);
            preview.innerHTML = text;
            if (!sibling)
                parent.appendChild(preview);
            else
                parent.insertBefore(preview, sibling);
        }

        var nonSuckyBrowserPreviewSet = function (text) {
            panels.preview.innerHTML = text;
        }

        var previewSetter;

        var previewSet = function (text) {
            if (previewSetter)
                return previewSetter(text);

            try {
                nonSuckyBrowserPreviewSet(text);
                previewSetter = nonSuckyBrowserPreviewSet;
            } catch (e) {
                previewSetter = ieSafePreviewSet;
                previewSetter(text);
            }
        };

        var pushPreviewHtml = function (text) {

            var emptyTop = position.getTop(panels.input) - getDocScrollTop();

            if (panels.preview) {
                previewSet(text);
                previewRefreshCallback();
            }

            setPanelScrollTops();

            if (isFirstTimeFilled) {
                isFirstTimeFilled = false;
                return;
            }

            var fullTop = position.getTop(panels.input) - getDocScrollTop();

            if (uaSniffed.isIE) {
                setTimeout(function () {
                    window.scrollBy(0, fullTop - emptyTop);
                }, 0);
            }
            else {
                window.scrollBy(0, fullTop - emptyTop);
            }
        };

        var init = function () {

            /*benweet
            setupEvents(panels.input, applyTimeout);
            */
            panels.input.session.on('change', applyTimeout);
            //Not necessary
            //makePreviewHtml();

            if (panels.preview) {
                panels.preview.scrollTop = 0;
            }
        };

        init();
    };

    // Creates the background behind the hyperlink text entry box.
    // And download dialog
    // Most of this has been moved to CSS but the div creation and
    // browser-specific hacks remain here.
    ui.createBackground = function () {

        var background = doc.createElement("div"),
            style = background.style;
        
        background.className = "wmd-prompt-background";
        
        style.position = "absolute";
        style.top = "0";

        style.zIndex = "1000";

        if (uaSniffed.isIE) {
            style.filter = "alpha(opacity=50)";
        }
        else {
            style.opacity = "0.5";
        }

        var pageSize = position.getPageSize();
        style.height = pageSize[1] + "px";

        if (uaSniffed.isIE) {
            style.left = doc.documentElement.scrollLeft;
            style.width = doc.documentElement.clientWidth;
        }
        else {
            style.left = "0";
            style.width = "100%";
        }

        doc.body.appendChild(background);
        return background;
    };

    // This simulates a modal dialog box and asks for the URL when you
    // click the hyperlink or image buttons.
    //
    // text: The html for the input box.
    // defaultInputText: The default value that appears in the input box.
    // callback: The function which is executed when the prompt is dismissed, either via OK or Cancel.
    //      It receives a single argument; either the entered text (if OK was chosen) or null (if Cancel
    //      was chosen).
    ui.prompt = function (text, defaultInputText, callback) {

        // These variables need to be declared at this level since they are used
        // in multiple functions.
        var dialog;         // The dialog box.
        var input;         // The text box where you enter the hyperlink.


        if (defaultInputText === undefined) {
            defaultInputText = "";
        }

        // Used as a keydown event handler. Esc dismisses the prompt.
        // Key code 27 is ESC.
        var checkEscape = function (key) {
            var code = (key.charCode || key.keyCode);
            if (code === 27) {
                close(true);
            }
        };

        // Dismisses the hyperlink input box.
        // isCancel is true if we don't care about the input text.
        // isCancel is false if we are going to keep the text.
        var close = function (isCancel) {
            util.removeEvent(doc.body, "keydown", checkEscape);
            var text = input.value;

            if (isCancel) {
                text = null;
            }
            else {
                // Fixes common pasting errors.
                text = text.replace(/^http:\/\/(https?|ftp):\/\//, '$1://');
                if (!/^(?:https?|ftp):\/\//.test(text))
                    text = 'http://' + text;
            }

            dialog.parentNode.removeChild(dialog);

            callback(text);
            return false;
        };



        // Create the text input box form/window.
        var createDialog = function () {

            // The main dialog box.
            dialog = doc.createElement("div");
            dialog.className = "wmd-prompt-dialog";
            dialog.style.padding = "10px;";
            dialog.style.position = "fixed";
            dialog.style.width = "400px";
            dialog.style.zIndex = "1001";

            // The dialog text.
            var question = doc.createElement("div");
            question.innerHTML = text;
            question.style.padding = "5px";
            dialog.appendChild(question);

            // The web form container for the text box and buttons.
            var form = doc.createElement("form"),
                style = form.style;
            form.onsubmit = function () { return close(false); };
            style.padding = "0";
            style.margin = "0";
            style.cssFloat = "left";
            style.width = "100%";
            style.textAlign = "center";
            style.position = "relative";
            dialog.appendChild(form);

            // The input text box
            input = doc.createElement("input");
            input.type = "text";
            input.value = defaultInputText;
            style = input.style;
            style.display = "block";
            style.width = "80%";
            style.marginLeft = style.marginRight = "auto";
            form.appendChild(input);

            // The ok button
            var okButton = doc.createElement("input");
            okButton.type = "button";
            okButton.onclick = function () { return close(false); };
            okButton.value = "OK";
            style = okButton.style;
            style.margin = "10px";
            style.display = "inline";
            style.width = "7em";


            // The cancel button
            var cancelButton = doc.createElement("input");
            cancelButton.type = "button";
            cancelButton.onclick = function () { return close(true); };
            cancelButton.value = "Cancel";
            style = cancelButton.style;
            style.margin = "10px";
            style.display = "inline";
            style.width = "7em";

            form.appendChild(okButton);
            form.appendChild(cancelButton);

            util.addEvent(doc.body, "keydown", checkEscape);
            dialog.style.top = "50%";
            dialog.style.left = "50%";
            dialog.style.display = "block";
            if (uaSniffed.isIE_5or6) {
                dialog.style.position = "absolute";
                dialog.style.top = doc.documentElement.scrollTop + 200 + "px";
                dialog.style.left = "50%";
            }
            doc.body.appendChild(dialog);

            // This has to be done AFTER adding the dialog to the form if you
            // want it to be centered.
            dialog.style.marginTop = -(position.getHeight(dialog) / 2) + "px";
            dialog.style.marginLeft = -(position.getWidth(dialog) / 2) + "px";

        };

        // Why is this in a zero-length timeout?
        // Is it working around a browser bug?
        setTimeout(function () {

            createDialog();

            var defTextLen = defaultInputText.length;
            if (input.selectionStart !== undefined) {
                input.selectionStart = 0;
                input.selectionEnd = defTextLen;
            }
            else if (input.createTextRange) {
                var range = input.createTextRange();
                range.collapse(false);
                range.moveStart("character", -defTextLen);
                range.moveEnd("character", defTextLen);
                range.select();
            }

            input.focus();
        }, 0);
    };

    function UIManager(postfix, panels, undoManager, previewManager, commandManager, helpOptions, getString, getKey) {
        var getStringAndKey = function (identifier) { return getString(identifier) + ' ' + getKey(identifier); };

        var inputBox = panels.input,
            buttons = {}; // buttons.undo, buttons.link, etc. The actual DOM elements.

        this.setUndoRedoButtonStates = function() {
            setTimeout(function() {
                setupButton(buttons.undo, inputBox.session.getUndoManager().hasUndo());
                setupButton(buttons.redo, inputBox.session.getUndoManager().hasRedo());
            }, 50);
        };

        var that = this;
        makeSpritedButtonRow();

        var keyEvent = "keydown";
        if (uaSniffed.isOpera) {
            keyEvent = "keypress";
        }

        function addKeyCmd(identifierList) {
            if(identifierList.length === 0) {
                return;
            }
            var identifier = identifierList.pop();
            inputBox.commands.addCommand({
                name: getString(identifier),
                bindKey: keyStrokes[identifier],
                exec: function(editor) {
                    doClick(buttons[identifier]);
                },
            });
            addKeyCmd(identifierList);
        }
        addKeyCmd(['bold', 'italic', 'link', 'quote', 'code', 'image', 'olist', 'ulist', 'heading', 'hr']);
        
        /*benweet
        util.addEvent(inputBox, keyEvent, function (key) {

            // Check to see if we have a button key and, if so execute the callback.
            if ((key.ctrlKey || key.metaKey) && !key.altKey) {

                var keyCode = key.charCode || key.keyCode;
                var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();

                switch (keyCodeStr) {
                    case "b":
                        doClick(buttons.bold);
                        break;
                    case "i":
                        doClick(buttons.italic);
                        break;
                    case "l":
                        doClick(buttons.link);
                        break;
                    case "q":
                        doClick(buttons.quote);
                        break;
                    case "k":
                        doClick(buttons.code);
                        break;
                    case "g":
                        doClick(buttons.image);
                        break;
                    case "o":
                        doClick(buttons.olist);
                        break;
                    case "u":
                        doClick(buttons.ulist);
                        break;
                    case "h":
                        doClick(buttons.heading);
                        break;
                    case "r":
                        doClick(buttons.hr);
                        break;
                    case "y":
                        doClick(buttons.redo);
                        break;
                    case "z":
                        if (key.shiftKey) {
                            doClick(buttons.redo);
                        }
                        else {
                            doClick(buttons.undo);
                        }
                        break;
                    case "v":
                        undoManager.setMode("typing");
                        return;
                    case "x":
                        undoManager.setMode("deleting");
                        return;
                    default:
                        return;
                }


                if (key.preventDefault) {
                    key.preventDefault();
                }

                if (window.event) {
                    window.event.returnValue = false;
                }
            }
        });

        // Auto-indent on shift-enter
        util.addEvent(inputBox, "keyup", function (key) {
            if (key.shiftKey && !key.ctrlKey && !key.metaKey) {
                var keyCode = key.charCode || key.keyCode;
                // Character 13 is Enter
                if (keyCode === 13) {
                    var fakeButton = {};
                    fakeButton.textOp = bindCommand("doAutoindent");
                    doClick(fakeButton);
                }
            }
        });

        // special handler because IE clears the context of the textbox on ESC
        if (uaSniffed.isIE) {
            util.addEvent(inputBox, "keydown", function (key) {
                var code = key.keyCode;
                if (code === 27) {
                    return false;
                }
            });
        }
        */
       
        // life 新添加函数
        // life
        // isImage 2015/3/1
        function insertLinkLife(link, text, isImage) {
            inputBox.focus();
            if (undoManager) {
                undoManager.setCommandMode();
            }

            var state = new TextareaState(panels);

            if (!state) {
                return;
            }

            var chunks = state.getChunks(); // 得到chunk
            var fixupInputArea = function () {
                inputBox.focus();

                if (chunks) {
                    state.setChunks(chunks);
                }

                state.restore();
                previewManager.refresh();
            };

            var a = commandProto.insertLink(chunks, fixupInputArea, link, text, isImage);
            if(!a) fixupInputArea();
        }
       
        // life
        MD.insertLink = insertLinkLife;
        MD.insertLink2 = insertLinkLife;

        // Perform the button's action.
        function doClick(button) {

            inputBox.focus();
            var linkOrImage = button.id == "wmd-link-button" || button.id == "wmd-image-button";

            if (button.textOp) {

                if (undoManager && !linkOrImage) {
                    undoManager.setCommandMode();
                }

                var state = new TextareaState(panels);

                if (!state) {
                    return;
                }

                var chunks = state.getChunks();

                // Some commands launch a "modal" prompt dialog.  Javascript
                // can't really make a modal dialog box and the WMD code
                // will continue to execute while the dialog is displayed.
                // This prevents the dialog pattern I'm used to and means
                // I can't do something like this:
                //
                // var link = CreateLinkDialog();
                // makeMarkdownLink(link);
                //
                // Instead of this straightforward method of handling a
                // dialog I have to pass any code which would execute
                // after the dialog is dismissed (e.g. link creation)
                // in a function parameter.
                //
                // Yes this is awkward and I think it sucks, but there's
                // no real workaround.  Only the image and link code
                // create dialogs and require the function pointers.
                var fixupInputArea = function () {

                    inputBox.focus();

                    if (chunks) {
                        state.setChunks(chunks);
                    }

                    state.restore();
                    previewManager.refresh();
                };

                var noCleanup = button.textOp(chunks, fixupInputArea);

                if (!noCleanup) {
                    fixupInputArea();
                    /*benweet
                    if(!linkOrImage) {
                        inputBox.dispatchEvent(new Event('input'));
                    }
                    */
                }

            }

            if (button.execute) {
                button.execute(undoManager);
            }
        };

        function setupButton(button, isEnabled) {

            var normalYShift = "0px";
            var disabledYShift = "-20px";
            var highlightYShift = "-40px";
            var image = button.getElementsByTagName("span")[0];
            button.className = button.className.replace(/ disabled/g, "");
            if (isEnabled) {
                image.style.backgroundPosition = button.XShift + " " + normalYShift;
                button.onmouseover = function () {
                    image.style.backgroundPosition = this.XShift + " " + highlightYShift;
                };

                button.onmouseout = function () {
                    image.style.backgroundPosition = this.XShift + " " + normalYShift;
                };

                // IE tries to select the background image "button" text (it's
                // implemented in a list item) so we have to cache the selection
                // on mousedown.
                if (uaSniffed.isIE) {
                    button.onmousedown = function () {
                        if (doc.activeElement && doc.activeElement !== panels.input) { // we're not even in the input box, so there's no selection
                            return;
                        }
                        panels.ieCachedRange = document.selection.createRange();
                        panels.ieCachedScrollTop = panels.input.renderer.getScrollTop();
                    };
                }

                if (!button.isHelp) {
                    button.onclick = function () {
                        if (this.onmouseout) {
                            this.onmouseout();
                        }
                        doClick(this);
                        return false;
                    }
                }
            }
            else {
                image.style.backgroundPosition = button.XShift + " " + disabledYShift;
                button.onmouseover = button.onmouseout = button.onclick = function () { };
                button.className += " disabled";
            }
        }

        function bindCommand(method) {
            if (typeof method === "string")
                method = commandManager[method];
            return function () { method.apply(commandManager, arguments); }
        }

        function makeSpritedButtonRow() {

            var buttonBar = panels.buttonBar;

            var normalYShift = "0px";
            var disabledYShift = "-20px";
            var highlightYShift = "-40px";

            var buttonRow = document.createElement("ul");
            buttonRow.id = "wmd-button-row" + postfix;
            buttonRow.className = 'wmd-button-row';
            buttonRow = buttonBar.appendChild(buttonRow);
            var xPosition = 0;
            var makeButton = function (id, title, XShift, textOp) {
                var button = document.createElement("li");
                button.className = "wmd-button";
                button.style.left = xPosition + "px";
                xPosition += 25;
                var buttonImage = document.createElement("span");
                button.id = id + postfix;
                button.appendChild(buttonImage);
                button.title = title;
                button.XShift = XShift;
                if (textOp)
                    button.textOp = textOp;
                setupButton(button, true);
                buttonRow.appendChild(button);
                return button;
            };

            buttons.bold = makeButton("wmd-bold-button", getStringAndKey("bold"), "0px", bindCommand("doBold"));
            buttons.italic = makeButton("wmd-italic-button", getStringAndKey("italic"), "-20px", bindCommand("doItalic"));
            // makeSpacer(1);
            buttons.link = makeButton("wmd-link-button", getStringAndKey("link"), "-40px", bindCommand(function (chunk, postProcessing) {
                return this.doLinkOrImage(chunk, postProcessing, false);
            }));
            buttons.quote = makeButton("wmd-quote-button", getStringAndKey("quote"), "-60px", bindCommand("doBlockquote"));
            buttons.code = makeButton("wmd-code-button", getStringAndKey("code"), "-80px", bindCommand("doCode"));
            buttons.image = makeButton("wmd-image-button", getStringAndKey("image"), "-100px", bindCommand(function (chunk, postProcessing) {
                return this.doLinkOrImage(chunk, postProcessing, true);
            }));
            // makeSpacer(2);
            buttons.olist = makeButton("wmd-olist-button", getStringAndKey("olist"), "-120px", bindCommand(function (chunk, postProcessing) {
                this.doList(chunk, postProcessing, true);
            }));
            buttons.ulist = makeButton("wmd-ulist-button", getStringAndKey("ulist"), "-140px", bindCommand(function (chunk, postProcessing) {
                this.doList(chunk, postProcessing, false);
            }));
            buttons.heading = makeButton("wmd-heading-button", getStringAndKey("heading"), "-160px", bindCommand("doHeading"));
            buttons.hr = makeButton("wmd-hr-button", getStringAndKey("hr"), "-180px", bindCommand("doHorizontalRule"));
            // makeSpacer(3);
            buttons.undo = makeButton("wmd-undo-button", getStringAndKey("undo"), "-200px", null);
            buttons.undo.execute = function (manager) { inputBox.session.getUndoManager().undo(); };

            buttons.redo = makeButton("wmd-redo-button", getStringAndKey("redo"), "-220px", null);
            buttons.redo.execute = function (manager) { inputBox.session.getUndoManager().redo(); };

            if (helpOptions) {
                var helpButton = document.createElement("li");
                var helpButtonImage = document.createElement("span");
                helpButton.appendChild(helpButtonImage);
                helpButton.className = "wmd-button wmd-help-button";
                helpButton.id = "wmd-help-button" + postfix;
                helpButton.XShift = "-240px";
                helpButton.isHelp = true;
                helpButton.style.right = "0px";
                helpButton.title = getString("help");
                helpButton.onclick = helpOptions.handler;

                setupButton(helpButton, true);
                buttonRow.appendChild(helpButton);
                buttons.help = helpButton;
            }

            that.setUndoRedoButtonStates();
            inputBox.session.on('change', function() {
                that.setUndoRedoButtonStates();
            });
        }

        this.buttons = buttons;
        this.setButtonState = setupButton;

    }

    function CommandManager(pluginHooks, getString) {
        this.hooks = pluginHooks;
        this.getString = getString;
    }

    var commandProto = CommandManager.prototype;

    // The markdown symbols - 4 spaces = code, > = blockquote, etc.
    commandProto.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";

    // Remove markdown symbols from the chunk selection.
    commandProto.unwrap = function (chunk) {
        var txt = new re("([^\\n])\\n(?!(\\n|" + this.prefixes + "))", "g");
        chunk.selection = chunk.selection.replace(txt, "$1 $2");
    };

    commandProto.wrap = function (chunk, len) {
        this.unwrap(chunk);
        var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm"),
            that = this;

        chunk.selection = chunk.selection.replace(regex, function (line, marked) {
            if (new re("^" + that.prefixes, "").test(line)) {
                return line;
            }
            return marked + "\n";
        });

        chunk.selection = chunk.selection.replace(/\s+$/, "");
    };

    commandProto.doBold = function (chunk, postProcessing) {
        return this.doBorI(chunk, postProcessing, 2, this.getString("boldexample"));
    };

    commandProto.doItalic = function (chunk, postProcessing) {
        return this.doBorI(chunk, postProcessing, 1, this.getString("italicexample"));
    };

    // chunk: The selected region that will be enclosed with */**
    // nStars: 1 for italics, 2 for bold
    // insertText: If you just click the button without highlighting text, this gets inserted
    commandProto.doBorI = function (chunk, postProcessing, nStars, insertText) {

        // Get rid of whitespace and fixup newlines.
        chunk.trimWhitespace();
        chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");

        // Look for stars before and after.  Is the chunk already marked up?
        // note that these regex matches cannot fail
        var starsBefore = /(\**$)/.exec(chunk.before)[0];
        var starsAfter = /(^\**)/.exec(chunk.after)[0];

        var prevStars = Math.min(starsBefore.length, starsAfter.length);

        // Remove stars if we have to since the button acts as a toggle.
        if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
            chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
            chunk.after = chunk.after.replace(re("^[*]{" + nStars + "}", ""), "");
        }
        else if (!chunk.selection && starsAfter) {
            // It's not really clear why this code is necessary.  It just moves
            // some arbitrary stuff around.
            chunk.after = chunk.after.replace(/^([*_]*)/, "");
            chunk.before = chunk.before.replace(/(\s?)$/, "");
            var whitespace = re.$1;
            chunk.before = chunk.before + starsAfter + whitespace;
        }
        else {

            // In most cases, if you don't have any selected text and click the button
            // you'll get a selected, marked up region with the default text inserted.
            if (!chunk.selection && !starsAfter) {
                chunk.selection = insertText;
            }

            // Add the true markup.
            var markup = nStars <= 1 ? "*" : "**"; // shouldn't the test be = ?
            chunk.before = chunk.before + markup;
            chunk.after = markup + chunk.after;
        }

        return;
    };

    commandProto.stripLinkDefs = function (text, defsToAdd) {

        text = text.replace(/^[ ]{0,3}\[(\d+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|$)/gm,
            function (totalMatch, id, link, newlines, title) {
                defsToAdd[id] = totalMatch.replace(/\s*$/, "");
                if (newlines) {
                    // Strip the title and return that separately.
                    defsToAdd[id] = totalMatch.replace(/["(](.+?)[")]$/, "");
                    return newlines + title;
                }
                return "";
            });

        return text;
    };

    commandProto.addLinkDef = function (chunk, linkDef) {

        var refNumber = 0; // The current reference number
        var defsToAdd = {}; //
        // Start with a clean slate by removing all previous link definitions.
        chunk.before = this.stripLinkDefs(chunk.before, defsToAdd);
        chunk.selection = this.stripLinkDefs(chunk.selection, defsToAdd);
        chunk.after = this.stripLinkDefs(chunk.after, defsToAdd);

        var defs = "";
        var regex = /(\[)((?:\[[^\]]*\]|[^\[\]])*)(\][ ]?(?:\n[ ]*)?\[)(\d+)(\])/g;

        var addDefNumber = function (def) {
            refNumber++;
            def = def.replace(/^[ ]{0,3}\[(\d+)\]:/, "  [" + refNumber + "]:");
            defs += "\n" + def;
        };

        // note that
        // a) the recursive call to getLink cannot go infinite, because by definition
        //    of regex, inner is always a proper substring of wholeMatch, and
        // b) more than one level of nesting is neither supported by the regex
        //    nor making a lot of sense (the only use case for nesting is a linked image)
        var getLink = function (wholeMatch, before, inner, afterInner, id, end) {
            inner = inner.replace(regex, getLink);
            if (defsToAdd[id]) {
                addDefNumber(defsToAdd[id]);
                return before + inner + afterInner + refNumber + end;
            }
            return wholeMatch;
        };

        chunk.before = chunk.before.replace(regex, getLink);

        if (linkDef) {
            addDefNumber(linkDef);
        }
        else {
            chunk.selection = chunk.selection.replace(regex, getLink);
        }

        var refOut = refNumber;

        chunk.after = chunk.after.replace(regex, getLink);

        if (chunk.after) {
            chunk.after = chunk.after.replace(/\n*$/, "");
        }
        if (!chunk.after) {
            chunk.selection = chunk.selection.replace(/\n*$/, "");
        }

        chunk.after += "\n\n" + defs;

        return refOut;
    };

    // takes the line as entered into the add link/as image dialog and makes
    // sure the URL and the optinal title are "nice".
    function properlyEncoded(linkdef) {
        return linkdef.replace(/^\s*(.*?)(?:\s+"(.+)")?\s*$/, function (wholematch, link, title) {
            link = link.replace(/\?.*$/, function (querypart) {
                return querypart.replace(/\+/g, " "); // in the query string, a plus and a space are identical
            });
            link = decodeURIComponent(link); // unencode first, to prevent double encoding
            link = encodeURI(link).replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29');
            link = link.replace(/\?.*$/, function (querypart) {
                return querypart.replace(/\+/g, "%2b"); // since we replaced plus with spaces in the query part, all pluses that now appear where originally encoded
            });
            if (title) {
                title = title.trim ? title.trim() : title.replace(/^\s*/, "").replace(/\s*$/, "");
                title = title.replace(/"/g, "quot;").replace(/\(/g, "&#40;").replace(/\)/g, "&#41;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
            }
            return title ? link + ' "' + title + '"' : link;
        });
    }

    // life 添加
    commandProto.insertLink = function (chunk, postProcessing, link, text, isImage) {
        chunk.trimWhitespace();
        chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
        var background;

        if (chunk.endTag.length > 1 && chunk.startTag.length > 0) {

            chunk.startTag = chunk.startTag.replace(/!?\[/, "");
            chunk.endTag = "";
            this.addLinkDef(chunk, null);
        }
        else {
            
            // We're moving start and end tag back into the selection, since (as we're in the else block) we're not
            // *removing* a link, but *adding* one, so whatever findTags() found is now back to being part of the
            // link text. linkEnteredCallback takes care of escaping any brackets.
            chunk.selection = chunk.startTag + chunk.selection + chunk.endTag;
            chunk.startTag = chunk.endTag = "";

            if (/\n\n/.test(chunk.selection)) {
                this.addLinkDef(chunk, null);
                return;
            }
            var that = this;
            // The function to be executed when you enter a link and press OK or Cancel.
            // Marks up the link and adds the ref.
            var linkEnteredCallback = function (link) {
                background.parentNode.removeChild(background);

                if (link !== null) {
                    chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);

                    chunk.startTag = isImage ? "![" : "[";
                    //chunk.endTag = "][" + num + "]";
                    chunk.endTag = "](" + properlyEncoded(link) + ")";

                    chunk.selection = text;
                }
                postProcessing();
            };

            background = ui.createBackground();
            linkEnteredCallback(link);
            return true;
        }
    };

    commandProto.doLinkOrImage = function (chunk, postProcessing, isImage) {

        chunk.trimWhitespace();
        //chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
        chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\(.*?\))?/);

        var background;

        if (chunk.endTag.length > 1 && chunk.startTag.length > 0) {

            chunk.startTag = chunk.startTag.replace(/!?\[/, "");
            chunk.endTag = "";
            this.addLinkDef(chunk, null);

        }
        else {

            // We're moving start and end tag back into the selection, since (as we're in the else block) we're not
            // *removing* a link, but *adding* one, so whatever findTags() found is now back to being part of the
            // link text. linkEnteredCallback takes care of escaping any brackets.
            chunk.selection = chunk.startTag + chunk.selection + chunk.endTag;
            chunk.startTag = chunk.endTag = "";

            if (/\n\n/.test(chunk.selection)) {
                this.addLinkDef(chunk, null);
                return;
            }
            var that = this;
            // The function to be executed when you enter a link and press OK or Cancel.
            // Marks up the link and adds the ref.
            var linkEnteredCallback = function (link, text) {
                background.parentNode.removeChild(background);

                if (link !== null) {
                    // (                          $1
                    //     [^\\]                  anything that's not a backslash
                    //     (?:\\\\)*              an even number (this includes zero) of backslashes
                    // )
                    // (?=                        followed by
                    //     [[\]]                  an opening or closing bracket
                    // )
                    //
                    // In other words, a non-escaped bracket. These have to be escaped now to make sure they
                    // don't count as the end of the link or similar.
                    // Note that the actual bracket has to be a lookahead, because (in case of to subsequent brackets),
                    // the bracket in one match may be the "not a backslash" character in the next match, so it
                    // should not be consumed by the first match.
                    // The "prepend a space and finally remove it" steps makes sure there is a "not a backslash" at the
                    // start of the string, so this also works if the selection begins with a bracket. We cannot solve
                    // this by anchoring with ^, because in the case that the selection starts with two brackets, this
                    // would mean a zero-width match at the start. Since zero-width matches advance the string position,
                    // the first bracket could then not act as the "not a backslash" for the second.
                    chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);

                    /*
                    var linkDef = " [999]: " + properlyEncoded(link);

                    var num = that.addLinkDef(chunk, linkDef);
                    */
                    chunk.startTag = isImage ? "![" : "[";
                    // chunk.endTag = "][" + num + "]";
                    chunk.endTag = "](" + properlyEncoded(link) + ")";

                    if (!chunk.selection) {
                        var str = '';
                        if (text) {
                            str = text;
                        } else if (isImage) {
                            str = that.getString("imagedescription");
                        }
                        else {
                            str = that.getString("linkdescription");
                        }

                        chunk.selection = str;
                    }
                }
                postProcessing();
            };


            background = ui.createBackground();

            if (isImage) {
                if (!this.hooks.insertImageDialog(linkEnteredCallback))
                    ui.prompt(this.getString("imagedialog"), imageDefaultText, linkEnteredCallback);
            }
            else {
                if (!this.hooks.insertLinkDialog(linkEnteredCallback))
                	ui.prompt(this.getString("linkdialog"), linkDefaultText, linkEnteredCallback);
            }
            return true;
        }
    };

    // When making a list, hitting shift-enter will put your cursor on the next line
    // at the current indent level.
    commandProto.doAutoindent = function (chunk, postProcessing) {

        var commandMgr = this,
            fakeSelection = false;

        chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
        chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
        chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");

        // There's no selection, end the cursor wasn't at the end of the line:
        // The user wants to split the current list item / code line / blockquote line
        // (for the latter it doesn't really matter) in two. Temporarily select the
        // (rest of the) line to achieve this.
        if (!chunk.selection && !/^[ \t]*(?:\n|$)/.test(chunk.after)) {
            chunk.after = chunk.after.replace(/^[^\n]*/, function (wholeMatch) {
                chunk.selection = wholeMatch;
                return "";
            });
            fakeSelection = true;
        }

        if (/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)) {
            if (commandMgr.doList) {
                commandMgr.doList(chunk);
            }
        }
        if (/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)) {
            if (commandMgr.doBlockquote) {
                commandMgr.doBlockquote(chunk);
            }
        }
        if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
            if (commandMgr.doCode) {
                commandMgr.doCode(chunk);
            }
        }

        if (fakeSelection) {
            chunk.after = chunk.selection + chunk.after;
            chunk.selection = "";
        }
    };

    commandProto.doBlockquote = function (chunk, postProcessing) {

        chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
            function (totalMatch, newlinesBefore, text, newlinesAfter) {
                chunk.before += newlinesBefore;
                chunk.after = newlinesAfter + chunk.after;
                return text;
            });

        chunk.before = chunk.before.replace(/(>[ \t]*)$/,
            function (totalMatch, blankLine) {
                chunk.selection = blankLine + chunk.selection;
                return "";
            });

        chunk.selection = chunk.selection.replace(/^(\s|>)+$/, "");
        chunk.selection = chunk.selection || this.getString("quoteexample");

        // The original code uses a regular expression to find out how much of the
        // text *directly before* the selection already was a blockquote:

        /*
        if (chunk.before) {
        chunk.before = chunk.before.replace(/\n?$/, "\n");
        }
        chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
        function (totalMatch) {
        chunk.startTag = totalMatch;
        return "";
        });
        */

        // This comes down to:
        // Go backwards as many lines a possible, such that each line
        //  a) starts with ">", or
        //  b) is almost empty, except for whitespace, or
        //  c) is preceeded by an unbroken chain of non-empty lines
        //     leading up to a line that starts with ">" and at least one more character
        // and in addition
        //  d) at least one line fulfills a)
        //
        // Since this is essentially a backwards-moving regex, it's susceptible to
        // catstrophic backtracking and can cause the browser to hang;
        // see e.g. http://meta.stackoverflow.com/questions/9807.
        //
        // Hence we replaced this by a simple state machine that just goes through the
        // lines and checks for a), b), and c).

        var match = "",
            leftOver = "",
            line;
        if (chunk.before) {
            var lines = chunk.before.replace(/\n$/, "").split("\n");
            var inChain = false;
            for (var i = 0; i < lines.length; i++) {
                var good = false;
                line = lines[i];
                inChain = inChain && line.length > 0; // c) any non-empty line continues the chain
                if (/^>/.test(line)) {                // a)
                    good = true;
                    if (!inChain && line.length > 1)  // c) any line that starts with ">" and has at least one more character starts the chain
                        inChain = true;
                } else if (/^[ \t]*$/.test(line)) {   // b)
                    good = true;
                } else {
                    good = inChain;                   // c) the line is not empty and does not start with ">", so it matches if and only if we're in the chain
                }
                if (good) {
                    match += line + "\n";
                } else {
                    leftOver += match + line;
                    match = "\n";
                }
            }
            if (!/(^|\n)>/.test(match)) {             // d)
                leftOver += match;
                match = "";
            }
        }

        chunk.startTag = match;
        chunk.before = leftOver;

        // end of change

        /*benweet Don't really know the purpose of it but it is destructive
        
        if (chunk.after) {
            chunk.after = chunk.after.replace(/^\n?/, "\n");
        }

        chunk.after = chunk.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,
            function (totalMatch) {
                chunk.endTag = totalMatch;
                return "";
            }
        );
        */

        var replaceBlanksInTags = function (useBracket) {

            var replacement = useBracket ? "> " : "";

            if (chunk.startTag) {
                chunk.startTag = chunk.startTag.replace(/\n((>|\s)*)\n$/,
                    function (totalMatch, markdown) {
                        return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
                    });
            }
            if (chunk.endTag) {
                chunk.endTag = chunk.endTag.replace(/^\n((>|\s)*)\n/,
                    function (totalMatch, markdown) {
                        return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
                    });
            }
        };

        if (/^(?![ ]{0,3}>)/m.test(chunk.selection)) {
            this.wrap(chunk, SETTINGS.lineLength - 2);
            chunk.selection = chunk.selection.replace(/^/gm, "> ");
            replaceBlanksInTags(true);
            chunk.skipLines();
        } else {
            chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
            this.unwrap(chunk);
            replaceBlanksInTags(false);

            if (!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag) {
                chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
            }

            if (!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag) {
                chunk.endTag = chunk.endTag.replace(/^\n{0,2}/, "\n\n");
            }
        }

        chunk.selection = this.hooks.postBlockquoteCreation(chunk.selection);

        if (!/\n/.test(chunk.selection)) {
            chunk.selection = chunk.selection.replace(/^(> *)/,
            function (wholeMatch, blanks) {
                chunk.startTag += blanks;
                return "";
            });
        }
    };

    // 这里, 应该用 ``` ```
    commandProto.doCode = function (chunk, postProcessing) {

        var hasTextBefore = /\S[ ]*$/.test(chunk.before);
        var hasTextAfter = /^[ ]*\S/.test(chunk.after);

        // Use 'four space' markdown if the selection is on its own
        // line or is multiline.
        if ((!hasTextAfter && !hasTextBefore) || /\n/.test(chunk.selection)) {

            chunk.before = chunk.before.replace(/[ ]{4}$/,
                function (totalMatch) {
                    chunk.selection = totalMatch + chunk.selection;
                    return "";
                });

            var nLinesBack = 1;
            var nLinesForward = 1;

            if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
                nLinesBack = 0;
            }
            if (/^\n(\t|[ ]{4,})/.test(chunk.after)) {
                nLinesForward = 0;
            }

            chunk.skipLines(nLinesBack, nLinesForward);

            if (!chunk.selection) {
                chunk.startTag = "    ";
                chunk.selection = this.getString("codeexample");
            }
            else {
                if (/^[ ]{0,3}\S/m.test(chunk.selection)) {
                    if (/\n/.test(chunk.selection))
                        chunk.selection = chunk.selection.replace(/^/gm, "    ");
                    else // if it's not multiline, do not select the four added spaces; this is more consistent with the doList behavior
                        chunk.before += "    ";
                }
                else {
                    chunk.selection = chunk.selection.replace(/^(?:[ ]{4}|[ ]{0,3}\t)/gm, "");
                }
            }
        }
        else {
            // Use backticks (`) to delimit the code block.

            chunk.trimWhitespace();
            chunk.findTags(/`/, /`/);

            if (!chunk.startTag && !chunk.endTag) {
                chunk.startTag = chunk.endTag = "`";
                if (!chunk.selection) {
                    chunk.selection = this.getString("codeexample");
                }
            }
            else if (chunk.endTag && !chunk.startTag) {
                chunk.before += chunk.endTag;
                chunk.endTag = "";
            }
            else {
                chunk.startTag = chunk.endTag = "";
            }
        }
    };

    commandProto.doList = function (chunk, postProcessing, isNumberedList) {

        // These are identical except at the very beginning and end.
        // Should probably use the regex extension function to make this clearer.
        var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
        var nextItemsRegex = /^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;

        // The default bullet is a dash but others are possible.
        // This has nothing to do with the particular HTML bullet,
        // it's just a markdown bullet.
        var bullet = "-";

        // The number in a numbered list.
        var num = 1;

        // Get the item prefix - e.g. " 1. " for a numbered list, " - " for a bulleted list.
        var getItemPrefix = function () {
            var prefix;
            if (isNumberedList) {
                prefix = " " + num + ". ";
                num++;
            }
            else {
                prefix = " " + bullet + " ";
            }
            return prefix;
        };

        // Fixes the prefixes of the other list items.
        var getPrefixedItem = function (itemText) {

            // The numbering flag is unset when called by autoindent.
            if (isNumberedList === undefined) {
                isNumberedList = /^\s*\d/.test(itemText);
            }

            // Renumber/bullet the list element.
            itemText = itemText.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,
                function (_) {
                    return getItemPrefix();
                });

            return itemText;
        };

        chunk.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/, null);

        if (chunk.before && !/\n$/.test(chunk.before) && !/^\n/.test(chunk.startTag)) {
            chunk.before += chunk.startTag;
            chunk.startTag = "";
        }

        if (chunk.startTag) {

            var hasDigits = /\d+[.]/.test(chunk.startTag);
            chunk.startTag = "";
            chunk.selection = chunk.selection.replace(/\n[ ]{4}/g, "\n");
            this.unwrap(chunk);
            chunk.skipLines();

            if (hasDigits) {
                // Have to renumber the bullet points if this is a numbered list.
                chunk.after = chunk.after.replace(nextItemsRegex, getPrefixedItem);
            }
            if (isNumberedList == hasDigits) {
                return;
            }
        }

        var nLinesUp = 1;

        chunk.before = chunk.before.replace(previousItemsRegex,
            function (itemText) {
                if (/^\s*([*+-])/.test(itemText)) {
                    bullet = re.$1;
                }
                nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
                return getPrefixedItem(itemText);
            });

        if (!chunk.selection) {
            chunk.selection = this.getString("litem");
        }

        var prefix = getItemPrefix();

        var nLinesDown = 1;

        chunk.after = chunk.after.replace(nextItemsRegex,
            function (itemText) {
                nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
                return getPrefixedItem(itemText);
            });

        chunk.trimWhitespace(true);
        chunk.skipLines(nLinesUp, nLinesDown, true);
        chunk.startTag = prefix;
        var spaces = prefix.replace(/./g, " ");
        this.wrap(chunk, SETTINGS.lineLength - spaces.length);
        chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);

    };

    // 要改成 ## ### #### 
    // life 2015/7/12
    commandProto.doHeading = function (chunk, postProcessing) {
        // Remove leading/trailing whitespace and reduce internal spaces to single spaces.
        chunk.selection = chunk.selection.replace(/\s+/g, " ");
        chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/g, "");

        // If we clicked the button with no selected text, we just
        // make a level 2 hash header around some default text.
        if (!chunk.selection) {
            // 需要skip的时候 life
            if(chunk.before && (chunk.before[chunk.before.length - 1] != "\n")) {
                chunk.skipLines(1, 1);
            }
            chunk.startTag = "# ";
            chunk.selection = this.getString("headingexample");
            chunk.endTag = ""; // ##
            return;
        }

        chunk.findTags(/#+[ ]*/, /[ ]*#+/);
        // console.log(chunk);

        if(chunk.before && (chunk.before[chunk.before.length - 1] != "\n")) {
            chunk.skipLines(1, 1);
        }

        var beforeHLevel = 0;
        var startTag = chunk.startTag;
        if (/^#+[ ]*$/.test(startTag)) {
            startTag = startTag.replace(/ /g, '');
            beforeHLevel = startTag.length;
        }

        // [0, 4]
        var headerLevelToCreate = 0;
        if(beforeHLevel >= 0 && beforeHLevel <= 3) {
            headerLevelToCreate = beforeHLevel + 1;
        }
        if(beforeHLevel >= 4) {
            headerLevelToCreate = 0;
            chunk.startTag = '';
        }

        if (headerLevelToCreate > 0) {
            var header = "";
            while (headerLevelToCreate--) {
                header += "#";
            }
            header += " ";

            chunk.startTag = header;
        }
        return;
    };

    commandProto.doHorizontalRule = function (chunk, postProcessing) {
        chunk.startTag = "----------\n";
        chunk.selection = "";
        chunk.skipLines(1, 1, true);
    }

})();

define("pagedown-ace", function(){});

(function () {
  // A quick way to make sure we're only keeping span-level tags when we need to.
  // This isn't supposed to be foolproof. It's just a quick way to make sure we
  // keep all span-level tags returned by a pagedown converter. It should allow
  // all span-level tags through, with or without attributes.
  var inlineTags = new RegExp(['^(<\\/?(a|abbr|acronym|applet|area|b|basefont|',
                               'bdo|big|button|cite|code|del|dfn|em|figcaption|',
                               'font|i|iframe|img|input|ins|kbd|label|map|',
                               'mark|meter|object|param|progress|q|ruby|rp|rt|s|',
                               'samp|script|select|small|span|strike|strong|',
                               'sub|sup|textarea|time|tt|u|var|wbr)[^>]*>|',
                               '<(br)\\s?\\/?>)$'].join(''), 'i');

  /******************************************************************
   * Utility Functions                                              *
   *****************************************************************/

  // patch for ie7
  if (!Array.indexOf) {
    Array.prototype.indexOf = function(obj) {
      for (var i = 0; i < this.length; i++) {
        if (this[i] == obj) {
          return i;
        }
      }
      return -1;
    };
  }

  function trim(str) {
    return str.replace(/^\s+|\s+$/g, '');
  }

  function rtrim(str) {
    return str.replace(/\s+$/g, '');
  }

  // Remove one level of indentation from text. Indent is 4 spaces.
  function outdent(text) {
    return text.replace(new RegExp('^(\\t|[ ]{1,4})', 'gm'), '');
  }

  function contains(str, substr) {
    return str.indexOf(substr) != -1;
  }

  // Sanitize html, removing tags that aren't in the whitelist
  function sanitizeHtml(html, whitelist) {
    return html.replace(/<[^>]*>?/gi, function(tag) {
      return tag.match(whitelist) ? tag : '';
    });
  }

  // Merge two arrays, keeping only unique elements.
  function union(x, y) {
    var obj = {};
    for (var i = 0; i < x.length; i++)
       obj[x[i]] = x[i];
    for (i = 0; i < y.length; i++)
       obj[y[i]] = y[i];
    var res = [];
    for (var k in obj) {
      if (obj.hasOwnProperty(k))
        res.push(obj[k]);
    }
    return res;
  }

  // JS regexes don't support \A or \Z, so we add sentinels, as Pagedown
  // does. In this case, we add the ascii codes for start of text (STX) and
  // end of text (ETX), an idea borrowed from:
  // https://github.com/tanakahisateru/js-markdown-extra
  function addAnchors(text) {
    if(text.charAt(0) != '\x02')
      text = '\x02' + text;
    if(text.charAt(text.length - 1) != '\x03')
      text = text + '\x03';
    return text;
  }

  // Remove STX and ETX sentinels.
  function removeAnchors(text) {
    if(text.charAt(0) == '\x02')
      text = text.substr(1);
    if(text.charAt(text.length - 1) == '\x03')
      text = text.substr(0, text.length - 1);
    return text;
  }

  // Convert markdown within an element, retaining only span-level tags
  function convertSpans(text, extra) {
    return sanitizeHtml(convertAll(text, extra), inlineTags);
  }

  // Convert internal markdown using the stock pagedown converter
  function convertAll(text, extra) {
    var result = extra.blockGamutHookCallback(text);
    // We need to perform these operations since we skip the steps in the converter
    result = unescapeSpecialChars(result);
    result = result.replace(/~D/g, "$$").replace(/~T/g, "~");
    result = extra.previousPostConversion(result);
    return result;
  }

  // Convert escaped special characters
  function processEscapesStep1(text) {
    // Markdown extra adds two escapable characters, `:` and `|`
    return text.replace(/\\\|/g, '~I').replace(/\\:/g, '~i');
  }
  function processEscapesStep2(text) {
    return text.replace(/~I/g, '|').replace(/~i/g, ':');
  }

  // Duplicated from PageDown converter
  function unescapeSpecialChars(text) {
    // Swap back in all the special characters we've hidden.
    text = text.replace(/~E(\d+)E/g, function(wholeMatch, m1) {
      var charCodeToReplace = parseInt(m1);
      return String.fromCharCode(charCodeToReplace);
    });
    return text;
  }
  
  function slugify(text) {
    return text.toLowerCase()
    .replace(/\s+/g, '-') // Replace spaces with -
    .replace(/[^\w\-]+/g, '') // Remove all non-word chars
    .replace(/\-\-+/g, '-') // Replace multiple - with single -
    .replace(/^-+/, '') // Trim - from start of text
    .replace(/-+$/, ''); // Trim - from end of text
  }

  /*****************************************************************************
   * Markdown.Extra *
   ****************************************************************************/

  Markdown.Extra = function() {
    // For converting internal markdown (in tables for instance).
    // This is necessary since these methods are meant to be called as
    // preConversion hooks, and the Markdown converter passed to init()
    // won't convert any markdown contained in the html tags we return.
    this.converter = null;

    // Stores html blocks we generate in hooks so that
    // they're not destroyed if the user is using a sanitizing converter
    this.hashBlocks = [];
    
    // Stores footnotes
    this.footnotes = {};
    this.usedFootnotes = [];

    // Special attribute blocks for fenced code blocks and headers enabled.
    this.attributeBlocks = false;

    // Fenced code block options
    this.googleCodePrettify = false;
    this.highlightJs = false;

    // Table options
    this.tableClass = '';

    this.tabWidth = 4;
  };

  Markdown.Extra.init = function(converter, options) {
    // Each call to init creates a new instance of Markdown.Extra so it's
    // safe to have multiple converters, with different options, on a single page
    var extra = new Markdown.Extra();
    var postNormalizationTransformations = [];
    var preBlockGamutTransformations = [];
    var postSpanGamutTransformations = [];
    var postConversionTransformations = ["unHashExtraBlocks"];

    options = options || {};
    options.extensions = options.extensions || ["all"];
    if (contains(options.extensions, "all")) {
      options.extensions = ["tables", "fenced_code_gfm", "def_list", "attr_list", "footnotes", "smartypants", "strikethrough", "newlines"];
    }
    preBlockGamutTransformations.push("wrapHeaders");
    if (contains(options.extensions, "attr_list")) {
      postNormalizationTransformations.push("hashFcbAttributeBlocks");
      preBlockGamutTransformations.push("hashHeaderAttributeBlocks");
      postConversionTransformations.push("applyAttributeBlocks");
      extra.attributeBlocks = true;
    }
    if (contains(options.extensions, "fenced_code_gfm")) {
      // This step will convert fcb inside list items and blockquotes
      preBlockGamutTransformations.push("fencedCodeBlocks");
      // This extra step is to prevent html blocks hashing and link definition/footnotes stripping inside fcb
      postNormalizationTransformations.push("fencedCodeBlocks");
    }
    if (contains(options.extensions, "tables")) {
      preBlockGamutTransformations.push("tables");
    }
    if (contains(options.extensions, "def_list")) {
      preBlockGamutTransformations.push("definitionLists");
    }
    if (contains(options.extensions, "footnotes")) {
      postNormalizationTransformations.push("stripFootnoteDefinitions");
      preBlockGamutTransformations.push("doFootnotes");
      postConversionTransformations.push("printFootnotes");
    }
    if (contains(options.extensions, "smartypants")) {
      postConversionTransformations.push("runSmartyPants");
    }
    if (contains(options.extensions, "strikethrough")) {
      postSpanGamutTransformations.push("strikethrough");
    }
    if (contains(options.extensions, "newlines")) {
      postSpanGamutTransformations.push("newlines");
    }
    
    converter.hooks.chain("postNormalization", function(text) {
      return extra.doTransform(postNormalizationTransformations, text) + '\n';
    });

    converter.hooks.chain("preBlockGamut", function(text, blockGamutHookCallback) {
      // Keep a reference to the block gamut callback to run recursively
      extra.blockGamutHookCallback = blockGamutHookCallback;
      text = processEscapesStep1(text);
      text = extra.doTransform(preBlockGamutTransformations, text) + '\n';
      text = processEscapesStep2(text);
      return text;
    });

    converter.hooks.chain("postSpanGamut", function(text) {
      return extra.doTransform(postSpanGamutTransformations, text);
    });

    // Keep a reference to the hook chain running before doPostConversion to apply on hashed extra blocks
    extra.previousPostConversion = converter.hooks.postConversion;
    converter.hooks.chain("postConversion", function(text) {
      text = extra.doTransform(postConversionTransformations, text);
      // Clear state vars that may use unnecessary memory
      extra.hashBlocks = [];
      extra.footnotes = {};
      extra.usedFootnotes = [];
      return text;
    });

    if ("highlighter" in options) {
      extra.googleCodePrettify = options.highlighter === 'prettify';
      extra.highlightJs = options.highlighter === 'highlight';
    }

    if ("table_class" in options) {
      extra.tableClass = options.table_class;
    }

    extra.converter = converter;

    // Caller usually won't need this, but it's handy for testing.
    return extra;
  };

  // Do transformations
  Markdown.Extra.prototype.doTransform = function(transformations, text) {
    for(var i = 0; i < transformations.length; i++)
      text = this[transformations[i]](text);
    return text;
  };

  // Return a placeholder containing a key, which is the block's index in the
  // hashBlocks array. We wrap our output in a <p> tag here so Pagedown won't.
  Markdown.Extra.prototype.hashExtraBlock = function(block) {
    return '\n<p>~X' + (this.hashBlocks.push(block) - 1) + 'X</p>\n';
  };
  Markdown.Extra.prototype.hashExtraInline = function(block) {
    return '~X' + (this.hashBlocks.push(block) - 1) + 'X';
  };
  
  // Replace placeholder blocks in `text` with their corresponding
  // html blocks in the hashBlocks array.
  Markdown.Extra.prototype.unHashExtraBlocks = function(text) {
    var self = this;
    function recursiveUnHash() {
      var hasHash = false;
      text = text.replace(/(?:<p>)?~X(\d+)X(?:<\/p>)?/g, function(wholeMatch, m1) {
        hasHash = true;
        var key = parseInt(m1, 10);
        return self.hashBlocks[key];
      });
      if(hasHash === true) {
        recursiveUnHash();
      }
    }
    recursiveUnHash();
    return text;
  };
  
  // Wrap headers to make sure they won't be in def lists
  Markdown.Extra.prototype.wrapHeaders = function(text) {
    function wrap(text) {
      return '\n' + text + '\n';
    }
    text = text.replace(/^.+[ \t]*\n=+[ \t]*\n+/gm, wrap);
    text = text.replace(/^.+[ \t]*\n-+[ \t]*\n+/gm, wrap);
    text = text.replace(/^\#{1,6}[ \t]*.+?[ \t]*\#*\n+/gm, wrap);
    return text;
  };


  /******************************************************************
   * Attribute Blocks                                               *
   *****************************************************************/

  // TODO: use sentinels. Should we just add/remove them in doConversion?
  // TODO: better matches for id / class attributes
  var attrBlock = "\\{[ \\t]*((?:[#.][-_:a-zA-Z0-9]+[ \\t]*)+)\\}";
  var hdrAttributesA = new RegExp("^(#{1,6}.*#{0,6})[ \\t]+" + attrBlock + "[ \\t]*(?:\\n|0x03)", "gm");
  var hdrAttributesB = new RegExp("^(.*)[ \\t]+" + attrBlock + "[ \\t]*\\n" +
    "(?=[\\-|=]+\\s*(?:\\n|0x03))", "gm"); // underline lookahead
  var fcbAttributes =  new RegExp("^(```[ \\t]*[^{\\s]*)[ \\t]+" + attrBlock + "[ \\t]*\\n" +
    "(?=([\\s\\S]*?)\\n```[ \\t]*(\\n|0x03))", "gm");
      
  // Extract headers attribute blocks, move them above the element they will be
  // applied to, and hash them for later.
  Markdown.Extra.prototype.hashHeaderAttributeBlocks = function(text) {
    
    var self = this;
    function attributeCallback(wholeMatch, pre, attr) {
      return '<p>~XX' + (self.hashBlocks.push(attr) - 1) + 'XX</p>\n' + pre + "\n";
    }

    text = text.replace(hdrAttributesA, attributeCallback);  // ## headers
    text = text.replace(hdrAttributesB, attributeCallback);  // underline headers
    return text;
  };
  
  // Extract FCB attribute blocks, move them above the element they will be
  // applied to, and hash them for later.
  Markdown.Extra.prototype.hashFcbAttributeBlocks = function(text) {
    // TODO: use sentinels. Should we just add/remove them in doConversion?
    // TODO: better matches for id / class attributes

    var self = this;
    function attributeCallback(wholeMatch, pre, attr) {
      return '<p>~XX' + (self.hashBlocks.push(attr) - 1) + 'XX</p>\n' + pre + "\n";
    }

    return text.replace(fcbAttributes, attributeCallback);
  };

  Markdown.Extra.prototype.applyAttributeBlocks = function(text) {
    var self = this;
    var blockRe = new RegExp('<p>~XX(\\d+)XX</p>[\\s]*' +
                             '(?:<(h[1-6]|pre)(?: +class="(\\S+)")?(>[\\s\\S]*?</\\2>))', "gm");
    text = text.replace(blockRe, function(wholeMatch, k, tag, cls, rest) {
      if (!tag) // no following header or fenced code block.
        return '';

      // get attributes list from hash
      var key = parseInt(k, 10);
      var attributes = self.hashBlocks[key];

      // get id
      var id = attributes.match(/#[^\s#.]+/g) || [];
      var idStr = id[0] ? ' id="' + id[0].substr(1, id[0].length - 1) + '"' : '';

      // get classes and merge with existing classes
      var classes = attributes.match(/\.[^\s#.]+/g) || [];
      for (var i = 0; i < classes.length; i++) // Remove leading dot
        classes[i] = classes[i].substr(1, classes[i].length - 1);

      var classStr = '';
      if (cls)
        classes = union(classes, [cls]);

      if (classes.length > 0)
        classStr = ' class="' + classes.join(' ') + '"';

      return "<" + tag + idStr + classStr + rest;
    });

    return text;
  };

  /******************************************************************
   * Tables                                                         *
   *****************************************************************/

  // Find and convert Markdown Extra tables into html.
  Markdown.Extra.prototype.tables = function(text) {
    var self = this;

    var leadingPipe = new RegExp(
      ['^'                         ,
       '[ ]{0,3}'                  , // Allowed whitespace
       '[|]'                       , // Initial pipe
       '(.+)\\n'                   , // $1: Header Row

       '[ ]{0,3}'                  , // Allowed whitespace
       '[|]([ ]*[-:]+[-| :]*)\\n'  , // $2: Separator

       '('                         , // $3: Table Body
         '(?:[ ]*[|].*\\n?)*'      , // Table rows
       ')',
       '(?:\\n|$)'                   // Stop at final newline
      ].join(''),
      'gm'
    );

    var noLeadingPipe = new RegExp(
      ['^'                         ,
       '[ ]{0,3}'                  , // Allowed whitespace
       '(\\S.*[|].*)\\n'           , // $1: Header Row

       '[ ]{0,3}'                  , // Allowed whitespace
       '([-:]+[ ]*[|][-| :]*)\\n'  , // $2: Separator

       '('                         , // $3: Table Body
         '(?:.*[|].*\\n?)*'        , // Table rows
       ')'                         ,
       '(?:\\n|$)'                   // Stop at final newline
      ].join(''),
      'gm'
    );

    text = text.replace(leadingPipe, doTable);
    text = text.replace(noLeadingPipe, doTable);

    // $1 = header, $2 = separator, $3 = body
    function doTable(match, header, separator, body, offset, string) {
      // remove any leading pipes and whitespace
      header = header.replace(/^ *[|]/m, '');
      separator = separator.replace(/^ *[|]/m, '');
      body = body.replace(/^ *[|]/gm, '');

      // remove trailing pipes and whitespace
      header = header.replace(/[|] *$/m, '');
      separator = separator.replace(/[|] *$/m, '');
      body = body.replace(/[|] *$/gm, '');

      // determine column alignments
      alignspecs = separator.split(/ *[|] */);
      align = [];
      for (var i = 0; i < alignspecs.length; i++) {
        var spec = alignspecs[i];
        if (spec.match(/^ *-+: *$/m))
          align[i] = ' style="text-align:right;"';
        else if (spec.match(/^ *:-+: *$/m))
          align[i] = ' style="text-align:center;"';
        else if (spec.match(/^ *:-+ *$/m))
          align[i] = ' style="text-align:left;"';
        else align[i] = '';
      }

      // TODO: parse spans in header and rows before splitting, so that pipes
      // inside of tags are not interpreted as separators
      var headers = header.split(/ *[|] */);
      var colCount = headers.length;

      // build html
      var cls = self.tableClass ? ' class="' + self.tableClass + '"' : '';
      var html = ['<table', cls, '>\n', '<thead>\n', '<tr>\n'].join('');

      // build column headers.
      for (i = 0; i < colCount; i++) {
        var headerHtml = convertSpans(trim(headers[i]), self);
        html += ["  <th", align[i], ">", headerHtml, "</th>\n"].join('');
      }
      html += "</tr>\n</thead>\n";

      // build rows
      var rows = body.split('\n');
      for (i = 0; i < rows.length; i++) {
        if (rows[i].match(/^\s*$/)) // can apply to final row
          continue;

        // ensure number of rowCells matches colCount
        var rowCells = rows[i].split(/ *[|] */);
        var lenDiff = colCount - rowCells.length;
        for (var j = 0; j < lenDiff; j++)
          rowCells.push('');

        html += "<tr>\n";
        for (j = 0; j < colCount; j++) {
          var colHtml = convertSpans(trim(rowCells[j]), self);
          html += ["  <td", align[j], ">", colHtml, "</td>\n"].join('');
        }
        html += "</tr>\n";
      }

      html += "</table>\n";

      // replace html with placeholder until postConversion step
      return self.hashExtraBlock(html);
    }

    return text;
  };


  /******************************************************************
   * Footnotes                                                      *
   *****************************************************************/
  
  // Strip footnote, store in hashes.
  Markdown.Extra.prototype.stripFootnoteDefinitions = function(text) {
    var self = this;

    text = text.replace(
      /\n[ ]{0,3}\[\^(.+?)\]\:[ \t]*\n?([\s\S]*?)\n{1,2}((?=\n[ ]{0,3}\S)|$)/g,
      function(wholeMatch, m1, m2) {
        m1 = slugify(m1);
        m2 += "\n";
        m2 = m2.replace(/^[ ]{0,3}/g, "");
        self.footnotes[m1] = m2;
        return "\n";
      });

    return text;
  };
  

  // Find and convert footnotes references.
  Markdown.Extra.prototype.doFootnotes = function(text) {
    var self = this;
    if(self.isConvertingFootnote === true) {
      return text;
    }

    var footnoteCounter = 0;
    text = text.replace(/\[\^(.+?)\]/g, function(wholeMatch, m1) {
      var id = slugify(m1);
      var footnote = self.footnotes[id];
      if (footnote === undefined) {
        return wholeMatch;
      }
      footnoteCounter++;
      self.usedFootnotes.push(id);
      var html = '<a href="#fn:' + id + '" id="fnref:' + id
      + '" title="See footnote" class="footnote">' + footnoteCounter
      + '</a>';
      return self.hashExtraInline(html);
    });

    return text;
  };

  // Print footnotes at the end of the document
  Markdown.Extra.prototype.printFootnotes = function(text) {
    var self = this;

    if (self.usedFootnotes.length === 0) {
      return text;
    }

    text += '\n\n<div class="footnotes">\n<hr>\n<ol>\n\n';
    for(var i=0; i<self.usedFootnotes.length; i++) {
      var id = self.usedFootnotes[i];
      var footnote = self.footnotes[id];
      self.isConvertingFootnote = true;
      var formattedfootnote = convertSpans(footnote, self);
      delete self.isConvertingFootnote;
      text += '<li id="fn:'
        + id
        + '">'
        + formattedfootnote
        + ' <a href="#fnref:'
        + id
        + '" title="Return to article" class="reversefootnote">&#8617;</a></li>\n\n';
    }
    text += '</ol>\n</div>';
    return text;
  };
  
  
  /******************************************************************
  * Fenced Code Blocks  (gfm)                                       *
  ******************************************************************/

  // Find and convert gfm-inspired fenced code blocks into html.
  Markdown.Extra.prototype.fencedCodeBlocks = function(text) {
    function encodeCode(code) {
      code = code.replace(/&/g, "&amp;");
      code = code.replace(/</g, "&lt;");
      code = code.replace(/>/g, "&gt;");
      // These were escaped by PageDown before postNormalization 
      code = code.replace(/~D/g, "$$");
      code = code.replace(/~T/g, "~");
      return code;
    }

    var self = this;
    text = text.replace(/(?:^|\n)```[ \t]*(\S*)[ \t]*\n([\s\S]*?)\n```[ \t]*(?=\n)/g, function(match, m1, m2) {
      var language = m1, codeblock = m2;

      // adhere to specified options
      var preclass = self.googleCodePrettify ? ' class="prettyprint"' : '';
      var codeclass = '';
      if (language) {
        if (self.googleCodePrettify || self.highlightJs) {
          // use html5 language- class names. supported by both prettify and highlight.js
          codeclass = ' class="language-' + language + '"';
        } else {
          codeclass = ' class="' + language + '"';
        }
      }

      var html = ['<pre', preclass, '><code', codeclass, '>',
                  encodeCode(codeblock), '</code></pre>'].join('');

      // replace codeblock with placeholder until postConversion step
      return self.hashExtraBlock(html);
    });

    return text;
  };


  /******************************************************************
  * SmartyPants                                                     *
  ******************************************************************/
  
  Markdown.Extra.prototype.educatePants = function(text) {
    var self = this;
    var result = '';
    var blockOffset = 0;
    // Here we parse HTML in a very bad manner
    text.replace(/(?:<!--[\s\S]*?-->)|(<)([a-zA-Z1-6]+)([^\n]*?>)([\s\S]*?)(<\/\2>)/g, function(wholeMatch, m1, m2, m3, m4, m5, offset) {
      var token = text.substring(blockOffset, offset);
      result += self.applyPants(token);
      self.smartyPantsLastChar = result.substring(result.length - 1);
      blockOffset = offset + wholeMatch.length;
      if(!m1) {
        // Skip commentary
        result += wholeMatch;
        return;
      }
      // Skip special tags
      if(!/code|kbd|pre|script|noscript|iframe|math|ins|del|pre/i.test(m2)) {
        m4 = self.educatePants(m4);
      }
      else {
        self.smartyPantsLastChar = m4.substring(m4.length - 1);
      }
      result += m1 + m2 + m3 + m4 + m5;
    });
    var lastToken = text.substring(blockOffset);
    result += self.applyPants(lastToken);
    self.smartyPantsLastChar = result.substring(result.length - 1);
    return result;
  };
    
  function revertPants(wholeMatch, m1) {
    var blockText = m1;
    blockText = blockText.replace(/&\#8220;/g, "\"");
    blockText = blockText.replace(/&\#8221;/g, "\"");
    blockText = blockText.replace(/&\#8216;/g, "'");
    blockText = blockText.replace(/&\#8217;/g, "'");
    blockText = blockText.replace(/&\#8212;/g, "---");
    blockText = blockText.replace(/&\#8211;/g, "--");
    blockText = blockText.replace(/&\#8230;/g, "...");
    return blockText;
  }
  
  Markdown.Extra.prototype.applyPants = function(text) {
    // Dashes
    text = text.replace(/---/g, "&#8212;").replace(/--/g, "&#8211;");
    // Ellipses
    text = text.replace(/\.\.\./g, "&#8230;").replace(/\.\s\.\s\./g, "&#8230;");
    // Backticks
    text = text.replace(/``/g, "&#8220;").replace (/''/g, "&#8221;");
    
    if(/^'$/.test(text)) {
      // Special case: single-character ' token
      if(/\S/.test(this.smartyPantsLastChar)) {
        return "&#8217;";
      }
      return "&#8216;";
    }
    if(/^"$/.test(text)) {
      // Special case: single-character " token
      if(/\S/.test(this.smartyPantsLastChar)) {
        return "&#8221;";
      }
      return "&#8220;";
    }

    // Special case if the very first character is a quote
    // followed by punctuation at a non-word-break. Close the quotes by brute force:
    text = text.replace (/^'(?=[!"#\$\%'()*+,\-.\/:;<=>?\@\[\\]\^_`{|}~]\B)/, "&#8217;");
    text = text.replace (/^"(?=[!"#\$\%'()*+,\-.\/:;<=>?\@\[\\]\^_`{|}~]\B)/, "&#8221;");

    // Special case for double sets of quotes, e.g.:
    //   <p>He said, "'Quoted' words in a larger quote."</p>
    text = text.replace(/"'(?=\w)/g, "&#8220;&#8216;");
    text = text.replace(/'"(?=\w)/g, "&#8216;&#8220;");

    // Special case for decade abbreviations (the '80s):
    text = text.replace(/'(?=\d{2}s)/g, "&#8217;");
    
    // Get most opening single quotes:
    text = text.replace(/(\s|&nbsp;|--|&[mn]dash;|&\#8211;|&\#8212;|&\#x201[34];)'(?=\w)/g, "$1&#8216;");
    
    // Single closing quotes:
    text = text.replace(/([^\s\[\{\(\-])'/g, "$1&#8217;");
    text = text.replace(/'(?=\s|s\b)/g, "&#8217;");

    // Any remaining single quotes should be opening ones:
    text = text.replace(/'/g, "&#8216;");
    
    // Get most opening double quotes:
    text = text.replace(/(\s|&nbsp;|--|&[mn]dash;|&\#8211;|&\#8212;|&\#x201[34];)"(?=\w)/g, "$1&#8220;");
    
    // Double closing quotes:
    text = text.replace(/([^\s\[\{\(\-])"/g, "$1&#8221;");
    text = text.replace(/"(?=\s)/g, "&#8221;");
    
    // Any remaining quotes should be opening ones.
    text = text.replace(/"/ig, "&#8220;");
    return text;
  };

  // Find and convert markdown extra definition lists into html.
  Markdown.Extra.prototype.runSmartyPants = function(text) {
    this.smartyPantsLastChar = '';
    text = this.educatePants(text);
    // Clean everything inside html tags (some of them may have been converted due to our rough html parsing)
    text = text.replace(/(<([a-zA-Z1-6]+)\b([^\n>]*?)(\/)?>)/g, revertPants);
    return text;
  };
  
  /******************************************************************
  * Definition Lists                                                *
  ******************************************************************/

  // Find and convert markdown extra definition lists into html.
  Markdown.Extra.prototype.definitionLists = function(text) {
    var wholeList = new RegExp(
      ['(\\x02\\n?|\\n\\n)'          ,
       '(?:'                         ,
         '('                         , // $1 = whole list
           '('                       , // $2
             '[ ]{0,3}'              ,
             '((?:[ \\t]*\\S.*\\n)+)', // $3 = defined term
             '\\n?'                  ,
             '[ ]{0,3}:[ ]+'         , // colon starting definition
           ')'                       ,
           '([\\s\\S]+?)'            ,
           '('                       , // $4
               '(?=\\0x03)'          , // \z
             '|'                     ,
               '(?='                 ,
                 '\\n{2,}'           ,
                 '(?=\\S)'           ,
                 '(?!'               , // Negative lookahead for another term
                   '[ ]{0,3}'        ,
                   '(?:\\S.*\\n)+?'  , // defined term
                   '\\n?'            ,
                   '[ ]{0,3}:[ ]+'   , // colon starting definition
                 ')'                 ,
                 '(?!'               , // Negative lookahead for another definition
                   '[ ]{0,3}:[ ]+'   , // colon starting definition
                 ')'                 ,
               ')'                   ,
           ')'                       ,
         ')'                         ,
       ')'
      ].join(''),
      'gm'
    );

    var self = this;
    text = addAnchors(text);

    text = text.replace(wholeList, function(match, pre, list) {
      var result = trim(self.processDefListItems(list));
      result = "<dl>\n" + result + "\n</dl>";
      return pre + self.hashExtraBlock(result) + "\n\n";
    });

    return removeAnchors(text);
  };

  // Process the contents of a single definition list, splitting it
  // into individual term and definition list items.
  Markdown.Extra.prototype.processDefListItems = function(listStr) {
    var self = this;

    var dt = new RegExp(
      ['(\\x02\\n?|\\n\\n+)'    , // leading line
       '('                      , // definition terms = $1
         '[ ]{0,3}'             , // leading whitespace
         '(?![:][ ]|[ ])'       , // negative lookahead for a definition
                                  //   mark (colon) or more whitespace
         '(?:\\S.*\\n)+?'       , // actual term (not whitespace)
       ')'                      ,
       '(?=\\n?[ ]{0,3}:[ ])'     // lookahead for following line feed
      ].join(''),                 //   with a definition mark
      'gm'
    );

    var dd = new RegExp(
      ['\\n(\\n+)?'              , // leading line = $1
       '('                       , // marker space = $2
         '[ ]{0,3}'              , // whitespace before colon
         '[:][ ]+'               , // definition mark (colon)
       ')'                       ,
       '([\\s\\S]+?)'            , // definition text = $3
       '(?=\\n*'                 , // stop at next definition mark,
         '(?:'                   , // next term or end of text
           '\\n[ ]{0,3}[:][ ]|'  ,
           '<dt>|\\x03'          , // \z
         ')'                     ,
       ')'
      ].join(''),
      'gm'
    );

    listStr = addAnchors(listStr);
    // trim trailing blank lines:
    listStr = listStr.replace(/\n{2,}(?=\\x03)/, "\n");

    // Process definition terms.
    listStr = listStr.replace(dt, function(match, pre, termsStr) {
      var terms = trim(termsStr).split("\n");
      var text = '';
      for (var i = 0; i < terms.length; i++) {
        var term = terms[i];
        // process spans inside dt
        term = convertSpans(trim(term), self);
        text += "\n<dt>" + term + "</dt>";
      }
      return text + "\n";
    });

    // Process actual definitions.
    listStr = listStr.replace(dd, function(match, leadingLine, markerSpace, def) {
      if (leadingLine || def.match(/\n{2,}/)) {
        // replace marker with the appropriate whitespace indentation
        def = Array(markerSpace.length + 1).join(' ') + def;
        // process markdown inside definition
        // TODO?: currently doesn't apply extensions
        def = outdent(def) + "\n\n";
        def = "\n" + convertAll(def, self) + "\n";
      } else {
        // convert span-level markdown inside definition
        def = rtrim(def);
        def = convertSpans(outdent(def), self);
      }

      return "\n<dd>" + def + "</dd>\n";
    });

    return removeAnchors(listStr);
  };


  /***********************************************************
  * Strikethrough                                            *
  ************************************************************/

  Markdown.Extra.prototype.strikethrough = function(text) {
    // Pretty much duplicated from _DoItalicsAndBold
    return text.replace(/([\W_]|^)~T~T(?=\S)([^\r]*?\S[\*_]*)~T~T([\W_]|$)/g,
      "$1<del>$2</del>$3");
  };


  /***********************************************************
  * New lines                                                *
  ************************************************************/

  Markdown.Extra.prototype.newlines = function(text) {
    // We have to ignore already converted newlines and line breaks in sub-list items
    return text.replace(/(<(?:br|\/li)>)?\n/g, function(wholeMatch, previousTag) {
      return previousTag ? wholeMatch : " <br>\n";
    });
  };
  
})();


define("pagedown-extra", function(){});

/*globals Markdown */
define('extensions/markdownExtra',[
    "underscore",
    "utils",
    "classes/Extension",
    'google-code-prettify',
    // 'highlightjs',
    'pagedown-extra',
], function(_, utils, Extension, prettify) {

    var markdownExtra = new Extension("markdownExtra", "Markdown Extra", true);
    markdownExtra.defaultConfig = {
        extensions: [
            "fenced_code_gfm",
            "tables",
            "def_list",
            "attr_list",
            "footnotes",
            "smartypants",
            "strikethrough",
            "newlines",
        ],
        intraword: true,
        comments: true,
        highlighter: "prettify"
    };

    var eventMgr;
    markdownExtra.onEventMgrCreated = function(eventMgrParameter) {
        eventMgr = eventMgrParameter;
    };

    function onToggleMode(editor) {
        editor.hooks.chain("onPreviewRefresh", function () {
            $('#preview-contents pre').addClass('prettyprint'); // 不能加linenums, 加了后, uml不能显示
            prettify.prettyPrint();
        });
    }

    markdownExtra.onToggleMode = onToggleMode;

    markdownExtra.onPagedownConfigure = function(editor) {
        var converter = editor.getConverter();
        if(markdownExtra.config.intraword === true) {
            var converterOptions = {
                _DoItalicsAndBold: function(text) {
                    text = text.replace(/([^\w*]|^)(\*\*|__)(?=\S)(.+?[*_]*)(?=\S)\2(?=[^\w*]|$)/g, "$1<strong>$3</strong>");
                    text = text.replace(/([^\w*]|^)(\*|_)(?=\S)(.+?)(?=\S)\2(?=[^\w*]|$)/g, "$1<em>$3</em>");
                    return text;
                }
            };
            converter.setOptions(converterOptions);
        }
        if(markdownExtra.config.comments === true) {
            converter.hooks.chain("postConversion", function(text) {
                return text.replace(/<!--.*?-->/g, function(wholeMatch) {
                    return wholeMatch.replace(/^<!---(.+?)-?-->$/, ' <span class="comment label label-danger">$1</span> ');
                });
            });
        }
        
        var extraOptions = {
            extensions: markdownExtra.config.extensions
        };
      
        extraOptions.highlighter = "prettify";
        
        onToggleMode(editor);

        Markdown.Extra.init(converter, extraOptions);
    };

    return markdownExtra;
});
define('libs/mathjax_init',[
    "settings",
], function(settings/*, mathjaxConfigJS*/) {
    var script = document.createElement('script');
    script.type = 'text/x-mathjax-config';
    var mathjaxConfigJS = 'MathJax.Hub.Config({\n\tskipStartupTypeset: true,\n    "HTML-CSS": {\n        preferredFont: "TeX",\n        availableFonts: [\n            "STIX",\n            "TeX"\n        ],\n        linebreaks: {\n            automatic: true\n        },\n        EqnChunk: 10,\n        imageFont: null\n    },\n    tex2jax: <%= tex2jax || \'{ inlineMath: [["$","$"],["\\\\\\\\\\\\\\\\(","\\\\\\\\\\\\\\\\)"]], displayMath: [["$$","$$"],["\\\\\\\\[","\\\\\\\\]"]], processEscapes: true }\' %>,\n    TeX: $.extend({\n        noUndefined: {\n            attributes: {\n                mathcolor: "red",\n                mathbackground: "#FFEEEE",\n                mathsize: "90%"\n            }\n        },\n        Safe: {\n            allow: {\n                URLs: "safe",\n                classes: "safe",\n                cssIDs: "safe",\n                styles: "safe",\n                fontsize: "all"\n            }\n        }\n    }, <%= tex %>),\n    messageStyle: "none"\n});\n';
    script.innerHTML = _.template(mathjaxConfigJS, {
        tex: settings.extensionSettings.mathJax ? settings.extensionSettings.mathJax.tex : 'undefined',
        tex2jax: settings.extensionSettings.mathJax ? settings.extensionSettings.mathJax.tex2jax : undefined
    });
    document.getElementsByTagName('head')[0].appendChild(script);
});
/*defines MathJax */
define('extensions/mathJax',[
    "utils",
    "classes/Extension",
    "mathjax",
], function(utils, Extension) {
	
	var mathJax = new Extension("mathJax", "MathJax", true);
    mathJax.defaultConfig = {
        tex: "{}",
        tex2jax: '{ inlineMath: [["$","$"],["\\\\\\\\(","\\\\\\\\)"]], displayMath: [["$$","$$"],["\\\\[","\\\\]"]], processEscapes: true }'
    };
    
    /*jshint ignore:start */
    mathJax.onPagedownConfigure = function(editorObject) {
        t = document.getElementById("preview-contents");

        var converter = editorObject.getConverter();
        converter.hooks.chain("preConversion", p);
        converter.hooks.chain("postConversion", d);
    };
    
    var afterRefreshCallback;
    mathJax.onAsyncPreview = function(callback) {
        afterRefreshCallback = callback;
        j();
    };
    
    // From math.stackexchange.com...

    function b(a, f, b) {
        var c = k.slice(a, f + 1).join("").replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
        for (h.Browser.isMSIE && (c = c.replace(/(%[^\n]*)\n/g, "$1<br/>\n")); f > a; )
            k[f] = "", f--;
        k[a] = "@@" + m.length + "@@";
        b && (c = b(c));
        m.push(c);
        i = o = l = null
    }
    function p(a) {
        i = o = l = null;
        m = [];
        var f;
        /`/.test(a) ? (a = a.replace(/~/g, "~T").replace(/(^|[^\\])(`+)([^\n]*?[^`\n])\2(?!`)/gm, function(a) {
            return a.replace(/\$/g, "~D")
        }), f = function(a) {
            return a.replace(/~([TD])/g, 
            function(a, c) {
                return {T: "~",D: "$"}[c]
            })
        }) : f = function(a) {
            return a
        };
        k = r(a.replace(/\r\n?/g, "\n"), u);
        for (var a = 1, d = k.length; a < d; a += 2) {
            var c = k[a];
            "@" === c.charAt(0) ? (k[a] = "@@" + m.length + "@@", m.push(c)) : i ? c === o ? n ? l = a : b(i, a, f) : c.match(/\n.*\n/) ? (l && (a = l, b(i, a, f)), i = o = l = null, n = 0) : "{" === c ? n++ : "}" === c && n && n-- : c === s || "$$" === c ? (i = a, o = c, n = 0) : "begin" === c.substr(1, 5) && (i = a, o = "\\end" + c.substr(6), n = 0)
        }
        l && b(i, l, f);
        return f(k.join(""))
    }
    function d(a) {
        a = a.replace(/@@(\d+)@@/g, function(a, b) {
            return m[b]
        });
        m = null;
        return a
    }
    function e() {
        q = !1;
        h.cancelTypeset = !1;
        h.Queue(["Typeset", h, t])
        h.Queue(afterRefreshCallback); //benweet
    }
    function j() {
        !q && /*benweet (we need to call our afterRefreshCallback) g &&*/ (q = !0, h.Cancel(), h.Queue(e))
    }
    var g = !1, q = !1, t = null, s = "$", k, i, o, l, n, m, h = MathJax.Hub;
    h.Queue(function() {
        g = !0;
        h.processUpdateTime = 50;
        h.Config({"HTML-CSS": {EqnChunk: 10,EqnChunkFactor: 1},SVG: {EqnChunk: 10,EqnChunkFactor: 1}})
    });
    var u = /(\$\$?|\\(?:begin|end)\{[a-z]*\*?\}|\\[\\{}$]|[{}]|(?:\n\s*)+|@@\d+@@)/i, r;
    r = 3 === "aba".split(/(b)/).length ? function(a, f) {
        return a.split(f)
    } : function(a, f) {
        var b = [], c;
        if (!f.global) {
            c = f.toString();
            var d = "";
            c = c.replace(/^\/(.*)\/([im]*)$/, function(a, c, b) {
                d = b;
                return c
            });
            f = RegExp(c, d + "g")
        }
        for (var e = f.lastIndex = 0; c = f.exec(a); )
            b.push(a.substring(e, c.index)), b.push.apply(b, c.slice(1)), e = c.index + c[0].length;
        b.push(a.substring(e));
        return b
    };
    
    (function() {
        var b = MathJax.Hub;
        if (!b.Cancel) {
            b.cancelTypeset = !1;
            b.Register.StartupHook("HTML-CSS Jax Config", function() {
                var d = MathJax.OutputJax["HTML-CSS"], e = d.Translate;
                d.Augment({Translate: function(j, g) {
                        if (b.cancelTypeset || g.cancelled)
                            throw Error("MathJax Canceled");
                        return e.call(d, j, g)
                    }})
            });
            b.Register.StartupHook("SVG Jax Config", function() {
                var d = MathJax.OutputJax.SVG, e = d.Translate;
                d.Augment({Translate: function(j, g) {
                        if (b.cancelTypeset || g.cancelled)
                            throw Error("MathJax Canceled");
                        return e.call(d, 
                        j, g)
                    }})
            });
            b.Register.StartupHook("TeX Jax Config", function() {
                var d = MathJax.InputJax.TeX, e = d.Translate;
                d.Augment({Translate: function(j, g) {
                        if (b.cancelTypeset || g.cancelled)
                            throw Error("MathJax Canceled");
                        return e.call(d, j, g)
                    }})
            });
            var p = b.processError;
            b.processError = function(d, e, j) {
                if ("MathJax Canceled" !== d.message)
                    return p.call(b, d, e, j);
                MathJax.Message.Clear(0, 0);
                e.jaxIDs = [];
                e.jax = {};
                e.scripts = [];
                e.i = e.j = 0;
                e.cancelled = !0;
                return null
            };
            b.Cancel = function() {
                this.cancelTypeset = !0
            }
        }
    })();
    /*jshint ignore:end */

	return mathJax;
});
define('extensions/markdownSectionParser',[
    "underscore",
    "extensions/markdownExtra",
    "extensions/mathJax",
    "classes/Extension",
], function(_, markdownExtra, mathJax, Extension) {

    var markdownSectionParser = new Extension("markdownSectionParser", "Markdown section parser");

    var eventMgr;
    markdownSectionParser.onEventMgrCreated = function(eventMgrParameter) {
        eventMgr = eventMgrParameter;
    };

    markdownSectionParser.onPagedownConfigure = function(editor) {
        
        // Build a regexp to look for section delimiters
        var regexp = '^.+[ \\t]*\\n=+[ \\t]*\\n+|^.+[ \\t]*\\n-+[ \\t]*\\n+|^\\#{1,6}[ \\t]*.+?[ \\t]*\\#*\\n+'; // Title delimiters
        if(markdownExtra.enabled) {
            if(_.some(markdownExtra.config.extensions, function(extension) {
                return extension == "fenced_code_gfm";
            })) {
                regexp = '^```.*\\n[\\s\\S]*?\\n```|' + regexp; // Fenced block delimiters
            }
        }

        // TODO 代码```
        // regexp = '^```$|' + regexp;

        if(mathJax.enabled) {
            // Math delimiter has to follow 1 empty line to be considered as a section delimiter
            regexp = '^[ \\t]*\\n\\$\\$[\\s\\S]*?\\$\\$|' + regexp; // $$ math block delimiters
            regexp = '^[ \\t]*\\n\\\\\\\\[[\\s\\S]*?\\\\\\\\]|' + regexp; // \\[ \\] math block delimiters
            regexp = '^[ \\t]*\\n\\\\?\\\\begin\\{[a-z]*\\*?\\}[\\s\\S]*?\\\\end\\{[a-z]*\\*?\\}|' + regexp; // \\begin{...} \\end{...} math block delimiters
        }
        regexp = new RegExp(regexp, 'gm');
        
        var converter = editor.getConverter();
        converter.hooks.chain("preConversion", function(text) {
            // console.log('preConversion');
            // console.log(text);
            eventMgr.previewStartTime = new Date();
            var tmpText = text + "\n\n";
            function addSection(startOffset, endOffset) {
                var sectionText = tmpText.substring(offset, endOffset);
                sectionList.push({
                    text: sectionText,
                    textWithDelimiter: '\n<div class="se-section-delimiter"></div>\n\n' + sectionText + '\n'
                });
            }
            var sectionList = [], offset = 0;
            // Look for delimiters
            tmpText.replace(regexp, function(match, matchOffset) {
                // Create a new section with the text preceding the delimiter
                addSection(offset, matchOffset);
                offset = matchOffset;
            });
            // Last section
            addSection(offset, text.length);
            eventMgr.onSectionsCreated(sectionList);
            return _.reduce(sectionList, function(result, section) {
                return result + section.textWithDelimiter;
            }, '');
        });
    };

    return markdownSectionParser;
});
define('extensions/partialRendering',[
    "underscore",
    "crel",
    "extensions/markdownExtra",
    "classes/Extension"
], function(_, crel, markdownExtra, Extension, partialRenderingSettingsBlockHTML) {

    var partialRendering = new Extension("partialRendering", "Partial Rendering", true);

    var converter;
    var sectionCounter = 0;
    var sectionList = [];
    var linkDefinition;
    var sectionsToRemove = [];
    var modifiedSections = [];
    var insertBeforeSection;
    var fileChanged = false;
    function updateSectionList(newSectionList, newLinkDefinition) {
        modifiedSections = [];
        sectionsToRemove = [];
        insertBeforeSection = undefined;

        // Render everything if file or linkDefinition changed
        if(fileChanged === true || linkDefinition != newLinkDefinition) {
            fileChanged = false;
            linkDefinition = newLinkDefinition;
            sectionsToRemove = sectionList;
            sectionList = newSectionList;
            modifiedSections = newSectionList;
            return;
        }

        // Find modified section starting from top
        var leftIndex = sectionList.length;
        _.some(sectionList, function(section, index) {
            if(index >= newSectionList.length || section.text != newSectionList[index].text) {
                leftIndex = index;
                return true;
            }
        });
        
        // Find modified section starting from bottom
        var rightIndex = -sectionList.length;
        _.some(sectionList.slice().reverse(), function(section, index) {
            if(index >= newSectionList.length || section.text != newSectionList[newSectionList.length - index - 1].text) {
                rightIndex = -index;
                return true;
            }
        });
        
        if(leftIndex - rightIndex > sectionList.length) {
            // Prevent overlap
            rightIndex = leftIndex - sectionList.length;
        }

        // Create an array composed of left unmodified, modified, right
        // unmodified sections
        var leftSections = sectionList.slice(0, leftIndex);
        modifiedSections = newSectionList.slice(leftIndex, newSectionList.length + rightIndex);
        var rightSections = sectionList.slice(sectionList.length + rightIndex, sectionList.length);
        insertBeforeSection = _.first(rightSections);
        sectionsToRemove = sectionList.slice(leftIndex, sectionList.length + rightIndex);
        sectionList = leftSections.concat(modifiedSections).concat(rightSections);
    }
    
    var doFootnotes = false;
    var hasFootnotes = false;
    partialRendering.onSectionsCreated = function(sectionListParam) {

        var newSectionList = [];
        var newLinkDefinition = '\n';
        hasFootnotes = false;
        _.each(sectionListParam, function(section) {
            var text = section.textWithDelimiter + '\n';

            // Strip footnotes
            if(doFootnotes) {
                text = text.replace(/^```.*\n[\s\S]*?\n```|\n[ ]{0,3}\[\^(.+?)\]\:[ \t]*\n?([\s\S]*?)\n{1,2}((?=\n[ ]{0,3}\S)|$)/gm, function(wholeMatch, footnote) {
                    if(footnote) {
                        hasFootnotes = true;
                        newLinkDefinition += wholeMatch.replace(/^\s*\n/gm, '') + '\n';
                        return "";
                    }
                    return wholeMatch;
                });
            }

            // Strip link definitions
            text = text.replace(/^```.*\n[\s\S]*?\n```|^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?(?=\s|$)[ \t]*\n?[ \t]*((\n*)["(](.+?)[")][ \t]*)?(?:\n+)/gm, function(wholeMatch, link) {
                if(link) {
                    newLinkDefinition += wholeMatch.replace(/^\s*\n/gm, '') + '\n';
                    return "";
                }
                return wholeMatch;
            });

            // Add section to the newSectionList
            newSectionList.push({
                id: ++sectionCounter,
                text: text + '\n'
            });
        });

        updateSectionList(newSectionList, newLinkDefinition);
    };

    var footnoteMap = {};
    // Store one footnote elt in the footnote map
    function storeFootnote(footnoteElt) {
        var id = footnoteElt.id.substring(3);
        footnoteMap[id] = footnoteElt;
    }
    
    var footnoteContainerElt;
    var previewContentsElt;
    function refreshSections() {

        // Remove outdated sections
        _.each(sectionsToRemove, function(section) {
            var sectionElt = document.getElementById("wmd-preview-section-" + section.id);
            previewContentsElt.removeChild(sectionElt);
        });
        
        var wmdPreviewElt = document.getElementById("wmd-preview");
        var childNode = wmdPreviewElt.firstChild;
        function createSectionElt(section) {
            var sectionElt = crel('div', {
                id: 'wmd-preview-section-' + section.id,
                class: 'wmd-preview-section preview-content'
            });
            var isNextDelimiter = false;
            while (childNode) {
                var nextNode = childNode.nextSibling;
                if(isNextDelimiter === true && childNode.tagName == 'DIV' && childNode.className == 'se-section-delimiter') {
                    // Stop when encountered the next delimiter
                    break;
                }
                isNextDelimiter = true;
                if(childNode.tagName == 'DIV' && childNode.className == 'footnotes') {
                    _.each(childNode.querySelectorAll("ol > li"), storeFootnote);
                }
                else {
                    sectionElt.appendChild(childNode);
                }
                childNode = nextNode;
            }
            return sectionElt;
        }

        var newSectionEltList = document.createDocumentFragment();
        _.each(modifiedSections, function(section) {
            newSectionEltList.appendChild(createSectionElt(section));
        });
        wmdPreviewElt.innerHTML = '';
        var insertBeforeElt = footnoteContainerElt;
        if(insertBeforeSection !== undefined) {
            insertBeforeElt = document.getElementById("wmd-preview-section-" + insertBeforeSection.id);
        }
        previewContentsElt.insertBefore(newSectionEltList, insertBeforeElt);

        // Rewrite footnotes in the footer and update footnote numbers
        footnoteContainerElt.innerHTML = '';
        var usedFootnoteIds = [];
        if(hasFootnotes === true) {
            var footnoteElts = crel('ol');
            _.each(previewContentsElt.querySelectorAll('a.footnote'), function(elt, index) {
                elt.textContent = index + 1;
                var id = elt.id.substring(6);
                usedFootnoteIds.push(id);
                footnoteElts.appendChild(footnoteMap[id].cloneNode(true));
            });
            if(usedFootnoteIds.length > 0) {
                // Append the whole footnotes at the end of the document
                footnoteContainerElt.appendChild(crel('div', {
                    class: 'footnotes'
                }, crel('hr'), footnoteElts));
            }
            // Keep used footnotes only in our map
            footnoteMap = _.pick(footnoteMap, usedFootnoteIds);
        }
    }

    // 初始化时, toggleMode时
    function onPagedownConfigure(editor) {
        converter = editor.getConverter();
        converter.hooks.chain("preConversion", function() {
            var result = _.map(modifiedSections, function(section) {
                return section.text;
            });
            result.push(linkDefinition + "\n\n");
            return result.join("");
        });
        editor.hooks.chain("onPreviewRefresh", function() {
            refreshSections();
        });
    }

    partialRendering.onPagedownConfigure = onPagedownConfigure;
    partialRendering.onToggleMode = onPagedownConfigure;

    partialRendering.onInit = function() {
        if(markdownExtra.enabled) {
            if(_.some(markdownExtra.config.extensions, function(extension) {
                return extension == "footnotes";
            })) {
                doFootnotes = true;
            }
        }
    };
    
    partialRendering.onReady = function() {
        footnoteContainerElt = crel('div', {
            id: 'wmd-preview-section-footnotes',
            class: 'preview-content'
        });
        previewContentsElt = document.getElementById("preview-contents");
        previewContentsElt.appendChild(footnoteContainerElt);
    };

    partialRendering.onFileSelected = function() {
        fileChanged = true;
    };

    return partialRendering;
});
define('extensions/umlDiagrams',[
	'require',
	// "jquery",
	"underscore",
	"utils",
	"classes/Extension",
	'crel'
	// ', Diagram', // 如果加了这两个, 338 KB, 不加, 207KB
	// 'flow-chart'
], function(require, _, utils, Extension, crel
	// ,Diagram, 
	// flowChart
	) {

	var umlDiagrams = new Extension("umlDiagrams", "UML Diagrams", true);
	// umlDiagrams.settingsBlock = umlDiagramsSettingsBlockHTML;
	umlDiagrams.defaultConfig = {
		flowchartOptions: [
			'{',
			'   "line-width": 2,',
			'   "font-family": "sans-serif",',
			'   "font-weight": "normal"',
			'}'
		].join('\n')
	};

	var previewContentsElt = document.getElementById('preview-contents');
	function renderFlow() {
		var flows = previewContentsElt.querySelectorAll('.prettyprint > .language-flow');
		if (!flows || flows.length == 0) {
			return;
		}
		// console.log('flows')
		require(['flow-chart'], function (flowChart) {
			_.each(flows, function(elt) {
				try {
					var chart = flowChart.parse(elt.textContent);
					var preElt = elt.parentNode;
					var containerElt = crel('div', {
						class: 'flow-chart'
					});
					preElt.parentNode.replaceChild(containerElt, preElt);
					chart.drawSVG(containerElt, JSON.parse(umlDiagrams.config.flowchartOptions));
				}
				catch(e) {
					console.error(e);
				}
			});
		});
	}
	function renderSequence() {
		var ses = previewContentsElt.querySelectorAll('.prettyprint > .language-sequence');
		if (!ses || ses.length == 0) {
			return;
		}
		require(['Diagram'], function (Diagram) {
			_.each(ses, function(elt) {
				try {
					var diagram = Diagram.parse(elt.textContent);
					var preElt = elt.parentNode;
					var containerElt = crel('div', {
						class: 'sequence-diagram'
					});
					preElt.parentNode.replaceChild(containerElt, preElt);
					diagram.drawSVG(containerElt, {
						theme: 'simple'
					});

				}
				catch(e) {
					console.error(e);
				}
			});
		});
	}

	function renderFlow() {
		var flows = previewContentsElt.querySelectorAll('.prettyprint > .language-flow');
		if (!flows || flows.length == 0) {
			return;
		}
		// console.log('flows')
		require(['flow-chart'], function (flowChart) {
			_.each(flows, function(elt) {
				try {
					var chart = flowChart.parse(elt.textContent);
					var preElt = elt.parentNode;
					var containerElt = crel('div', {
						class: 'flow-chart'
					});
					preElt.parentNode.replaceChild(containerElt, preElt);
					chart.drawSVG(containerElt, JSON.parse(umlDiagrams.config.flowchartOptions));
				}
				catch(e) {
					console.error(e);
				}
			});
		});
	}

	function onToggleMode(editor) {
		editor.hooks.chain("onPreviewRefresh", function() {
			renderSequence();
			renderFlow();
		});
	}

	umlDiagrams.onPagedownConfigure = onToggleMode;
	umlDiagrams.onToggleMode = onToggleMode;

	return umlDiagrams;
});

define('extensions/toc',[
    "underscore",
    "utils",
    "classes/Extension",
], function(_, utils, Extension) {

    var toc = new Extension("toc", "Table of Contents", true);
    toc.defaultConfig = {
        marker: "\\[(TOC|toc)\\]",
        maxDepth: 6,
        button: true,
    };

    // toc.onLoadSettings = function() {
    //     utils.setInputValue("#input-toc-marker", toc.config.marker);
    //     utils.setInputValue("#input-toc-maxdepth", toc.config.maxDepth);
    //     utils.setInputChecked("#input-toc-button", toc.config.button);
    // };

    // toc.onSaveSettings = function(newConfig, event) {
    //     newConfig.marker = utils.getInputRegExpValue("#input-toc-marker", event);
    //     newConfig.maxDepth = utils.getInputIntValue("#input-toc-maxdepth");
    //     newConfig.button = utils.getInputChecked("#input-toc-button");
    // };

    /*
    toc.onCreatePreviewButton = function() {
        if(toc.config.button) {
            return buttonTocHTML;
        }
    };
    */

    // TOC element description
    function TocElement(tagName, anchor, text) {
        this.tagName = tagName;
        this.anchor = anchor;
        this.text = text;
        this.children = [];
    }
    TocElement.prototype.childrenToString = function() {
        if(this.children.length === 0) {
            return "";
        }
        var result = "<ul>\n";
        _.each(this.children, function(child) {
            result += child.toString();
        });
        result += "</ul>\n";
        return result;
    };
    TocElement.prototype.toString = function() {
        var result = "<li>";
        if(this.anchor && this.text) {
            result += '<a href="#' + this.anchor + '">' + this.text + '</a>';
        }
        result += this.childrenToString() + "</li>\n";
        return result;
    };

    // Transform flat list of TocElement into a tree
    function groupTags(array, level) {
        level = level || 1;
        var tagName = "H" + level;
        var result = [];

        var currentElement;
        function pushCurrentElement() {
            if(currentElement !== undefined) {
                if(currentElement.children.length > 0) {
                    currentElement.children = groupTags(currentElement.children, level + 1);
                }
                result.push(currentElement);
            }
        }

        _.each(array, function(element) {
            if(element.tagName != tagName) {
                if(level !== toc.config.maxDepth) {
                    if(currentElement === undefined) {
                        currentElement = new TocElement();
                    }
                    currentElement.children.push(element);
                }
            }
            else {
                pushCurrentElement();
                currentElement = element;
            }
        });
        pushCurrentElement();
        return result;
    }

    // Build the TOC
    var previewContentsElt;
    function buildToc() {
        var anchorList = {};
        function createAnchor(element) {
            var id = element.id || utils.slugify(element.textContent) || 'title';
            var anchor = id;
            var index = 0;
            while (_.has(anchorList, anchor)) {
                anchor = id + "-" + (++index);
            }
            anchorList[anchor] = true;
            // Update the id of the element
            element.id = anchor;
            return anchor;
        }

        var elementList = [];
        _.each(previewContentsElt.querySelectorAll('h1, h2, h3, h4, h5, h6'), function(elt) {
            elementList.push(new TocElement(elt.tagName, createAnchor(elt), elt.textContent));
        });
        elementList = groupTags(elementList);
        return '<div class="toc">\n<ul>\n' + elementList.join("") + '</ul>\n</div>\n';
    }

    toc.onPagedownConfigure = function(editor) {
        previewContentsElt = document.getElementById('preview-contents');
        var tocExp = new RegExp("^" + toc.config.marker + "$");
        // Run TOC generation when conversion is finished directly on HTML
        editor.hooks.chain("onPreviewRefresh", function() {
            var tocEltList = document.querySelectorAll('.table-of-contents, .toc');
            var htmlToc = buildToc();
            // Replace toc paragraphs
            _.each(previewContentsElt.getElementsByTagName('p'), function(elt) {
                if(tocExp.test(elt.innerHTML)) {
                    elt.innerHTML = htmlToc;
                }
            });
            // Add toc in the TOC button 
            _.each(tocEltList, function(elt) {
                elt.innerHTML = htmlToc;
            });

            $("#leanoteNavContentMd").height("auto"); // auto
            try {
                if(!$(htmlToc).text()) {
                    $("#leanoteNavContentMd").html("&nbsp; &nbsp; Nothing...");
                }
            } catch(e) {}
            // 这里, resize Height
            var curH = $("#leanoteNavContentMd").height();
            var pH = $("#mdEditor").height()-100;
            if(curH > pH) {
                $("#leanoteNavContentMd").height(pH);
            }
        });
    };

    toc.onReady = function() {
        // $('.extension-preview-buttons .table-of-contents').on('click', 'a', function(evt) {
        //     evt.preventDefault();
        // });
    };

    return toc;
});

define('extensions/emailConverter',[
    "classes/Extension",
], function(Extension) {
    var emailConverter = new Extension("emailConverter", "Markdown Email", true);
    emailConverter.onPagedownConfigure = function(editor) {
        editor.getConverter().hooks.chain("postConversion", function(text) {
            return text.replace(/<(mailto\:)?([^\s>]+@[^\s>]+\.\S+?)>/g, function(match, mailto, email) {
                return '<a href="mailto:' + email + '">' + email + '</a>';
            });
        });
    };

    return emailConverter;
});

/**
scrollLink原理

1) preview分出一个个section
2) Md text通过这些section一个个取高度, 成mdSection
3) 将mdSection和previewSection建立映射
4) 滚动时, 通过scollTop()得到section的位置, 到另一边的section得到另一方scrollTop(), 滚动之

注意要点:
light下得到左侧的mdSection是通过helper, 每一个section的文字设到helper容器内得到高度. 所以helper的样式要和wmd-input的样式要一模一样, 不然就会有误差!!

 */
define('extensions/scrollLink',[
    // "jquery",
    "underscore",
    "classes/Extension",
    // "text!html/scrollLinkSettingsBlock.html"
], function(_, Extension) {

    var scrollLink = new Extension("scrollLink", "Scroll Link", true, true);

    var aceEditor;
    scrollLink.onAceCreated = function(aceEditorParam) {
        aceEditor = aceEditorParam;
    };

    var sectionList;
    scrollLink.onSectionsCreated = function(sectionListParam) {
        sectionList = sectionListParam;
    };

    var offsetBegin = 0;
    scrollLink.onMarkdownTrim = function(offsetBeginParam) {
        offsetBegin = offsetBeginParam;
    };

    var $textareaElt;
    var $textareaHelperElt;
    var $previewElt;
    var mdSectionList = [];
    var htmlSectionList = [];
    var lastEditorScrollTop;
    var lastPreviewScrollTop;
    var buildSections = _.debounce(function() {

        mdSectionList = [];
        var mdTextOffset = 0;
        var mdSectionOffset = 0;
        var firstSectionOffset = offsetBegin;
        var padding = 0;
        function addTextareaSection(sectionText) {
            var sectionHeight = padding;
            if(sectionText !== undefined) {
                var textNode = document.createTextNode(sectionText);
                $textareaHelperElt.empty().append(textNode);
                sectionHeight += $textareaHelperElt.prop('scrollHeight');
            }
            var newSectionOffset = mdSectionOffset + sectionHeight;
            mdSectionList.push({
                startOffset: mdSectionOffset,
                endOffset: newSectionOffset,
                height: sectionHeight
            });
            mdSectionOffset = newSectionOffset;
        }
        if(window.lightMode) {
            // Special treatment for light mode
            $textareaHelperElt.innerWidth($textareaElt.innerWidth());
            _.each(sectionList, function(section, index) {
                var sectionText = section.text;
                if(index !== sectionList.length - 1) {
                    if(sectionText.length === 0) {
                        sectionText = undefined;
                    }
                }
                else {
                    if(/\n$/.test(sectionText)) {
                        // Need to add a line break to take into account a final empty line
                        sectionText += '\n';
                    }
                }
                addTextareaSection(sectionText);
            });

            // Apply a coef to manage divergence in some browsers
            var theoricalHeight = _.last(mdSectionList).endOffset;
            var realHeight = $textareaElt[0].scrollHeight;
            var coef = realHeight/theoricalHeight;
            mdSectionList = _.map(mdSectionList, function(mdSection) {
                return {
                    startOffset: mdSection.startOffset * coef,
                    endOffset: mdSection.endOffset * coef,
                    height: mdSection.height * coef,
                };
            });
        }
        else {
            // Everything's much simpler with ACE
            _.each(sectionList, function(section) {
                mdTextOffset += section.text.length + firstSectionOffset;
                firstSectionOffset = 0;
                var documentPosition = aceEditor.session.doc.indexToPosition(mdTextOffset);
                var screenPosition = aceEditor.session.documentToScreenPosition(documentPosition.row, documentPosition.column);
                var newSectionOffset = screenPosition.row * aceEditor.renderer.lineHeight;
                var sectionHeight = newSectionOffset - mdSectionOffset;
                mdSectionList.push({
                    startOffset: mdSectionOffset,
                    endOffset: newSectionOffset,
                    height: sectionHeight
                });
                mdSectionOffset = newSectionOffset;
            });
        }

        // Try to find corresponding sections in the preview
        htmlSectionList = [];
        var htmlSectionOffset;
        var previewScrollTop = $previewElt.scrollTop();
        $previewElt.find(".preview-content > .se-section-delimiter").each(function() {
            if(htmlSectionOffset === undefined) {
                // Force start to 0 for the first section
                htmlSectionOffset = 0;
                return;
            }
            var $delimiterElt = $(this);
            // Consider div scroll position
            var newSectionOffset = $delimiterElt.position().top + previewScrollTop;
            htmlSectionList.push({
                startOffset: htmlSectionOffset,
                endOffset: newSectionOffset,
                height: newSectionOffset - htmlSectionOffset
            });
            htmlSectionOffset = newSectionOffset;
        });
        // Last section
        var scrollHeight = $previewElt.prop('scrollHeight');
        htmlSectionList.push({
            startOffset: htmlSectionOffset,
            endOffset: scrollHeight,
            height: scrollHeight - htmlSectionOffset
        });

        // apply Scroll Link (-10 to have a gap > 9px)
        lastEditorScrollTop = -10;
        lastPreviewScrollTop = -10;
        doScrollLink();
    }, 500);

    function getDestScrollTop(srcScrollTop, srcSectionList, destSectionList) {
        // Find the section corresponding to the offset
        var sectionIndex;
        var srcSection = _.find(srcSectionList, function(section, index) {
            sectionIndex = index;
            return srcScrollTop < section.endOffset;
        });
        if(srcSection === undefined) {
            // Something wrong in the algorithm...
            return;
        }
        var posInSection = (srcScrollTop - srcSection.startOffset) / (srcSection.height || 1);
        var destSection = destSectionList[sectionIndex];
        return destSection.startOffset + destSection.height * posInSection;
    }

    var isScrollEditor = false;
    var isScrollPreview = false;
    var isEditorMoving = false;
    var isPreviewMoving = false;
    var scrollingHelper = $('<div>');
    var doScrollLink = _.throttle(function() {
        if(mdSectionList.length === 0 || mdSectionList.length !== htmlSectionList.length) {
            // Delay
            doScrollLink();
            return;
        }
        var editorScrollTop = window.lightMode ? $textareaElt.scrollTop() : aceEditor.renderer.getScrollTop();
        editorScrollTop < 0 && (editorScrollTop = 0);
        var previewScrollTop = $previewElt.scrollTop();
        
        var destScrollTop;
        // Perform the animation if diff > 9px
        if(isScrollEditor === true) {
            if(Math.abs(editorScrollTop - lastEditorScrollTop) <= 9) {
                return;
            }
            isScrollEditor = false;
            // Animate the preview
            lastEditorScrollTop = editorScrollTop;
            destScrollTop = getDestScrollTop(editorScrollTop, mdSectionList, htmlSectionList);
            destScrollTop = _.min([
                destScrollTop,
                $previewElt.prop('scrollHeight') - $previewElt.outerHeight()
            ]);
            if(Math.abs(destScrollTop - previewScrollTop) <= 9) {
                // Skip the animation if diff is <= 9
                lastPreviewScrollTop = previewScrollTop;
                return;
            }
            scrollingHelper.stop('scrollLinkFx', true).css('value', 0).animate({
                value: destScrollTop - previewScrollTop
            }, {
                easing: 'linear',
                duration: 200,
                queue: 'scrollLinkFx',
                step: function(now) {
                    isPreviewMoving = true;
                    lastPreviewScrollTop = previewScrollTop + now;
                    $previewElt.scrollTop(lastPreviewScrollTop);
                },
                done: function() {
                    _.defer(function() {
                        isPreviewMoving = false;
                    });
                },
            }).dequeue('scrollLinkFx');
        }
        else if(isScrollPreview === true) {
            if(Math.abs(previewScrollTop - lastPreviewScrollTop) <= 9) {
                return;
            }
            isScrollPreview = false;
            // Animate the editor
            lastPreviewScrollTop = previewScrollTop;
            destScrollTop = getDestScrollTop(previewScrollTop, htmlSectionList, mdSectionList);
            if(window.lightMode) {
                destScrollTop = _.min([
                    destScrollTop,
                    $textareaElt.prop('scrollHeight') - $textareaElt.outerHeight()
                ]);
            }
            else {
                destScrollTop = _.min([
                    destScrollTop,
                    aceEditor.session.getScreenLength() * aceEditor.renderer.lineHeight + aceEditor.renderer.scrollMargin.bottom - aceEditor.renderer.$size.scrollerHeight
                ]);
                // If negative, set it to zero
                destScrollTop < 0 && (destScrollTop = 0);
            }
            if(Math.abs(destScrollTop - editorScrollTop) <= 9) {
                // Skip the animation if diff is <= 9
                lastEditorScrollTop = editorScrollTop;
                return;
            }
            scrollingHelper.stop('scrollLinkFx', true).css('value', 0).animate({
                value: destScrollTop - editorScrollTop
            }, {
                easing: 'linear',
                duration: 200,
                queue: 'scrollLinkFx',
                step: function(now) {
                    isEditorMoving = true;
                    lastEditorScrollTop = editorScrollTop + now;
                    window.lightMode || aceEditor.session.setScrollTop(lastEditorScrollTop);
                    window.lightMode && $textareaElt.scrollTop(lastEditorScrollTop);
                },
                done: function() {
                    _.defer(function() {
                        isEditorMoving = false;
                    });
                },
            }).dequeue('scrollLinkFx');
        }
    }, 100);

    scrollLink.onLayoutResize = function() {
        isScrollEditor = true;
        buildSections();
    };

    scrollLink.onFileClosed = function() {
        mdSectionList = [];
    };

    function initScrollEvent () {

    }

    // 切换编辑模式时
    var onToggleMode = function (isOnToggleMode) {
        $previewElt = $(".preview-container");
        $textareaElt = $("#wmd-input");
        // This helper is used to measure sections height in light mode
        $textareaHelperElt = $('.textarea-helper');

        $previewElt.scroll(function() {
            if(isPreviewMoving === false && scrollAdjust === false) {
                isScrollPreview = true;
                isScrollEditor = false;
                doScrollLink();
            }
            scrollAdjust = false;
        });
        var handleEditorScroll = function() {
            if(isEditorMoving === false) {
                isScrollEditor = true;
                isScrollPreview = false;
                doScrollLink();
            }
        };

        // editor 滚动时操作
        var timeout = isOnToggleMode ? 500 : 0;
        setTimeout(function () {
            if(window.lightMode) {
                $textareaElt.scroll(handleEditorScroll);
            }
            else {
                aceEditor.session.on("changeScrollTop", handleEditorScroll);
            }
        }, timeout);
    };

    scrollLink.onToggleMode = function () {
        $previewElt = $(".preview-container");
        $textareaElt = $("#wmd-input");
        $textareaHelperElt = $('.textarea-helper');

        buildSections();

        // 可以不要这一段
        // isScrollPreview = true;
        // isScrollEditor = false;
        // doScrollLink();

        // console.log('-----------------')
        onToggleMode(true);

        // 左侧滚动到之前的位置
        // $previewElt.scrollTop($previewElt.scrollTop());
    };

    var scrollAdjust = false;
    scrollLink.onReady = function() {
        $previewElt = $(".preview-container");
        $textareaElt = $("#wmd-input");
        // This helper is used to measure sections height in light mode
        $textareaHelperElt = $('.textarea-helper');

        onToggleMode();

        // 添加目录, 两种目录
        // Reimplement anchor scrolling to work without preview
        $('.extension-preview-buttons .table-of-contents, #preview-contents').on('click', 'a', function(evt) {
            var id = this.hash;
            if (!id) {
                return;
            }
            evt.preventDefault();
            var anchorElt = $('#preview-contents ' + id);
            if(!anchorElt.length) {
                return;
            }
            var previewScrollTop = anchorElt[0].getBoundingClientRect().top - $previewElt.get(0).getBoundingClientRect().top + $previewElt.scrollTop();
            var editorScrollTop = getDestScrollTop(previewScrollTop, htmlSectionList, mdSectionList);

            $previewElt.scrollTop(previewScrollTop);
            window.lightMode || aceEditor.session.setScrollTop(editorScrollTop);
            window.lightMode && $textareaElt.scrollTop(editorScrollTop);
        });
    };

    var $previewContentsElt;
    scrollLink.onPagedownConfigure = function(editor) {
        $previewContentsElt = $("#preview-contents");
        editor.getConverter().hooks.chain("postConversion", function(text) {
            // To avoid losing scrolling position before elements are fully
            // loaded
            $previewContentsElt.height($previewContentsElt.height());
            return text;
        });
    };

    scrollLink.onPreviewFinished = function() {
        // Now set the correct height
        var previousHeight = $previewContentsElt.height();
        $previewContentsElt.height("auto");
        var newHeight = $previewContentsElt.height();
        isScrollEditor = true;
        if(newHeight < previousHeight) {
            // We expect a scroll adjustment
            scrollAdjust = true;
        }
        buildSections();
    };

    return scrollLink;
});

/*
 * waitForImages 1.4.2
 * -------------------
 * Provides a callback when all images have loaded in your given selector.
 * https://github.com/alexanderdickson/waitForImages
 *
 * Copyright (c) 2013 Alex Dickson
 * Licensed under the MIT license.
 */
(function ($) {
    // Namespace all events.
    var eventNamespace = 'waitForImages';

    // CSS properties which contain references to images.
    $.waitForImages = {
        hasImageProperties: ['backgroundImage', 'listStyleImage', 'borderImage', 'borderCornerImage']
    };

    // Custom selector to find `img` elements that have a valid `src` attribute and have not already loaded.
    $.expr[':'].uncached = function (obj) {
        // Ensure we are dealing with an `img` element with a valid `src` attribute.
        if (!$(obj).is('img[src!=""]')) {
            return false;
        }

        // Firefox's `complete` property will always be `true` even if the image has not been downloaded.
        // Doing it this way works in Firefox.
        var img = new Image();
        img.src = obj.src;
        return !img.complete;
    };

    $.fn.waitForImages = function (finishedCallback, eachCallback, waitForAll) {

        var allImgsLength = 0;
        var allImgsLoaded = 0;

        // Handle options object.
        if ($.isPlainObject(arguments[0])) {
            waitForAll = arguments[0].waitForAll;
            eachCallback = arguments[0].each;
			// This must be last as arguments[0]
			// is aliased with finishedCallback.
            finishedCallback = arguments[0].finished;
        }

        // Handle missing callbacks.
        finishedCallback = finishedCallback || $.noop;
        eachCallback = eachCallback || $.noop;

        // Convert waitForAll to Boolean
        waitForAll = !! waitForAll;

        // Ensure callbacks are functions.
        if (!$.isFunction(finishedCallback) || !$.isFunction(eachCallback)) {
            throw new TypeError('An invalid callback was supplied.');
        }

        return this.each(function () {
            // Build a list of all imgs, dependent on what images will be considered.
            var obj = $(this);
            var allImgs = [];
            // CSS properties which may contain an image.
            var hasImgProperties = $.waitForImages.hasImageProperties || [];
            // To match `url()` references.
            // Spec: http://www.w3.org/TR/CSS2/syndata.html#value-def-uri
            var matchUrl = /url\(\s*(['"]?)(.*?)\1\s*\)/g;

            if (waitForAll) {

                // Get all elements (including the original), as any one of them could have a background image.
                obj.find('*').andSelf().each(function () {
                    var element = $(this);

                    // If an `img` element, add it. But keep iterating in case it has a background image too.
                    if (element.is('img:uncached')) {
                        allImgs.push({
                            src: element.attr('src'),
                            element: element[0]
                        });
                    }

                    $.each(hasImgProperties, function (i, property) {
                        var propertyValue = element.css(property);
                        var match;

                        // If it doesn't contain this property, skip.
                        if (!propertyValue) {
                            return true;
                        }

                        // Get all url() of this element.
                        while (match = matchUrl.exec(propertyValue)) {
                            allImgs.push({
                                src: match[2],
                                element: element[0]
                            });
                        }
                    });
                });
            } else {
                // For images only, the task is simpler.
                obj.find('img:uncached')
                    .each(function () {
                    allImgs.push({
                        src: this.src,
                        element: this
                    });
                });
            }

            allImgsLength = allImgs.length;
            allImgsLoaded = 0;

            // If no images found, don't bother.
            if (allImgsLength === 0) {
                finishedCallback.call(obj[0]);
            }

            $.each(allImgs, function (i, img) {

                var image = new Image();

                // Handle the image loading and error with the same callback.
                $(image).bind('load.' + eventNamespace + ' error.' + eventNamespace, function (event) {
                    allImgsLoaded++;

                    // If an error occurred with loading the image, set the third argument accordingly.
                    eachCallback.call(img.element, allImgsLoaded, allImgsLength, event.type == 'load');

                    if (allImgsLoaded == allImgsLength) {
                        finishedCallback.call(obj[0]);
                        return false;
                    }

                });

                image.src = img.src;
            });
        });
    };
}(jQuery));

define("jquery-waitforimages", function(){});

define('eventMgr',[
    // "jquery",
    "underscore",
    "crel",
    "utils",
    "classes/Extension",
    "settings",
    // "text!html/settingsExtensionsAccordion.html",
    // "extensions/yamlFrontMatterParser",
    "extensions/markdownSectionParser",
    "extensions/partialRendering",
    // "extensions/buttonMarkdownSyntax",
    // "extensions/googleAnalytics",
    // "extensions/twitter",
    // "extensions/dialogAbout",
    // "extensions/dialogManagePublication",
    // "extensions/dialogManageSynchronization",
    // "extensions/dialogManageSharing",
    // "extensions/dialogOpenHarddrive",
    // "extensions/documentTitle",
    // "extensions/documentSelector",
    // "extensions/documentPanel",
    // "extensions/documentManager",
    // "extensions/workingIndicator",
    // "extensions/notifications",
    "extensions/umlDiagrams",
    "extensions/markdownExtra",
    "extensions/toc",
    "extensions/mathJax",
    "extensions/emailConverter",
    "extensions/scrollLink",
    // "extensions/buttonFocusMode",
    // "extensions/buttonSync",
    // "extensions/buttonPublish",
    // "extensions/buttonStat",
    // "extensions/buttonHtmlCode",
    // "extensions/buttonViewer",
    // "extensions/welcomeTour",
    // "extensions/spellCheck",
    // "extensions/userCustom",
    // "bootstrap",
    "jquery-waitforimages"
], function(_, crel, utils, Extension, settings, settingsExtensionsAccordionHTML) {

    var eventMgr = {};

    // Create a list of extensions from module arguments
    var extensionList = _.chain(arguments).map(function(argument) {
        return argument instanceof Extension && argument;
    }).compact().value();

    // Configure extensions
    var extensionSettings = settings.extensionSettings || {};
    _.each(extensionList, function(extension) {
        // Set the extension.config attribute from settings or default
        // configuration
        extension.config = _.extend({}, extension.defaultConfig, extensionSettings[extension.extensionId]);
        if(window.viewerMode === true && extension.disableInViewer === true) {
            // Skip enabling the extension if we are in the viewer and extension
            // doesn't support it
            extension.enabled = false;
        }
        else if(window.lightMode === true && extension.disableInLight === true) {
            // Same for light mode
            extension.enabled = false;
        }
        else {
            // Enable the extension if it's not optional or it has not been
            // disabled by the user
            extension.enabled = !extension.isOptional || extension.config.enabled === undefined || extension.config.enabled === true;
        }
    });

    // Returns all listeners with the specified name that are implemented in the
    // enabled extensions
    function getExtensionListenerList(eventName) {
        return _.chain(extensionList).map(function(extension) {
            return extension.enabled && extension[eventName];
        }).compact().value();
    }

    // Returns a function that calls every listeners with the specified name
    // from all enabled extensions
    var eventListenerListMap = {};
    function createEventHook(eventName) {
        eventListenerListMap[eventName] = getExtensionListenerList(eventName);
        return function() {
            var eventArguments = arguments;
            _.each(eventListenerListMap[eventName], function(listener) {
                // Use try/catch in case userCustom listener contains error
                try {
                    listener.apply(null, eventArguments);
                }
                catch(e) {
                    console.error(_.isObject(e) ? e.stack : e);
                }
            });
        };
    }

    // Declare an event Hook in the eventMgr that we can fire using eventMgr.eventName()
    function addEventHook(eventName) {
        eventMgr[eventName] = createEventHook(eventName);
    }

    // Used by external modules (not extensions) to listen to events
    eventMgr.addListener = function(eventName, listener) {
        try {
            eventListenerListMap[eventName].push(listener);
        }
        catch(e) {
            console.error('No event listener called ' + eventName);
        }
    };

    // Call every onInit listeners (enabled extensions only)
    createEventHook("onInit")();

    // Load/Save extension config from/to settings
    eventMgr.onLoadSettings = function() {
        _.each(extensionList, function(extension) {
            var isChecked = !extension.isOptional || extension.config.enabled === undefined || extension.config.enabled === true;
            utils.setInputChecked("#input-enable-extension-" + extension.extensionId, isChecked);
            // Special case for Markdown Extra and MathJax
            if(extension.extensionId == 'markdownExtra') {
                utils.setInputChecked("#input-settings-markdown-extra", isChecked);
            }
            else if(extension.extensionId == 'mathJax') {
                utils.setInputChecked("#input-settings-mathjax", isChecked);
            }
            var onLoadSettingsListener = extension.onLoadSettings;
            onLoadSettingsListener && onLoadSettingsListener();
        });
    };
    eventMgr.onSaveSettings = function(newExtensionSettings, event) {
        _.each(extensionList, function(extension) {
            if(window.lightMode === true && extension.disableInLight === true) {
                newExtensionSettings[extension.extensionId] = extension.config;
                return;
            }
            var newExtensionConfig = _.extend({}, extension.defaultConfig);
            newExtensionConfig.enabled = utils.getInputChecked("#input-enable-extension-" + extension.extensionId);
            var isChecked;
            // Special case for Markdown Extra and MathJax
            if(extension.extensionId == 'markdownExtra') {
                isChecked = utils.getInputChecked("#input-settings-markdown-extra");
                if(isChecked != extension.enabled) {
                    newExtensionConfig.enabled = isChecked;
                }
            }
            else if(extension.extensionId == 'mathJax') {
                isChecked = utils.getInputChecked("#input-settings-mathjax");
                if(isChecked != extension.enabled) {
                    newExtensionConfig.enabled = isChecked;
                }
            }
            var onSaveSettingsListener = extension.onSaveSettings;
            onSaveSettingsListener && onSaveSettingsListener(newExtensionConfig, event);
            newExtensionSettings[extension.extensionId] = newExtensionConfig;
        });
    };

    addEventHook("onMessage");
    addEventHook("onError");
    // addEventHook("onOfflineChanged");
    // addEventHook("onUserActive");
    // addEventHook("onAsyncRunning");
    addEventHook("onPeriodicRun");

    // To access modules that are loaded after extensions
    addEventHook("onFileMgrCreated");
    addEventHook("onSynchronizerCreated");
    addEventHook("onPublisherCreated");
    addEventHook("onEventMgrCreated");

    // Operations on files
    addEventHook("onFileCreated");
    addEventHook("onFileDeleted");
    addEventHook("onFileSelected");
    addEventHook("onFileOpen");
    addEventHook("onFileClosed");
    addEventHook("onContentChanged");

    addEventHook('onToggleMode');
    // addEventHook("onTitleChanged");

    // Operations on folders
    // addEventHook("onFoldersChanged");

    // Sync events
    // addEventHook("onSyncRunning");
    // addEventHook("onSyncSuccess");
    // addEventHook("onSyncImportSuccess");
    // addEventHook("onSyncExportSuccess");
    // addEventHook("onSyncRemoved");

    // Publish events
    // addEventHook("onPublishRunning");
    // addEventHook("onPublishSuccess");
    // addEventHook("onNewPublishSuccess");
    // addEventHook("onPublishRemoved");

    // Operations on Layout
    addEventHook("onLayoutConfigure");
    addEventHook("onLayoutCreated");
    addEventHook("onLayoutResize");

    // Operations on PageDown
    addEventHook("onPagedownConfigure");
    addEventHook("onSectionsCreated");
    addEventHook("onMarkdownTrim");

    // Operation on ACE
    addEventHook("onAceCreated");
    
    // Refresh twitter buttons
    // addEventHook("onTweet");
    

    var onPreviewFinished = createEventHook("onPreviewFinished");
    var onAsyncPreviewListenerList = getExtensionListenerList("onAsyncPreview");
    var previewContentsElt;
    var $previewContentsElt;
    eventMgr.onAsyncPreview = function() {
        function recursiveCall(callbackList) {
            var callback = callbackList.length ? callbackList.shift() : function() {
                _.defer(function() {
                    var html = "";
                    _.each(previewContentsElt.children, function(elt) {
                        html += elt.innerHTML;
                    });
                    html = html.replace(/^<div class="se-section-delimiter"><\/div>\n\n/gm, '');
                    var htmlWithComments = utils.trim(html);
                    var htmlWithoutComments = htmlWithComments.replace(/ <span class="comment label label-danger">.*?<\/span> /g, '');
                    onPreviewFinished(htmlWithComments, htmlWithoutComments);
                });
            };
            callback(function() {
                recursiveCall(callbackList);
            });
        }
        recursiveCall(onAsyncPreviewListenerList.concat([function(callback) {
            // We assume some images are loading asynchronously after the preview
            $previewContentsElt.waitForImages(callback);
        }]));
    };

    var onReady = createEventHook("onReady");
    eventMgr.onReady = function() {
        previewContentsElt = document.getElementById('preview-contents');
        $previewContentsElt = $(previewContentsElt);

        // Create a button from an extension listener
        var createBtn = function(listener) {
            var buttonGrpElt = crel('div', {
                class: 'btn-group'
            });
            var btnElt = listener();
            if(_.isString(btnElt)) {
                buttonGrpElt.innerHTML = btnElt;
            }
            else if(_.isElement(btnElt)) {
                buttonGrpElt.appendChild(btnElt);
            }
            return buttonGrpElt;
        };

        if(window.viewerMode === false) {
            // // Create accordion in settings dialog
            // var accordionHtml = _.chain(extensionList).sortBy(function(extension) {
            //     return extension.extensionName.toLowerCase();
            // }).reduce(function(html, extension) {
            //     return html + (extension.settingsBlock && !(window.lightMode === true && extension.disableInLight === true) ? _.template(settingsExtensionsAccordionHTML, {
            //         extensionId: extension.extensionId,
            //         extensionName: extension.extensionName,
            //         isOptional: extension.isOptional,
            //         settingsBlock: extension.settingsBlock
            //     }) : "");
            // }, "").value();
            // document.querySelector('.accordion-extensions').innerHTML = accordionHtml;
            
            // // Create extension buttons
            // logger.log("onCreateButton");
            // var onCreateButtonListenerList = getExtensionListenerList("onCreateButton");
            // var extensionButtonsFragment = document.createDocumentFragment();
            // _.each(onCreateButtonListenerList, function(listener) {
            //     extensionButtonsFragment.appendChild(createBtn(listener));
            // });
            // document.querySelector('.extension-buttons').appendChild(extensionButtonsFragment);

            // Create extension editor buttons
            // logger.log("onCreateEditorButton");
            var onCreateEditorButtonListenerList = getExtensionListenerList("onCreateEditorButton");
            var extensionEditorButtonsFragment = document.createDocumentFragment();
            _.each(onCreateEditorButtonListenerList, function(listener) {
                extensionEditorButtonsFragment.appendChild(createBtn(listener));
            });
            // var editorButtonsElt = document.querySelector('.extension-editor-buttons');
            // editorButtonsElt.appendChild(extensionEditorButtonsFragment);
        }

        // Create extension preview buttons
        // logger.log("onCreatePreviewButton");
        var onCreatePreviewButtonListenerList = getExtensionListenerList("onCreatePreviewButton");
        var extensionPreviewButtonsFragment = document.createDocumentFragment();
        _.each(onCreatePreviewButtonListenerList, function(listener) {
            extensionPreviewButtonsFragment.appendChild(createBtn(listener));
        });
        var previewButtonsElt = document.querySelector('.extension-preview-buttons');
        previewButtonsElt.appendChild(extensionPreviewButtonsFragment);

        // A bit of jQuery...
        var $previewButtonsElt = $(previewButtonsElt);
        var previewButtonsWidth = $previewButtonsElt.width();
        $previewButtonsElt.find('.btn-group').each(function() {
            var $btnGroupElt = $(this);
            // Align dropdown to the left of the screen
            $btnGroupElt.find('.dropdown-menu').css({
                right: -previewButtonsWidth + $btnGroupElt.width() + $btnGroupElt.position().left
            });
        });
        
        // Call onReady listeners
        onReady();
    };

    // For extensions that need to call other extensions
    eventMgr.onEventMgrCreated(eventMgr);
    return eventMgr;
});
define('shortcutMgr',[
    "underscore",
    "eventMgr",
    "utils",
], function(_, eventMgr, utils, settingsShortcutEntryHTML) {

    var shortcutMgr = {};

    var shortcuts = {
        'bold': {
            title: 'Strong',
            defaultKey: {
                win: 'Ctrl-B',
                mac: 'Command-B|Ctrl-B',
            },
            isPageDown: true
        },
        'italic': {
            title: 'Emphasis',
            defaultKey: {
                win: 'Ctrl-I',
                mac: 'Command-I|Ctrl-I',
            },
            isPageDown: true
        },
        'link': {
            title: 'Hyperlink',
            defaultKey: {
                win: 'Ctrl-L',
                mac: 'Command-L|Ctrl-L',
            },
            isPageDown: true
        },
        'quote': {
            title: 'Blockquote',
            defaultKey: {
                win: 'Ctrl-Q',
                mac: 'Command-Q|Ctrl-Q',
            },
            isPageDown: true
        },
        'code': {
            title: 'Code Sample',
            defaultKey: {
                win: 'Ctrl-K',
                mac: 'Command-K|Ctrl-K',
            },
            isPageDown: true
        },
        'image': {
            title: 'Image',
            defaultKey: {
                win: 'Ctrl-G',
                mac: 'Command-G|Ctrl-G',
            },
            isPageDown: true
        },
        'olist': {
            title: 'Numbered List',
            defaultKey: {
                win: 'Ctrl-O',
                mac: 'Command-O|Ctrl-O',
            },
            isPageDown: true
        },
        'ulist': {
            title: 'Bulleted List',
            defaultKey: {
                win: 'Ctrl-U',
                mac: 'Command-U|Ctrl-U',
            },
            isPageDown: true
        },
        'heading': {
            title: 'Heading',
            defaultKey: {
                win: 'Ctrl-H',
                mac: 'Command-H|Ctrl-H',
            },
            isPageDown: true
        },
        'hr': {
            title: 'Horizontal Rule',
            defaultKey: {
                win: 'Ctrl-R',
                mac: 'Command-R|Ctrl-R',
            },
            isPageDown: true
        },
        'undo': {
            title: 'Undo',
            defaultKey: {
                win: 'Ctrl-Z',
                mac: 'Command-Z',
            },
            exec: function(editor) {
                editor.undo();
            },
            isPageDown: true
        },
        'redo': {
            title: 'Redo',
            defaultKey: {
                win: 'Ctrl-Y|Ctrl-Shift-Z',
                mac: 'Command-Y|Command-Shift-Z',
            },
            exec: function(editor) {
                editor.redo();
            },
            isPageDown: true
        },
        'selectall': {
            title: 'Select All',
            defaultKey: {
                win: 'Ctrl-A',
                mac: 'Command-A',
            },
            exec: function(editor) {
                editor.selectAll();
            },
            readOnly: true
        },
        'removeline': {
            title: 'Remove Line',
            defaultKey: {
                win: 'Ctrl-D',
                mac: 'Command-D',
            },
            exec: function(editor) {
                editor.removeLines();
            },
            multiSelectAction: "forEachLine"
        },
        'duplicateSelection': {
            title: 'Duplicate Selection',
            defaultKey: {
                win: 'Ctrl-Shift-D',
                mac: 'Command-Shift-D',
            },
            exec: function(editor) {
                editor.duplicateSelection();
            },
            multiSelectAction: "forEach"
        },
        'sortlines': {
            title: 'Sort Lines',
            defaultKey: {
                win: 'Ctrl-Alt-S',
                mac: 'Command-Alt-S',
            },
            exec: function(editor) {
                editor.sortLines();
            },
            multiSelectAction: "forEachLine"
        },
        'modifyNumberUp': {
            title: 'Number Up',
            defaultKey: {
                win: 'Ctrl-Shift-Up',
                mac: 'Alt-Shift-Up',
            },
            exec: function(editor) {
                editor.modifyNumber(1);
            },
            multiSelectAction: "forEach"
        },
        'modifyNumberDown': {
            title: 'Number Down',
            defaultKey: {
                win: 'Ctrl-Shift-Down',
                mac: 'Alt-Shift-Down',
            },
            exec: function(editor) {
                editor.modifyNumber(-1);
            },
            multiSelectAction: "forEach"
        },
        'find': {
            title: 'Find',
            defaultKey: {
                win: 'Ctrl-F',
                mac: 'Command-F',
            },
            exec: function(editor) {
                var config = ace.require("ace/config");
                config.loadModule("ace/ext/searchbox", function(e) {
                    e.Search(editor);
                });
            },
            readOnly: true
        },
        'replace': {
            title: 'Replace',
            defaultKey: {
                win: 'Ctrl-Shift-F',
                mac: 'Command-Option-F',
            },
            exec: function(editor) {
                var config = require("ace/config");
                config.loadModule("ace/ext/searchbox", function(e) {
                    e.Search(editor, true);
                });
            },
            readOnly: true
        },
        'findnext': {
            title: 'Find Next',
            defaultKey: {
                win: 'Ctrl-P',
                mac: 'Command-P',
            },
            exec: function(editor) {
                editor.findNext();
            },
            readOnly: true
        },
        'findprevious': {
            title: 'Find Previous',
            defaultKey: {
                win: 'Ctrl-Shift-P',
                mac: 'Command-Shift-P',
            },
            exec: function(editor) {
                editor.findPrevious();
            },
            readOnly: true
        },
        'togglerecording': {
            title: 'Toggle Recording',
            defaultKey: {
                win: 'Ctrl-Alt-E',
                mac: 'Command-Option-E',
            },
            exec: function(editor) {
                editor.commands.toggleRecording(editor);
            },
            readOnly: true
        },
        'replaymacro': {
            title: 'Replay Macro',
            defaultKey: {
                win: 'Ctrl-Shift-E',
                mac: 'Command-Shift-E',
            },
            exec: function(editor) {
                editor.commands.replay(editor);
            },
            readOnly: true
        },
    };

    _.each(shortcuts, function(shortcut, key) {
        shortcut.name = key;
        shortcut.bindKey = shortcut.defaultKey;
    });

    shortcutMgr.configureAce = function(aceEditor) {
        _.each(shortcuts, function(shortcut) {
            shortcut.exec && aceEditor.commands.addCommand(_.pick(shortcut, 'name', 'bindKey', 'exec', 'readOnly', 'multiSelectAction'));
        });
    };
    
    shortcutMgr.getPagedownKeyStrokes = function() {
        return _.chain(shortcuts).where({
            isPageDown: true
        }).map(function(shortcut) {
            return [shortcut.name, shortcut.bindKey];
        }).object().value();
    };

    return shortcutMgr;
});
// needs Markdown.Converter.js at the moment

(function () {

    var util = {},
        position = {},
        ui = {},
        doc = window.document,
        re = window.RegExp,
        nav = window.navigator,
        SETTINGS = { lineLength: 72 },

    // Used to work around some browser bugs where we can't use feature testing.
        uaSniffed = {
            isIE: /msie/.test(nav.userAgent.toLowerCase()),
            isIE_5or6: /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase()),
            isOpera: /opera/.test(nav.userAgent.toLowerCase())
        };

    var defaultsStrings = {
        bold: getMsg("Strong") + ' <strong> Ctrl/Cmd+B',
        boldexample: getMsg("strong text"),

        italic: getMsg("Emphasis") + ' <em> Ctrl/Cmd+I',
        italicexample: getMsg("emphasized text"),

        link: getMsg("Hyperlink") + ' <a> Ctrl/Cmd+L',
        linkdescription: getMsg("enter link description here"),
        linkdialog: "<p><b>Insert Hyperlink</b></p><p>http://example.com/ \"optional title\"</p>",

        quote: getMsg("Blockquote") + ' <blockquote> Ctrl/Cmd+Q',
        quoteexample: getMsg("Blockquote"),

        code: getMsg("Code Sample") + ' <pre><code> Ctrl/Cmd+K',
        codeexample: getMsg("enter code here"),

        image: getMsg("Image") + '<img> Ctrl/Cmd+G',
        imagedescription: getMsg("enter image description here"),
        imagedialog: "<p><b>Insert Image</b></p><p>http://example.com/images/diagram.jpg \"optional title\"<br><br>Need <a href='http://www.google.com/search?q=free+image+hosting' target='_blank'>free image hosting?</a></p>",

        olist: getMsg("Numbered List") +' <ol> Ctrl/Cmd+O',
        ulist: getMsg("Bulleted List") +' <ul> Ctrl/Cmd+U',
        litem: getMsg("List item"),

        heading: getMsg("Heading") + ' <h1>/<h2> Ctrl/Cmd+H',
        headingexample: getMsg("Heading"),

        hr: getMsg("Horizontal Rule") + ' <hr> Ctrl/Cmd+R',

        undo: getMsg("Undo") + ' - Ctrl/Cmd+Z',
        redo: getMsg("Redo") + ' - Ctrl/Cmd+Y',
        redomac: getMsg("Redo") + " - Ctrl+Shift+Z",

        help: "Markdown Editing Help"
    };


    // -------------------------------------------------------------------
    //  YOUR CHANGES GO HERE
    //
    // I've tried to localize the things you are likely to change to
    // this area.
    // -------------------------------------------------------------------

    // The default text that appears in the dialog input box when entering
    // links.
    var imageDefaultText = "http://";
    var linkDefaultText = "http://";

    // -------------------------------------------------------------------
    //  END OF YOUR CHANGES
    // -------------------------------------------------------------------

    // options, if given, can have the following properties:
    //   options.helpButton = { handler: yourEventHandler }
    //   options.strings = { italicexample: "slanted text" }
    // `yourEventHandler` is the click handler for the help button.
    // If `options.helpButton` isn't given, not help button is created.
    // `options.strings` can have any or all of the same properties as
    // `defaultStrings` above, so you can just override some string displayed
    // to the user on a case-by-case basis, or translate all strings to
    // a different language.
    //
    // For backwards compatibility reasons, the `options` argument can also
    // be just the `helpButton` object, and `strings.help` can also be set via
    // `helpButton.title`. This should be considered legacy.
    //
    // The constructed editor object has the methods:
    // - getConverter() returns the markdown converter object that was passed to the constructor
    // - run() actually starts the editor; should be called after all necessary plugins are registered. Calling this more than once is a no-op.
    // - refreshPreview() forces the preview to be updated. This method is only available after run() was called.
    Markdown.EditorLight = function (markdownConverter, idPostfix, options) {
        
        options = options || {};

        if (typeof options.handler === "function") { //backwards compatible behavior
            options = { helpButton: options };
        }
        options.strings = options.strings || {};
        if (options.helpButton) {
            options.strings.help = options.strings.help || options.helpButton.title;
        }
        var getString = function (identifier) { return options.strings[identifier] || defaultsStrings[identifier]; }

        idPostfix = idPostfix || "";

        var hooks = this.hooks = new Markdown.HookCollection();
        hooks.addNoop("onPreviewRefresh");       // called with no arguments after the preview has been refreshed
        hooks.addNoop("postBlockquoteCreation"); // called with the user's selection *after* the blockquote was created; should return the actual to-be-inserted text
        hooks.addFalse("insertImageDialog");     /* called with one parameter: a callback to be called with the URL of the image. If the application creates
                                                  * its own image insertion dialog, this hook should return true, and the callback should be called with the chosen
                                                  * image url (or null if the user cancelled). If this hook returns false, the default dialog will be used.
                                                  */
        hooks.addFalse("insertLinkDialog");

        this.getConverter = function () { return markdownConverter; }

        var that = this,
            panels;

        var undoManager;
        this.run = function (previewWrapper) {
            if (panels)
                return; // already initialized

            panels = new PanelCollection(idPostfix);
            var commandManager = new CommandManager(hooks, getString);
            var previewManager = new PreviewManager(markdownConverter, panels, function () { hooks.onPreviewRefresh(); }, previewWrapper);
            var uiManager;

            if (!/\?noundo/.test(doc.location.href)) {
                undoManager = new UndoManager(function () {
                    previewManager.refresh();
                    if (uiManager) // not available on the first call
                        uiManager.setUndoRedoButtonStates();
                }, panels);
                this.textOperation = function (f) {
                    undoManager.setCommandMode();
                    f();
                    that.refreshPreview();
                }
            }

            uiManager = new UIManager(idPostfix, panels, undoManager, previewManager, commandManager, options.helpButton, getString);
            uiManager.setUndoRedoButtonStates();

            var forceRefresh = that.refreshPreview = function () { previewManager.refresh(true); };

            //Not necessary
            //forceRefresh();
            that.undoManager = undoManager;
            that.uiManager = uiManager;
        };

    }

    // before: contains all the text in the input box BEFORE the selection.
    // after: contains all the text in the input box AFTER the selection.
    function Chunks() { }

    // startRegex: a regular expression to find the start tag
    // endRegex: a regular expresssion to find the end tag
    Chunks.prototype.findTags = function (startRegex, endRegex) {

        var chunkObj = this;
        var regex;

        if (startRegex) {

            regex = util.extendRegExp(startRegex, "", "$");

            this.before = this.before.replace(regex,
                function (match) {
                    chunkObj.startTag = chunkObj.startTag + match;
                    return "";
                });

            regex = util.extendRegExp(startRegex, "^", "");

            this.selection = this.selection.replace(regex,
                function (match) {
                    chunkObj.startTag = chunkObj.startTag + match;
                    return "";
                });
        }

        if (endRegex) {

            regex = util.extendRegExp(endRegex, "", "$");

            this.selection = this.selection.replace(regex,
                function (match) {
                    chunkObj.endTag = match + chunkObj.endTag;
                    return "";
                });

            regex = util.extendRegExp(endRegex, "^", "");

            this.after = this.after.replace(regex,
                function (match) {
                    chunkObj.endTag = match + chunkObj.endTag;
                    return "";
                });
        }
    };

    // If remove is false, the whitespace is transferred
    // to the before/after regions.
    //
    // If remove is true, the whitespace disappears.
    Chunks.prototype.trimWhitespace = function (remove) {
        var beforeReplacer, afterReplacer, that = this;
        if (remove) {
            beforeReplacer = afterReplacer = "";
        } else {
            beforeReplacer = function (s) { that.before += s; return ""; }
            afterReplacer = function (s) { that.after = s + that.after; return ""; }
        }

        this.selection = this.selection.replace(/^(\s*)/, beforeReplacer).replace(/(\s*)$/, afterReplacer);
    };


    Chunks.prototype.skipLines = function (nLinesBefore, nLinesAfter, findExtraNewlines) {

        if (nLinesBefore === undefined) {
            nLinesBefore = 1;
        }

        if (nLinesAfter === undefined) {
            nLinesAfter = 1;
        }

        nLinesBefore++;
        nLinesAfter++;

        var regexText;
        var replacementText;

        // chrome bug ... documented at: http://meta.stackoverflow.com/questions/63307/blockquote-glitch-in-editor-in-chrome-6-and-7/65985#65985
        if (navigator.userAgent.match(/Chrome/)) {
            "X".match(/()./);
        }

        this.selection = this.selection.replace(/(^\n*)/, "");

        this.startTag = this.startTag + re.$1;

        this.selection = this.selection.replace(/(\n*$)/, "");
        this.endTag = this.endTag + re.$1;
        this.startTag = this.startTag.replace(/(^\n*)/, "");
        this.before = this.before + re.$1;
        this.endTag = this.endTag.replace(/(\n*$)/, "");
        this.after = this.after + re.$1;

        if (this.before) {

            regexText = replacementText = "";

            while (nLinesBefore--) {
                regexText += "\\n?";
                replacementText += "\n";
            }

            if (findExtraNewlines) {
                regexText = "\\n*";
            }
            this.before = this.before.replace(new re(regexText + "$", ""), replacementText);
        }

        if (this.after) {

            regexText = replacementText = "";

            while (nLinesAfter--) {
                regexText += "\\n?";
                replacementText += "\n";
            }
            if (findExtraNewlines) {
                regexText = "\\n*";
            }

            this.after = this.after.replace(new re(regexText, ""), replacementText);
        }
    };

    // end of Chunks

    // A collection of the important regions on the page.
    // Cached so we don't have to keep traversing the DOM.
    // Also holds ieCachedRange and ieCachedScrollTop, where necessary; working around
    // this issue:
    // Internet explorer has problems with CSS sprite buttons that use HTML
    // lists.  When you click on the background image "button", IE will
    // select the non-existent link text and discard the selection in the
    // textarea.  The solution to this is to cache the textarea selection
    // on the button's mousedown event and set a flag.  In the part of the
    // code where we need to grab the selection, we check for the flag
    // and, if it's set, use the cached area instead of querying the
    // textarea.
    //
    // This ONLY affects Internet Explorer (tested on versions 6, 7
    // and 8) and ONLY on button clicks.  Keyboard shortcuts work
    // normally since the focus never leaves the textarea.
    function PanelCollection(postfix) {
        this.buttonBar = doc.getElementById("wmd-button-bar" + postfix);
        this.preview = doc.getElementById("wmd-preview" + postfix);
        this.input = doc.getElementById("wmd-input" + postfix);
    };

    // Returns true if the DOM element is visible, false if it's hidden.
    // Checks if display is anything other than none.
    util.isVisible = function (elem) {

        if (window.getComputedStyle) {
            // Most browsers
            return window.getComputedStyle(elem, null).getPropertyValue("display") !== "none";
        }
        else if (elem.currentStyle) {
            // IE
            return elem.currentStyle["display"] !== "none";
        }
    };


    // Adds a listener callback to a DOM element which is fired on a specified
    // event.
    util.addEvent = function (elem, event, listener) {
        if (elem.attachEvent) {
            // IE only.  The "on" is mandatory.
            elem.attachEvent("on" + event, listener);
        }
        else {
            // Other browsers.
            elem.addEventListener(event, listener, false);
        }
    };


    // Removes a listener callback from a DOM element which is fired on a specified
    // event.
    util.removeEvent = function (elem, event, listener) {
        if (elem.detachEvent) {
            // IE only.  The "on" is mandatory.
            elem.detachEvent("on" + event, listener);
        }
        else {
            // Other browsers.
            elem.removeEventListener(event, listener, false);
        }
    };

    // Converts \r\n and \r to \n.
    util.fixEolChars = function (text) {
        text = text.replace(/\r\n/g, "\n");
        text = text.replace(/\r/g, "\n");
        return text;
    };

    // Extends a regular expression.  Returns a new RegExp
    // using pre + regex + post as the expression.
    // Used in a few functions where we have a base
    // expression and we want to pre- or append some
    // conditions to it (e.g. adding "$" to the end).
    // The flags are unchanged.
    //
    // regex is a RegExp, pre and post are strings.
    util.extendRegExp = function (regex, pre, post) {

        if (pre === null || pre === undefined) {
            pre = "";
        }
        if (post === null || post === undefined) {
            post = "";
        }

        var pattern = regex.toString();
        var flags;

        // Replace the flags with empty space and store them.
        pattern = pattern.replace(/\/([gim]*)$/, function (wholeMatch, flagsPart) {
            flags = flagsPart;
            return "";
        });

        // Remove the slash delimiters on the regular expression.
        pattern = pattern.replace(/(^\/|\/$)/g, "");
        pattern = pre + pattern + post;

        return new re(pattern, flags);
    }

    // UNFINISHED
    // The assignment in the while loop makes jslint cranky.
    // I'll change it to a better loop later.
    position.getTop = function (elem, isInner) {
        var result = elem.offsetTop;
        if (!isInner) {
            while (elem = elem.offsetParent) {
                result += elem.offsetTop;
            }
        }
        return result;
    };

    position.getHeight = function (elem) {
        return elem.offsetHeight || elem.scrollHeight;
    };

    position.getWidth = function (elem) {
        return elem.offsetWidth || elem.scrollWidth;
    };

    position.getPageSize = function () {

        var scrollWidth, scrollHeight;
        var innerWidth, innerHeight;

        // It's not very clear which blocks work with which browsers.
        if (self.innerHeight && self.scrollMaxY) {
            scrollWidth = doc.body.scrollWidth;
            scrollHeight = self.innerHeight + self.scrollMaxY;
        }
        else if (doc.body.scrollHeight > doc.body.offsetHeight) {
            scrollWidth = doc.body.scrollWidth;
            scrollHeight = doc.body.scrollHeight;
        }
        else {
            scrollWidth = doc.body.offsetWidth;
            scrollHeight = doc.body.offsetHeight;
        }

        if (self.innerHeight) {
            // Non-IE browser
            innerWidth = self.innerWidth;
            innerHeight = self.innerHeight;
        }
        else if (doc.documentElement && doc.documentElement.clientHeight) {
            // Some versions of IE (IE 6 w/ a DOCTYPE declaration)
            innerWidth = doc.documentElement.clientWidth;
            innerHeight = doc.documentElement.clientHeight;
        }
        else if (doc.body) {
            // Other versions of IE
            innerWidth = doc.body.clientWidth;
            innerHeight = doc.body.clientHeight;
        }

        var maxWidth = Math.max(scrollWidth, innerWidth);
        var maxHeight = Math.max(scrollHeight, innerHeight);
        return [maxWidth, maxHeight, innerWidth, innerHeight];
    };

    // Handles pushing and popping TextareaStates for undo/redo commands.
    // I should rename the stack variables to list.
    function UndoManager(callback, panels) {

        var undoObj = this;
        var undoStack = []; // A stack of undo states
        var stackPtr = 0; // The index of the current state
        var mode = "none";
        var lastState; // The last state
        var timer; // The setTimeout handle for cancelling the timer
        var inputStateObj;

        // Set the mode for later logic steps.
        var setMode = function (newMode, noSave) {
            if (mode != newMode) {
                mode = newMode;
                if (!noSave) {
                    saveState();
                }
            }

            if (!uaSniffed.isIE || mode != "moving") {
                timer = setTimeout(refreshState, 1);
            }
            else {
                inputStateObj = null;
            }
        };

        var refreshState = function (isInitialState) {
            inputStateObj = new TextareaState(panels, isInitialState);
            timer = undefined;
        };

        this.setCommandMode = function () {
            mode = "command";
            saveState();
            timer = setTimeout(refreshState, 0);
        };

        this.canUndo = function () {
            return stackPtr > 1;
        };

        this.canRedo = function () {
            if (undoStack[stackPtr + 1]) {
                return true;
            }
            return false;
        };

        // Removes the last state and restores it.
        this.undo = function () {

            if (undoObj.canUndo()) {
                if (lastState) {
                    // What about setting state -1 to null or checking for undefined?
                    lastState.restore();
                    lastState = null;
                }
                else {
                    undoStack[stackPtr] = new TextareaState(panels);
                    undoStack[--stackPtr].restore();

                    if (callback) {
                        callback();
                    }
                }
            }

            mode = "none";
            panels.input.focus();
            refreshState();
        };

        // Redo an action.
        this.redo = function () {

            if (undoObj.canRedo()) {

                undoStack[++stackPtr].restore();

                if (callback) {
                    callback();
                }
            }

            mode = "none";
            panels.input.focus();
            refreshState();
        };

        // Push the input area state to the stack.
        var saveState = function () {
            var currState = inputStateObj || new TextareaState(panels);

            if (!currState) {
                return false;
            }
            if (mode == "moving") {
                if (!lastState) {
                    lastState = currState;
                }
                return;
            }
            if (lastState) {
                if (undoStack[stackPtr - 1].text != lastState.text) {
                    undoStack[stackPtr++] = lastState;
                }
                lastState = null;
            }
            undoStack[stackPtr++] = currState;
            undoStack[stackPtr + 1] = null;
            if (callback) {
                callback();
            }
        };

        var handleCtrlYZ = function (event) {

            var handled = false;

            if ((event.ctrlKey || event.metaKey) && !event.altKey) {

                // IE and Opera do not support charCode.
                var keyCode = event.charCode || event.keyCode;
                var keyCodeChar = String.fromCharCode(keyCode);

                switch (keyCodeChar.toLowerCase()) {

                    case "y":
                        undoObj.redo();
                        handled = true;
                        break;

                    case "z":
                        if (!event.shiftKey) {
                            undoObj.undo();
                        }
                        else {
                            undoObj.redo();
                        }
                        handled = true;
                        break;
                }
            }

            if (handled) {
                if (event.preventDefault) {
                    event.preventDefault();
                }
                if (window.event) {
                    window.event.returnValue = false;
                }
                return;
            }
        };

        // Set the mode depending on what is going on in the input area.
        var handleModeChange = function (event) {

            if (!event.ctrlKey && !event.metaKey) {

                var keyCode = event.keyCode;

                if ((keyCode >= 33 && keyCode <= 40) || (keyCode >= 63232 && keyCode <= 63235)) {
                    // 33 - 40: page up/dn and arrow keys
                    // 63232 - 63235: page up/dn and arrow keys on safari
                    setMode("moving");
                }
                else if (keyCode == 8 || keyCode == 46 || keyCode == 127) {
                    // 8: backspace
                    // 46: delete
                    // 127: delete
                    setMode("deleting");
                }
                else if (keyCode == 13) {
                    // 13: Enter
                    setMode("newlines");
                }
                else if (keyCode == 27) {
                    // 27: escape
                    setMode("escape");
                }
                else if ((keyCode < 16 || keyCode > 20) && keyCode != 91) {
                    // 16-20 are shift, etc.
                    // 91: left window key
                    // I think this might be a little messed up since there are
                    // a lot of nonprinting keys above 20.
                    setMode("typing");
                }
            }
        };

        var setEventHandlers = function () {
            util.addEvent(panels.input, "keypress", function (event) {
                // keyCode 89: y
                // keyCode 90: z
                if ((event.ctrlKey || event.metaKey) && !event.altKey && (event.keyCode == 89 || event.keyCode == 90)) {
                    event.preventDefault();
                }
            });

            var handlePaste = function () {
                if (uaSniffed.isIE || (inputStateObj && inputStateObj.text != panels.input.value)) {
                    if (timer == undefined) {
                        mode = "paste";
                        saveState();
                        refreshState();
                    }
                }
            };

            //util.addEvent(panels.input, "keydown", handleCtrlYZ);
            util.addEvent(panels.input, "keydown", handleModeChange);
            util.addEvent(panels.input, "mousedown", function () {
                setMode("moving");
            });

            panels.input.onpaste = handlePaste;
            panels.input.ondrop = handlePaste;
        };

        var init = function () {
            setEventHandlers();
            refreshState(true);
            //Not necessary
            //saveState();
        };
        
        this.reinit = function(content, start, end, scrollTop) {
            undoStack = [];
            stackPtr = 0;
            mode = "none";
            lastState = undefined;
            timer = undefined;
            refreshState();
            inputStateObj.text = content;
            inputStateObj.start = start;
            inputStateObj.end = end;
            inputStateObj.scrollTop = scrollTop;
            inputStateObj.setInputAreaSelection();
            saveState();
        };
        this.setMode = setMode;

        init();
    }

    // end of UndoManager

    // The input textarea state/contents.
    // This is used to implement undo/redo by the undo manager.
    function TextareaState(panels, isInitialState) {

        // Aliases
        var stateObj = this;
        var inputArea = panels.input;
        this.init = function () {
            if (!util.isVisible(inputArea)) {
                return;
            }
            if (!isInitialState && doc.activeElement && doc.activeElement !== inputArea) { // this happens when tabbing out of the input box
                return;
            }

            this.setInputAreaSelectionStartEnd();
            this.scrollTop = inputArea.scrollTop;
            if (!this.text && inputArea.selectionStart || inputArea.selectionStart === 0) {
                this.text = inputArea.value;
            }

        }

        // Sets the selected text in the input box after we've performed an
        // operation.
        this.setInputAreaSelection = function () {

            if (!util.isVisible(inputArea)) {
                return;
            }

            if (inputArea.selectionStart !== undefined && !uaSniffed.isOpera) {

                inputArea.focus();
                inputArea.selectionStart = stateObj.start;
                inputArea.selectionEnd = stateObj.end;
                inputArea.scrollTop = stateObj.scrollTop;
            }
            else if (doc.selection) {

                if (doc.activeElement && doc.activeElement !== inputArea) {
                    return;
                }

                inputArea.focus();
                var range = inputArea.createTextRange();
                range.moveStart("character", -inputArea.value.length);
                range.moveEnd("character", -inputArea.value.length);
                range.moveEnd("character", stateObj.end);
                range.moveStart("character", stateObj.start);
                range.select();
            }
        };

        this.setInputAreaSelectionStartEnd = function () {

            if (!panels.ieCachedRange && (inputArea.selectionStart || inputArea.selectionStart === 0)) {

                stateObj.start = inputArea.selectionStart;
                stateObj.end = inputArea.selectionEnd;
            }
            else if (doc.selection) {

                stateObj.text = util.fixEolChars(inputArea.value);

                // IE loses the selection in the textarea when buttons are
                // clicked.  On IE we cache the selection. Here, if something is cached,
                // we take it.
                var range = panels.ieCachedRange || doc.selection.createRange();

                var fixedRange = util.fixEolChars(range.text);
                var marker = "\x07";
                var markedRange = marker + fixedRange + marker;
                range.text = markedRange;
                var inputText = util.fixEolChars(inputArea.value);

                range.moveStart("character", -markedRange.length);
                range.text = fixedRange;

                stateObj.start = inputText.indexOf(marker);
                stateObj.end = inputText.lastIndexOf(marker) - marker.length;

                var len = stateObj.text.length - util.fixEolChars(inputArea.value).length;

                if (len) {
                    range.moveStart("character", -fixedRange.length);
                    while (len--) {
                        fixedRange += "\n";
                        stateObj.end += 1;
                    }
                    range.text = fixedRange;
                }

                if (panels.ieCachedRange)
                    stateObj.scrollTop = panels.ieCachedScrollTop; // this is set alongside with ieCachedRange

                panels.ieCachedRange = null;

                this.setInputAreaSelection();
            }
        };

        // Restore this state into the input area.
        this.restore = function () {

            if (stateObj.text != undefined && stateObj.text != inputArea.value) {
                inputArea.value = stateObj.text;
            }
            this.setInputAreaSelection();
            inputArea.scrollTop = stateObj.scrollTop;
        };

        // Gets a collection of HTML chunks from the inptut textarea.
        this.getChunks = function () {

            var chunk = new Chunks();
            chunk.before = util.fixEolChars(stateObj.text.substring(0, stateObj.start));
            chunk.startTag = "";
            chunk.selection = util.fixEolChars(stateObj.text.substring(stateObj.start, stateObj.end));
            chunk.endTag = "";
            chunk.after = util.fixEolChars(stateObj.text.substring(stateObj.end));
            chunk.scrollTop = stateObj.scrollTop;

            return chunk;
        };

        // Sets the TextareaState properties given a chunk of markdown.
        this.setChunks = function (chunk) {

            chunk.before = chunk.before + chunk.startTag;
            chunk.after = chunk.endTag + chunk.after;

            this.start = chunk.before.length;
            this.end = chunk.before.length + chunk.selection.length;
            this.text = chunk.before + chunk.selection + chunk.after;
            this.scrollTop = chunk.scrollTop;
        };
        this.init();
    };

    function PreviewManager(converter, panels, previewRefreshCallback, previewWrapper) {

        var managerObj = this;
        var timeout;
        var elapsedTime;
        var oldInputText;
        var maxDelay = 3000;
        var startType = "delayed"; // The other legal value is "manual"

        // Adds event listeners to elements
        var setupEvents = function (inputElem, listener) {

            util.addEvent(inputElem, "input", listener);
            inputElem.onpaste = listener;
            inputElem.ondrop = listener;

            util.addEvent(inputElem, "keypress", listener);
            util.addEvent(inputElem, "keydown", listener);
        };

        var getDocScrollTop = function () {

            var result = 0;

            if (window.innerHeight) {
                result = window.pageYOffset;
            }
            else
                if (doc.documentElement && doc.documentElement.scrollTop) {
                    result = doc.documentElement.scrollTop;
                }
                else
                    if (doc.body) {
                        result = doc.body.scrollTop;
                    }

            return result;
        };

        var makePreviewHtml = function () {

            // If there is no registered preview panel
            // there is nothing to do.
            if (!panels.preview)
                return;


            var text = panels.input.value;
            if (text && text == oldInputText) {
                return; // Input text hasn't changed.
            }
            else {
                oldInputText = text;
            }

            var prevTime = new Date().getTime();

            text = converter.makeHtml(text);

            // Calculate the processing time of the HTML creation.
            // It's used as the delay time in the event listener.
            var currTime = new Date().getTime();
            elapsedTime = currTime - prevTime;

            pushPreviewHtml(text);
        };
        if(previewWrapper !== undefined) {
        	makePreviewHtml = previewWrapper(makePreviewHtml);
        }

        // setTimeout is already used.  Used as an event listener.
        var applyTimeout = function () {

            if (timeout) {
                clearTimeout(timeout);
                timeout = undefined;
            }

            if (startType !== "manual") {

                var delay = 0;

                if (startType === "delayed") {
                    delay = elapsedTime;
                }

                if (delay > maxDelay) {
                    delay = maxDelay;
                }
                timeout = setTimeout(makePreviewHtml, delay);
            }
        };

        var getScaleFactor = function (panel) {
            if (panel.scrollHeight <= panel.clientHeight) {
                return 1;
            }
            return panel.scrollTop / (panel.scrollHeight - panel.clientHeight);
        };

        var setPanelScrollTops = function () {
            if (panels.preview) {
                panels.preview.scrollTop = (panels.preview.scrollHeight - panels.preview.clientHeight) * getScaleFactor(panels.preview);
            }
        };

        this.refresh = function (requiresRefresh) {

            if (requiresRefresh) {
                oldInputText = "";
                makePreviewHtml();
            }
            else {
                applyTimeout();
            }
        };

        this.processingTime = function () {
            return elapsedTime;
        };

        var isFirstTimeFilled = true;

        // IE doesn't let you use innerHTML if the element is contained somewhere in a table
        // (which is the case for inline editing) -- in that case, detach the element, set the
        // value, and reattach. Yes, that *is* ridiculous.
        var ieSafePreviewSet = function (text) {
            var preview = panels.preview;
            var parent = preview.parentNode;
            var sibling = preview.nextSibling;
            parent.removeChild(preview);
            preview.innerHTML = text;
            if (!sibling)
                parent.appendChild(preview);
            else
                parent.insertBefore(preview, sibling);
        }

        var nonSuckyBrowserPreviewSet = function (text) {
            panels.preview.innerHTML = text;
        }

        var previewSetter;

        var previewSet = function (text) {
            if (previewSetter)
                return previewSetter(text);

            try {
                nonSuckyBrowserPreviewSet(text);
                previewSetter = nonSuckyBrowserPreviewSet;
            } catch (e) {
                previewSetter = ieSafePreviewSet;
                previewSetter(text);
            }
        };

        var pushPreviewHtml = function (text) {

            var emptyTop = position.getTop(panels.input) - getDocScrollTop();

            if (panels.preview) {
                previewSet(text);
                previewRefreshCallback();
            }

            setPanelScrollTops();

            if (isFirstTimeFilled) {
                isFirstTimeFilled = false;
                return;
            }

            var fullTop = position.getTop(panels.input) - getDocScrollTop();

            if (uaSniffed.isIE) {
                setTimeout(function () {
                    window.scrollBy(0, fullTop - emptyTop);
                }, 0);
            }
            else {
                window.scrollBy(0, fullTop - emptyTop);
            }
        };

        var init = function () {

            setupEvents(panels.input, applyTimeout);
            //Not necessary
            //makePreviewHtml();

            if (panels.preview) {
                panels.preview.scrollTop = 0;
            }
        };

        init();
    };

    // Creates the background behind the hyperlink text entry box.
    // And download dialog
    // Most of this has been moved to CSS but the div creation and
    // browser-specific hacks remain here.
    ui.createBackground = function () {

        var background = doc.createElement("div"),
            style = background.style;
        
        background.className = "wmd-prompt-background";
        
        style.position = "absolute";
        style.top = "0";

        style.zIndex = "1000";

        if (uaSniffed.isIE) {
            style.filter = "alpha(opacity=50)";
        }
        else {
            style.opacity = "0.5";
        }

        var pageSize = position.getPageSize();
        style.height = pageSize[1] + "px";

        if (uaSniffed.isIE) {
            style.left = doc.documentElement.scrollLeft;
            style.width = doc.documentElement.clientWidth;
        }
        else {
            style.left = "0";
            style.width = "100%";
        }

        doc.body.appendChild(background);
        return background;
    };

    // This simulates a modal dialog box and asks for the URL when you
    // click the hyperlink or image buttons.
    //
    // text: The html for the input box.
    // defaultInputText: The default value that appears in the input box.
    // callback: The function which is executed when the prompt is dismissed, either via OK or Cancel.
    //      It receives a single argument; either the entered text (if OK was chosen) or null (if Cancel
    //      was chosen).
    ui.prompt = function (text, defaultInputText, callback) {

        // These variables need to be declared at this level since they are used
        // in multiple functions.
        var dialog;         // The dialog box.
        var input;         // The text box where you enter the hyperlink.


        if (defaultInputText === undefined) {
            defaultInputText = "";
        }

        // Used as a keydown event handler. Esc dismisses the prompt.
        // Key code 27 is ESC.
        var checkEscape = function (key) {
            var code = (key.charCode || key.keyCode);
            if (code === 27) {
                close(true);
            }
        };

        // Dismisses the hyperlink input box.
        // isCancel is true if we don't care about the input text.
        // isCancel is false if we are going to keep the text.
        var close = function (isCancel) {
            util.removeEvent(doc.body, "keydown", checkEscape);
            var text = input.value;

            if (isCancel) {
                text = null;
            }
            else {
                // Fixes common pasting errors.
                text = text.replace(/^http:\/\/(https?|ftp):\/\//, '$1://');
                if (!/^(?:https?|ftp):\/\//.test(text))
                    text = 'http://' + text;
            }

            dialog.parentNode.removeChild(dialog);

            callback(text);
            return false;
        };



        // Create the text input box form/window.
        var createDialog = function () {

            // The main dialog box.
            dialog = doc.createElement("div");
            dialog.className = "wmd-prompt-dialog";
            dialog.style.padding = "10px;";
            dialog.style.position = "fixed";
            dialog.style.width = "400px";
            dialog.style.zIndex = "1001";

            // The dialog text.
            var question = doc.createElement("div");
            question.innerHTML = text;
            question.style.padding = "5px";
            dialog.appendChild(question);

            // The web form container for the text box and buttons.
            var form = doc.createElement("form"),
                style = form.style;
            form.onsubmit = function () { return close(false); };
            style.padding = "0";
            style.margin = "0";
            style.cssFloat = "left";
            style.width = "100%";
            style.textAlign = "center";
            style.position = "relative";
            dialog.appendChild(form);

            // The input text box
            input = doc.createElement("input");
            input.type = "text";
            input.value = defaultInputText;
            style = input.style;
            style.display = "block";
            style.width = "80%";
            style.marginLeft = style.marginRight = "auto";
            form.appendChild(input);

            // The ok button
            var okButton = doc.createElement("input");
            okButton.type = "button";
            okButton.onclick = function () { return close(false); };
            okButton.value = "OK";
            style = okButton.style;
            style.margin = "10px";
            style.display = "inline";
            style.width = "7em";


            // The cancel button
            var cancelButton = doc.createElement("input");
            cancelButton.type = "button";
            cancelButton.onclick = function () { return close(true); };
            cancelButton.value = "Cancel";
            style = cancelButton.style;
            style.margin = "10px";
            style.display = "inline";
            style.width = "7em";

            form.appendChild(okButton);
            form.appendChild(cancelButton);

            util.addEvent(doc.body, "keydown", checkEscape);
            dialog.style.top = "50%";
            dialog.style.left = "50%";
            dialog.style.display = "block";
            if (uaSniffed.isIE_5or6) {
                dialog.style.position = "absolute";
                dialog.style.top = doc.documentElement.scrollTop + 200 + "px";
                dialog.style.left = "50%";
            }
            doc.body.appendChild(dialog);

            // This has to be done AFTER adding the dialog to the form if you
            // want it to be centered.
            dialog.style.marginTop = -(position.getHeight(dialog) / 2) + "px";
            dialog.style.marginLeft = -(position.getWidth(dialog) / 2) + "px";

        };

        // Why is this in a zero-length timeout?
        // Is it working around a browser bug?
        setTimeout(function () {

            createDialog();

            var defTextLen = defaultInputText.length;
            if (input.selectionStart !== undefined) {
                input.selectionStart = 0;
                input.selectionEnd = defTextLen;
            }
            else if (input.createTextRange) {
                var range = input.createTextRange();
                range.collapse(false);
                range.moveStart("character", -defTextLen);
                range.moveEnd("character", defTextLen);
                range.select();
            }

            input.focus();
        }, 0);
    };

    function UIManager(postfix, panels, undoManager, previewManager, commandManager, helpOptions, getString) {

        var inputBox = panels.input,
            buttons = {}; // buttons.undo, buttons.link, etc. The actual DOM elements.

        makeSpritedButtonRow();

        var keyEvent = "keydown";
        if (uaSniffed.isOpera) {
            keyEvent = "keypress";
        }

        util.addEvent(inputBox, keyEvent, function (key) {

            // Check to see if we have a button key and, if so execute the callback.
            if ((key.ctrlKey || key.metaKey) && !key.altKey) {

                var keyCode = key.charCode || key.keyCode;
                var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();

                switch (keyCodeStr) {
                    case "b":
                        doClick(buttons.bold);
                        break;
                    case "i":
                        doClick(buttons.italic);
                        break;
                    case "l":
                        doClick(buttons.link);
                        break;
                    case "q":
                        doClick(buttons.quote);
                        break;
                    case "k":
                        doClick(buttons.code);
                        break;
                    case "g":
                        doClick(buttons.image);
                        break;
                    case "o":
                        doClick(buttons.olist);
                        break;
                    case "u":
                        doClick(buttons.ulist);
                        break;
                    case "h":
                        doClick(buttons.heading);
                        break;
                    case "r":
                        doClick(buttons.hr);
                        break;
                    case "y":
                        doClick(buttons.redo);
                        break;
                    case "z":
                        if (key.shiftKey) {
                            doClick(buttons.redo);
                        }
                        else {
                            doClick(buttons.undo);
                        }
                        break;
                    case "v":
                        undoManager.setMode("typing");
                        return;
                    case "x":
                        undoManager.setMode("deleting");
                        return;
                    default:
                        return;
                }


                if (key.preventDefault) {
                    key.preventDefault();
                }

                if (window.event) {
                    window.event.returnValue = false;
                }
            }
        });

        // Auto-indent on shift-enter
        util.addEvent(inputBox, "keyup", function (key) {
            if (key.shiftKey && !key.ctrlKey && !key.metaKey) {
                var keyCode = key.charCode || key.keyCode;
                // Character 13 is Enter
                if (keyCode === 13) {
                    var fakeButton = {};
                    fakeButton.textOp = bindCommand("doAutoindent");
                    doClick(fakeButton);
                }
            }
        });

        // special handler because IE clears the context of the textbox on ESC
        if (uaSniffed.isIE) {
            util.addEvent(inputBox, "keydown", function (key) {
                var code = key.keyCode;
                if (code === 27) {
                    return false;
                }
            });
        }
       
        // life 新添加函数
        // life
        // isImage 2015/3/1
        function insertLinkLife(link, text, isImage) {
            inputBox.focus();
            if (undoManager) {
                undoManager.setCommandMode();
            }

            var state = new TextareaState(panels);

            if (!state) {
                return;
            }

            var chunks = state.getChunks(); // 得到chunk
            var fixupInputArea = function () {
                inputBox.focus();

                if (chunks) {
                    state.setChunks(chunks);
                }

                state.restore();
                previewManager.refresh();
            };

            var a = commandProto.insertLink(chunks, fixupInputArea, link, text, isImage);
            if(!a) fixupInputArea();
        }
       
        // life
        MD.insertLink = insertLinkLife;
        MD.insertLink2 = insertLinkLife;

        // Perform the button's action.
        function doClick(button) {

            inputBox.focus();
            var linkOrImage = button.id == "wmd-link-button" || button.id == "wmd-image-button";

            if (button.textOp) {

                if (undoManager && !linkOrImage) {
                    undoManager.setCommandMode();
                }

                var state = new TextareaState(panels);

                if (!state) {
                    return;
                }

                var chunks = state.getChunks();

                // Some commands launch a "modal" prompt dialog.  Javascript
                // can't really make a modal dialog box and the WMD code
                // will continue to execute while the dialog is displayed.
                // This prevents the dialog pattern I'm used to and means
                // I can't do something like this:
                //
                // var link = CreateLinkDialog();
                // makeMarkdownLink(link);
                //
                // Instead of this straightforward method of handling a
                // dialog I have to pass any code which would execute
                // after the dialog is dismissed (e.g. link creation)
                // in a function parameter.
                //
                // Yes this is awkward and I think it sucks, but there's
                // no real workaround.  Only the image and link code
                // create dialogs and require the function pointers.
                var fixupInputArea = function () {

                    inputBox.focus();

                    if (chunks) {
                        state.setChunks(chunks);
                    }

                    state.restore();
                    previewManager.refresh();
                };

                var noCleanup = button.textOp(chunks, fixupInputArea);

                if (!noCleanup) {
                    fixupInputArea();
                    if(!linkOrImage) {
                        inputBox.dispatchEvent(new Event('input'));
                    }
                }

            }

            if (button.execute) {
                button.execute(undoManager);
            }
        };

        function setupButton(button, isEnabled) {

            var normalYShift = "0px";
            var disabledYShift = "-20px";
            var highlightYShift = "-40px";
            var image = button.getElementsByTagName("span")[0];
            if (isEnabled) {
                image.style.backgroundPosition = button.XShift + " " + normalYShift;
                button.onmouseover = function () {
                    image.style.backgroundPosition = this.XShift + " " + highlightYShift;
                };

                button.onmouseout = function () {
                    image.style.backgroundPosition = this.XShift + " " + normalYShift;
                };

                // IE tries to select the background image "button" text (it's
                // implemented in a list item) so we have to cache the selection
                // on mousedown.
                if (uaSniffed.isIE) {
                    button.onmousedown = function () {
                        if (doc.activeElement && doc.activeElement !== panels.input) { // we're not even in the input box, so there's no selection
                            return;
                        }
                        panels.ieCachedRange = document.selection.createRange();
                        panels.ieCachedScrollTop = panels.input.scrollTop;
                    };
                }

                if (!button.isHelp) {
                    button.onclick = function () {
                        if (this.onmouseout) {
                            this.onmouseout();
                        }
                        doClick(this);
                        return false;
                    }
                }
                button.className = button.className.replace(/ disabled/g, "");
            }
            else {
                image.style.backgroundPosition = button.XShift + " " + disabledYShift;
                button.onmouseover = button.onmouseout = button.onclick = function () { };
                button.className += " disabled";
            }
        }

        function bindCommand(method) {
            if (typeof method === "string")
                method = commandManager[method];
            return function () { method.apply(commandManager, arguments); }
        }

        function makeSpritedButtonRow() {

            var buttonBar = panels.buttonBar;

            var normalYShift = "0px";
            var disabledYShift = "-20px";
            var highlightYShift = "-40px";

            var buttonRow = document.createElement("ul");
            buttonRow.id = "wmd-button-row" + postfix;
            buttonRow.className = 'wmd-button-row';
            buttonRow = buttonBar.appendChild(buttonRow);
            var xPosition = 0;
            var makeButton = function (id, title, XShift, textOp) {
                var button = document.createElement("li");
                button.className = "wmd-button";
                button.style.left = xPosition + "px";
                xPosition += 25;
                var buttonImage = document.createElement("span");
                button.id = id + postfix;
                button.appendChild(buttonImage);
                button.title = title;
                button.XShift = XShift;
                if (textOp)
                    button.textOp = textOp;
                setupButton(button, true);
                buttonRow.appendChild(button);
                return button;
            };

            buttons.bold = makeButton("wmd-bold-button", getString("bold"), "0px", bindCommand("doBold"));
            buttons.italic = makeButton("wmd-italic-button", getString("italic"), "-20px", bindCommand("doItalic"));
            // makeSpacer(1);
            buttons.link = makeButton("wmd-link-button", getString("link"), "-40px", bindCommand(function (chunk, postProcessing) {
                return this.doLinkOrImage(chunk, postProcessing, false);
            }));
            buttons.quote = makeButton("wmd-quote-button", getString("quote"), "-60px", bindCommand("doBlockquote"));
            buttons.code = makeButton("wmd-code-button", getString("code"), "-80px", bindCommand("doCode"));
            buttons.image = makeButton("wmd-image-button", getString("image"), "-100px", bindCommand(function (chunk, postProcessing) {
                return this.doLinkOrImage(chunk, postProcessing, true);
            }));
            // makeSpacer(2);
            buttons.olist = makeButton("wmd-olist-button", getString("olist"), "-120px", bindCommand(function (chunk, postProcessing) {
                this.doList(chunk, postProcessing, true);
            }));
            buttons.ulist = makeButton("wmd-ulist-button", getString("ulist"), "-140px", bindCommand(function (chunk, postProcessing) {
                this.doList(chunk, postProcessing, false);
            }));
            buttons.heading = makeButton("wmd-heading-button", getString("heading"), "-160px", bindCommand("doHeading"));
            buttons.hr = makeButton("wmd-hr-button", getString("hr"), "-180px", bindCommand("doHorizontalRule"));
            // makeSpacer(3);
            buttons.undo = makeButton("wmd-undo-button", getString("undo"), "-200px", null);
            buttons.undo.execute = function (manager) { if (manager) manager.undo(); };

            var redoTitle = /win/.test(nav.platform.toLowerCase()) ?
                getString("redo") :
                getString("redomac"); // mac and other non-Windows platforms

            buttons.redo = makeButton("wmd-redo-button", redoTitle, "-220px", null);
            buttons.redo.execute = function (manager) { if (manager) manager.redo(); };

            if (helpOptions) {
                var helpButton = document.createElement("li");
                var helpButtonImage = document.createElement("span");
                helpButton.appendChild(helpButtonImage);
                helpButton.className = "wmd-button wmd-help-button";
                helpButton.id = "wmd-help-button" + postfix;
                helpButton.XShift = "-240px";
                helpButton.isHelp = true;
                helpButton.style.right = "0px";
                helpButton.title = getString("help");
                helpButton.onclick = helpOptions.handler;

                setupButton(helpButton, true);
                buttonRow.appendChild(helpButton);
                buttons.help = helpButton;
            }

            setUndoRedoButtonStates();
        }

        function setUndoRedoButtonStates() {
            if (undoManager) {
                setupButton(buttons.undo, undoManager.canUndo());
                setupButton(buttons.redo, undoManager.canRedo());
            }
        };

        this.setUndoRedoButtonStates = setUndoRedoButtonStates;
        this.buttons = buttons;
        this.setButtonState = setupButton;

    }

    function CommandManager(pluginHooks, getString) {
        this.hooks = pluginHooks;
        this.getString = getString;
    }

    var commandProto = CommandManager.prototype;

    // The markdown symbols - 4 spaces = code, > = blockquote, etc.
    commandProto.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";

    // Remove markdown symbols from the chunk selection.
    commandProto.unwrap = function (chunk) {
        var txt = new re("([^\\n])\\n(?!(\\n|" + this.prefixes + "))", "g");
        chunk.selection = chunk.selection.replace(txt, "$1 $2");
    };

    commandProto.wrap = function (chunk, len) {
        this.unwrap(chunk);
        var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm"),
            that = this;

        chunk.selection = chunk.selection.replace(regex, function (line, marked) {
            if (new re("^" + that.prefixes, "").test(line)) {
                return line;
            }
            return marked + "\n";
        });

        chunk.selection = chunk.selection.replace(/\s+$/, "");
    };

    commandProto.doBold = function (chunk, postProcessing) {
        return this.doBorI(chunk, postProcessing, 2, this.getString("boldexample"));
    };

    commandProto.doItalic = function (chunk, postProcessing) {
        return this.doBorI(chunk, postProcessing, 1, this.getString("italicexample"));
    };

    // chunk: The selected region that will be enclosed with */**
    // nStars: 1 for italics, 2 for bold
    // insertText: If you just click the button without highlighting text, this gets inserted
    commandProto.doBorI = function (chunk, postProcessing, nStars, insertText) {

        // Get rid of whitespace and fixup newlines.
        chunk.trimWhitespace();
        chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");

        // Look for stars before and after.  Is the chunk already marked up?
        // note that these regex matches cannot fail
        var starsBefore = /(\**$)/.exec(chunk.before)[0];
        var starsAfter = /(^\**)/.exec(chunk.after)[0];

        var prevStars = Math.min(starsBefore.length, starsAfter.length);

        // Remove stars if we have to since the button acts as a toggle.
        if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
            chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
            chunk.after = chunk.after.replace(re("^[*]{" + nStars + "}", ""), "");
        }
        else if (!chunk.selection && starsAfter) {
            // It's not really clear why this code is necessary.  It just moves
            // some arbitrary stuff around.
            chunk.after = chunk.after.replace(/^([*_]*)/, "");
            chunk.before = chunk.before.replace(/(\s?)$/, "");
            var whitespace = re.$1;
            chunk.before = chunk.before + starsAfter + whitespace;
        }
        else {

            // In most cases, if you don't have any selected text and click the button
            // you'll get a selected, marked up region with the default text inserted.
            if (!chunk.selection && !starsAfter) {
                chunk.selection = insertText;
            }

            // Add the true markup.
            var markup = nStars <= 1 ? "*" : "**"; // shouldn't the test be = ?
            chunk.before = chunk.before + markup;
            chunk.after = markup + chunk.after;
        }

        return;
    };

    commandProto.stripLinkDefs = function (text, defsToAdd) {

        text = text.replace(/^[ ]{0,3}\[(\d+)\]:[ \t]*\n?[ \t]*<?(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|$)/gm,
            function (totalMatch, id, link, newlines, title) {
                defsToAdd[id] = totalMatch.replace(/\s*$/, "");
                if (newlines) {
                    // Strip the title and return that separately.
                    defsToAdd[id] = totalMatch.replace(/["(](.+?)[")]$/, "");
                    return newlines + title;
                }
                return "";
            });

        return text;
    };

    commandProto.addLinkDef = function (chunk, linkDef) {

        var refNumber = 0; // The current reference number
        var defsToAdd = {}; //
        // Start with a clean slate by removing all previous link definitions.
        chunk.before = this.stripLinkDefs(chunk.before, defsToAdd);
        chunk.selection = this.stripLinkDefs(chunk.selection, defsToAdd);
        chunk.after = this.stripLinkDefs(chunk.after, defsToAdd);

        var defs = "";
        var regex = /(\[)((?:\[[^\]]*\]|[^\[\]])*)(\][ ]?(?:\n[ ]*)?\[)(\d+)(\])/g;

        var addDefNumber = function (def) {
            refNumber++;
            def = def.replace(/^[ ]{0,3}\[(\d+)\]:/, "  [" + refNumber + "]:");
            defs += "\n" + def;
        };

        // note that
        // a) the recursive call to getLink cannot go infinite, because by definition
        //    of regex, inner is always a proper substring of wholeMatch, and
        // b) more than one level of nesting is neither supported by the regex
        //    nor making a lot of sense (the only use case for nesting is a linked image)
        var getLink = function (wholeMatch, before, inner, afterInner, id, end) {
            inner = inner.replace(regex, getLink);
            if (defsToAdd[id]) {
                addDefNumber(defsToAdd[id]);
                return before + inner + afterInner + refNumber + end;
            }
            return wholeMatch;
        };

        chunk.before = chunk.before.replace(regex, getLink);

        if (linkDef) {
            addDefNumber(linkDef);
        }
        else {
            chunk.selection = chunk.selection.replace(regex, getLink);
        }

        var refOut = refNumber;

        chunk.after = chunk.after.replace(regex, getLink);

        if (chunk.after) {
            chunk.after = chunk.after.replace(/\n*$/, "");
        }
        if (!chunk.after) {
            chunk.selection = chunk.selection.replace(/\n*$/, "");
        }

        chunk.after += "\n\n" + defs;

        return refOut;
    };

    // takes the line as entered into the add link/as image dialog and makes
    // sure the URL and the optinal title are "nice".
    function properlyEncoded(linkdef) {
        return linkdef.replace(/^\s*(.*?)(?:\s+"(.+)")?\s*$/, function (wholematch, link, title) {
            link = link.replace(/\?.*$/, function (querypart) {
                return querypart.replace(/\+/g, " "); // in the query string, a plus and a space are identical
            });
            link = decodeURIComponent(link); // unencode first, to prevent double encoding
            link = encodeURI(link).replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29');
            link = link.replace(/\?.*$/, function (querypart) {
                return querypart.replace(/\+/g, "%2b"); // since we replaced plus with spaces in the query part, all pluses that now appear where originally encoded
            });
            if (title) {
                title = title.trim ? title.trim() : title.replace(/^\s*/, "").replace(/\s*$/, "");
                title = title.replace(/"/g, "quot;").replace(/\(/g, "&#40;").replace(/\)/g, "&#41;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
            }
            return title ? link + ' "' + title + '"' : link;
        });
    }

    // life 添加
    commandProto.insertLink = function (chunk, postProcessing, link, text, isImage) {
        chunk.trimWhitespace();
        chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
        var background;

        if (chunk.endTag.length > 1 && chunk.startTag.length > 0) {

            chunk.startTag = chunk.startTag.replace(/!?\[/, "");
            chunk.endTag = "";
            this.addLinkDef(chunk, null);
        }
        else {

            // We're moving start and end tag back into the selection, since (as we're in the else block) we're not
            // *removing* a link, but *adding* one, so whatever findTags() found is now back to being part of the
            // link text. linkEnteredCallback takes care of escaping any brackets.
            chunk.selection = chunk.startTag + chunk.selection + chunk.endTag;
            chunk.startTag = chunk.endTag = "";

            if (/\n\n/.test(chunk.selection)) {
                this.addLinkDef(chunk, null);
                return;
            }
            var that = this;
            // The function to be executed when you enter a link and press OK or Cancel.
            // Marks up the link and adds the ref.
            var linkEnteredCallback = function (link) {
                background.parentNode.removeChild(background);

                if (link !== null) {
                    chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);

                    chunk.startTag = isImage ? "![" : "[";
                    //chunk.endTag = "][" + num + "]";
                    chunk.endTag = "](" + properlyEncoded(link) + ")";

                    chunk.selection = text;
                }
                postProcessing();
            };

            background = ui.createBackground();
            linkEnteredCallback(link);
            return true;
        }
    };

    commandProto.doLinkOrImage = function (chunk, postProcessing, isImage) {

        chunk.trimWhitespace();
        //chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
        chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\(.*?\))?/);

        var background;

        if (chunk.endTag.length > 1 && chunk.startTag.length > 0) {

            chunk.startTag = chunk.startTag.replace(/!?\[/, "");
            chunk.endTag = "";
            this.addLinkDef(chunk, null);

        }
        else {

            // We're moving start and end tag back into the selection, since (as we're in the else block) we're not
            // *removing* a link, but *adding* one, so whatever findTags() found is now back to being part of the
            // link text. linkEnteredCallback takes care of escaping any brackets.
            chunk.selection = chunk.startTag + chunk.selection + chunk.endTag;
            chunk.startTag = chunk.endTag = "";

            if (/\n\n/.test(chunk.selection)) {
                this.addLinkDef(chunk, null);
                return;
            }
            var that = this;
            // The function to be executed when you enter a link and press OK or Cancel.
            // Marks up the link and adds the ref.
            var linkEnteredCallback = function (link, text) {
                background.parentNode.removeChild(background);

                if (link !== null) {
                    // (                          $1
                    //     [^\\]                  anything that's not a backslash
                    //     (?:\\\\)*              an even number (this includes zero) of backslashes
                    // )
                    // (?=                        followed by
                    //     [[\]]                  an opening or closing bracket
                    // )
                    //
                    // In other words, a non-escaped bracket. These have to be escaped now to make sure they
                    // don't count as the end of the link or similar.
                    // Note that the actual bracket has to be a lookahead, because (in case of to subsequent brackets),
                    // the bracket in one match may be the "not a backslash" character in the next match, so it
                    // should not be consumed by the first match.
                    // The "prepend a space and finally remove it" steps makes sure there is a "not a backslash" at the
                    // start of the string, so this also works if the selection begins with a bracket. We cannot solve
                    // this by anchoring with ^, because in the case that the selection starts with two brackets, this
                    // would mean a zero-width match at the start. Since zero-width matches advance the string position,
                    // the first bracket could then not act as the "not a backslash" for the second.
                    chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);

                    /*
                    var linkDef = " [999]: " + properlyEncoded(link);

                    var num = that.addLinkDef(chunk, linkDef);
                    */
                    chunk.startTag = isImage ? "![" : "[";
                    // chunk.endTag = "][" + num + "]";
                    chunk.endTag = "](" + properlyEncoded(link) + ")";

                    if (!chunk.selection) {
                        var str = '';
                        if (text) {
                            str = text;
                        } else if (isImage) {
                            str = that.getString("imagedescription");
                        }
                        else {
                            str = that.getString("linkdescription");
                        }

                        chunk.selection = str;
                    }
                }
                postProcessing();
            };


            background = ui.createBackground();

            if (isImage) {
                if (!this.hooks.insertImageDialog(linkEnteredCallback))
                    ui.prompt(this.getString("imagedialog"), imageDefaultText, linkEnteredCallback);
            }
            else {
                if (!this.hooks.insertLinkDialog(linkEnteredCallback))
                	ui.prompt(this.getString("linkdialog"), linkDefaultText, linkEnteredCallback);
            }
            return true;
        }
    };

    // When making a list, hitting shift-enter will put your cursor on the next line
    // at the current indent level.
    commandProto.doAutoindent = function (chunk, postProcessing) {

        var commandMgr = this,
            fakeSelection = false;

        chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
        chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
        chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");

        // There's no selection, end the cursor wasn't at the end of the line:
        // The user wants to split the current list item / code line / blockquote line
        // (for the latter it doesn't really matter) in two. Temporarily select the
        // (rest of the) line to achieve this.
        if (!chunk.selection && !/^[ \t]*(?:\n|$)/.test(chunk.after)) {
            chunk.after = chunk.after.replace(/^[^\n]*/, function (wholeMatch) {
                chunk.selection = wholeMatch;
                return "";
            });
            fakeSelection = true;
        }

        if (/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)) {
            if (commandMgr.doList) {
                commandMgr.doList(chunk);
            }
        }
        if (/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)) {
            if (commandMgr.doBlockquote) {
                commandMgr.doBlockquote(chunk);
            }
        }
        if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
            if (commandMgr.doCode) {
                commandMgr.doCode(chunk);
            }
        }

        if (fakeSelection) {
            chunk.after = chunk.selection + chunk.after;
            chunk.selection = "";
        }
    };

    commandProto.doBlockquote = function (chunk, postProcessing) {

        chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
            function (totalMatch, newlinesBefore, text, newlinesAfter) {
                chunk.before += newlinesBefore;
                chunk.after = newlinesAfter + chunk.after;
                return text;
            });

        chunk.before = chunk.before.replace(/(>[ \t]*)$/,
            function (totalMatch, blankLine) {
                chunk.selection = blankLine + chunk.selection;
                return "";
            });

        chunk.selection = chunk.selection.replace(/^(\s|>)+$/, "");
        chunk.selection = chunk.selection || this.getString("quoteexample");

        // The original code uses a regular expression to find out how much of the
        // text *directly before* the selection already was a blockquote:

        /*
        if (chunk.before) {
        chunk.before = chunk.before.replace(/\n?$/, "\n");
        }
        chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
        function (totalMatch) {
        chunk.startTag = totalMatch;
        return "";
        });
        */

        // This comes down to:
        // Go backwards as many lines a possible, such that each line
        //  a) starts with ">", or
        //  b) is almost empty, except for whitespace, or
        //  c) is preceeded by an unbroken chain of non-empty lines
        //     leading up to a line that starts with ">" and at least one more character
        // and in addition
        //  d) at least one line fulfills a)
        //
        // Since this is essentially a backwards-moving regex, it's susceptible to
        // catstrophic backtracking and can cause the browser to hang;
        // see e.g. http://meta.stackoverflow.com/questions/9807.
        //
        // Hence we replaced this by a simple state machine that just goes through the
        // lines and checks for a), b), and c).

        var match = "",
            leftOver = "",
            line;
        if (chunk.before) {
            var lines = chunk.before.replace(/\n$/, "").split("\n");
            var inChain = false;
            for (var i = 0; i < lines.length; i++) {
                var good = false;
                line = lines[i];
                inChain = inChain && line.length > 0; // c) any non-empty line continues the chain
                if (/^>/.test(line)) {                // a)
                    good = true;
                    if (!inChain && line.length > 1)  // c) any line that starts with ">" and has at least one more character starts the chain
                        inChain = true;
                } else if (/^[ \t]*$/.test(line)) {   // b)
                    good = true;
                } else {
                    good = inChain;                   // c) the line is not empty and does not start with ">", so it matches if and only if we're in the chain
                }
                if (good) {
                    match += line + "\n";
                } else {
                    leftOver += match + line;
                    match = "\n";
                }
            }
            if (!/(^|\n)>/.test(match)) {             // d)
                leftOver += match;
                match = "";
            }
        }

        chunk.startTag = match;
        chunk.before = leftOver;

        // end of change

        if (chunk.after) {
            chunk.after = chunk.after.replace(/^\n?/, "\n");
        }

        chunk.after = chunk.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,
            function (totalMatch) {
                chunk.endTag = totalMatch;
                return "";
            }
        );

        var replaceBlanksInTags = function (useBracket) {

            var replacement = useBracket ? "> " : "";

            if (chunk.startTag) {
                chunk.startTag = chunk.startTag.replace(/\n((>|\s)*)\n$/,
                    function (totalMatch, markdown) {
                        return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
                    });
            }
            if (chunk.endTag) {
                chunk.endTag = chunk.endTag.replace(/^\n((>|\s)*)\n/,
                    function (totalMatch, markdown) {
                        return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
                    });
            }
        };

        if (/^(?![ ]{0,3}>)/m.test(chunk.selection)) {
            this.wrap(chunk, SETTINGS.lineLength - 2);
            chunk.selection = chunk.selection.replace(/^/gm, "> ");
            replaceBlanksInTags(true);
            chunk.skipLines();
        } else {
            chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
            this.unwrap(chunk);
            replaceBlanksInTags(false);

            if (!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag) {
                chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
            }

            if (!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag) {
                chunk.endTag = chunk.endTag.replace(/^\n{0,2}/, "\n\n");
            }
        }

        chunk.selection = this.hooks.postBlockquoteCreation(chunk.selection);

        if (!/\n/.test(chunk.selection)) {
            chunk.selection = chunk.selection.replace(/^(> *)/,
            function (wholeMatch, blanks) {
                chunk.startTag += blanks;
                return "";
            });
        }
    };

    // 这里, 应该用 ``` ```
    commandProto.doCode = function (chunk, postProcessing) {

        var hasTextBefore = /\S[ ]*$/.test(chunk.before);
        var hasTextAfter = /^[ ]*\S/.test(chunk.after);

        // Use 'four space' markdown if the selection is on its own
        // line or is multiline.
        if ((!hasTextAfter && !hasTextBefore) || /\n/.test(chunk.selection)) {

            chunk.before = chunk.before.replace(/[ ]{4}$/,
                function (totalMatch) {
                    chunk.selection = totalMatch + chunk.selection;
                    return "";
                });

            var nLinesBack = 1;
            var nLinesForward = 1;

            if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
                nLinesBack = 0;
            }
            if (/^\n(\t|[ ]{4,})/.test(chunk.after)) {
                nLinesForward = 0;
            }

            chunk.skipLines(nLinesBack, nLinesForward);

            if (!chunk.selection) {
                chunk.startTag = "    ";
                chunk.selection = this.getString("codeexample");
            }
            else {
                if (/^[ ]{0,3}\S/m.test(chunk.selection)) {
                    if (/\n/.test(chunk.selection))
                        chunk.selection = chunk.selection.replace(/^/gm, "    ");
                    else // if it's not multiline, do not select the four added spaces; this is more consistent with the doList behavior
                        chunk.before += "    ";
                }
                else {
                    chunk.selection = chunk.selection.replace(/^(?:[ ]{4}|[ ]{0,3}\t)/gm, "");
                }
            }
        }
        else {
            // Use backticks (`) to delimit the code block.

            chunk.trimWhitespace();
            chunk.findTags(/`/, /`/);

            if (!chunk.startTag && !chunk.endTag) {
                chunk.startTag = chunk.endTag = "`";
                if (!chunk.selection) {
                    chunk.selection = this.getString("codeexample");
                }
            }
            else if (chunk.endTag && !chunk.startTag) {
                chunk.before += chunk.endTag;
                chunk.endTag = "";
            }
            else {
                chunk.startTag = chunk.endTag = "";
            }
        }
    };

    commandProto.doList = function (chunk, postProcessing, isNumberedList) {

        // These are identical except at the very beginning and end.
        // Should probably use the regex extension function to make this clearer.
        var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
        var nextItemsRegex = /^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;

        // The default bullet is a dash but others are possible.
        // This has nothing to do with the particular HTML bullet,
        // it's just a markdown bullet.
        var bullet = "-";

        // The number in a numbered list.
        var num = 1;

        // Get the item prefix - e.g. " 1. " for a numbered list, " - " for a bulleted list.
        var getItemPrefix = function () {
            var prefix;
            if (isNumberedList) {
                prefix = " " + num + ". ";
                num++;
            }
            else {
                prefix = " " + bullet + " ";
            }
            return prefix;
        };

        // Fixes the prefixes of the other list items.
        var getPrefixedItem = function (itemText) {

            // The numbering flag is unset when called by autoindent.
            if (isNumberedList === undefined) {
                isNumberedList = /^\s*\d/.test(itemText);
            }

            // Renumber/bullet the list element.
            itemText = itemText.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,
                function (_) {
                    return getItemPrefix();
                });

            return itemText;
        };

        chunk.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/, null);

        if (chunk.before && !/\n$/.test(chunk.before) && !/^\n/.test(chunk.startTag)) {
            chunk.before += chunk.startTag;
            chunk.startTag = "";
        }

        if (chunk.startTag) {

            var hasDigits = /\d+[.]/.test(chunk.startTag);
            chunk.startTag = "";
            chunk.selection = chunk.selection.replace(/\n[ ]{4}/g, "\n");
            this.unwrap(chunk);
            chunk.skipLines();

            if (hasDigits) {
                // Have to renumber the bullet points if this is a numbered list.
                chunk.after = chunk.after.replace(nextItemsRegex, getPrefixedItem);
            }
            if (isNumberedList == hasDigits) {
                return;
            }
        }

        var nLinesUp = 1;

        chunk.before = chunk.before.replace(previousItemsRegex,
            function (itemText) {
                if (/^\s*([*+-])/.test(itemText)) {
                    bullet = re.$1;
                }
                nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
                return getPrefixedItem(itemText);
            });

        if (!chunk.selection) {
            chunk.selection = this.getString("litem");
        }

        var prefix = getItemPrefix();

        var nLinesDown = 1;

        chunk.after = chunk.after.replace(nextItemsRegex,
            function (itemText) {
                nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
                return getPrefixedItem(itemText);
            });

        chunk.trimWhitespace(true);
        chunk.skipLines(nLinesUp, nLinesDown, true);
        chunk.startTag = prefix;
        var spaces = prefix.replace(/./g, " ");
        this.wrap(chunk, SETTINGS.lineLength - spaces.length);
        chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);

    };

    // 要改成 ## ### #### 
    // life 2015/7/12
    commandProto.doHeading = function (chunk, postProcessing) {
        // Remove leading/trailing whitespace and reduce internal spaces to single spaces.
        chunk.selection = chunk.selection.replace(/\s+/g, " ");
        chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/g, "");

        // If we clicked the button with no selected text, we just
        // make a level 2 hash header around some default text.
        if (!chunk.selection) {
            // 需要skip的时候 life
            if(chunk.before && (chunk.before[chunk.before.length - 1] != "\n")) {
                chunk.skipLines(1, 1);
            }
            chunk.startTag = "# ";
            chunk.selection = this.getString("headingexample");
            chunk.endTag = ""; // ##
            return;
        }

        chunk.findTags(/#+[ ]*/, /[ ]*#+/);
        // console.log(chunk);

        if(chunk.before && (chunk.before[chunk.before.length - 1] != "\n")) {
            chunk.skipLines(1, 1);
        }

        var beforeHLevel = 0;
        var startTag = chunk.startTag;
        if (/^#+[ ]*$/.test(startTag)) {
            startTag = startTag.replace(/ /g, '');
            beforeHLevel = startTag.length;
        }

        // [0, 4]
        var headerLevelToCreate = 0;
        if(beforeHLevel >= 0 && beforeHLevel <= 3) {
            headerLevelToCreate = beforeHLevel + 1;
        }
        if(beforeHLevel >= 4) {
            headerLevelToCreate = 0;
            chunk.startTag = '';
        }

        if (headerLevelToCreate > 0) {
            var header = "";
            while (headerLevelToCreate--) {
                header += "#";
            }
            header += " ";

            chunk.startTag = header;
        }
        return;
    };

    commandProto.doHorizontalRule = function (chunk, postProcessing) {
        chunk.startTag = "----------\n";
        chunk.selection = "";
        chunk.skipLines(1, 1, true);
    }

})();

define("pagedown-light", function(){});

/**
 * 已知BUG:
 * 从light切换到normal, 快捷键没用了
 *
 */

/*globals Markdown, requirejs */
define('core',[
    "underscore",
    "crel",
    // "ace",
    "constants",
    "utils",
    // "settings",
    "eventMgr",
    "shortcutMgr",
    'pagedown-ace',
    'pagedown-light',
    // 'libs/ace_mode',
    // 'ace/requirejs/text!ace/css/editor.css',
    // 'ace/requirejs/text!ace/theme/textmate.css',
    // 'ace/ext/spellcheck',
    // 'ace/ext/searchbox'
], function(_, crel, 
    // ace, 
    constants, utils, eventMgr, shortcutMgr) {

    var core = {};

    window['MD'] = {'eventMgr': eventMgr};

    var insertLinkO = $('<div class="modal fade modal-insert-link"><div class="modal-dialog"><div class="modal-content">'
            + '<div class="modal-header"><button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>'
            + '<h4 class="modal-title">' + getMsg('Hyperlink') + '</h4></div>'
            + '<div class="modal-body"><p>' + getMsg('Please provide the link URL and an optional title') + ':</p>'
            + '<div class="input-group"><span class="input-group-addon"><i class="fa fa-link"></i></span><input id="input-insert-link" type="text" class="col-sm-5 form-control" placeholder="http://example.com  ' + getMsg('optional title') + '"></div></div><div class="modal-footer"><a href="#" class="btn btn-default" data-dismiss="modal">' + getMsg('Cancel') + '</a> <a href="#" class="btn btn-primary action-insert-link" data-dismiss="modal">' + getMsg('OK') + '</a></div></div></div></div>');

    var actionInsertLinkO = insertLinkO.find('.action-insert-link');

    // Create ACE editor
    var aceEditor;
    function createAceEditor() {
        aceEditor = ace.edit("wmd-input");
        MD.aceEditor = aceEditor;
        // aceEditor.setOption("spellcheck", true);

        // vim
        // aceEditor.setKeyboardHandler("ace/keyboard/vim");

        aceEditor.renderer.setShowGutter(false);
        aceEditor.renderer.setPrintMarginColumn(false);
        aceEditor.renderer.setPadding(constants.EDITOR_DEFAULT_PADDING);
        aceEditor.session.setUseWrapMode(true);
        aceEditor.session.setNewLineMode("unix");
        // aceEditor.session.setMode("libs/ace_mode");
        aceEditor.session.setMode("ace/mode/ace_mode");

        aceEditor.session.$selectLongWords = true;

        // Make bold titles...
        (function(self) {
            function checkLine(currentLine) {
                var line = self.lines[currentLine];
                if(line.length !== 0) {
                    if(line[0].type.indexOf("markup.heading.multi") === 0) {
                        _.each(self.lines[currentLine - 1], function(previousLineObject) {
                            previousLineObject.type = "markup.heading.prev.multi";
                        });
                    }
                }
            }
            function customWorker() {
                // Duplicate from background_tokenizer.js
                if(!self.running) {
                    return;
                }

                var workerStart = new Date();
                var currentLine = self.currentLine;
                var endLine = -1;
                var doc = self.doc;

                while (self.lines[currentLine]) {
                    currentLine++;
                }

                var startLine = currentLine;

                var len = doc.getLength();
                var processedLines = 0;
                self.running = false;
                while (currentLine < len) {
                    self.$tokenizeRow(currentLine);
                    endLine = currentLine;
                    do {
                        checkLine(currentLine); // benweet
                        currentLine++;
                    } while (self.lines[currentLine]);

                    // only check every 5 lines
                    processedLines++;
                    if((processedLines % 5 === 0) && (new Date() - workerStart) > 20) {
                        self.running = setTimeout(customWorker, 20); // benweet
                        self.currentLine = currentLine;
                        return;
                    }
                }
                self.currentLine = currentLine;

                if(startLine <= endLine) {
                    self.fireUpdateEvent(startLine, endLine);
                }
            }
            self.$worker = function() {
                self.lines.splice(0, self.lines.length);
                self.states.splice(0, self.states.length);
                self.currentLine = 0;
                customWorker();
            };

        })(aceEditor.session.bgTokenizer);

        shortcutMgr.configureAce(aceEditor);
        eventMgr.onAceCreated(aceEditor);
    }

    // Create the layout
    var $editorButtonsElt;

    var $navbarElt;
    var $leftBtnElts;
    var $rightBtnElts;
    var $leftBtnDropdown;
    var $rightBtnDropdown;

    // Create the PageDown editor
    var editor;
    var $editorElt;
    var fileDesc;
    var documentContent;
    // var UndoManager = require("ace/undomanager").UndoManager;
    var previewWrapper;

    var converter;

    var lightEditor;

    var $mdKeyboardMode;

    core._resetToolBar = function () {
        /*
        <ul class="nav left-buttons">
                <li class="wmd-button-group1 btn-group"></li>
            </ul>
            <ul class="nav left-buttons">
                <li class="wmd-button-group2 btn-group"></li>
            </ul>
            <ul class="nav left-buttons">
                <li class="wmd-button-group3 btn-group"></li>
            </ul>
            <ul class="nav left-buttons">
                <li class="wmd-button-group4 btn-group"></li>
            </ul>
             <ul class="nav left-buttons">
                <li class="wmd-button-group6 btn-group">
                  <li class="wmd-button btn btn-success" id="wmd-help-button" title="Markdown syntax" style="left: 0px; display: none;"><span style="display: none; background-position: 0px 0px;"></span><i class="fa fa-question-circle"></i></li>
                </li>
            </ul>
         */
        $('#wmd-button-row').remove();
        $('#wmd-button-bar .wmd-button-bar-inner').html('<ul class="nav left-buttons"><li class="wmd-button-group1 btn-group"></li></ul><ul class="nav left-buttons"><li class="wmd-button-group2 btn-group"></li></ul><ul class="nav left-buttons"><li class="wmd-button-group3 btn-group"></li></ul><ul class="nav left-buttons"><li class="wmd-button-group4 btn-group"></li></ul><ul class="nav left-buttons"><li class="wmd-button-group6 btn-group"></li><li class="wmd-button btn btn-success" id="wmd-help-button" title="' + getMsg('Markdown syntax') +'" style="left:0;display:none"><span style="display:none;background-position:0 0"></span><i class="fa fa-question-circle"></i></li></ul>');
    };

    core._setEditorHook = function () {
        // Custom insert link dialog
        editor.hooks.set("insertLinkDialog", function(callback) {
            core.insertLinkCallback = callback;
            utils.resetModalInputs();
            insertLinkO.modal();
            return true;
        });
        // Custom insert image dialog
        editor.hooks.set("insertImageDialog", function(callback) {
            core.insertLinkCallback = callback;
            if(core.catchModal) {
                return true;
            }
            utils.resetModalInputs();
            var ifr = $("#leauiIfrForMD");
            if(!ifr.attr('src')) {
                ifr.attr('src', '/album/index?md=1');
            }
            $(".modal-insert-image").modal();
            return true;
        });

        editor.hooks.chain("onPreviewRefresh", eventMgr.onAsyncPreview);
    };

    // 行
    core._moveCursorTo = function (row, column) {
        if (!window.lightMode) {
            aceEditor.moveCursorTo(row, column);
            return;
        }

        // 得到offset
        var offset = core._getTextareaCursorOffset(row, column);

        $('#wmd-input').get(0).setSelectionRange(offset, offset);
        $('#wmd-input').focus();
    };

    // 得到文本编辑器的位置
    // 返回 {row: 0, column: 0}
    core._getTextareaCusorPosition = function () {
        var offset = $('#wmd-input').get(0).selectionStart;
        if (offset == 0) {
            return {row: 0, column: 0};
        }
        var content = MD.getContent() || '';
        var contentArr = content.split('\n');
        var to = 0;
        var row = 0;
        var column = 0;
        for (var row = 0; row < contentArr.length; ++row) {
            var line = contentArr[row];
            
            if (offset <= line.length) {
                column = offset;
                break;
            }
            else {
                offset -= line.length;
            }

            // 下一行\n
            offset--;
        }
        return {row: row, column: column};
    };

    // 通过row, column 得到offset
    core._getTextareaCursorOffset = function (row, column) {
        var offset = 0;
         // 得到offset
        var content = MD.getContent();
        var contentArr = content.split('\n');
        var offset = 0;
        for (var i = 0; i < contentArr.length && i < row; ++i) {
            offset += contentArr[i].length + 1;  // \n 算1个
        }
        offset += column;
        return offset + 1;
    }

    // 切换到轻量编辑器
    core.initLightEditor = function () {
        if (window.lightMode) {
            return;
        }
        var scrollTop = aceEditor.renderer.getScrollTop();
        var pos = aceEditor.getCursorPosition();
        var content = MD.getContent();

        core._resetToolBar();
        aceEditor && aceEditor.destroy();

        // In light mode, we replace ACE with a textarea
        $('#wmd-input').replaceWith(function() {
            return $('<textarea id="wmd-input" class="ace_editor ace-tm wmd-textarea">').addClass(this.className).addClass('form-control');
        });

        core._pre();

        // unbind all event
        // $editorElt.off();

        editor = new Markdown.EditorLight(converter);

        core._setEditorHook();

        editor.run(previewWrapper);

        core._setToolBars();

        $editorElt.val(content);

        window.lightMode = true;
        MD.clearUndo();
        eventMgr.onToggleMode(editor);
        core._moveCursorTo(pos.row, pos.column);
        $editorElt.focus();
        $('#wmd-input').scrollTop(scrollTop);

        // 设置API
        // MD.insertLink = editor.insertLink;
    };

    // 切换到Ace编辑器
    core.initAceEditor = function () {
        if (!window.lightMode) {
            return;
        }
        var scrollTop = $('#wmd-input').scrollTop(); // : 
        var pos = core._getTextareaCusorPosition();
        // console.log(pos);
        var content = MD.getContent();

        core._resetToolBar();
        aceEditor && aceEditor.destroy();

        $('#wmd-input').replaceWith(function () {
            return '<pre id="wmd-input" class="form-control"><div id="wmd-input-sub" class="editor-content mousetrap" contenteditable=true></div><div class="editor-margin"></div></pre>';
        });

        core._pre();

        // ACE editor
        createAceEditor();
        // Editor's element
        $editorElt.find('.ace_content').css({
            "background-size": "64px " + Math.round(constants.fontSize * (20 / 12)) + "px",
        });

        // unbind all event
        // $editorElt.off();

        editor = new Markdown.Editor(converter, undefined, {
            keyStrokes: shortcutMgr.getPagedownKeyStrokes()
        });

        core._setEditorHook();
        editor.run(aceEditor, previewWrapper);

        core._setToolBars();

        aceEditor.setValue(content, -1);
        window.lightMode = false;
        MD.clearUndo();

        eventMgr.onToggleMode(editor);
        core._moveCursorTo(pos.row, pos.column);
        aceEditor.focus();
        aceEditor.session.setScrollTop(scrollTop);

        // 设置API
        // MD.insertLink = editor.insertLink;
    };

    core._initMarkdownConvert = function () {
        // Create the converter and the editor
        converter = new Markdown.Converter();
        var options = {
            _DoItalicsAndBold: function(text) {
                // Restore original markdown implementation
                text = text.replace(/(\*\*|__)(?=\S)(.+?[*_]*)(?=\S)\1/g,
                "<strong>$2</strong>");
                text = text.replace(/(\*|_)(?=\S)(.+?)(?=\S)\1/g,
                "<em>$2</em>");
                return text;
            }
        };
        converter.setOptions(options);

        return converter;
    }

    // 初始化
    core.initEditor = function(fileDescParam) {
        if(fileDesc !== undefined) {
            eventMgr.onFileClosed(fileDesc);
        }
        if (!fileDescParam) {
            fileDescParam = {content: ""};
        }
        fileDesc = fileDescParam;
        documentContent = undefined;
        var initDocumentContent = fileDesc.content;

        if(aceEditor !== undefined) {
            aceEditor.setValue(initDocumentContent, -1);
            // 重新设置undo manage
            // aceEditor.getSession().setUndoManager(new ace.UndoManager());
        }
        else {
            $editorElt.val(initDocumentContent);
        }

        // If the editor is already created
        if(editor !== undefined) {
            aceEditor && fileDesc.editorSelectRange && aceEditor.selection.setSelectionRange(fileDesc.editorSelectRange);
            // aceEditor ? aceEditor.focus() : $editorElt.focus();
            editor.refreshPreview();

            MD.$editorElt = $editorElt;

            // 滚动到最顶部, 不然ace editor有问题
            if(window.lightMode) {
                $editorElt.scrollTop(0);
            }
            else {
                _.defer(function() {
                    aceEditor.renderer.scrollToY(0);
                });
            }
            return;
        }

        var $previewContainerElt = $(".preview-container");

        /*
        if(window.lightMode) {
            // Store editor scrollTop on scroll event
            $editorElt.scroll(function() {
                if(documentContent !== undefined) {
                    fileDesc.editorScrollTop = $(this).scrollTop();
                }
            });
            // Store editor selection on change
            $editorElt.bind("keyup mouseup", function() {
                if(documentContent !== undefined) {
                    fileDesc.editorStart = this.selectionStart;
                    fileDesc.editorEnd = this.selectionEnd;
                }
            });
        }
        else {
            // Store editor scrollTop on scroll event
            var saveScroll = _.debounce(function() {
                if(documentContent !== undefined) {
                    fileDesc.editorScrollTop = aceEditor.renderer.getScrollTop();
                }
            }, 100);
            aceEditor.session.on('changeScrollTop', saveScroll);
            // Store editor selection on change
            var saveSelection = _.debounce(function() {
                if(documentContent !== undefined) {
                    fileDesc.editorSelectRange = aceEditor.getSelectionRange();
                }
            }, 100);
            aceEditor.session.selection.on('changeSelection', saveSelection);
            aceEditor.session.selection.on('changeCursor', saveSelection);
        }
        // Store preview scrollTop on scroll event
        $previewContainerElt.scroll(function() {
            if(documentContent !== undefined) {
                fileDesc.previewScrollTop = $previewContainerElt.scrollTop();
            }
        });
        */

        if(window.lightMode) {
            editor = new Markdown.EditorLight(converter);
        }
        else {
            editor = new Markdown.Editor(converter, undefined, {
                keyStrokes: shortcutMgr.getPagedownKeyStrokes()
            });
        }

        // editor['eventMgr'] = eventMgr;

        core._setEditorHook();

        function checkDocumentChanges() {
            var newDocumentContent = $editorElt.val();
            if(aceEditor !== undefined) {
                newDocumentContent = aceEditor.getValue();
            }
            if(documentContent !== undefined && documentContent != newDocumentContent) {
                fileDesc.content = newDocumentContent;
                eventMgr.onContentChanged(fileDesc);
            }
            documentContent = newDocumentContent;
        }
        previewWrapper = function(makePreview) {
            var debouncedMakePreview = _.debounce(makePreview, 500);
            return function() {
                if(documentContent === undefined) {
                    makePreview();

                    eventMgr.onFileOpen(fileDesc);
                    $previewContainerElt.scrollTop(fileDesc.previewScrollTop);
                    if(window.lightMode) {
                        $editorElt.scrollTop(fileDesc.editorScrollTop);
                    }
                    else {
                        _.defer(function() {
                            aceEditor.renderer.scrollToY(fileDesc.editorScrollTop);
                        });
                    }
                }
                else {
                    debouncedMakePreview();
                }
                checkDocumentChanges();
            };
        };

        eventMgr.onPagedownConfigure(editor);
        
        if(window.lightMode) {
            editor.run(previewWrapper);
            editor.undoManager.reinit(initDocumentContent, fileDesc.editorStart, fileDesc.editorEnd, fileDesc.editorScrollTop);
        }
        else {
            editor.run(aceEditor, previewWrapper);
            fileDesc.editorSelectRange && aceEditor.selection.setSelectionRange(fileDesc.editorSelectRange);
        }
    };

    // 工具栏按钮
    core._setToolBars = function () {
        // Hide default buttons
        $(".wmd-button-row li").addClass("btn btn-success").css("left", 0).find("span").hide();

        // Add customized buttons
        var $btnGroupElt = $('.wmd-button-group1');

        $("#wmd-bold-button").append($('<i class="fa fa-bold">')).appendTo($btnGroupElt);
        $("#wmd-italic-button").append($('<i class="fa fa-italic">')).appendTo($btnGroupElt);
        $btnGroupElt = $('.wmd-button-group2');
        $("#wmd-link-button").append($('<i class="fa fa-link">')).appendTo($btnGroupElt);
        $("#wmd-quote-button").append($('<i class="fa fa-quote-left">')).appendTo($btnGroupElt);
        $("#wmd-code-button").append($('<i class="fa fa-code">')).appendTo($btnGroupElt);
        $("#wmd-image-button").append($('<i class="fa fa-picture-o">')).appendTo($btnGroupElt);
        $btnGroupElt = $('.wmd-button-group3');
        $("#wmd-olist-button").append($('<i class="fa fa-list-ol">')).appendTo($btnGroupElt);
        $("#wmd-ulist-button").append($('<i class="fa fa-list-ul">')).appendTo($btnGroupElt);
        $("#wmd-heading-button").append($('<i class="fa fa-header">')).appendTo($btnGroupElt);
        $("#wmd-hr-button").append($('<i class="fa fa-ellipsis-h">')).appendTo($btnGroupElt);
        // $btnGroupElt = $('.wmd-button-group4');
        $("#wmd-undo-button").append($('<i class="fa fa-undo">')).appendTo($btnGroupElt);
        $("#wmd-redo-button").append($('<i class="fa fa-repeat">')).appendTo($btnGroupElt);

        core._initModeToolbar();
    };

    core.setMDApi = function () {
        //==============
        // MD API start

        // 设置API
        // MD.insertLink = editor.insertLink;

        MD.focus = function () {
            !window.lightMode ? aceEditor.focus() : $('#wmd-input').focus();
        };
        MD.setContent = function (content) {
            var desc = {
                content: content
            }
            // Notify extensions
            // eventMgr.onFileSelected(desc);

            // Refresh the editor (even if it's the same file)
            core.initEditor(desc);
        };
        MD.getContent = function () {
            if(!window.lightMode) {
                return aceEditor.getValue();
            }
            return $('#wmd-input').val();
            // return $editorElt.val(); // 有延迟?
        };
        

        /*
        if (!window.lightMode) {
            MD.aceEditor = aceEditor;
        }
        */

        // 重新refresh preview
        MD.onResize = function () {
            eventMgr.onLayoutResize();
        };

        // aceEditor resize
        MD.resize = function () {
            if (!window.lightMode) {
                aceEditor.resize();
            }
        };

        MD.clearUndo = function () {
            if(window.lightMode) {
                editor.undoManager.reinit();
            }
            else {
                aceEditor.getSession().setUndoManager(new ace.UndoManager());
            }
            // 重新设置undo, redo button是否可用状态
            editor.uiManager.setUndoRedoButtonStates();
        };

        MD.toggleToAce = function () {
            core.initAceEditor();
        };

        // 切换成light模式
        MD.toggleToLight = function () {
            core.initLightEditor();
        };

        // 以下一行是为了i18n能分析到
        // getMsg('Light') getMsg('Normal')
        MD.setModeName = function(mode) {
            if (mode === 'textarea') {
                mode = 'Normal';
            }
            var msg = getMsg(mode);
            $mdKeyboardMode.html(msg);
        };

        MD.changeAceKeyboardMode = function(mode, modeName) {
            // 保存之
            localS.set(localSModeKey, mode);

            // 之前是lightMode
            if (window.lightMode) {
                // 要切换成ace
                if (mode != 'light') {
                    core.initAceEditor();
                    if (!MD.defaultKeyboardMode) {
                        MD.defaultKeyboardMode = aceEditor.getKeyboardHandler();
                    }
                }
                // 还是ligth, 则返回
                else {
                    return;
                }
            }
            // 当前是ace
            else {
                // 如果mode是light, 则切换之, 否则
                if (mode == 'light') {
                    core.initLightEditor();
                    return;
                }
            }

            // ace切换成其它模式

            if (mode != 'vim' && mode != 'emacs') {
                aceEditor.setKeyboardHandler(MD.defaultKeyboardMode);
                // shortcutMgr.configureAce(aceEditor);
            }
            else {
                aceEditor.setKeyboardHandler("ace/keyboard/" + mode);
            }

            // if (mode != 'light') {
            //     aceEditor.focus();
            // }
        };

        // MD API end
        //==============
    };

    core._initModeToolbar = function () {
        // 可以切换
        if (!window.lightModeForce) {
            $('.wmd-button-group4').html(['<div class="btn-group">',
                    '<button type="button" class="wmd-button btn btn-success dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" title="' + getMsg('Edit mode') + '">',
                      '<i class="fa fa-gear"></i> <i id="md-keyboard-mode"></i>',
                    '</button>',
                    '<ul class="dropdown-menu wmd-mode">',
                      '<li><a href="#" data-mode="Normal"><i class="fa fa-check"></i> ' + getMsg('Normal mode') + '</a></li>',
                      '<li><a href="#" data-mode="Vim"><i class="fa"></i> ' + getMsg('Vim mode') + '</a></li>',
                      '<li><a href="#" data-mode="Emacs"><i class="fa"></i> ' + getMsg('Emacs mode') + '</a></li>',
                      '<li role="separator" class="divider"></li>',
                      '<li><a href="#" data-mode="Light"><i class="fa"></i> ' + getMsg('Light editor') + '</a></li>',
                    '</ul>',
                  '</div>'].join(''));

            $("#wmd-help-button").show();
            $mdKeyboardMode = $('#md-keyboard-mode');
            
            // 编辑模式选择
            $('.wmd-mode a').click(function () {
                var $this = $(this);
                var mode = $this.data('mode');
                MD.changeAceKeyboardMode(mode.toLowerCase(), mode);
                MD.setModeName(mode);

                // 切换后可能会重绘html, 所以这里重新获取
                $('.wmd-mode').find('i').removeClass('fa-check');
                $('.wmd-mode a[data-mode="' + mode + '"]').find('i').addClass('fa-check');
            });

            if (!window.LEA 
                || (window.LEA 
                    && window.LEA.canSetMDModeFromStorage 
                    && window.LEA.canSetMDModeFromStorage())) {
                var aceMode = localS.get(localSModeKey);
                if (!aceMode) {
                    return;
                }
                var aceModeUpper = aceMode[0].toUpperCase() + aceMode.substr(1);
                $('.wmd-mode i').removeClass('fa-check');
                $('.wmd-mode a[data-mode="' + aceModeUpper + '"] i').addClass('fa-check');

                MD.setModeName(aceModeUpper);
            }
        }
    };

    core._pre = function () {
        $editorElt = $("#wmd-input, .textarea-helper").css({
            // Apply editor font
            "font-family": constants.fontFamily,
            "font-size": constants.fontSize + "px",
            "line-height": Math.round(constants.fontSize * (20 / 12)) + "px"
        });
    };

    // Initialize multiple things and then fire eventMgr.onReady
    var isDocumentPanelShown = false;
    var isMenuPanelShown = false;
    core.onReady = function() {
        $navbarElt = $('.navbar');
        $leftBtnElts = $navbarElt.find('.left-buttons');
        $rightBtnElts = $navbarElt.find('.right-buttons');
        $leftBtnDropdown = $navbarElt.find('.left-buttons-dropdown');
        $rightBtnDropdown = $navbarElt.find('.right-buttons-dropdown');

        // Editor
        if(window.lightMode) {
            // In light mode, we replace ACE with a textarea
            $('#wmd-input').replaceWith(function() {
                return $('<textarea id="wmd-input" class="ace_editor ace-tm wmd-textarea">').addClass(this.className).addClass('form-control');
            });
        }

        core._pre();

        if(!window.lightMode) {
            // ACE editor
            createAceEditor();

            // Editor's element
            $editorElt.find('.ace_content').css({
                "background-size": "64px " + Math.round(constants.fontSize * (20 / 12)) + "px",
            });
        }

        eventMgr.onReady();
        core._initMarkdownConvert();
        core.initEditor();
        core.setMDApi();
        core._setToolBars();

        // 默认Ace编辑模式
        if (!window.lightMode) {
            MD.defaultKeyboardMode = aceEditor.getKeyboardHandler();
        }
        // 初始时
        // 是否可以从storage中设置md mode
        if (!window.LEA 
            || (window.LEA 
                && window.LEA.canSetMDModeFromStorage 
                && window.LEA.canSetMDModeFromStorage())) {
            var aceMode = localS.get(localSModeKey);
            if (!window.lightMode && aceMode) {
                var aceModeUpper = aceMode[0].toUpperCase() + aceMode.substr(1);
                MD.changeAceKeyboardMode(aceMode, aceModeUpper);
            }
        }
    };

    // Other initialization that are not prioritary
    eventMgr.addListener("onReady", function() {

        $(document.body).on('shown.bs.modal', '.modal', function() {
            var $elt = $(this);
            setTimeout(function() {
                // When modal opens focus on the first button
                $elt.find('.btn:first').focus();
                // Or on the first link if any
                $elt.find('button:first').focus();
                // Or on the first input if any
                $elt.find("input:enabled:visible:first").focus();
            }, 50);
        }).on('hidden.bs.modal', '.modal', function() {
            // Focus on the editor when modal is gone
            // editor.focus();
            // Revert to current theme when settings modal is closed
            // applyTheme(window.theme);
        }).on('keypress', '.modal', function(e) {
            // Handle enter key in modals
            if(e.which == 13 && !$(e.target).is("textarea")) {
                $(this).find(".modal-footer a:last").click();
            }
        });
       
        // Click events on "insert link" and "insert image" dialog buttons
        actionInsertLinkO.click(function(e) {
            var value = utils.getInputTextValue($("#input-insert-link"), e);
            if(value !== undefined) {
                var arr = value.split(' ');
                var text = '';
                var link = arr[0];
                if (arr.length > 1) {
                    arr.shift();
                    text = $.trim(arr.join(' '));
                }
                if (link && link.indexOf('://') < 0) {
                    link = "http://" + link;
                }
                core.insertLinkCallback(link, text);
                core.insertLinkCallback = undefined;
            }
        });
        // 插入图片
        $(".action-insert-image").click(function() {
            // 得到图片链接或图片
            /*
            https://github.com/leanote/leanote/issues/171
            同遇到了网页编辑markdown时不能添加图片的问题。
            可以上传图片，但是按下“插入图片”按钮之后，编辑器中没有加入![...](...)
            我的控制台有这样的错误： TypeError: document.mdImageManager is undefined
            */
            // mdImageManager是iframe的name, mdGetImgSrc是iframe内的全局方法
            // var value = document.mdImageManager.mdGetImgSrc();
            var value = document.getElementById('leauiIfrForMD').contentWindow.mdGetImgSrc();
            if(value) {
                core.insertLinkCallback(value);
                core.insertLinkCallback = undefined;
            }
        });

        // Hide events on "insert link" and "insert image" dialogs
        insertLinkO.on('hidden.bs.modal', function() {
            if(core.insertLinkCallback !== undefined) {
                core.insertLinkCallback(null);
                core.insertLinkCallback = undefined;
            }
        });

        // Avoid dropdown panels to close on click
        $("div.dropdown-menu").click(function(e) {
            e.stopPropagation();
        });

        // 弹框显示markdown语法
        $('#wmd-button-bar').on('click', '#wmd-help-button', function() {
            window.open("http://leanote.leanote.com/post/Leanote-Markdown-Manual");
        });
    });

    return core;
});

// RequireJS configuration
/*global requirejs */
requirejs.config({
    waitSeconds: 0,
    packages: [
    ],
    paths: {
        underscore: 'bower-libs/underscore/underscore',
        crel: 'bower-libs/crel/crel',
        mathjax: 'libs/MathJax/MathJax.js?config=TeX-AMS_HTML',
        requirejs: 'bower-libs/requirejs/require',
        'google-code-prettify': 'bower-libs/google-code-prettify/src/prettify',
        'jquery-waitforimages': 'bower-libs/waitForImages/jquery.waitforimages',
        'pagedown-ace': 'bower-libs/pagedown-ace/Markdown.Editor',
        'pagedown-light': 'libs/Markdown.Editor.light',
        'pagedown-extra': 'bower-libs/pagedown-extra/Markdown.Extra',
        'ace/requirejs/text': 'libs/ace_text',
        'ace/commands/default_commands': 'libs/ace_commands',
        xregexp: 'bower-libs/xregexp/xregexp-all',
       
        // 以下, 异步加载, 不常用
        Diagram: 'libs/uml/sequence-diagram.min',
        'diagram-grammar': 'libs/uml/diagram-grammar.min',
        raphael: 'libs/uml/raphael.min',
        'flow-chart': 'libs/uml/flowchart.amd-1.3.4.min'
    },
    shim: {
        underscore: {
            exports: '_'
        },
        mathjax: [
            'libs/mathjax_init'
        ],
        'pagedown-extra': [
            'pagedown-ace'
        ],
        'pagedown-ace': [
            'bower-libs/pagedown-ace/Markdown.Converter'
        ],
        'pagedown-light': [
            'bower-libs/pagedown-ace/Markdown.Converter'
        ],
        'flow-chart': [
            'raphael'
        ],
        'diagram-grammar': [
            'underscore'
        ],
        Diagram: [
            'raphael',
            'diagram-grammar'
        ]
    }
});

// 本地缓存
var localS = {
    get: function(key) {
        if (localStorage) {
            return localStorage.getItem(key);
        }
        return;
    },
    set: function(key, value) {
        value += '';
        if (localStorage) {
            localStorage.setItem(key, value);
        }
    }
};
var localSModeKey = 'LeaMdAceMode';

// Viewer mode is deduced from the body class
window.viewerMode = false;

// Light mode is for mobile or viewer
window.lightModeForce = window.viewerMode || /_light_/.test(localStorage.mode) || /(\?|&)light($|&)/.test(location.search) || (function(a) {
    if (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino|android|ipad|playbook|silk/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4))) {
        return true;
    }
})(navigator.userAgent || navigator.vendor || window.opera);
// 是否是强制lightMode
if (window.lightModeForce) {
    window.lightMode = true;
}
else {
    var mode = localS.get(localSModeKey);
    if (mode === 'light') {
        window.lightMode = true;
    }
}

// window.lightMode = true;

// Keep the theme in a global variable
window.theme = localStorage.themeV3 || 'default';
var themeModule = "less!themes/default";

require(["core", "eventMgr"
    // , themeModule
    ],
    function(core, eventMgr) {

    $(function() {
        core.onReady();
    });
});

define("main", function(){});