//     Underscore.js 1.3.3
//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
//     Underscore is freely distributable under the MIT license.
//     Portions of Underscore are inspired or borrowed from Prototype,
//     Oliver Steele's Functional, and John Resig's Micro-Templating.
//     For all details and documentation:
//     http://documentcloud.github.com/underscore

var _ = (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 slice            = ArrayProto.slice,
      unshift          = ArrayProto.unshift,
      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) { return new wrapper(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 = '1.3.3';

  // 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 (i in obj && 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[results.length] = iterator.call(context, value, index, list);
    });
    if (obj.length === +obj.length) results.length = obj.length;
    return results;
  };

  // **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('Reduce of empty array with no initial value');
    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 reversed = _.toArray(obj).reverse();
    if (context && !initial) iterator = _.bind(iterator, context);
    return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
  };

  // 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[results.length] = value;
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    each(obj, function(value, index, list) {
      if (!iterator.call(context, value, index, list)) results[results.length] = value;
    });
    return results;
  };

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

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

  // Return the maximum element or (element-based computation).
  _.max = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.max.apply(Math, obj);
    if (!iterator && _.isEmpty(obj)) return -Infinity;
    var result = {computed : -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]) return Math.min.apply(Math, obj);
    if (!iterator && _.isEmpty(obj)) return Infinity;
    var result = {computed : 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 shuffled = [], rand;
    each(obj, function(value, index, list) {
      rand = Math.floor(Math.random() * (index + 1));
      shuffled[index] = shuffled[rand];
      shuffled[rand] = value;
    });
    return shuffled;
  };

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

  // 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, val) {
    var result = {};
    var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
    each(obj, function(value, index) {
      var key = iterator(value, index);
      (result[key] || (result[key] = [])).push(value);
    });
    return result;
  };

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

  // Safely convert anything iterable into a real, live array.
  _.toArray = function(obj) {
    if (!obj)                                     return [];
    if (_.isArray(obj))                           return slice.call(obj);
    if (_.isArguments(obj))                       return slice.call(obj);
    if (obj.toArray && _.isFunction(obj.toArray)) return obj.toArray();
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    return _.isArray(obj) ? 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) {
    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
  };

  // Returns everything but the last entry of the array. Especcialy 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 ((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`.
  // Especially useful on the arguments object. Passing an **index** will return
  // the rest of the values in the array from that index onward. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = function(array, index, guard) {
    return slice.call(array, (index == null) || guard ? 1 : index);
  };

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

  // Return a completely flattened version of an array.
  _.flatten = function(array, shallow) {
    return _.reduce(array, function(memo, value) {
      if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
      memo[memo.length] = value;
      return memo;
    }, []);
  };

  // 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) {
    var initial = iterator ? _.map(array, iterator) : array;
    var results = [];
    // The `isSorted` flag is irrelevant if the array only contains two elements.
    if (array.length < 3) isSorted = true;
    _.reduce(initial, function (memo, value, index) {
      if (isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
        memo.push(value);
        results.push(array[index]);
      }
      return memo;
    }, []);
    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. (Aliased as "intersect" for back-compat.)
  _.intersection = _.intersect = 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 = _.flatten(slice.call(arguments, 1), true);
    return _.filter(array, function(value){ return !_.include(rest, value); });
  };

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

  // 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, l;
    if (isSorted) {
      i = _.sortedIndex(array, item);
      return array[i] === item ? i : -1;
    }
    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
    for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
    return -1;
  };

  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
  _.lastIndexOf = function(array, item) {
    if (array == null) return -1;
    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
    var i = array.length;
    while (i--) if (i in array && 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). Binding with arguments is also known as `curry`.
  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
  // We check for `func.bind` first, to fail fast when `func` is undefined.
  _.bind = function bind(func, context) {
    var bound, args;
    if (func.bind === nativeBind && 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;
      var result = func.apply(self, args.concat(slice.call(arguments)));
      if (Object(result) === result) return result;
      return self;
    };
  };

  // 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) funcs = _.functions(obj);
    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.
  _.throttle = function(func, wait) {
    var context, args, timeout, throttling, more, result;
    var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
    return function() {
      context = this; args = arguments;
      var later = function() {
        timeout = null;
        if (more) func.apply(context, args);
        whenDone();
      };
      if (!timeout) timeout = setTimeout(later, wait);
      if (throttling) {
        more = true;
      } else {
        result = func.apply(context, args);
      }
      whenDone();
      throttling = true;
      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 timeout;
    return function() {
      var context = this, args = arguments;
      var later = function() {
        timeout = null;
        if (!immediate) func.apply(context, args);
      };
      if (immediate && !timeout) func.apply(context, args);
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
    };
  };

  // 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;
      return memo = func.apply(this, arguments);
    };
  };

  // 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].concat(slice.call(arguments, 0));
      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) {
    if (times <= 0) return 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[keys.length] = key;
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    return _.map(obj, _.identity);
  };

  // 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) {
      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 result = {};
    each(_.flatten(slice.call(arguments, 1)), function(key) {
      if (key in obj) result[key] = obj[key];
    });
    return result;
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      for (var prop in source) {
        if (obj[prop] == null) 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.
  function eq(a, b, stack) {
    // 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._chain) a = a._wrapped;
    if (b._chain) b = b._wrapped;
    // Invoke a custom `isEqual` method if one is provided.
    if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
    if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
    // 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 = stack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (stack[length] == a) return true;
    }
    // Add the first object to the stack of traversed objects.
    stack.push(a);
    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--) {
          // Ensure commutative equality for sparse arrays.
          if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
        }
      }
    } else {
      // Objects with different constructors are not equivalent.
      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
      // 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], stack))) 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.
    stack.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);
  };

  // Is a given variable an arguments object?
  _.isArguments = function(obj) {
    return toString.call(obj) == '[object Arguments]';
  };
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return !!(obj && _.has(obj, 'callee'));
    };
  }

  // Is a given value a function?
  _.isFunction = function(obj) {
    return toString.call(obj) == '[object Function]';
  };

  // Is a given value a string?
  _.isString = function(obj) {
    return toString.call(obj) == '[object String]';
  };

  // Is a given value a number?
  _.isNumber = function(obj) {
    return toString.call(obj) == '[object Number]';
  };

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

  // Is the given value `NaN`?
  _.isNaN = function(obj) {
    // `NaN` is the only value for which `===` is not reflexive.
    return 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 a date?
  _.isDate = function(obj) {
    return toString.call(obj) == '[object Date]';
  };

  // Is the given value a regular expression?
  _.isRegExp = function(obj) {
    return toString.call(obj) == '[object RegExp]';
  };

  // 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;
  };

  // Has own property?
  _.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) {
    for (var i = 0; i < n; i++) iterator.call(context, i);
  };

  // Escape a string for HTML interpolation.
  _.escape = function(string) {
    return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
  };

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

  // Add your own custom functions to the Underscore object, ensuring that
  // they're correctly added to the OOP wrapper as well.
  _.mixin = function(obj) {
    each(_.functions(obj), function(name){
      addToWrapper(name, _[name] = obj[name]);
    });
  };

  // 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'
  };

  for (var p in escapes) escapes[escapes[p]] = p;
  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
  var unescaper = /\\(\\|'|r|n|t|u2028|u2029)/g;

  // Within an interpolation, evaluation, or escaping, remove HTML escaping
  // that had been previously added.
  var unescape = function(code) {
    return code.replace(unescaper, function(match, escape) {
      return escapes[escape];
    });
  };

  // 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) {
    settings = _.defaults(settings || {}, _.templateSettings);

    // Compile the template source, taking care to escape characters that
    // cannot be included in a string literal and then unescape them in code
    // blocks.
    var source = "__p+='" + text
      .replace(escaper, function(match) {
        return '\\' + escapes[match];
      })
      .replace(settings.escape || noMatch, function(match, code) {
        return "'+\n_.escape(" + unescape(code) + ")+\n'";
      })
      .replace(settings.interpolate || noMatch, function(match, code) {
        return "'+\n(" + unescape(code) + ")+\n'";
      })
      .replace(settings.evaluate || noMatch, function(match, code) {
        return "';\n" + unescape(code) + "\n;__p+='";
      }) + "';\n";

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

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

    var render = new Function(settings.variable || 'obj', '_', source);
    if (data) return render(data, _);
    var template = function(data) {
      return render.call(this, data, _);
    };

    // Provide the compiled function source as a convenience for build time
    // 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();
  };

  // The OOP Wrapper
  // ---------------

  // 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.
  var wrapper = function(obj) { this._wrapped = obj; };

  // Expose `wrapper.prototype` as `_.prototype`
  _.prototype = wrapper.prototype;

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

  // A method to easily add functions to the OOP wrapper.
  var addToWrapper = function(name, func) {
    wrapper.prototype[name] = function() {
      var args = slice.call(arguments);
      unshift.call(args, this._wrapped);
      return result(func.apply(_, args), this._chain);
    };
  };

  // 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];
    wrapper.prototype[name] = function() {
      var wrapped = this._wrapped;
      method.apply(wrapped, arguments);
      var length = wrapped.length;
      if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0];
      return result(wrapped, this._chain);
    };
  });

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

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

  // Extracts the result from a wrapped and chained object.
  wrapper.prototype.value = function() {
    return this._wrapped;
  };
  return _;
}).call({});
/**
 * Core Emmet object, available in global scope
 */
var emmet = (function(global) {
	var defaultSyntax = 'html';
	var defaultProfile = 'plain';
	
	if (typeof _ == 'undefined') {
		try {
			// avoid collisions with RequireJS loader
			// also, JS obfuscators tends to translate
			// a["name"] to a.name, which also breaks RequireJS
			_ = global[['require'][0]]('underscore'); // node.js
		} catch (e) {}
	}

	if (typeof _ == 'undefined') {
		throw 'Cannot access to Underscore.js lib';
	}

	/** List of registered modules */
	var modules = {
		_ : _
	};
	
	/**
	 * Shared empty constructor function to aid in prototype-chain creation.
	 */
	var ctor = function(){};
	
	/**
	 * Helper function to correctly set up the prototype chain, for subclasses.
	 * Similar to `goog.inherits`, but uses a hash of prototype properties and
	 * class properties to be extended.
	 * Took it from Backbone.
	 * @param {Object} parent
	 * @param {Object} protoProps
	 * @param {Object} staticProps
	 * @returns {Object}
	 */
	function inherits(parent, protoProps, staticProps) {
		var child;

		// The constructor function for the new subclass is either defined by
		// you (the "constructor" property in your `extend` definition), or
		// defaulted by us to simply call the parent's constructor.
		if (protoProps && protoProps.hasOwnProperty('constructor')) {
			child = protoProps.constructor;
		} else {
			child = function() {
				parent.apply(this, arguments);
			};
		}

		// Inherit class (static) properties from parent.
		_.extend(child, parent);

		// Set the prototype chain to inherit from `parent`, without calling
		// `parent`'s constructor function.
		ctor.prototype = parent.prototype;
		child.prototype = new ctor();

		// Add prototype properties (instance properties) to the subclass,
		// if supplied.
		if (protoProps)
			_.extend(child.prototype, protoProps);

		// Add static properties to the constructor function, if supplied.
		if (staticProps)
			_.extend(child, staticProps);

		// Correctly set child's `prototype.constructor`.
		child.prototype.constructor = child;

		// Set a convenience property in case the parent's prototype is needed
		// later.
		child.__super__ = parent.prototype;

		return child;
	}
	
	/**
	 * @type Function Function that loads module definition if it's not defined
	 */
	var moduleLoader = null;
	
	/**
	 * Generic Emmet module loader (actually, it doesn’t load anything, just 
	 * returns module reference). Not using `require` name to avoid conflicts
	 * with Node.js and RequireJS
	 */
	function r(name) {
		if (!(name in modules) && moduleLoader)
			moduleLoader(name);
		
		return modules[name];
	}
	
	return {
		/**
		 * Simple, AMD-like module definition. The module will be added into
		 * <code>emmet</code> object and will be available via
		 * <code>emmet.require(name)</code> or <code>emmet[name]</code>
		 * @param {String} name
		 * @param {Function} factory
		 * @memberOf emmet
		 */
		define: function(name, factory) {
			// do not let redefine existing properties
			if (!(name in modules)) {
				modules[name] = _.isFunction(factory) 
					? this.exec(factory)
					: factory;
			}
		},
		
		/**
		 * Returns reference to Emmet module
		 * @param {String} name Module name
		 */
		require: r,
		
		/**
		 * Helper method that just executes passed function but with all 
		 * important arguments like 'require' and '_'
		 * @param {Function} fn
		 * @param {Object} context Execution context
		 */
		exec: function(fn, context) {
			return fn.call(context || global, _.bind(r, this), _, this);
		},
		
		/**
		 * The self-propagating extend function for classes.
		 * Took it from Backbone 
		 * @param {Object} protoProps
		 * @param {Object} classProps
		 * @returns {Object}
		 */
		extend: function(protoProps, classProps) {
			var child = inherits(this, protoProps, classProps);
			child.extend = this.extend;
			// a hack required to WSH inherit `toString` method
			if (protoProps.hasOwnProperty('toString'))
				child.prototype.toString = protoProps.toString;
			return child;
		},
		
		/**
		 * The essential function that expands Emmet abbreviation
		 * @param {String} abbr Abbreviation to parse
		 * @param {String} syntax Abbreviation's context syntax
		 * @param {String} profile Output profile (or its name)
		 * @param {Object} contextNode Contextual node where abbreviation is
		 * written
		 * @return {String}
		 */
		expandAbbreviation: function(abbr, syntax, profile, contextNode) {
			if (!abbr) return '';
			
			syntax = syntax || defaultSyntax;
//			profile = profile || defaultProfile;

		 	/*
				DW Changes.
				Bug#3851231: On adding a class/id/hex color and hitting tab inside style tag removes class/id.
				Need to bail out if the syntax is selector and the abbreviation being tried for expansion starts
				with . or #
			*/
			if (syntax == "css" &&
			    (abbr[0] == '.' || abbr[0] == '#')) {
				return '';
			}

			var filters = r('filters');
			var parser = r('abbreviationParser');
			
			profile = r('profile').get(profile, syntax);
			r('tabStops').resetTabstopIndex();
			
			var data = filters.extractFromAbbreviation(abbr);
			var outputTree = parser.parse(data[0], {
				syntax: syntax, 
				contextNode: contextNode
			});
			
			var filtersList = filters.composeList(syntax, profile, data[1]);
			filters.apply(outputTree, filtersList, profile);
			return outputTree.toString();
		},
		
		/**
		 * Returns default syntax name used in abbreviation engine
		 * @returns {String}
		 */
		defaultSyntax: function() {
			return defaultSyntax;
		},
		
		/**
		 * Returns default profile name used in abbreviation engine
		 * @returns {String}
		 */
		defaultProfile: function() {
			return defaultProfile;
		},
		
		/**
		 * Log message into console if it exists
		 */
		log: function() {
			if (global.console && global.console.log)
				global.console.log.apply(global.console, arguments);
		},
		
		/**
		 * Setups function that should synchronously load undefined modules
		 * @param {Function} fn
		 */
		setModuleLoader: function(fn) {
			moduleLoader = fn;
		}
	};
})(this);

// export core for Node.JS
if (typeof exports !== 'undefined') {
	if (typeof module !== 'undefined' && module.exports) {
		exports = module.exports = emmet;
	}
	exports.emmet = emmet;
}

// export as Require.js module
if (typeof define !== 'undefined') {
	define(emmet);
}/**
 * Emmet abbreviation parser.
 * Takes string abbreviation and recursively parses it into a tree. The parsed 
 * tree can be transformed into a string representation with 
 * <code>toString()</code> method. Note that string representation is defined
 * by custom processors (called <i>filters</i>), not by abbreviation parser 
 * itself.
 * 
 * This module can be extended with custom pre-/post-processors to shape-up
 * final tree or its representation. Actually, many features of abbreviation 
 * engine are defined in other modules as tree processors
 * 
 * 
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * @memberOf __abbreviationParser
 * @constructor
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('abbreviationParser', function(require, _) {
	var reValidName = /^[\w\-\$\:@\!%]+\+?$/i;
	var reWord = /[\w\-:\$@]/;
	
	var pairs = {
		'[': ']',
		'(': ')',
		'{': '}'
	};
	
	var spliceFn = Array.prototype.splice;
	
	var preprocessors = [];
	var postprocessors = [];
	var outputProcessors = [];
	
	/**
	 * @type AbbreviationNode
	 */
	function AbbreviationNode(parent) {
		/** @type AbbreviationNode */
		this.parent = null;
		this.children = [];
		this._attributes = [];
		
		/** @type String Raw abbreviation for current node */
		this.abbreviation = '';
		this.counter = 1;
		this._name = null;
		this._text = '';
		this.repeatCount = 1;
		this.hasImplicitRepeat = false;
		
		/** Custom data dictionary */
		this._data = {};
		
		// output properties
		this.start = '';
		this.end = '';
		this.content = '';
		this.padding = '';
	}
	
	AbbreviationNode.prototype = {
		/**
		 * Adds passed node as child or creates new child
		 * @param {AbbreviationNode} child
		 * @param {Number} position Index in children array where child should 
		 * be inserted
		 * @return {AbbreviationNode}
		 */
		addChild: function(child, position) {
			child = child || new AbbreviationNode();
			child.parent = this;
			
			if (_.isUndefined(position)) {
				this.children.push(child);
			} else {
				this.children.splice(position, 0, child);
			}
			
			return child;
		},
		
		/**
		 * Creates a deep copy of current node
		 * @returns {AbbreviationNode}
		 */
		clone: function() {
			var node = new AbbreviationNode();
			var attrs = ['abbreviation', 'counter', '_name', '_text', 'repeatCount', 'hasImplicitRepeat', 'start', 'end', 'content', 'padding'];
			_.each(attrs, function(a) {
				node[a] = this[a];
			}, this);
			
			// clone attributes
			node._attributes = _.map(this._attributes, function(attr) {
				return _.clone(attr);
			});
			
			node._data = _.clone(this._data);
			
			// clone children
			node.children = _.map(this.children, function(child) {
				child = child.clone();
				child.parent = node;
				return child;
			});
			
			return node;
		},
		
		/**
		 * Removes current node from parent‘s child list
		 * @returns {AbbreviationNode} Current node itself
		 */
		remove: function() {
			if (this.parent) {
				this.parent.children = _.without(this.parent.children, this);
			}
			
			return this;
		},
		
		/**
		 * Replaces current node in parent‘s children list with passed nodes
		 * @param {AbbreviationNode} node Replacement node or array of nodes
		 */
		replace: function() {
			var parent = this.parent;
			var ix = _.indexOf(parent.children, this);
			var items = _.flatten(arguments);
			spliceFn.apply(parent.children, [ix, 1].concat(items));
			
			// update parent
			_.each(items, function(item) {
				item.parent = parent;
			});
		},
		
		/**
		 * Recursively sets <code>property</code> to <code>value</code> of current
		 * node and its children 
		 * @param {String} name Property to update
		 * @param {Object} value New property value
		 */
		updateProperty: function(name, value) {
			this[name] = value;
			_.each(this.children, function(child) {
				child.updateProperty(name, value);
			});
			
			return this;
		},
		
		/**
		 * Finds first child node that matches truth test for passed 
		 * <code>fn</code> function
		 * @param {Function} fn
		 * @returns {AbbreviationNode}
		 */
		find: function(fn) {
			return this.findAll(fn)[0];
//			if (!_.isFunction(fn)) {
//				var elemName = fn.toLowerCase();
//				fn = function(item) {return item.name().toLowerCase() == elemName;};
//			}
//			
//			var result = null;
//			_.find(this.children, function(child) {
//				if (fn(child)) {
//					return result = child;
//				}
//				
//				return result = child.find(fn);
//			});
//			
//			return result;
		},
		
		/**
		 * Finds all child nodes that matches truth test for passed 
		 * <code>fn</code> function
		 * @param {Function} fn
		 * @returns {Array}
		 */
		findAll: function(fn) {
			if (!_.isFunction(fn)) {
				var elemName = fn.toLowerCase();
				fn = function(item) {return item.name().toLowerCase() == elemName;};
			}
				
			var result = [];
			_.each(this.children, function(child) {
				if (fn(child))
					result.push(child);
				
				result = result.concat(child.findAll(fn));
			});
			
			return _.compact(result);
		},
		
		/**
		 * Sets/gets custom data
		 * @param {String} name
		 * @param {Object} value
		 * @returns {Object}
		 */
		data: function(name, value) {
			if (arguments.length == 2) {
				this._data[name] = value;
				
				if (name == 'resource' && require('elements').is(value, 'snippet')) {
					// setting snippet as matched resource: update `content`
					// property with snippet value
					this.content = value.data;
					if (this._text) {
						this.content = require('abbreviationUtils')
							.insertChildContent(value.data, this._text);
					}
				}
			}
			
			return this._data[name];
		},
		
		/**
		 * Returns name of current node
		 * @returns {String}
		 */
		name: function() {
			var res = this.matchedResource();
			if (require('elements').is(res, 'element')) {
				return res.name;
			}
			
			return this._name;
		},
		
		/**
		 * Returns list of attributes for current node
		 * @returns {Array}
		 */
		attributeList: function() {
			var attrs = [];
			
			var res = this.matchedResource();
			if (require('elements').is(res, 'element') && _.isArray(res.attributes)) {
				attrs = attrs.concat(res.attributes);
			}
			
			return optimizeAttributes(attrs.concat(this._attributes));
		},
		
		/**
		 * Returns or sets attribute value
		 * @param {String} name Attribute name
		 * @param {String} value New attribute value
		 * @returns {String}
		 */
		attribute: function(name, value) {
			if (arguments.length == 2) {
				// modifying attribute
				var ix = _.indexOf(_.pluck(this._attributes, 'name'), name.toLowerCase());
				if (~ix) {
					this._attributes[ix].value = value;
				} else {
					this._attributes.push({
						name: name,
						value: value
					});
				}
			}
			
			return (_.find(this.attributeList(), function(attr) {
				return attr.name == name;
			}) || {}).value;
		},
		
		/**
		 * Returns reference to the matched <code>element</code>, if any.
		 * See {@link elements} module for a list of available elements
		 * @returns {Object}
		 */
		matchedResource: function() {
			return this.data('resource');
		},
		
		/**
		 * Returns index of current node in parent‘s children list
		 * @returns {Number}
		 */
		index: function() {
			return this.parent ? _.indexOf(this.parent.children, this) : -1;
		},
		
		/**
		 * Sets how many times current element should be repeated
		 * @private
		 */
		_setRepeat: function(count) {
			if (count) {
				this.repeatCount = parseInt(count, 10) || 1;
			} else {
				this.hasImplicitRepeat = true;
			}
		},
		
		/**
		 * Sets abbreviation that belongs to current node
		 * @param {String} abbr
		 */
		setAbbreviation: function(abbr) {
			abbr = abbr || '';
			
			var that = this;
			
			// find multiplier
			abbr = abbr.replace(/\*(\d+)?$/, function(str, repeatCount) {
				that._setRepeat(repeatCount);
				return '';
			});
			
			this.abbreviation = abbr;
			
			var abbrText = extractText(abbr);
			if (abbrText) {
				abbr = abbrText.element;
				this.content = this._text = abbrText.text;
			}
			
			var abbrAttrs = parseAttributes(abbr);
			if (abbrAttrs) {
				abbr = abbrAttrs.element;
				this._attributes = abbrAttrs.attributes;
			}
			
			this._name = abbr;
			
			// validate name
			if (this._name && !reValidName.test(this._name)) {
				throw 'Invalid abbreviation';
			}
		},
		
		/**
		 * Returns string representation of current node
		 * @return {String}
		 */
		toString: function() {
			var utils = require('utils');
			
			var start = this.start;
			var end = this.end;
			var content = this.content;
			
			// apply output processors
			var node = this;
			_.each(outputProcessors, function(fn) {
				start = fn(start, node, 'start');
				content = fn(content, node, 'content');
				end = fn(end, node, 'end');
			});
			
			
			var innerContent = _.map(this.children, function(child) {
				return child.toString();
			}).join('');
			
			content = require('abbreviationUtils').insertChildContent(content, innerContent, {
				keepVariable: false
			});
			
			return start + utils.padString(content, this.padding) + end;
		},
		
		/**
		 * Check if current node contains children with empty <code>expr</code>
		 * property
		 * @return {Boolean}
		 */
		hasEmptyChildren: function() {
			return !!_.find(this.children, function(child) {
				return child.isEmpty();
			});
		},
		
		/**
		 * Check if current node has implied name that should be resolved
		 * @returns {Boolean}
		 */
		hasImplicitName: function() {
			return !this._name && !this.isTextNode();
		},
		
		/**
		 * Indicates that current element is a grouping one, e.g. has no 
		 * representation but serves as a container for other nodes
		 * @returns {Boolean}
		 */
		isGroup: function() {
			return !this.abbreviation;
		},
		
		/**
		 * Indicates empty node (i.e. without abbreviation). It may be a 
		 * grouping node and should not be outputted
		 * @return {Boolean}
		 */
		isEmpty: function() {
			return !this.abbreviation && !this.children.length;
		},
		
		/**
		 * Indicates that current node should be repeated
		 * @returns {Boolean}
		 */
		isRepeating: function() {
			return this.repeatCount > 1 || this.hasImplicitRepeat;
		},
		
		/**
		 * Check if current node is a text-only node
		 * @return {Boolean}
		 */
		isTextNode: function() {
			return !this.name() && !this.attributeList().length;
		},
		
		/**
		 * Indicates whether this node may be used to build elements or snippets
		 * @returns {Boolean}
		 */
		isElement: function() {
			return !this.isEmpty() && !this.isTextNode();
		},
		
		/**
		 * Returns latest and deepest child of current tree
		 * @returns {AbbreviationNode}
		 */
		deepestChild: function() {
			if (!this.children.length)
				return null;
				
			var deepestChild = this;
			while (deepestChild.children.length) {
				deepestChild = _.last(deepestChild.children);
			}
			
			return deepestChild;
		}
	};
	
	/**
	 * Returns stripped string: a string without first and last character.
	 * Used for “unquoting” strings
	 * @param {String} str
	 * @returns {String}
	 */
	function stripped(str) {
		return str.substring(1, str.length - 1);
	}
	
	function consumeQuotedValue(stream, quote) {
		var ch;
		while ((ch = stream.next())) {
			if (ch === quote)
				return true;
			
			if (ch == '\\')
				continue;
		}
		
		return false;
	}
	
	/**
	 * Parses abbreviation into a tree
	 * @param {String} abbr
	 * @returns {AbbreviationNode}
	 */
	function parseAbbreviation(abbr) {
		abbr = require('utils').trim(abbr);
		
		var root = new AbbreviationNode();
		var context = root.addChild(), ch;
		
		/** @type StringStream */
		var stream = require('stringStream').create(abbr);
		var loopProtector = 1000, multiplier;
		var addChild = function(child) {
			context.addChild(child);
		};

		var consumeAbbr = function() {
			stream.start = stream.pos;
			stream.eatWhile(function(c) {
				if (c == '[' || c == '{') {
					if (stream.skipToPair(c, pairs[c])) {
						stream.backUp(1);
						return true;
					}
					
					throw 'Invalid abbreviation: mo matching "' + pairs[c] + '" found for character at ' + stream.pos;
				}
				
				if (c == '+') {
					// let's see if this is an expando marker
					stream.next();
					var isMarker = stream.eol() ||  ~'+>^*'.indexOf(stream.peek());
					stream.backUp(1);
					return isMarker;
				}
				
				return c != '(' && isAllowedChar(c);
			});
		};
		
		while (!stream.eol() && --loopProtector > 0) {
			ch = stream.peek();
			
			switch (ch) {
				case '(': // abbreviation group
					stream.start = stream.pos;
					if (stream.skipToPair('(', ')')) {
						var inner = parseAbbreviation(stripped(stream.current()));
						if ((multiplier = stream.match(/^\*(\d+)?/, true))) {
							context._setRepeat(multiplier[1]);
						}
						
						_.each(inner.children, addChild);
					} else {
						throw 'Invalid abbreviation: mo matching ")" found for character at ' + stream.pos;
					}
					break;
					
				case '>': // child operator
					context = context.addChild();
					stream.next();
					break;
					
				case '+': // sibling operator
					context = context.parent.addChild();
					stream.next();
					break;
					
				case '^': // climb up operator
					var parent = context.parent || context;
					context = (parent.parent || parent).addChild();
					stream.next();
					break;
					
				default: // consume abbreviation
					consumeAbbr();
					context.setAbbreviation(stream.current());
					stream.start = stream.pos;
			}
		}
		
		if (loopProtector < 1)
			throw 'Endless loop detected';
		
		return root;
	}
	
	/**
	 * Extract attributes and their values from attribute set: 
	 * <code>[attr col=3 title="Quoted string"]</code>
	 * @param {String} attrSet
	 * @returns {Array}
	 */
	function extractAttributes(attrSet, attrs) {
		attrSet = require('utils').trim(attrSet);
		var result = [];
		
		/** @type StringStream */
		var stream = require('stringStream').create(attrSet);
		stream.eatSpace();
		
		while (!stream.eol()) {
			stream.start = stream.pos;
			if (stream.eatWhile(reWord)) {
				var attrName = stream.current();
				var attrValue = '';
				if (stream.peek() == '=') {
					stream.next();
					stream.start = stream.pos;
					var quote = stream.peek();
					
					if (quote == '"' || quote == "'") {
						stream.next();
						if (consumeQuotedValue(stream, quote)) {
							attrValue = stream.current();
							// strip quotes
							attrValue = attrValue.substring(1, attrValue.length - 1);
						} else {
							throw 'Invalid attribute value';
						}
					} else if (stream.eatWhile(/[^\s\]]/)) {
						attrValue = stream.current();
					} else {
						throw 'Invalid attribute value';
					}
				}
				
				result.push({
					name: attrName, 
					value: attrValue
				});
				stream.eatSpace();
			} else {
				break;
			}
		}
		
		return result;
	}
	
	/**
	 * Parses tag attributes extracted from abbreviation. If attributes found, 
	 * returns object with <code>element</code> and <code>attributes</code>
	 * properties
	 * @param {String} abbr
	 * @returns {Object} Returns <code>null</code> if no attributes found in 
	 * abbreviation
	 */
	function parseAttributes(abbr) {
		/*
		 * Example of incoming data:
		 * #header
		 * .some.data
		 * .some.data#header
		 * [attr]
		 * #item[attr=Hello other="World"].class
		 */
		var result = [];
		var attrMap = {'#': 'id', '.': 'class'};
		var nameEnd = null;
		
		/** @type StringStream */
		var stream = require('stringStream').create(abbr);
		while (!stream.eol()) {
			switch (stream.peek()) {
				case '#': // id
				case '.': // class
					if (nameEnd === null)
						nameEnd = stream.pos;
					
					var attrName = attrMap[stream.peek()];
					
					stream.next();
					stream.start = stream.pos;
					stream.eatWhile(reWord);
					result.push({
						name: attrName, 
						value: stream.current()
					});
					break;
				case '[': //begin attribute set
					if (nameEnd === null)
						nameEnd = stream.pos;
					
					stream.start = stream.pos;
					if (!stream.skipToPair('[', ']')) 
						throw 'Invalid attribute set definition';
					
					result = result.concat(
						extractAttributes(stripped(stream.current()))
					);
					break;
				default:
					stream.next();
			}
		}
		
		if (!result.length)
			return null;
		
		return {
			element: abbr.substring(0, nameEnd),
			attributes: optimizeAttributes(result)
		};
	}
	
	/**
	 * Optimize attribute set: remove duplicates and merge class attributes
	 * @param attrs
	 */
	function optimizeAttributes(attrs) {
		// clone all attributes to make sure that original objects are 
		// not modified
		attrs  = _.map(attrs, function(attr) {
			return _.clone(attr);
		});
		
		var lookup = {};
		return _.filter(attrs, function(attr) {
			if (!(attr.name in lookup)) {
				return lookup[attr.name] = attr;
			}
			
			var la = lookup[attr.name];
			
			if (attr.name.toLowerCase() == 'class') {
				la.value += (la.value.length ? ' ' : '') + attr.value;
			} else {
				la.value = attr.value;
			}
			
			return false;
		});
	}
	
	/**
	 * Extract text data from abbreviation: if <code>a{hello}</code> abbreviation
	 * is passed, returns object <code>{element: 'a', text: 'hello'}</code>.
	 * If nothing found, returns <code>null</code>
	 * @param {String} abbr
	 * 
	 */
	function extractText(abbr) {
		if (!~abbr.indexOf('{'))
			return null;
		
		/** @type StringStream */
		var stream = require('stringStream').create(abbr);
		while (!stream.eol()) {
			switch (stream.peek()) {
				case '[':
				case '(':
					stream.skipToPair(stream.peek(), pairs[stream.peek()]); break;
					
				case '{':
					stream.start = stream.pos;
					stream.skipToPair('{', '}');
					return {
						element: abbr.substring(0, stream.start),
						text: stripped(stream.current())
					};
					
				default:
					stream.next();
			}
		}
	}
	
	/**
	 * “Un-rolls“ contents of current node: recursively replaces all repeating 
	 * children with their repeated clones
	 * @param {AbbreviationNode} node
	 * @returns {AbbreviationNode}
	 */
	function unroll(node) {
		for (var i = node.children.length - 1, j, child, maxCount; i >= 0; i--) {
			child = node.children[i];
			
			if (child.isRepeating()) {
				maxCount = j = child.repeatCount;
				child.repeatCount = 1;
				child.updateProperty('counter', 1);
				child.updateProperty('maxCount', maxCount);
				while (--j > 0) {
					child.parent.addChild(child.clone(), i + 1)
						.updateProperty('counter', j + 1)
						.updateProperty('maxCount', maxCount);
				}
			}
		}
		
		// to keep proper 'counter' property, we need to walk
		// on children once again
		_.each(node.children, unroll);
		
		return node;
	}
	
	/**
	 * Optimizes tree node: replaces empty nodes with their children
	 * @param {AbbreviationNode} node
	 * @return {AbbreviationNode}
	 */
	function squash(node) {
		for (var i = node.children.length - 1; i >= 0; i--) {
			/** @type AbbreviationNode */
			var n = node.children[i];
			if (n.isGroup()) {
				n.replace(squash(n).children);
			} else if (n.isEmpty()) {
				n.remove();
			}
		}
		
		_.each(node.children, squash);
		
		return node;
	}
	
	function isAllowedChar(ch) {
		var charCode = ch.charCodeAt(0);
		var specialChars = '#.*:$-_!@|%';
		
		return (charCode > 64 && charCode < 91)       // uppercase letter
				|| (charCode > 96 && charCode < 123)  // lowercase letter
				|| (charCode > 47 && charCode < 58)   // number
				|| specialChars.indexOf(ch) != -1;    // special character
	}
	
	// XXX add counter replacer function as output processor
	outputProcessors.push(function(text, node) {
		return require('utils').replaceCounter(text, node.counter, node.maxCount);
	});
	
	return {
		/**
		 * Parses abbreviation into tree with respect of groups, 
		 * text nodes and attributes. Each node of the tree is a single 
		 * abbreviation. Tree represents actual structure of the outputted 
		 * result
		 * @memberOf abbreviationParser
		 * @param {String} abbr Abbreviation to parse
		 * @param {Object} options Additional options for parser and processors
		 * 
		 * @return {AbbreviationNode}
		 */
		parse: function(abbr, options) {
			options = options || {};
			
			var tree = parseAbbreviation(abbr);
			
			if (options.contextNode) {
				// add info about context node –
				// a parent XHTML node in editor inside which abbreviation is 
				// expanded
				tree._name = options.contextNode.name;
				var attrLookup = {};
				_.each(tree._attributes, function(attr) {
					attrLookup[attr.name] = attr;
				});
				
				_.each(options.contextNode.attributes, function(attr) {
					if (attr.name in attrLookup) {
						attrLookup[attr.name].value = attr.value;
					} else {
						attr = _.clone(attr);
						tree._attributes.push(attr);
						attrLookup[attr.name] = attr;
					}
				});
			}
			
			
			// apply preprocessors
			_.each(preprocessors, function(fn) {
				fn(tree, options);
			});
			
			tree = squash(unroll(tree));
			
			// apply postprocessors
			_.each(postprocessors, function(fn) {
				fn(tree, options);
			});
			
			return tree;
		},
		
		AbbreviationNode: AbbreviationNode,
		
		/**
		 * Add new abbreviation preprocessor. <i>Preprocessor</i> is a function
		 * that applies to a parsed abbreviation tree right after it get parsed.
		 * The passed tree is in unoptimized state.
		 * @param {Function} fn Preprocessor function. This function receives
		 * two arguments: parsed abbreviation tree (<code>AbbreviationNode</code>)
		 * and <code>options</code> hash that was passed to <code>parse</code>
		 * method
		 */
		addPreprocessor: function(fn) {
			if (!_.include(preprocessors, fn))
				preprocessors.push(fn);
		},
		
		/**
		 * Removes registered preprocessor
		 */
		removeFilter: function(fn) {
			_.without(preprocessors, fn);
		},
		
		/**
		 * Adds new abbreviation postprocessor. <i>Postprocessor</i> is a 
		 * functinon that applies to <i>optimized</i> parsed abbreviation tree
		 * right before it returns from <code>parse()</code> method
		 * @param {Function} fn Postprocessor function. This function receives
		 * two arguments: parsed abbreviation tree (<code>AbbreviationNode</code>)
		 * and <code>options</code> hash that was passed to <code>parse</code>
		 * method
		 */
		addPostprocessor: function(fn) {
			if (!_.include(postprocessors, fn))
				postprocessors.push(fn);
		},
		
		/**
		 * Removes registered postprocessor function
		 */
		removePostprocessor: function(fn) {
			postprocessors = _.without(postprocessors, fn);
		},
		
		/**
		 * Registers output postprocessor. <i>Output processor</i> is a 
		 * function that applies to output part (<code>start</code>, 
		 * <code>end</code> and <code>content</code>) when 
		 * <code>AbbreviationNode.toString()</code> method is called
		 */
		addOutputProcessor: function(fn) {
			if (!_.include(outputProcessors, fn))
				outputProcessors.push(fn);
		},
		
		/**
		 * Removes registered output processor
		 */
		removeOutputProcessor: function(fn) {
			outputProcessors = _.without(outputProcessors, fn);
		},
		
		/**
		 * Check if passed symbol is valid symbol for abbreviation expression
		 * @param {String} ch
		 * @return {Boolean}
		 */
		isAllowedChar: function(ch) {
			ch = String(ch); // convert Java object to JS
			return isAllowedChar(ch) || ~'>+^[](){}'.indexOf(ch);
		}
	};
});/**
 * Processor function that matches parsed <code>AbbreviationNode</code>
 * against resources defined in <code>resource</code> module
 * @param {Function} require
 * @param {Underscore} _
 */ 
emmet.exec(function(require, _) {
	/**
	 * Finds matched resources for child nodes of passed <code>node</code> 
	 * element. A matched resource is a reference to <i>snippets.json</i> entry
	 * that describes output of parsed node 
	 * @param {AbbreviationNode} node
	 * @param {String} syntax
	 */
	function matchResources(node, syntax) {
		var resources = require('resources');
		var elements = require('elements');
		var parser = require('abbreviationParser');
		
		// do a shallow copy because the children list can be modified during
		// resource matching
		_.each(_.clone(node.children), /** @param {AbbreviationNode} child */ function(child) {
			var r = resources.getMatchedResource(child, syntax);
			if (_.isString(r)) {
				child.data('resource', elements.create('snippet', r));
			} else if (elements.is(r, 'reference')) {
				// it’s a reference to another abbreviation:
				// parse it and insert instead of current child
				/** @type AbbreviationNode */
				var subtree = parser.parse(r.data, {
					syntax: syntax
				});
				
				// if context element should be repeated, check if we need to 
				// transfer repeated element to specific child node
				if (child.repeatCount > 1) {
					var repeatedChildren = subtree.findAll(function(node) {
						return node.hasImplicitRepeat;
					});
					
					_.each(repeatedChildren, function(node) {
						node.repeatCount = child.repeatCount;
						node.hasImplicitRepeat = false;
					});
				}
				
				// move child‘s children into the deepest child of new subtree
				var deepestChild = subtree.deepestChild();
				if (deepestChild) {
					_.each(child.children, function(c) {
						deepestChild.addChild(c);
					});
				}
				
				// copy current attributes to children
				_.each(subtree.children, function(node) {
					_.each(child.attributeList(), function(attr) {
						node.attribute(attr.name, attr.value);
					});
				});
				
				child.replace(subtree.children);
			} else {
				child.data('resource', r);
			}
			
			matchResources(child, syntax);
		});
	}
	
	// XXX register abbreviation filter that creates references to resources
	// on abbreviation nodes
	/**
	 * @param {AbbreviationNode} tree
	 */
	require('abbreviationParser').addPreprocessor(function(tree, options) {
		var syntax = options.syntax || emmet.defaultSyntax();
		matchResources(tree, syntax);
	});
	
});/**
 * Pasted content abbreviation processor. A pasted content is a content that
 * should be inserted into implicitly repeated abbreviation nodes.
 * This processor powers “Wrap With Abbreviation” action
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	var parser = require('abbreviationParser');
	var outputPlaceholder = '$#';
	
	/**
	 * Locates output placeholders inside text
	 * @param {String} text
	 * @returns {Array} Array of ranges of output placeholder in text
	 */
	function locateOutputPlaceholder(text) {
		var range = require('range');
		var result = [];
		
		/** @type StringStream */
		var stream = require('stringStream').create(text);
		
		while (!stream.eol()) {
			if (stream.peek() == '\\') {
				stream.next();
			} else {
				stream.start = stream.pos;
				if (stream.match(outputPlaceholder, true)) {
					result.push(range.create(stream.start, outputPlaceholder));
					continue;
				}
			}
			stream.next();
		}
		
		return result;
	}
	
	/**
	 * Replaces output placeholders inside <code>source</code> with 
	 * <code>value</code>
	 * @param {String} source
	 * @param {String} value
	 * @returns {String}
	 */
	function replaceOutputPlaceholders(source, value) {
		var utils = require('utils');
		var ranges = locateOutputPlaceholder(source);
		
		ranges.reverse();
		_.each(ranges, function(r) {
			source = utils.replaceSubstring(source, value, r);
		});
		
		return source;
	}
	
	/**
	 * Check if parsed node contains output placeholder – a target where
	 * pasted content should be inserted
	 * @param {AbbreviationNode} node
	 * @returns {Boolean}
	 */
	function hasOutputPlaceholder(node) {
		if (locateOutputPlaceholder(node.content).length)
			return true;
		
		// check if attributes contains placeholder
		return !!_.find(node.attributeList(), function(attr) {
			return !!locateOutputPlaceholder(attr.value).length;
		});
	}
	
	/**
	 * Insert pasted content into correct positions of parsed node
	 * @param {AbbreviationNode} node
	 * @param {String} content
	 * @param {Boolean} overwrite Overwrite node content if no value placeholders
	 * found instead of appending to existing content
	 */
	function insertPastedContent(node, content, overwrite) {
		var nodesWithPlaceholders = node.findAll(function(item) {
			return hasOutputPlaceholder(item);
		});
		
		if (hasOutputPlaceholder(node))
			nodesWithPlaceholders.unshift(node);
		
		if (nodesWithPlaceholders.length) {
			_.each(nodesWithPlaceholders, function(item) {
				item.content = replaceOutputPlaceholders(item.content, content);
				_.each(item._attributes, function(attr) {
					attr.value = replaceOutputPlaceholders(attr.value, content);
				});
			});
		} else {
			// on output placeholders in subtree, insert content in the deepest
			// child node
			var deepest = node.deepestChild() || node;
			if (overwrite) {
				deepest.content = content;
			} else {
				deepest.content = require('abbreviationUtils').insertChildContent(deepest.content, content);
			}
		}
	}
	
	/**
	 * @param {AbbreviationNode} tree
	 * @param {Object} options
	 */
	parser.addPreprocessor(function(tree, options) {
		if (options.pastedContent) {
			var utils = require('utils');
			var lines = _.map(utils.splitByLines(options.pastedContent, true), utils.trim);
			
			// set repeat count for implicitly repeated elements before
			// tree is unrolled
			tree.findAll(function(item) {
				if (item.hasImplicitRepeat) {
					item.data('paste', lines);
					return item.repeatCount = lines.length;
				}
			});
		}
	});
	
	/**
	 * @param {AbbreviationNode} tree
	 * @param {Object} options
	 */
	parser.addPostprocessor(function(tree, options) {
		// for each node with pasted content, update text data
		var targets = tree.findAll(function(item) {
			var pastedContentObj = item.data('paste');
			var pastedContent = '';
			if (_.isArray(pastedContentObj)) {
				pastedContent = pastedContentObj[item.counter - 1];
			} else if (_.isFunction(pastedContentObj)) {
				pastedContent = pastedContentObj(item.counter - 1, item.content);
			} else if (pastedContentObj) {
				pastedContent = pastedContentObj;
			}
			
			if (pastedContent) {
				insertPastedContent(item, pastedContent, !!item.data('pasteOverwrites'));
			}
			
			item.data('paste', null);
			return !!pastedContentObj;
		});
		
		if (!targets.length && options.pastedContent) {
			// no implicitly repeated elements, put pasted content in
			// the deepest child
			insertPastedContent(tree, options.pastedContent);
		}
	});
});/**
 * Resolves tag names in abbreviations with implied name
 */
emmet.exec(function(require, _) {
	/**
	 * Resolves implicit node names in parsed tree
	 * @param {AbbreviationNode} tree
	 */
	function resolveNodeNames(tree) {
		var tagName = require('tagName');
		_.each(tree.children, function(node) {
			if (node.hasImplicitName() || node.data('forceNameResolving')) {
				node._name = tagName.resolve(node.parent.name());
			}
			resolveNodeNames(node);
		});
		
		return tree;
	}
	
	require('abbreviationParser').addPostprocessor(resolveNodeNames);
});/**
 * @author Stoyan Stefanov
 * @link https://github.com/stoyan/etc/tree/master/cssex
 */

emmet.define('cssParser', function(require, _) {
var walker, tokens = [], isOp, isNameChar, isDigit;
	
	// walks around the source
	walker = {
		lines: null,
		total_lines: 0,
		linenum: -1,
		line: '',
		ch: '',
		chnum: -1,
		init: function (source) {
			var me = walker;
		
			// source, yumm
			me.lines = source
				.replace(/\r\n/g, '\n')
				.replace(/\r/g, '\n')
				.split('\n');
			me.total_lines = me.lines.length;
		
			// reset
			me.chnum = -1;
			me.linenum = -1;
			me.ch = '';
			me.line = '';
		
			// advance
			me.nextLine();
			me.nextChar();
		},
		nextLine: function () {
			var me = this;
			me.linenum += 1;
			if (me.total_lines <= me.linenum) {
				me.line = false;
			} else {
				me.line = me.lines[me.linenum];
			}
			if (me.chnum !== -1) {
				me.chnum = 0;
			}
			return me.line;
		}, 
		nextChar: function () {
			var me = this;
			me.chnum += 1;
			while (me.line.charAt(me.chnum) === '') {
				if (this.nextLine() === false) {
					me.ch = false;
					return false; // end of source
				}
				me.chnum = -1;
				me.ch = '\n';
				return '\n';
			}
			me.ch = me.line.charAt(me.chnum);
			return me.ch;
		},
		peek: function() {
			return this.line.charAt(this.chnum + 1);
		}
	};

	// utility helpers
	isNameChar = function (c) {
		// be more tolerate for name tokens: allow & character for LESS syntax
		return (c == '&' || c === '_' || c === '-' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
	};

	isDigit = function (ch) {
		return (ch !== false && ch >= '0' && ch <= '9');
	};  

	isOp = (function () {
		var opsa = "{}[]()+*=.,;:>~|\\%$#@^!".split(''),
			opsmatcha = "*^|$~".split(''),
			ops = {},
			opsmatch = {},
			i = 0;
		for (; i < opsa.length; i += 1) {
			ops[opsa[i]] = true;
		}
		for (i = 0; i < opsmatcha.length; i += 1) {
			opsmatch[opsmatcha[i]] = true;
		}
		return function (ch, matchattr) {
			if (matchattr) {
				return !!opsmatch[ch];
			}
			return !!ops[ch];
		};
	}());
	
	// shorthands
	function isset(v) {
		return typeof v !== 'undefined';
	}
	function getConf() {
		return {
			'char': walker.chnum,
			line: walker.linenum
		};
	}


	// creates token objects and pushes them to a list
	function tokener(value, type, conf) {
		var w = walker, c = conf || {};
		tokens.push({
			charstart: isset(c['char']) ? c['char'] : w.chnum,
			charend:   isset(c.charend) ? c.charend : w.chnum,
			linestart: isset(c.line)    ? c.line    : w.linenum,
			lineend:   isset(c.lineend) ? c.lineend : w.linenum,
			value:     value,
			type:      type || value
		});
	}
	
	// oops
	function error(m, config) { 
		var w = walker,
			conf = config || {},
			c = isset(conf['char']) ? conf['char'] : w.chnum,
			l = isset(conf.line) ? conf.line : w.linenum;
		return {
			name: "ParseError",
			message: m + " at line " + (l + 1) + ' char ' + (c + 1),
			walker: w,
			tokens: tokens
		};
	}


	// token handlers follow for:
	// white space, comment, string, identifier, number, operator
	function white() {
	
		var c = walker.ch,
			token = '',
			conf = getConf();
	
		while (c === " " || c === "\t") {
			token += c;
			c = walker.nextChar();
		}
	
		tokener(token, 'white', conf);
	
	}

	function comment() {
	
		var w = walker,
			c = w.ch,
			token = c,
			cnext,
			conf = getConf();    
	 
		cnext = w.nextChar();

		if (cnext === '/') {
			// inline comment in SCSS and such
			token += cnext;
			var pk = w.peek();
			while (pk && pk !== '\n') {
				token += cnext;
				cnext = w.nextChar();
				pk = w.peek();
			}
		} else if (cnext === '*') {
			// multiline CSS commment
			while (!(c === "*" && cnext === "/")) {
				token += cnext;
				c = cnext;
				cnext = w.nextChar();        
			}            
		} else {
			// oops, not a comment, just a /
			conf.charend = conf['char'];
			conf.lineend = conf.line;
			return tokener(token, token, conf);
		}
		
		token += cnext;
		w.nextChar();
		tokener(token, 'comment', conf);
	}

	function str() {
		var w = walker,
			c = w.ch,
			q = c,
			token = c,
			cnext,
			conf = getConf();
	
		c = w.nextChar();
	
		while (c !== q) {
			
			if (c === '\n') {
				cnext = w.nextChar();
				if (cnext === "\\") {
					token += c + cnext;
				} else {
					// end of line with no \ escape = bad
					throw error("Unterminated string", conf);
				}
			} else {
				if (c === "\\") {
					token += c + w.nextChar();
				} else {
					token += c;
				}
			}
		
			c = w.nextChar();
		
		}
		token += c;
		w.nextChar();
		tokener(token, 'string', conf);
	}
	
	function brace() {
		var w = walker,
			c = w.ch,
			depth = 0,
			token = c,
			conf = getConf();
	
		c = w.nextChar();
	
		while (c !== ')' && !depth) {
			if (c === '(') {
				depth++;
			} else if (c === ')') {
				depth--;
			} else if (c === false) {
				throw error("Unterminated brace", conf);
			}
			
			token += c;
			c = w.nextChar();
		}
		
		token += c;
		w.nextChar();
		tokener(token, 'brace', conf);
	}

	function identifier(pre) {
		var w = walker,
			c = w.ch,
			conf = getConf(),
			token = (pre) ? pre + c : c;
			
		c = w.nextChar();
	
		if (pre) { // adjust token position
			conf['char'] -= pre.length;
		}
		
		while (isNameChar(c) || isDigit(c)) {
			token += c;
			c = w.nextChar();
		}
	
		tokener(token, 'identifier', conf);    
	}

	function num() {
		var w = walker,
			c = w.ch,
			conf = getConf(),
			token = c,
			point = token === '.',
			nondigit;
		
		c = w.nextChar();
		nondigit = !isDigit(c);
	
		// .2px or .classname?
		if (point && nondigit) {
			// meh, NaN, could be a class name, so it's an operator for now
			conf.charend = conf['char'];
			conf.lineend = conf.line;
			return tokener(token, '.', conf);    
		}
		
		// -2px or -moz-something
		if (token === '-' && nondigit) {
			return identifier('-');
		}
	
		while (c !== false && (isDigit(c) || (!point && c === '.'))) { // not end of source && digit or first instance of .
			if (c === '.') {
				point = true;
			}
			token += c;
			c = w.nextChar();
		}

		tokener(token, 'number', conf);    
	
	}

	function op() {
		var w = walker,
			c = w.ch,
			conf = getConf(),
			token = c,
			next = w.nextChar();
			
		if (next === "=" && isOp(token, true)) {
			token += next;
			tokener(token, 'match', conf);
			w.nextChar();
			return;
		} 
		
		conf.charend = conf['char'] + 1;
		conf.lineend = conf.line;    
		tokener(token, token, conf);
	}


	// call the appropriate handler based on the first character in a token suspect
	function tokenize() {

		var ch = walker.ch;
	
		if (ch === " " || ch === "\t") {
			return white();
		}

		if (ch === '/') {
			return comment();
		} 

		if (ch === '"' || ch === "'") {
			return str();
		}
		
		if (ch === '(') {
			return brace();
		}
	
		if (ch === '-' || ch === '.' || isDigit(ch)) { // tricky - char: minus (-1px) or dash (-moz-stuff)
			return num();
		}
	
		if (isNameChar(ch)) {
			return identifier();
		}

		if (isOp(ch)) {
			return op();
		}
		
		if (ch === "\n") {
			tokener("line");
			walker.nextChar();
			return;
		}
		
		throw error("Unrecognized character");
	}
	
	/**
	 * Returns newline character at specified position in content
	 * @param {String} content
	 * @param {Number} pos
	 * @return {String}
	 */
	function getNewline(content, pos) {
		return content.charAt(pos) == '\r' && content.charAt(pos + 1) == '\n' 
			? '\r\n' 
			: content.charAt(pos);
	}

	return {
		/**
		 * @param source
		 * @returns
		 * @memberOf emmet.cssParser
		 */
		lex: function (source) {
			walker.init(source);
			tokens = [];
			while (walker.ch !== false) {
				tokenize();            
			}
			return tokens;
		},
		
		/**
		 * Tokenizes CSS source
		 * @param {String} source
		 * @returns {Array}
		 */
		parse: function(source) {
			// transform tokens
			var pos = 0;
			return _.map(this.lex(source), function(token) {
				if (token.type == 'line') {
					token.value = getNewline(source, pos);
				}
				
				return {
					type: token.type,
					start: pos,
					end: (pos += token.value.length)
				};
			});
		},
		
		toSource: function (toks) {
			var i = 0, max = toks.length, t, src = '';
			for (; i < max; i += 1) {
				t = toks[i];
				if (t.type === 'line') {
					src += '\n';
				} else {
					src += t.value;
				}
			}
			return src;
		}
	};
});/**
 * HTML tokenizer by Marijn Haverbeke
 * http://codemirror.net/
 * @constructor
 * @memberOf __xmlParseDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('xmlParser', function(require, _) {
	var Kludges = {
		autoSelfClosers : {},
		implicitlyClosed : {},
		contextGrabbers : {},
		doNotIndent : {},
		allowUnquoted : true,
		allowMissing : true
	};

	// Return variables for tokenizers
	var tagName = null, type = null;

	function inText(stream, state) {
		function chain(parser) {
			state.tokenize = parser;
			return parser(stream, state);
		}

		var ch = stream.next();
		if (ch == "<") {
			if (stream.eat("!")) {
				if (stream.eat("[")) {
					if (stream.match("CDATA["))
						return chain(inBlock("atom", "]]>"));
					else
						return null;
				} else if (stream.match("--"))
					return chain(inBlock("comment", "-->"));
				else if (stream.match("DOCTYPE", true, true)) {
					stream.eatWhile(/[\w\._\-]/);
					return chain(doctype(1));
				} else
					return null;
			} else if (stream.eat("?")) {
				stream.eatWhile(/[\w\._\-]/);
				state.tokenize = inBlock("meta", "?>");
				return "meta";
			} else {
				type = stream.eat("/") ? "closeTag" : "openTag";
				stream.eatSpace();
				tagName = "";
				var c;
				while ((c = stream.eat(/[^\s\u00a0=<>\"\'\/?]/)))
					tagName += c;
				state.tokenize = inTag;
				return "tag";
			}
		} else if (ch == "&") {
			var ok;
			if (stream.eat("#")) {
				if (stream.eat("x")) {
					ok = stream.eatWhile(/[a-fA-F\d]/) && stream.eat(";");
				} else {
					ok = stream.eatWhile(/[\d]/) && stream.eat(";");
				}
			} else {
				ok = stream.eatWhile(/[\w\.\-:]/) && stream.eat(";");
			}
			return ok ? "atom" : "error";
		} else {
			stream.eatWhile(/[^&<]/);
			return "text";
		}
	}

	function inTag(stream, state) {
		var ch = stream.next();
		if (ch == ">" || (ch == "/" && stream.eat(">"))) {
			state.tokenize = inText;
			type = ch == ">" ? "endTag" : "selfcloseTag";
			return "tag";
		} else if (ch == "=") {
			type = "equals";
			return null;
		} else if (/[\'\"]/.test(ch)) {
			state.tokenize = inAttribute(ch);
			return state.tokenize(stream, state);
		} else {
			stream.eatWhile(/[^\s\u00a0=<>\"\'\/?]/);
			return "word";
		}
	}

	function inAttribute(quote) {
		return function(stream, state) {
			while (!stream.eol()) {
				if (stream.next() == quote) {
					state.tokenize = inTag;
					break;
				}
			}
			return "string";
		};
	}

	function inBlock(style, terminator) {
		return function(stream, state) {
			while (!stream.eol()) {
				if (stream.match(terminator)) {
					state.tokenize = inText;
					break;
				}
				stream.next();
			}
			return style;
		};
	}
	
	function doctype(depth) {
		return function(stream, state) {
			var ch;
			while ((ch = stream.next()) !== null) {
				if (ch == "<") {
					state.tokenize = doctype(depth + 1);
					return state.tokenize(stream, state);
				} else if (ch == ">") {
					if (depth == 1) {
						state.tokenize = inText;
						break;
					} else {
						state.tokenize = doctype(depth - 1);
						return state.tokenize(stream, state);
					}
				}
			}
			return "meta";
		};
	}

	var curState = null, setStyle;
	function pass() {
		for (var i = arguments.length - 1; i >= 0; i--)
			curState.cc.push(arguments[i]);
	}
	
	function cont() {
		pass.apply(null, arguments);
		return true;
	}

	function pushContext(tagName, startOfLine) {
		var noIndent = Kludges.doNotIndent.hasOwnProperty(tagName) 
			|| (curState.context && curState.context.noIndent);
		curState.context = {
			prev : curState.context,
			tagName : tagName,
			indent : curState.indented,
			startOfLine : startOfLine,
			noIndent : noIndent
		};
	}
	
	function popContext() {
		if (curState.context)
			curState.context = curState.context.prev;
	}

	function element(type) {
		if (type == "openTag") {
			curState.tagName = tagName;
			return cont(attributes, endtag(curState.startOfLine));
		} else if (type == "closeTag") {
			var err = false;
			if (curState.context) {
				if (curState.context.tagName != tagName) {
					if (Kludges.implicitlyClosed.hasOwnProperty(curState.context.tagName.toLowerCase())) {
						popContext();
					}
					err = !curState.context || curState.context.tagName != tagName;
				}
			} else {
				err = true;
			}
			
			if (err)
				setStyle = "error";
			return cont(endclosetag(err));
		}
		return cont();
	}
	
	function endtag(startOfLine) {
		return function(type) {
			if (type == "selfcloseTag"
					|| (type == "endTag" && Kludges.autoSelfClosers
							.hasOwnProperty(curState.tagName
									.toLowerCase()))) {
				maybePopContext(curState.tagName.toLowerCase());
				return cont();
			}
			if (type == "endTag") {
				maybePopContext(curState.tagName.toLowerCase());
				pushContext(curState.tagName, startOfLine);
				return cont();
			}
			return cont();
		};
	}
	
	function endclosetag(err) {
		return function(type) {
			if (err)
				setStyle = "error";
			if (type == "endTag") {
				popContext();
				return cont();
			}
			setStyle = "error";
			return cont(arguments.callee);
		};
	}
	
	function maybePopContext(nextTagName) {
		var parentTagName;
		while (true) {
			if (!curState.context) {
				return;
			}
			parentTagName = curState.context.tagName.toLowerCase();
			if (!Kludges.contextGrabbers.hasOwnProperty(parentTagName)
					|| !Kludges.contextGrabbers[parentTagName].hasOwnProperty(nextTagName)) {
				return;
			}
			popContext();
		}
	}

	function attributes(type) {
		if (type == "word") {
			setStyle = "attribute";
			return cont(attribute, attributes);
		}
		if (type == "endTag" || type == "selfcloseTag")
			return pass();
		setStyle = "error";
		return cont(attributes);
	}
	
	function attribute(type) {
		if (type == "equals")
			return cont(attvalue, attributes);
		if (!Kludges.allowMissing)
			setStyle = "error";
		return (type == "endTag" || type == "selfcloseTag") ? pass()
				: cont();
	}
	
	function attvalue(type) {
		if (type == "string")
			return cont(attvaluemaybe);
		if (type == "word" && Kludges.allowUnquoted) {
			setStyle = "string";
			return cont();
		}
		setStyle = "error";
		return (type == "endTag" || type == "selfCloseTag") ? pass()
				: cont();
	}
	
	function attvaluemaybe(type) {
		if (type == "string")
			return cont(attvaluemaybe);
		else
			return pass();
	}
	
	function startState() {
		return {
			tokenize : inText,
			cc : [],
			indented : 0,
			startOfLine : true,
			tagName : null,
			context : null
		};
	}
	
	function token(stream, state) {
		if (stream.sol()) {
			state.startOfLine = true;
			state.indented = 0;
		}
		
		if (stream.eatSpace())
			return null;

		setStyle = type = tagName = null;
		var style = state.tokenize(stream, state);
		state.type = type;
		if ((style || type) && style != "comment") {
			curState = state;
			while (true) {
				var comb = state.cc.pop() || element;
				if (comb(type || style))
					break;
			}
		}
		state.startOfLine = false;
		return setStyle || style;
	}

	return {
		/**
		 * @memberOf emmet.xmlParser
		 * @returns
		 */
		parse: function(data, offset) {
			offset = offset || 0;
			var state = startState();
			var stream = require('stringStream').create(data);
			var tokens = [];
			while (!stream.eol()) {
				tokens.push({
					type: token(stream, state),
					start: stream.start + offset,
					end: stream.pos + offset
				});
				stream.start = stream.pos;
			}
			
			return tokens;
		}		
	};
});
/*!
 * string_score.js: String Scoring Algorithm 0.1.10 
 *
 * http://joshaven.com/string_score
 * https://github.com/joshaven/string_score
 *
 * Copyright (C) 2009-2011 Joshaven Potter <yourtech@gmail.com>
 * Special thanks to all of the contributors listed here https://github.com/joshaven/string_score
 * MIT license: http://www.opensource.org/licenses/mit-license.php
 *
 * Date: Tue Mar 1 2011
*/

/**
 * Scores a string against another string.
 *  'Hello World'.score('he');     //=> 0.5931818181818181
 *  'Hello World'.score('Hello');  //=> 0.7318181818181818
 */
emmet.define('string-score', function(require, _) {
	return {
		score: function(string, abbreviation, fuzziness) {
			// If the string is equal to the abbreviation, perfect match.
			  if (string == abbreviation) {return 1;}
			  //if it's not a perfect match and is empty return 0
			  if(abbreviation == "") {return 0;}

			  var total_character_score = 0,
			      abbreviation_length = abbreviation.length,
			      string_length = string.length,
			      start_of_string_bonus,
			      abbreviation_score,
			      fuzzies=1,
			      final_score;
			  
			  // Walk through abbreviation and add up scores.
			  for (var i = 0,
			         character_score/* = 0*/,
			         index_in_string/* = 0*/,
			         c/* = ''*/,
			         index_c_lowercase/* = 0*/,
			         index_c_uppercase/* = 0*/,
			         min_index/* = 0*/;
			     i < abbreviation_length;
			     ++i) {
			    
			    // Find the first case-insensitive match of a character.
			    c = abbreviation.charAt(i);
			    
			    index_c_lowercase = string.indexOf(c.toLowerCase());
			    index_c_uppercase = string.indexOf(c.toUpperCase());
			    min_index = Math.min(index_c_lowercase, index_c_uppercase);
			    index_in_string = (min_index > -1) ? min_index : Math.max(index_c_lowercase, index_c_uppercase);
			    
			    if (index_in_string === -1) { 
			      if (fuzziness) {
			        fuzzies += 1-fuzziness;
			        continue;
			      } else {
			        return 0;
			      }
			    } else {
			      character_score = 0.1;
			    }
			    
			    // Set base score for matching 'c'.
			    
			    // Same case bonus.
			    if (string[index_in_string] === c) { 
			      character_score += 0.1; 
			    }
			    
			    // Consecutive letter & start-of-string Bonus
			    if (index_in_string === 0) {
			      // Increase the score when matching first character of the remainder of the string
			      character_score += 0.6;
			      if (i === 0) {
			        // If match is the first character of the string
			        // & the first character of abbreviation, add a
			        // start-of-string match bonus.
			        start_of_string_bonus = 1; //true;
			      }
			    }
			    else {
			  // Acronym Bonus
			  // Weighing Logic: Typing the first character of an acronym is as if you
			  // preceded it with two perfect character matches.
			  if (string.charAt(index_in_string - 1) === ' ') {
			    character_score += 0.8; // * Math.min(index_in_string, 5); // Cap bonus at 0.4 * 5
			  }
			    }
			    
			    // Left trim the already matched part of the string
			    // (forces sequential matching).
			    string = string.substring(index_in_string + 1, string_length);
			    
			    total_character_score += character_score;
			  } // end of for loop
			  
			  // Uncomment to weigh smaller words higher.
			  // return total_character_score / string_length;
			  
			  abbreviation_score = total_character_score / abbreviation_length;
			  //percentage_of_matched_string = abbreviation_length / string_length;
			  //word_score = abbreviation_score * percentage_of_matched_string;
			  
			  // Reduce penalty for longer strings.
			  //final_score = (word_score + abbreviation_score) / 2;
			  final_score = ((abbreviation_score * (abbreviation_length / string_length)) + abbreviation_score) / 2;
			  
			  final_score = final_score / fuzzies;
			  
			  if (start_of_string_bonus && (final_score + 0.15 < 1)) {
			    final_score += 0.15;
			  }
			  
			  return final_score;
		}
	};
});/**
 * Utility module for Emmet
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('utils', function(require, _) {
	/** 
	 * Special token used as a placeholder for caret positions inside 
	 * generated output 
	 */
	var caretPlaceholder = '${0}';
	
	/**
	 * A simple string builder, optimized for faster text concatenation
	 * @param {String} value Initial value
	 */
	function StringBuilder(value) {
		this._data = [];
		this.length = 0;
		
		if (value)
			this.append(value);
	}
	
	StringBuilder.prototype = {
		/**
		 * Append string
		 * @param {String} text
		 */
		append: function(text) {
			this._data.push(text);
			this.length += text.length;
		},
		
		/**
		 * @returns {String}
		 */
		toString: function() {
			return this._data.join('');
		},
		
		/**
		 * @returns {String}
		 */
		valueOf: function() {
			return this.toString();
		}
	};
	
	return {
		/** @memberOf utils */
		reTag: /<\/?[\w:\-]+(?:\s+[\w\-:]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*\s*(\/?)>$/,
		
		/**
		 * Test if passed string ends with XHTML tag. This method is used for testing
		 * '>' character: it belongs to tag or it's a part of abbreviation? 
		 * @param {String} str
		 * @return {Boolean}
		 */
		endsWithTag: function(str) {
			return this.reTag.test(str);
		},
		
		/**
		 * Check if passed symbol is a number
		 * @param {String} ch
		 * @returns {Boolean}
		 */
		isNumeric: function(ch) {
			if (typeof(ch) == 'string')
				ch = ch.charCodeAt(0);
				
			return (ch && ch > 47 && ch < 58);
		},
		
		/**
		 * Trim whitespace from string
		 * @param {String} text
		 * @return {String}
		 */
		trim: function(text) {
			return (text || "").replace(/^\s+|\s+$/g, "");
		},
		
		/**
		 * Returns newline character
		 * @returns {String}
		 */
		getNewline: function() {
			var res = require('resources');
			if (!res) {
				return '\n';
			}
			
			var nl = res.getVariable('newline');
			return _.isString(nl) ? nl : '\n';
		},
		
		/**
		 * Sets new newline character that will be used in output
		 * @param {String} str
		 */
		setNewline: function(str) {
			var res = require('resources');
			res.setVariable('newline', str);
			res.setVariable('nl', str);
		},
		
		/**
		 * Split text into lines. Set <code>remove_empty</code> to true to filter
		 * empty lines
		 * @param {String} text Text to split
		 * @param {Boolean} removeEmpty Remove empty lines from result
		 * @return {Array}
		 */
		splitByLines: function(text, removeEmpty) {
			// IE fails to split string by regexp, 
			// need to normalize newlines first
			// Also, Mozilla's Rhiho JS engine has a weird newline bug
			var nl = this.getNewline();
			var lines = (text || '')
				.replace(/\r\n/g, '\n')
				.replace(/\n\r/g, '\n')
				.replace(/\r/g, '\n')
				.replace(/\n/g, nl)
				.split(nl);
			
			if (removeEmpty) {
				lines = _.filter(lines, function(line) {
					return line.length && !!this.trim(line);
				}, this);
			}
			
			return lines;
		},
		
		/**
		 * Normalizes newline character: replaces newlines in <code>text</code> 
		 * with newline defined in preferences
		 * @param {String} text
		 * @returns {String}
		 */
		normalizeNewline: function(text) {
			return this.splitByLines(text).join(this.getNewline());
		},
		
		/**
		 * Repeats string <code>howMany</code> times
		 * @param {String} str
		 * @param {Number} how_many
		 * @return {String}
		 */
		repeatString: function(str, howMany) {
			var result = [];
			
			for (var i = 0; i < howMany; i++) 
				result.push(str);
				
			return result.join('');
		},
		
		/**
		 * Returns list of paddings that should be used to align passed string
		 * @param {Array} strings
		 * @returns {Array}
		 */
		getStringsPads: function(strings) {
			var lengths = _.map(strings, function(s) {
				return _.isString(s) ? s.length : +s;
			});
			
			var max = _.max(lengths);
			return _.map(lengths, function(l) {
				var pad = max - l;
				return pad ? this.repeatString(' ', pad) : '';
			}, this);
		},
		
		/**
		 * Indents text with padding
		 * @param {String} text Text to indent
		 * @param {String} pad Padding size (number) or padding itself (string)
		 * @return {String}
		 */
		padString: function(text, pad) {
			var padStr = (_.isNumber(pad)) 
				? this.repeatString(require('resources').getVariable('indentation') || '\t', pad) 
				: pad;
				
			var result = [];
			
			var lines = this.splitByLines(text);
			var nl = this.getNewline();
				
			result.push(lines[0]);
			for (var j = 1; j < lines.length; j++) 
				result.push(nl + padStr + lines[j]);
				
			return result.join('');
		},
		
		/**
		 * Pad string with zeroes
		 * @param {String} str String to pad
		 * @param {Number} pad Desired string length
		 * @return {String}
		 */
		zeroPadString: function(str, pad) {
			var padding = '';
			var il = str.length;
				
			while (pad > il++) padding += '0';
			return padding + str; 
		},
		
		/**
		 * Removes padding at the beginning of each text's line
		 * @param {String} text
		 * @param {String} pad
		 */
		unindentString: function(text, pad) {
			var lines = this.splitByLines(text);
			for (var i = 0; i < lines.length; i++) {
				if (lines[i].search(pad) === 0)
					lines[i] = lines[i].substr(pad.length);
			}
			
			return lines.join(this.getNewline());
		},
		
		/**
		 * Replaces unescaped symbols in <code>str</code>. For example, the '$' symbol
		 * will be replaced in 'item$count', but not in 'item\$count'.
		 * @param {String} str Original string
		 * @param {String} symbol Symbol to replace
		 * @param {String} replace Symbol replacement. Might be a function that 
		 * returns new value
		 * @return {String}
		 */
		replaceUnescapedSymbol: function(str, symbol, replace) {
			var i = 0;
			var il = str.length;
			var sl = symbol.length;
			var matchCount = 0;
				
			while (i < il) {
				if (str.charAt(i) == '\\') {
					// escaped symbol, skip next character
					i += sl + 1;
				} else if (str.substr(i, sl) == symbol) {
					// have match
					var curSl = sl;
					matchCount++;
					var newValue = replace;
					if (_.isFunction(replace)) {
						var replaceData = replace(str, symbol, i, matchCount);
						if (replaceData) {
							curSl = replaceData[0].length;
							newValue = replaceData[1];
						} else {
							newValue = false;
						}
					}
					
					if (newValue === false) { // skip replacement
						i++;
						continue;
					}
					
					str = str.substring(0, i) + newValue + str.substring(i + curSl);
					// adjust indexes
					il = str.length;
					i += newValue.length;
				} else {
					i++;
				}
			}
			
			return str;
		},
		
		/**
		 * Replace variables like ${var} in string
		 * @param {String} str
		 * @param {Object} vars Variable set (defaults to variables defined in 
		 * <code>snippets.json</code>) or variable resolver (<code>Function</code>)
		 * @return {String}
		 */
		replaceVariables: function(str, vars) {
			vars = vars || {};
			var resolver = _.isFunction(vars) ? vars : function(str, p1) {
				return p1 in vars ? vars[p1] : null;
			};
			
			var res = require('resources');
			return require('tabStops').processText(str, {
				variable: function(data) {
					var newValue = resolver(data.token, data.name, data);
					if (newValue === null) {
						// try to find variable in resources
						newValue = res.getVariable(data.name);
					}
					
					if (newValue === null || _.isUndefined(newValue))
						// nothing found, return token itself
						newValue = data.token;
					return newValue;
				}
			});
		},
		
		/**
		 * Replaces '$' character in string assuming it might be escaped with '\'
		 * @param {String} str String where character should be replaced
		 * @param {String} value New value
		 * @return {String}
		 */
		replaceCounter: function(str, value, total) {
			var symbol = '$';
			// in case we received strings from Java, convert the to native strings
			str = String(str);
			value = String(value);
			
			if (/^\-?\d+$/.test(value)) {
				value = +value;
			}
			
			var that = this;
			
			return this.replaceUnescapedSymbol(str, symbol, function(str, symbol, pos, matchNum){
				if (str.charAt(pos + 1) == '{' || that.isNumeric(str.charAt(pos + 1)) ) {
					// it's a variable, skip it
					return false;
				}
				
				// replace sequense of $ symbols with padded number  
				var j = pos + 1;
				while(str.charAt(j) == '$' && str.charAt(j + 1) != '{') j++;
				var pad = j - pos;
				
				// get counter base
				var base = 0, decrement = false, m;
				if ((m = str.substr(j).match(/^@(\-?)(\d*)/))) {
					j += m[0].length;
					
					if (m[1]) {
						decrement = true;
					}
					
					base = parseInt(m[2] || 1, 10) - 1;
				}
				
				if (decrement && total && _.isNumber(value)) {
					value = total - value + 1;
				}
				
				value += base;
				
				return [str.substring(pos, j), that.zeroPadString(value + '', pad)];
			});
		},
		
		/**
		 * Check if string matches against <code>reTag</code> regexp. This 
		 * function may be used to test if provided string contains HTML tags
		 * @param {String} str
		 * @returns {Boolean}
		 */
		matchesTag: function(str) {
			return this.reTag.test(str || '');
		},
		
		/**
		 * Escapes special characters used in Emmet, like '$', '|', etc.
		 * Use this method before passing to actions like "Wrap with Abbreviation"
		 * to make sure that existing special characters won't be altered
		 * @param {String} text
		 * @return {String}
		 */
		escapeText: function(text) {
			return text.replace(/([\$\\])/g, '\\$1');
		},
		
		/**
		 * Unescapes special characters used in Emmet, like '$', '|', etc.
		 * @param {String} text
		 * @return {String}
		 */
		unescapeText: function(text) {
			return text.replace(/\\(.)/g, '$1');
		},
		
		/**
		 * Returns caret placeholder
		 * @returns {String}
		 */
		getCaretPlaceholder: function() {
			return _.isFunction(caretPlaceholder) 
				? caretPlaceholder.apply(this, arguments)
				: caretPlaceholder;
		},
		
		/**
		 * Sets new representation for carets in generated output
		 * @param {String} value New caret placeholder. Might be a 
		 * <code>Function</code>
		 */
		setCaretPlaceholder: function(value) {
			caretPlaceholder = value;
		},
		
		/**
		 * Returns line padding
		 * @param {String} line
		 * @return {String}
		 */
		getLinePadding: function(line) {
			return (line.match(/^(\s+)/) || [''])[0];
		},
		
		/**
		 * Helper function that returns padding of line of <code>pos</code>
		 * position in <code>content</code>
		 * @param {String} content
		 * @param {Number} pos
		 * @returns {String}
		 */
		getLinePaddingFromPosition: function(content, pos) {
			var lineRange = this.findNewlineBounds(content, pos);
			return this.getLinePadding(lineRange.substring(content));
		},
		
		/**
		 * Escape special regexp chars in string, making it usable for creating dynamic
		 * regular expressions
		 * @param {String} str
		 * @return {String}
		 */
		escapeForRegexp: function(str) {
			var specials = new RegExp("[.*+?|()\\[\\]{}\\\\]", "g"); // .*+?|()[]{}\
			return str.replace(specials, "\\$&");
		},
		
		/**
		 * Make decimal number look good: convert it to fixed precision end remove
		 * traling zeroes 
		 * @param {Number} num
		 * @param {Number} fracion Fraction numbers (default is 2)
		 * @return {String}
		 */
		prettifyNumber: function(num, fraction) {
			return num.toFixed(typeof fraction == 'undefined' ? 2 : fraction).replace(/\.?0+$/, '');
		},
		
		/**
		 * A simple mutable string shim, optimized for faster text concatenation
		 * @param {String} value Initial value
		 * @returns {StringBuilder}
		 */
		stringBuilder: function(value) {
			return new StringBuilder(value);
		},
		
		/**
		 * Replace substring of <code>str</code> with <code>value</code>
		 * @param {String} str String where to replace substring
		 * @param {String} value New substring value
		 * @param {Number} start Start index of substring to replace. May also
		 * be a <code>Range</code> object: in this case, the <code>end</code>
		 * argument is not required
		 * @param {Number} end End index of substring to replace. If ommited, 
		 * <code>start</code> argument is used
		 */
		replaceSubstring: function(str, value, start, end) {
			if (_.isObject(start) && 'end' in start) {
				end = start.end;
				start = start.start;
			}
			
			if (_.isString(end))
				end = start + end.length;
			
			if (_.isUndefined(end))
				end = start;
			
			if (start < 0 || start > str.length)
				return str;
			
			return str.substring(0, start) + value + str.substring(end);
		},
		
		/**
		 * Narrows down text range, adjusting selection to non-space characters
		 * @param {String} text
		 * @param {Number} start Starting range in <code>text</code> where 
		 * slection should be adjusted. Can also be any object that is accepted
		 * by <code>Range</code> class
		 * @return {Range}
		 */
		narrowToNonSpace: function(text, start, end) {
			var range = require('range').create(start, end);
			
			var reSpace = /[\s\n\r\u00a0]/;
			// narrow down selection until first non-space character
			while (range.start < range.end) {
				if (!reSpace.test(text.charAt(range.start)))
					break;
					
				range.start++;
			}
			
			while (range.end > range.start) {
				range.end--;
				if (!reSpace.test(text.charAt(range.end))) {
					range.end++;
					break;
				}
			}
			
			return range;
		},
		
		/**
		 * Find start and end index of text line for <code>from</code> index
		 * @param {String} text 
		 * @param {Number} from
		 */
		findNewlineBounds: function(text, from) {
			var len = text.length,
				start = 0,
				end = len - 1, 
				ch;

			
			// search left
			for (var i = from - 1; i > 0; i--) {
				ch = text.charAt(i);
				if (ch == '\n' || ch == '\r') {
					start = i + 1;
					break;
				}
			}
			// search right
			for (var j = from; j < len; j++) {
				ch = text.charAt(j);
				if (ch == '\n' || ch == '\r') {
					end = j;
					break;
				}
			}
			
			return require('range').create(start, end - start);
		},

		/**
		 * Deep merge of two or more objects. Taken from jQuery.extend()
		 */
		deepMerge: function() {
			var options, name, src, copy, copyIsArray, clone,
				target = arguments[0] || {},
				i = 1,
				length = arguments.length;


			// Handle case when target is a string or something (possible in deep copy)
			if (!_.isObject(target) && !_.isFunction(target)) {
				target = {};
			}

			for ( ; i < length; i++ ) {
				// Only deal with non-null/undefined values
				if ( (options = arguments[ i ]) !== null ) {
					// Extend the base object
					for ( name in options ) {
						src = target[ name ];
						copy = options[ name ];

						// Prevent never-ending loop
						if ( target === copy ) {
							continue;
						}

						// Recurse if we're merging plain objects or arrays
						if ( copy && ( _.isObject(copy) || (copyIsArray = _.isArray(copy)) ) ) {
							if ( copyIsArray ) {
								copyIsArray = false;
								clone = src && _.isArray(src) ? src : [];

							} else {
								clone = src && _.isObject(src) ? src : {};
							}

							// Never move original objects, clone them
							target[ name ] = this.deepMerge(clone, copy );

						// Don't bring in undefined values
						} else if ( copy !== undefined ) {
							target[ name ] = copy;
						}
					}
				}
			}

			// Return the modified object
			return target;
		}
	};
});
/**
 * Helper module to work with ranges
 * @constructor
 * @memberOf __rangeDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('range', function(require, _) {
	function cmp(a, b, op) {
		switch (op) {
			case 'eq':
			case '==':
				return a === b;
			case 'lt':
			case '<':
				return a < b;
			case 'lte':
			case '<=':
				return a <= b;
			case 'gt':
			case '>':
				return a > b;
			case 'gte':
			case '>=':
				return a >= b;
		}
	}
	
	
	/**
	 * @type Range
	 * @constructor
	 * @param {Object} start
	 * @param {Number} len
	 */
	function Range(start, len) {
		if (_.isObject(start) && 'start' in start) {
			// create range from object stub
			this.start = Math.min(start.start, start.end);
			this.end = Math.max(start.start, start.end);
		} else if (_.isArray(start)) {
			this.start = start[0];
			this.end = start[1];
		} else {
			len = _.isString(len) ? len.length : +len;
			this.start = start;
			this.end = start + len;
		}
	}
	
	Range.prototype = {
		length: function() {
			return Math.abs(this.end - this.start);
		},
		
		/**
		 * Returns <code>true</code> if passed range is equals to current one
		 * @param {Range} range
		 * @returns {Boolean}
		 */
		equal: function(range) {
			return this.cmp(range, 'eq', 'eq');
//			return this.start === range.start && this.end === range.end;
		},
		
		/**
		 * Shifts indexes position with passed <code>delat</code>
		 * @param {Number} delta
		 * @returns {Range} range itself
		 */
		shift: function(delta) {
			this.start += delta;
			this.end += delta;
			return this;
		},
		
		/**
		 * Check if two ranges are overlapped
		 * @param {Range} range
		 * @returns {Boolean}
		 */
		overlap: function(range) {
			return range.start <= this.end && range.end >= this.start;
		},
		
		/**
		 * Finds intersection of two ranges
		 * @param {Range} range
		 * @returns {Range} <code>null</code> if ranges does not overlap
		 */
		intersection: function(range) {
			if (this.overlap(range)) {
				var start = Math.max(range.start, this.start);
				var end = Math.min(range.end, this.end);
				return new Range(start, end - start);
			}
			
			return null;
		},
		
		/**
		 * Returns the union of the thow ranges.
		 * @param {Range} range
		 * @returns {Range} <code>null</code> if ranges are not overlapped
		 */
		union: function(range) {
			if (this.overlap(range)) {
				var start = Math.min(range.start, this.start);
				var end = Math.max(range.end, this.end);
				return new Range(start, end - start);
			}
			
			return null;
		},
		
		/**
		 * Returns a Boolean value that indicates whether a specified position 
		 * is in a given range.
		 * @param {Number} loc
		 */
		inside: function(loc) {
			return this.cmp(loc, 'lte', 'gt');
//			return this.start <= loc && this.end > loc;
		},
		
		/**
		 * Returns a Boolean value that indicates whether a specified position 
		 * is in a given range, but not equals bounds.
		 * @param {Number} loc
		 */
		contains: function(loc) {
			return this.cmp(loc, 'lt', 'gt');
		},
		
		/**
		 * Check if current range completely includes specified one
		 * @param {Range} r
		 * @returns {Boolean} 
		 */
		include: function(r) {
			return this.cmp(r, 'lte', 'gte');
//			return this.start <= r.start && this.end >= r.end;
		},
		
		/**
		 * Low-level comparision method
		 * @param {Number} loc
		 * @param {String} left Left comparison operator
		 * @param {String} right Right comaprison operator
		 */
		cmp: function(loc, left, right) {
			var a, b;
			if (loc instanceof Range) {
				a = loc.start;
				b = loc.end;
			} else {
				a = b = loc;
			}
			
			return cmp(this.start, a, left || '<=') && cmp(this.end, b, right || '>');
		},
		
		/**
		 * Returns substring of specified <code>str</code> for current range
		 * @param {String} str
		 * @returns {String}
		 */
		substring: function(str) {
			return this.length() > 0 
				? str.substring(this.start, this.end) 
				: '';
		},
		
		/**
		 * Creates copy of current range
		 * @returns {Range}
		 */
		clone: function() {
			return new Range(this.start, this.length());
		},
		
		/**
		 * @returns {Array}
		 */
		toArray: function() {
			return [this.start, this.end];
		},
		
		toString: function() {
			return '{' + this.start + ', ' + this.length() + '}';
		}
	};
	
	return {
		/**
		 * Creates new range object instance
		 * @param {Object} start Range start or array with 'start' and 'end'
		 * as two first indexes or object with 'start' and 'end' properties
		 * @param {Number} len Range length or string to produce range from
		 * @returns {Range}
		 * @memberOf emmet.range
		 */
		create: function(start, len) {
			if (_.isUndefined(start) || start === null)
				return null;
			
			if (start instanceof Range)
				return start;
			
			if (_.isObject(start) && 'start' in start && 'end' in start) {
				len = start.end - start.start;
				start = start.start;
			}
				
			return new Range(start, len);
		},
		
		/**
		 * <code>Range</code> object factory, the same as <code>this.create()</code>
		 * but last argument represents end of range, not length
		 * @returns {Range}
		 */
		create2: function(start, end) {
			if (_.isNumber(start) && _.isNumber(end)) {
				end -= start;
			}
			
			return this.create(start, end);
		}
	};
});/**
 * Utility module that provides ordered storage of function handlers. 
 * Many Emmet modules' functionality can be extended/overridden by custom
 * function. This modules provides unified storage of handler functions, their 
 * management and execution
 * 
 * @constructor
 * @memberOf __handlerListDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('handlerList', function(require, _) {
	/**
	 * @type HandlerList
	 * @constructor
	 */
	function HandlerList() {
		this._list = [];
	}
	
	HandlerList.prototype = {
		/**
		 * Adds function handler
		 * @param {Function} fn Handler
		 * @param {Object} options Handler options. Possible values are:<br><br>
		 * <b>order</b> : (<code>Number</code>) – order in handler list. Handlers
		 * with higher order value will be executed earlier.
		 */
		add: function(fn, options) {
			this._list.push(_.extend({order: 0}, options || {}, {fn: fn}));
		},
		
		/**
		 * Removes handler from list
		 * @param {Function} fn
		 */
		remove: function(fn) {
			this._list = _.without(this._list, _.find(this._list, function(item) {
				return item.fn === fn;
			}));
		},
		
		/**
		 * Returns ordered list of handlers. By default, handlers 
		 * with the same <code>order</code> option returned in reverse order, 
		 * i.e. the latter function was added into the handlers list, the higher 
		 * it will be in the returned array 
		 * @returns {Array}
		 */
		list: function() {
			return _.sortBy(this._list, 'order').reverse();
		},
		
		/**
		 * Returns ordered list of handler functions
		 * @returns {Array}
		 */
		listFn: function() {
			return _.pluck(this.list(), 'fn');
		},
		
		/**
		 * Executes handler functions in their designated order. If function
		 * returns <code>skipVal</code>, meaning that function was unable to 
		 * handle passed <code>args</code>, the next function will be executed
		 * and so on.
		 * @param {Object} skipValue If function returns this value, execute 
		 * next handler.
		 * @param {Array} args Arguments to pass to handler function
		 * @returns {Boolean} Whether any of registered handlers performed
		 * successfully  
		 */
		exec: function(skipValue, args) {
			args = args || [];
			var result = null;
			_.find(this.list(), function(h) {
				result = h.fn.apply(h, args);
				if (result !== skipValue)
					return true;
			});
			
			return result;
		}
	};
	
	return {
		/**
		 * Factory method that produces <code>HandlerList</code> instance
		 * @returns {HandlerList}
		 * @memberOf handlerList
		 */
		create: function() {
			return new HandlerList();
		}
	};
});/**
 * Helper class for convenient token iteration
 */
emmet.define('tokenIterator', function(require, _) {
	/**
	 * @type TokenIterator
	 * @param {Array} tokens
	 * @type TokenIterator
	 * @constructor
	 */
	function TokenIterator(tokens) {
		/** @type Array */
		this.tokens = tokens;
		this._position = 0;
		this.reset();
	}
	
	TokenIterator.prototype = {
		next: function() {
			if (this.hasNext()) {
				var token = this.tokens[++this._i];
				this._position = token.start;
				return token;
			}
			
			return null;
		},
		
		current: function() {
			return this.tokens[this._i];
		},
		
		position: function() {
			return this._position;
		},
		
		hasNext: function() {
			return this._i < this._il - 1;
		},
		
		reset: function() {
			this._i = -1;
			this._il = this.tokens.length;
		},
		
		item: function() {
			return this.tokens[this._i];
		},
		
		itemNext: function() {
			return this.tokens[this._i + 1];
		},
		
		itemPrev: function() {
			return this.tokens[this._i - 1];
		},
		
		nextUntil: function(type, callback) {
			var token;
			var test = _.isString(type) 
				? function(t){return t.type == type;} 
				: type;
			
			while ((token = this.next())) {
				if (callback)
					callback.call(this, token);
				if (test.call(this, token))
					break;
			}
		}
	};
	
	return {
		create: function(tokens) {
			return new TokenIterator(tokens);
		}
	};
});/**
 * A trimmed version of CodeMirror's StringStream module for string parsing
 */
emmet.define('stringStream', function(require, _) {
	/**
	 * @type StringStream
	 * @constructor
	 * @param {String} string
	 */
	function StringStream(string) {
		this.pos = this.start = 0;
		this.string = string;
	}
	
	StringStream.prototype = {
		/**
		 * Returns true only if the stream is at the end of the line.
		 * @returns {Boolean}
		 */
		eol: function() {
			return this.pos >= this.string.length;
		},
		
		/**
		 * Returns true only if the stream is at the start of the line
		 * @returns {Boolean}
		 */
		sol: function() {
			return this.pos === 0;
		},
		
		/**
		 * Returns the next character in the stream without advancing it. 
		 * Will return <code>undefined</code> at the end of the line.
		 * @returns {String}
		 */
		peek: function() {
			return this.string.charAt(this.pos);
		},
		
		/**
		 * Returns the next character in the stream and advances it.
		 * Also returns <code>undefined</code> when no more characters are available.
		 * @returns {String}
		 */
		next: function() {
			if (this.pos < this.string.length)
				return this.string.charAt(this.pos++);
		},
		
		/**
		 * match can be a character, a regular expression, or a function that
		 * takes a character and returns a boolean. If the next character in the
		 * stream 'matches' the given argument, it is consumed and returned.
		 * Otherwise, undefined is returned.
		 * @param {Object} match
		 * @returns {String}
		 */
		eat: function(match) {
			var ch = this.string.charAt(this.pos), ok;
			if (typeof match == "string")
				ok = ch == match;
			else
				ok = ch && (match.test ? match.test(ch) : match(ch));
			
			if (ok) {
				++this.pos;
				return ch;
			}
		},
		
		/**
		 * Repeatedly calls <code>eat</code> with the given argument, until it
		 * fails. Returns <code>true</code> if any characters were eaten.
		 * @param {Object} match
		 * @returns {Boolean}
		 */
		eatWhile: function(match) {
			var start = this.pos;
			while (this.eat(match)) {}
			return this.pos > start;
		},
		
		/**
		 * Shortcut for <code>eatWhile</code> when matching white-space.
		 * @returns {Boolean}
		 */
		eatSpace: function() {
			var start = this.pos;
			while (/[\s\u00a0]/.test(this.string.charAt(this.pos)))
				++this.pos;
			return this.pos > start;
		},
		
		/**
		 * Moves the position to the end of the line.
		 */
		skipToEnd: function() {
			this.pos = this.string.length;
		},
		
		/**
		 * Skips to the next occurrence of the given character, if found on the
		 * current line (doesn't advance the stream if the character does not
		 * occur on the line). Returns true if the character was found.
		 * @param {String} ch
		 * @returns {Boolean}
		 */
		skipTo: function(ch) {
			var found = this.string.indexOf(ch, this.pos);
			if (found > -1) {
				this.pos = found;
				return true;
			}
		},
		
		/**
		 * Skips to <code>close</code> character which is pair to <code>open</code>
		 * character, considering possible pair nesting. This function is used
		 * to consume pair of characters, like opening and closing braces
		 * @param {String} open
		 * @param {String} close
		 * @returns {Boolean} Returns <code>true</code> if pair was successfully
		 * consumed
		 */
		skipToPair: function(open, close) {
			var braceCount = 0, ch;
			var pos = this.pos, len = this.string.length;
			while (pos < len) {
				ch = this.string.charAt(pos++);
				if (ch == open) {
					braceCount++;
				} else if (ch == close) {
					braceCount--;
					if (braceCount < 1) {
						this.pos = pos;
						return true;
					}
				}
			}
			
			return false;
		},
		
		/**
		 * Backs up the stream n characters. Backing it up further than the
		 * start of the current token will cause things to break, so be careful.
		 * @param {Number} n
		 */
		backUp : function(n) {
			this.pos -= n;
		},
		
		/**
		 * Act like a multi-character <code>eat</code>—if <code>consume</code> is true or
		 * not given—or a look-ahead that doesn't update the stream position—if
		 * it is false. <code>pattern</code> can be either a string or a
		 * regular expression starting with ^. When it is a string,
		 * <code>caseInsensitive</code> can be set to true to make the match
		 * case-insensitive. When successfully matching a regular expression,
		 * the returned value will be the array returned by <code>match</code>,
		 * in case you need to extract matched groups.
		 * 
		 * @param {RegExp} pattern
		 * @param {Boolean} consume
		 * @param {Boolean} caseInsensitive
		 * @returns
		 */
		match: function(pattern, consume, caseInsensitive) {
			if (typeof pattern == "string") {
				var cased = caseInsensitive
					? function(str) {return str.toLowerCase();}
					: function(str) {return str;};
				
				if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
					if (consume !== false)
						this.pos += pattern.length;
					return true;
				}
			} else {
				var match = this.string.slice(this.pos).match(pattern);
				if (match && consume !== false)
					this.pos += match[0].length;
				return match;
			}
		},
		
		/**
		 * Get the string between the start of the current token and the 
		 * current stream position.
		 * @returns {String}
		 */
		current: function() {
			return this.string.slice(this.start, this.pos);
		}
	};
	
	return {
		create: function(string) {
			return new StringStream(string);
		}
	};
});/**
 * Parsed resources (snippets, abbreviations, variables, etc.) for Emmet.
 * Contains convenient method to get access for snippets with respect of 
 * inheritance. Also provides ability to store data in different vocabularies
 * ('system' and 'user') for fast and safe resource update
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * 
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('resources', function(require, _) {
	var VOC_SYSTEM = 'system';
	var VOC_USER = 'user';
	
	var cache = {};
		
	/** Regular expression for XML tag matching */
	var reTag = /^<(\w+\:?[\w\-]*)((?:\s+[\w\:\-]+\s*=\s*(['"]).*?\3)*)\s*(\/?)>/;
		
	var systemSettings = {};
	var userSettings = {};
	
	/** @type HandlerList List of registered abbreviation resolvers */
	var resolvers = require('handlerList').create();
	
	/**
	 * Normalizes caret plceholder in passed text: replaces | character with
	 * default caret placeholder
	 * @param {String} text
	 * @returns {String}
	 */
	function normalizeCaretPlaceholder(text) {
		var utils = require('utils');
		return utils.replaceUnescapedSymbol(text, '|', utils.getCaretPlaceholder());
	}
	
	function parseItem(name, value, type) {
		value = normalizeCaretPlaceholder(value);
		if (type == 'snippets') {
			return require('elements').create('snippet', value);
		}
		
		if (type == 'abbreviations') {
			return parseAbbreviation(name, value);
		}
	}
	
	/**
	 * Parses single abbreviation
	 * @param {String} key Abbreviation name
	 * @param {String} value Abbreviation value
	 * @return {Object}
	 */
	function parseAbbreviation(key, value) {
		key = require('utils').trim(key);
		var elements = require('elements');
		var m;
		if ((m = reTag.exec(value))) {
			return elements.create('element', m[1], m[2], m[4] == '/');
		} else {
			// assume it's reference to another abbreviation
			return elements.create('reference', value);
		}
	}
	
	/**
	 * Normalizes snippet key name for better fuzzy search
	 * @param {String} str
	 * @returns {String}
	 */
	function normalizeName(str) {
		return str.replace(/:$/, '').replace(/:/g, '-');
	}
	
	return {
		/**
		 * Sets new unparsed data for specified settings vocabulary
		 * @param {Object} data
		 * @param {String} type Vocabulary type ('system' or 'user')
		 * @memberOf resources
		 */
		setVocabulary: function(data, type) {
			cache = {};
			if (type == VOC_SYSTEM)
				systemSettings = data;
			else
				userSettings = data;
		},
		
		/**
		 * Returns resource vocabulary by its name
		 * @param {String} name Vocabulary name ('system' or 'user')
		 * @return {Object}
		 */
		getVocabulary: function(name) {
			return name == VOC_SYSTEM ? systemSettings : userSettings;
		},
		
		/**
		 * Returns resource (abbreviation, snippet, etc.) matched for passed 
		 * abbreviation
		 * @param {AbbreviationNode} node
		 * @param {String} syntax
		 * @returns {Object}
		 */
		getMatchedResource: function(node, syntax) {
			return resolvers.exec(null, _.toArray(arguments)) 
				|| this.findSnippet(syntax, node.name());
		},
		
		/**
		 * Returns variable value
		 * @return {String}
		 */
		getVariable: function(name) {
			return (this.getSection('variables') || {})[name];
		},
		
		/**
		 * Store runtime variable in user storage
		 * @param {String} name Variable name
		 * @param {String} value Variable value
		 */
		setVariable: function(name, value){
			var voc = this.getVocabulary('user') || {};
			if (!('variables' in voc))
				voc.variables = {};
				
			voc.variables[name] = value;
			this.setVocabulary(voc, 'user');
		},
		
		/**
		 * Check if there are resources for specified syntax
		 * @param {String} syntax
		 * @return {Boolean}
		 */
		hasSyntax: function(syntax) {
			return syntax in this.getVocabulary(VOC_USER) 
				|| syntax in this.getVocabulary(VOC_SYSTEM);
		},
		
		/**
		 * Registers new abbreviation resolver.
		 * @param {Function} fn Abbreviation resolver which will receive 
		 * abbreviation as first argument and should return parsed abbreviation
		 * object if abbreviation has handled successfully, <code>null</code>
		 * otherwise
		 * @param {Object} options Options list as described in 
		 * {@link HandlerList#add()} method
		 */
		addResolver: function(fn, options) {
			resolvers.add(fn, options);
		},
		
		removeResolver: function(fn) {
			resolvers.remove(fn);
		},
		
		/**
		 * Returns actual section data, merged from both
		 * system and user data
		 * @param {String} name Section name (syntax)
		 * @param {String} ...args Subsections
		 * @returns
		 */
		getSection: function(name) {
			if (!name)
				return null;
			
			if (!(name in cache)) {
				cache[name] = require('utils').deepMerge({}, systemSettings[name], userSettings[name]);
			}
			
			var data = cache[name], subsections = _.rest(arguments), key;
			while (data && (key = subsections.shift())) {
				if (key in data) {
					data = data[key];
				} else {
					return null;
				}
			}
			
			return data;
		},
		
		/**
		 * Recursively searches for a item inside top level sections (syntaxes)
		 * with respect of `extends` attribute
		 * @param {String} topSection Top section name (syntax)
		 * @param {String} subsection Inner section name
		 * @returns {Object}
		 */
		findItem: function(topSection, subsection) {
			var data = this.getSection(topSection);
			while (data) {
				if (subsection in data)
					return data[subsection];
				
				data = this.getSection(data['extends']);
			}
		},
		
		/**
		 * Recursively searches for a snippet definition inside syntax section.
		 * Definition is searched inside `snippets` and `abbreviations` 
		 * subsections  
		 * @param {String} syntax Top-level section name (syntax)
		 * @param {String} name Snippet name
		 * @returns {Object}
		 */
		findSnippet: function(syntax, name, memo) {
            
			if (!syntax || !name)
				return null;
			
			memo = memo || [];
			
			var names = [name];
			// create automatic aliases to properties with colons,
			// e.g. pos-a == pos:a
			if (~name.indexOf('-'))
				names.push(name.replace(/\-/g, ':'));
			
			var data = this.getSection(syntax), matchedItem = null;
			_.find(['snippets', 'abbreviations'], function(sectionName) {
				var data = this.getSection(syntax, sectionName);
				if (data) {
					return _.find(names, function(n) {
						if (data[n])
							return matchedItem = parseItem(n, data[n], sectionName);
					});
				}
			}, this);
			
			memo.push(syntax);
			if (!matchedItem && data['extends'] && !_.include(memo, data['extends'])) {
				// try to find item in parent syntax section
				return this.findSnippet(data['extends'], name, memo);
			}
            
			return matchedItem;
		},
		
		/**
		 * Performs fuzzy search of snippet definition
		 * @param {String} syntax Top-level section name (syntax)
		 * @param {String} name Snippet name
		 * @returns
		 */
		fuzzyFindSnippet: function(syntax, name, minScore) {
			minScore = minScore || 0.3;
			
			var payload = this.getAllSnippets(syntax);
			var sc = require('string-score');
			
			name = normalizeName(name);
			var scores = _.map(payload, function(value, key) {
				return {
					key: key,
					score: sc.score(value.nk, name, 0.1)
				};
			});
			
			var result = _.last(_.sortBy(scores, 'score'));
			if (result && result.score >= minScore) {
				var k = result.key;
				return payload[k].parsedValue;
//				return parseItem(k, payload[k].value, payload[k].type);
			}
		},
		
		/**
		 * Returns plain dictionary of all available abbreviations and snippets
		 * for specified syntax with respect of inheritance
		 * @param {String} syntax
		 * @returns {Object}
		 */
		getAllSnippets: function(syntax) {
			var cacheKey = 'all-' + syntax;
			if (!cache[cacheKey]) {
				var stack = [], sectionKey = syntax;
				var memo = [];
				
				do {
					var section = this.getSection(sectionKey);
					if (!section)
						break;
					
					_.each(['snippets', 'abbreviations'], function(sectionName) {
						var stackItem = {};
						_.each(section[sectionName] || null, function(v, k) {
							stackItem[k] = {
								nk: normalizeName(k),
								value: v,
								parsedValue: parseItem(k, v, sectionName),
								type: sectionName
							};
						});
						
						stack.push(stackItem);
					});
					
					memo.push(sectionKey);
					sectionKey = section['extends'];
				} while (sectionKey && !_.include(memo, sectionKey));
				
				
				cache[cacheKey] = _.extend.apply(_, stack.reverse());
			}
			
			return cache[cacheKey];
		}
	};
});/**
 * Module describes and performs Emmet actions. The actions themselves are
 * defined in <i>actions</i> folder
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('actions', function(require, _) {
	var actions = {};
	
	/**
	 * “Humanizes” action name, makes it more readable for people
	 * @param {String} name Action name (like 'expand_abbreviation')
	 * @return Humanized name (like 'Expand Abbreviation')
	 */
	function humanizeActionName(name) {
		return require('utils').trim(name.charAt(0).toUpperCase() 
			+ name.substring(1).replace(/_[a-z]/g, function(str) {
				return ' ' + str.charAt(1).toUpperCase();
			}));
	}
	
	return {
		/**
		 * Registers new action
		 * @param {String} name Action name
		 * @param {Function} fn Action function
		 * @param {Object} options Custom action options:<br>
		 * <b>label</b> : (<code>String</code>) – Human-readable action name. 
		 * May contain '/' symbols as submenu separators<br>
		 * <b>hidden</b> : (<code>Boolean</code>) – Indicates whether action
		 * should be displayed in menu (<code>getMenu()</code> method)
		 * 
		 * @memberOf actions
		 */
		add: function(name, fn, options) {
			name = name.toLowerCase();
			options = options || {};
			if (!options.label) {
				options.label = humanizeActionName(name);
			}
			
			actions[name] = {
				name: name,
				fn: fn,
				options: options
			};
		},
		
		/**
		 * Returns action object
		 * @param {String} name Action name
		 * @returns {Object}
		 */
		get: function(name) {
			return actions[name.toLowerCase()];
		},
		
		/**
		 * Runs Emmet action. For list of available actions and their
		 * arguments see <i>actions</i> folder.
		 * @param {String} name Action name 
		 * @param {Array} args Additional arguments. It may be array of arguments
		 * or inline arguments. The first argument should be <code>IEmmetEditor</code> instance
		 * @returns {Boolean} Status of performed operation, <code>true</code>
		 * means action was performed successfully.
		 * @example
		 * emmet.require('actions').run('expand_abbreviation', editor);  
		 * emmet.require('actions').run('wrap_with_abbreviation', [editor, 'div']);  
		 */
		run: function(name, args) {
			if (!_.isArray(args)) {
				args = _.rest(arguments);
			}
			
			var action = this.get(name);
			if (action) {
				return action.fn.apply(emmet, args);
			} else {
				emmet.log('Action "%s" is not defined', name);
				return false;
			}
		},
		
		/**
		 * Returns all registered actions as object
		 * @returns {Object}
		 */
		getAll: function() {
			return actions;
		},
		
		/**
		 * Returns all registered actions as array
		 * @returns {Array}
		 */
		getList: function() {
			return _.values(this.getAll());
		},
		
		/**
		 * Returns actions list as structured menu. If action has <i>label</i>,
		 * it will be splitted by '/' symbol into submenus (for example: 
		 * CSS/Reflect Value) and grouped with other items
		 * @param {Array} skipActions List of action identifiers that should be 
		 * skipped from menu
		 * @returns {Array}
		 */
		getMenu: function(skipActions) {
			var result = [];
			skipActions = skipActions || [];
			_.each(this.getList(), function(action) {
				if (action.options.hidden || _.include(skipActions, action.name))
					return;
				
				var actionName = humanizeActionName(action.name);
				var ctx = result;
				if (action.options.label) {
					var parts = action.options.label.split('/');
					actionName = parts.pop();
					
					// create submenus, if needed
					var menuName, submenu;
					while ((menuName = parts.shift())) {
						submenu = _.find(ctx, function(item) {
							return item.type == 'submenu' && item.name == menuName;
						});
						
						if (!submenu) {
							submenu = {
								name: menuName,
								type: 'submenu',
								items: []
							};
							ctx.push(submenu);
						}
						
						ctx = submenu.items;
					}
				}
				
				ctx.push({
					type: 'action',
					name: action.name,
					label: actionName
				});
			});
			
			return result;
		},

		/**
		 * Returns action name associated with menu item title
		 * @param {String} title
		 * @returns {String}
		 */
		getActionNameForMenuTitle: function(title, menu) {
			var item = null;
			_.find(menu || this.getMenu(), function(val) {
				if (val.type == 'action') {
					if (val.label == title || val.name == title) {
						return item = val.name;
					}
				} else {
					return item = this.getActionNameForMenuTitle(title, val.items);
				}
			}, this);
			
			return item || null;
		}
	};
});/**
 * Output profile module.
 * Profile defines how XHTML output data should look like
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('profile', function(require, _) {
	var profiles = {};
	
	var defaultProfile = {
		tag_case: 'asis',
		attr_case: 'asis',
		attr_quotes: 'double',
		
		// each tag on new line
		tag_nl: 'decide',
		
		// with tag_nl === true, defines if leaf node (e.g. node with no children)
		// should have formatted line breaks
		tag_nl_leaf: false,
		
		place_cursor: true,
		
		// indent tags
		indent: true,
		
		// how many inline elements should be to force line break 
		// (set to 0 to disable)
		inline_break: 3,
		
		// use self-closing style for writing empty elements, e.g. <br /> or <br>
		self_closing_tag: 'xhtml',
		
		// Profile-level output filters, re-defines syntax filters 
		filters: '',
		
		// Additional filters applied to abbreviation.
		// Unlike "filters", this preference doesn't override default filters
		// but add the instead every time given profile is chosen
		extraFilters: ''
	};
	
	/**
	 * @constructor
	 * @type OutputProfile
	 * @param {Object} options
	 */
	function OutputProfile(options) {
		_.extend(this, defaultProfile, options);
	}
	
	OutputProfile.prototype = {
		/**
		 * Transforms tag name case depending on current profile settings
		 * @param {String} name String to transform
		 * @returns {String}
		 */
		tagName: function(name) {
			return stringCase(name, this.tag_case);
		},
		
		/**
		 * Transforms attribute name case depending on current profile settings 
		 * @param {String} name String to transform
		 * @returns {String}
		 */
		attributeName: function(name) {
			return stringCase(name, this.attr_case);
		},
		
		/**
		 * Returns quote character for current profile
		 * @returns {String}
		 */
		attributeQuote: function() {
			return this.attr_quotes == 'single' ? "'" : '"';
		},
		
		/**
		 * Returns self-closing tag symbol for current profile
		 * @returns {String}
		 */
		selfClosing: function() {
			if (this.self_closing_tag == 'xhtml')
				return ' /';
			
			if (this.self_closing_tag === true)
				return '/';
			
			return '';
		},
		
		/**
		 * Returns cursor token based on current profile settings
		 * @returns {String}
		 */
		cursor: function() {
			return this.place_cursor ? require('utils').getCaretPlaceholder() : '';
		}
	};
	
	/**
	 * Helper function that converts string case depending on 
	 * <code>caseValue</code> 
	 * @param {String} str String to transform
	 * @param {String} caseValue Case value: can be <i>lower</i>, 
	 * <i>upper</i> and <i>leave</i>
	 * @returns {String}
	 */
	function stringCase(str, caseValue) {
		switch (String(caseValue || '').toLowerCase()) {
			case 'lower':
				return str.toLowerCase();
			case 'upper':
				return str.toUpperCase();
		}
		
		return str;
	}
	
	/**
	 * Creates new output profile
	 * @param {String} name Profile name
	 * @param {Object} options Profile options
	 */
	function createProfile(name, options) {
		return profiles[name.toLowerCase()] = new OutputProfile(options);
	}
	
	function createDefaultProfiles() {
		createProfile('xhtml');
		createProfile('html', {self_closing_tag: false});
		createProfile('xml', {self_closing_tag: true, tag_nl: true});
		createProfile('plain', {tag_nl: false, indent: false, place_cursor: false});
		createProfile('line', {tag_nl: false, indent: false, extraFilters: 's'});
	}
	
	createDefaultProfiles();
	
	return  {
		/**
		 * Creates new output profile and adds it into internal dictionary
		 * @param {String} name Profile name
		 * @param {Object} options Profile options
		 * @memberOf emmet.profile
		 * @returns {Object} New profile
		 */
		create: function(name, options) {
			if (arguments.length == 2)
				return createProfile(name, options);
			else
				// create profile object only
				return new OutputProfile(_.defaults(name || {}, defaultProfile));
		},
		
		/**
		 * Returns profile by its name. If profile wasn't found, returns
		 * 'plain' profile
		 * @param {String} name Profile name. Might be profile itself
		 * @param {String} syntax. Optional. Current editor syntax. If defined,
		 * profile is searched in resources first, then in predefined profiles
		 * @returns {Object}
		 */
		get: function(name, syntax) {
			if (!name && syntax) {
				// search in user resources first
				var profile = require('resources').findItem(syntax, 'profile');
				if (profile) {
					name = profile;
				}
			}
			
			if (!name) {
				return profiles.plain;
			}
			
			if (name instanceof OutputProfile) {
				return name;
			}
			
			if (_.isString(name) && name.toLowerCase() in profiles) {
				return profiles[name.toLowerCase()];
			}
			
			return this.create(name);
		},
		
		/**
		 * Deletes profile with specified name
		 * @param {String} name Profile name
		 */
		remove: function(name) {
			name = (name || '').toLowerCase();
			if (name in profiles)
				delete profiles[name];
		},
		
		/**
		 * Resets all user-defined profiles
		 */
		reset: function() {
			profiles = {};
			createDefaultProfiles();
		},
		
		/**
		 * Helper function that converts string case depending on 
		 * <code>caseValue</code> 
		 * @param {String} str String to transform
		 * @param {String} caseValue Case value: can be <i>lower</i>, 
		 * <i>upper</i> and <i>leave</i>
		 * @returns {String}
		 */
		stringCase: stringCase
	};
});/**
 * Utility module used to prepare text for pasting into back-end editor
 * @param {Function} require
 * @param {Underscore} _
 * @author Sergey Chikuyonok (serge.che@gmail.com) <http://chikuyonok.ru>
 */
emmet.define('editorUtils', function(require, _) {
	return  {
		/**
		 * Check if cursor is placed inside XHTML tag
		 * @param {String} html Contents of the document
		 * @param {Number} caretPos Current caret position inside tag
		 * @return {Boolean}
		 */
		isInsideTag: function(html, caretPos) {
			var reTag = /^<\/?\w[\w\:\-]*.*?>/;
			
			// search left to find opening brace
			var pos = caretPos;
			while (pos > -1) {
				if (html.charAt(pos) == '<') 
					break;
				pos--;
			}
			
			if (pos != -1) {
				var m = reTag.exec(html.substring(pos));
				if (m && caretPos > pos && caretPos < pos + m[0].length)
					return true;
			}
			
			return false;
		},
		
		/**
		 * Sanitizes incoming editor data and provides default values for
		 * output-specific info
		 * @param {IEmmetEditor} editor
		 * @param {String} syntax
		 * @param {String} profile
		 */
		outputInfo: function(editor, syntax, profile) {
			// most of this code makes sense for Java/Rhino environment
			// because string that comes from Java are not actually JS string
			// but Java String object so the have to be explicitly converted
			// to native string
			profile = profile || editor.getProfileName();
			return  {
				/** @memberOf outputInfo */
				syntax: String(syntax || editor.getSyntax()),
				profile: profile || null,
				content: String(editor.getContent())
			};
		},
		
		/**
		 * Unindent content, thus preparing text for tag wrapping
		 * @param {IEmmetEditor} editor Editor instance
		 * @param {String} text
		 * @return {String}
		 */
		unindent: function(editor, text) {
			return require('utils').unindentString(text, this.getCurrentLinePadding(editor));
		},
		
		/**
		 * Returns padding of current editor's line
		 * @param {IEmmetEditor} Editor instance
		 * @return {String}
		 */
		getCurrentLinePadding: function(editor) {
			return require('utils').getLinePadding(editor.getCurrentLine());
		}
	};
});
/**
 * Utility methods for Emmet actions
 * @param {Function} require
 * @param {Underscore} _
 * @author Sergey Chikuyonok (serge.che@gmail.com) <http://chikuyonok.ru>
 */
emmet.define('actionUtils', function(require, _) {
	return {
		mimeTypes: {
			'gif' : 'image/gif',
			'png' : 'image/png',
			'jpg' : 'image/jpeg',
			'jpeg': 'image/jpeg',
			'svg' : 'image/svg+xml',
			'html': 'text/html',
			'htm' : 'text/html'
		},
		
		/**
		 * Extracts abbreviations from text stream, starting from the end
		 * @param {String} str
		 * @return {String} Abbreviation or empty string
		 * @memberOf emmet.actionUtils
		 */
		extractAbbreviation: function(str) {
			var curOffset = str.length;
			var startIndex = -1;
			var groupCount = 0;
			var braceCount = 0;
			var textCount = 0;
			
			var utils = require('utils');
			var parser = require('abbreviationParser');
			
			while (true) {
				curOffset--;
				if (curOffset < 0) {
					// moved to the beginning of the line
					startIndex = 0;
					break;
				}
				
				var ch = str.charAt(curOffset);
				
				if (ch == ']') {
					braceCount++;
				} else if (ch == '[') {
					if (!braceCount) { // unexpected brace
						startIndex = curOffset + 1;
						break;
					}
					braceCount--;
				} else if (ch == '}') {
					textCount++;
				} else if (ch == '{') {
					if (!textCount) { // unexpected brace
						startIndex = curOffset + 1;
						break;
					}
					textCount--;
				} else if (ch == ')') {
					groupCount++;
				} else if (ch == '(') {
					if (!groupCount) { // unexpected brace
						startIndex = curOffset + 1;
						break;
					}
					groupCount--;
				} else {
					if (braceCount || textCount) 
						// respect all characters inside attribute sets or text nodes
						continue;
					else if (!parser.isAllowedChar(ch) || (ch == '>' && utils.endsWithTag(str.substring(0, curOffset + 1)))) {
						// found stop symbol
						startIndex = curOffset + 1;
						break;
					}
				}
			}
			
			if (startIndex != -1 && !textCount && !braceCount && !groupCount) 
				// found something, remove some invalid symbols from the 
				// beginning and return abbreviation
				return str.substring(startIndex).replace(/^[\*\+\>\^]+/, '');
			else
				return '';
		},
		
		/**
		 * Gets image size from image byte stream.
		 * @author http://romeda.org/rePublish/
		 * @param {String} stream Image byte stream (use <code>IEmmetFile.read()</code>)
		 * @return {Object} Object with <code>width</code> and <code>height</code> properties
		 */
		getImageSize: function(stream) {
			var pngMagicNum = "\211PNG\r\n\032\n",
				jpgMagicNum = "\377\330",
				gifMagicNum = "GIF8",
				pos = 0,
				nextByte = function() {
					return stream.charCodeAt(pos++);
				};
		
			if (stream.substr(0, 8) === pngMagicNum) {
				// PNG. Easy peasy.
				pos = stream.indexOf('IHDR') + 4;
			
				return {
					width:  (nextByte() << 24) | (nextByte() << 16) | (nextByte() <<  8) | nextByte(),
					height: (nextByte() << 24) | (nextByte() << 16) | (nextByte() <<  8) | nextByte()
				};
			
			} else if (stream.substr(0, 4) === gifMagicNum) {
				pos = 6;
			
				return {
					width:  nextByte() | (nextByte() << 8),
					height: nextByte() | (nextByte() << 8)
				};
			
			} else if (stream.substr(0, 2) === jpgMagicNum) {
				pos = 2;
			
				var l = stream.length;
				while (pos < l) {
					if (nextByte() != 0xFF) return;
				
					var marker = nextByte();
					if (marker == 0xDA) break;
				
					var size = (nextByte() << 8) | nextByte();
				
					if (marker >= 0xC0 && marker <= 0xCF && !(marker & 0x4) && !(marker & 0x8)) {
						pos += 1;
						return {
							height: (nextByte() << 8) | nextByte(),
							width: (nextByte() << 8) | nextByte()
						};
				
					} else {
						pos += size - 2;
					}
				}
			}
		},
		
		/**
		 * Captures context XHTML element from editor under current caret position.
		 * This node can be used as a helper for abbreviation extraction
		 * @param {IEmmetEditor} editor
		 * @returns {Object}
		 */
		captureContext: function(editor) {
			var allowedSyntaxes = {'html': 1, 'xml': 1, 'xsl': 1};
			var syntax = String(editor.getSyntax());
			if (syntax in allowedSyntaxes) {
				var content = String(editor.getContent());
				var tag = require('htmlMatcher').find(content, editor.getCaretPos());
				
				if (tag && tag.type == 'tag') {
					var startTag = tag.open;
					var contextNode = {
						name: startTag.name,
						attributes: []
					};
					
					// parse attributes
					var tagTree = require('xmlEditTree').parse(startTag.range.substring(content));
					if (tagTree) {
						contextNode.attributes = _.map(tagTree.getAll(), function(item) {
							return {
								name: item.name(),
								value: item.value()
							};
						});
					}
					
					return contextNode;
				}
			}
			
			return null;
		},
		
		/**
		 * Find expression bounds in current editor at caret position. 
		 * On each character a <code>fn</code> function will be called and must 
		 * return <code>true</code> if current character meets requirements, 
		 * <code>false</code> otherwise
		 * @param {IEmmetEditor} editor
		 * @param {Function} fn Function to test each character of expression
		 * @return {Range}
		 */
		findExpressionBounds: function(editor, fn) {
			var content = String(editor.getContent());
			var il = content.length;
			var exprStart = editor.getCaretPos() - 1;
			var exprEnd = exprStart + 1;
				
			// start by searching left
			while (exprStart >= 0 && fn(content.charAt(exprStart), exprStart, content)) exprStart--;
			
			// then search right
			while (exprEnd < il && fn(content.charAt(exprEnd), exprEnd, content)) exprEnd++;
			
			if (exprEnd > exprStart) {
				return require('range').create([++exprStart, exprEnd]);
			}
		},
		
		/**
		 * @param {IEmmetEditor} editor
		 * @param {Object} data
		 * @returns {Boolean}
		 */
		compoundUpdate: function(editor, data) {
			if (data) {
				var sel = editor.getSelectionRange();
				editor.replaceContent(data.data, data.start, data.end, true);
				editor.createSelection(data.caret, data.caret + sel.end - sel.start);
				return true;
			}
			
			return false;
		},
		
		/**
		 * Common syntax detection method for editors that doesn’t provide any
		 * info about current syntax scope. 
		 * @param {IEmmetEditor} editor Current editor
		 * @param {String} hint Any syntax hint that editor can provide 
		 * for syntax detection. Default is 'html'
		 * @returns {String} 
		 */
		detectSyntax: function(editor, hint) {
			var syntax = hint || 'html';
			
			if (!require('resources').hasSyntax(syntax)) {
				syntax = 'html';
			}
			
			if (syntax == 'html' && (this.isStyle(editor) || this.isInlineCSS(editor))) {
				syntax = 'css';
			}
			
			return syntax;
		},
		
		/**
		 * Common method for detecting output profile
		 * @param {IEmmetEditor} editor
		 * @returns {String}
		 */
		detectProfile: function(editor) {
			var syntax = editor.getSyntax();
			
			// get profile from syntax definition
			var profile = require('resources').findItem(syntax, 'profile');
			if (profile) {
				return profile;
			}
			
			switch(syntax) {
				case 'xml':
				case 'xsl':
					return 'xml';
				case 'css':
					if (this.isInlineCSS(editor)) {
						return 'line';
					}
					break;
				case 'html':
					profile = require('resources').getVariable('profile');
					if (!profile) { // no forced profile, guess from content
						// html or xhtml?
						profile = this.isXHTML(editor) ? 'xhtml': 'html';
					}

					return profile;
			}

			return 'xhtml';
		},
		
		/**
		 * Tries to detect if current document is XHTML one.
		 * @param {IEmmetEditor} editor
		 * @returns {Boolean}
		 */
		isXHTML: function(editor) {
			return editor.getContent().search(/<!DOCTYPE[^>]+XHTML/i) != -1;
		},
		
		/**
		 * Check if current caret position is inside &lt;style&gt; tag
		 * @param {IEmmetEditor} editor
		 * @returns
		 */
		isStyle: function(editor) {
			var content = String(editor.getContent());
			var caretPos = editor.getCaretPos();
			var tag = require('htmlMatcher').tag(content, caretPos);
			return tag && tag.open.name.toLowerCase() == 'style' 
				&& tag.innerRange.cmp(caretPos, 'lte', 'gte');
		},
		
		/**
		 * Check if current caret position is inside "style" attribute of HTML
		 * element
		 * @param {IEmmetEditor} editor
		 * @returns {Boolean}
		 */
		isInlineCSS: function(editor) {
			var content = String(editor.getContent());
			var caretPos = editor.getCaretPos();
			var tree = require('xmlEditTree').parseFromPosition(content, caretPos, true);
			if (tree) {
				var attr = tree.itemFromPosition(caretPos, true);
				return attr && attr.name().toLowerCase() == 'style' 
					&& attr.valueRange(true).cmp(caretPos, 'lte', 'gte');
			}
            
            return false;
		}
	};
});/**
 * Utility functions to work with <code>AbbreviationNode</code> as HTML element
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('abbreviationUtils', function(require, _) {
	return {
		/**
		 * Test if passed node is unary (no closing tag)
		 * @param {AbbreviationNode} node
		 * @return {Boolean}
		 */
		isUnary: function(node) {
			if (node.children.length || node._text || this.isSnippet(node)) {
				return false;
			}
			
			var r = node.matchedResource();
			return r && r.is_empty;
		},
		
		/**
		 * Test if passed node is inline-level (like &lt;strong&gt;, &lt;img&gt;)
		 * @param {AbbreviationNode} node
		 * @return {Boolean}
		 */
		isInline: function(node) {
			return node.isTextNode() 
				|| !node.name() 
				|| require('tagName').isInlineLevel(node.name());
		},
		
		/**
		 * Test if passed node is block-level
		 * @param {AbbreviationNode} node
		 * @return {Boolean}
		 */
		isBlock: function(node) {
			return this.isSnippet(node) || !this.isInline(node);
		},
		
		/**
		 * Test if given node is a snippet
		 * @param {AbbreviationNode} node
		 * @return {Boolean}
		 */
		isSnippet: function(node) {
			return require('elements').is(node.matchedResource(), 'snippet');
		},
		
		/**
		 * This function tests if passed node content contains HTML tags. 
		 * This function is mostly used for output formatting
		 * @param {AbbreviationNode} node
		 * @returns {Boolean}
		 */
		hasTagsInContent: function(node) {
			return require('utils').matchesTag(node.content);
		},
		
		/**
		 * Test if current element contains block-level children
		 * @param {AbbreviationNode} node
		 * @return {Boolean}
		 */
		hasBlockChildren: function(node) {
			return (this.hasTagsInContent(node) && this.isBlock(node)) 
				|| _.any(node.children, function(child) {
					return this.isBlock(child);
				}, this);
		},
		
		/**
		 * Utility function that inserts content instead of <code>${child}</code>
		 * variables on <code>text</code>
		 * @param {String} text Text where child content should be inserted
		 * @param {String} childContent Content to insert
		 * @param {Object} options
		 * @returns {String
		 */
		insertChildContent: function(text, childContent, options) {
			options = _.extend({
				keepVariable: true,
				appendIfNoChild: true
			}, options || {});
			
			var childVariableReplaced = false;
			var utils = require('utils');
			text = utils.replaceVariables(text, function(variable, name, data) {
				var output = variable;
				if (name == 'child') {
					// add correct indentation
					output = utils.padString(childContent, utils.getLinePaddingFromPosition(text, data.start));
					childVariableReplaced = true;
					if (options.keepVariable)
						output += variable;
				}
				
				return output;
			});
			
			if (!childVariableReplaced && options.appendIfNoChild) {
				text += childContent;
			}
			
			return text;
		}
	};
});/**
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 */
emmet.define('base64', function(require, _) {
	var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
	
	return {
		/**
		 * Encodes data using base64 algorithm
		 * @author Tyler Akins (http://rumkin.com)
		 * @param {String} input
		 * @returns {String}
		 * @memberOf emmet.base64
		 */
		encode : function(input) {
			var output = [];
			var chr1, chr2, chr3, enc1, enc2, enc3, enc4, cdp1, cdp2, cdp3;
			var i = 0, il = input.length, b64 = chars;

			while (i < il) {

				cdp1 = input.charCodeAt(i++);
				cdp2 = input.charCodeAt(i++);
				cdp3 = input.charCodeAt(i++);

				chr1 = cdp1 & 0xff;
				chr2 = cdp2 & 0xff;
				chr3 = cdp3 & 0xff;

				enc1 = chr1 >> 2;
				enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
				enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
				enc4 = chr3 & 63;

				if (isNaN(cdp2)) {
					enc3 = enc4 = 64;
				} else if (isNaN(cdp3)) {
					enc4 = 64;
				}

				output.push(b64.charAt(enc1) + b64.charAt(enc2) + b64.charAt(enc3) + b64.charAt(enc4));
			}

			return output.join('');
		},

		/**
		 * Decodes string using MIME base64 algorithm
		 * 
		 * @author Tyler Akins (http://rumkin.com)
		 * @param {String} data
		 * @return {String}
		 */
		decode : function(data) {
			var o1, o2, o3, h1, h2, h3, h4, bits, i = 0, ac = 0, tmpArr = [];
			var b64 = chars, il = data.length;

			if (!data) {
				return data;
			}

			data += '';

			do { // unpack four hexets into three octets using index points in b64
				h1 = b64.indexOf(data.charAt(i++));
				h2 = b64.indexOf(data.charAt(i++));
				h3 = b64.indexOf(data.charAt(i++));
				h4 = b64.indexOf(data.charAt(i++));

				bits = h1 << 18 | h2 << 12 | h3 << 6 | h4;

				o1 = bits >> 16 & 0xff;
				o2 = bits >> 8 & 0xff;
				o3 = bits & 0xff;

				if (h3 == 64) {
					tmpArr[ac++] = String.fromCharCode(o1);
				} else if (h4 == 64) {
					tmpArr[ac++] = String.fromCharCode(o1, o2);
				} else {
					tmpArr[ac++] = String.fromCharCode(o1, o2, o3);
				}
			} while (i < il);

			return tmpArr.join('');
		}
	};
});/**
 * HTML matcher: takes string and searches for HTML tag pairs for given position 
 * 
 * Unlike “classic” matchers, it parses content from the specified 
 * position, not from the start, so it may work even outside HTML documents
 * (for example, inside strings of programming languages like JavaScript, Python 
 * etc.)
 * @constructor
 * @memberOf __htmlMatcherDefine
 */
emmet.define('htmlMatcher', function(require, _) {
	// Regular Expressions for parsing tags and attributes
	var reOpenTag = /^<([\w\:\-]+)((?:\s+[\w\-:]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)>/;
	var reCloseTag = /^<\/([\w\:\-]+)[^>]*>/;
	
	function openTag(i, match) {
		return {
			name: match[1],
			selfClose: !!match[3],
			/** @type Range */
			range: require('range').create(i, match[0]),
			type: 'open'
		};
	}
	
	function closeTag(i, match) {
		return {
			name: match[1],
			/** @type Range */
			range: require('range').create(i, match[0]),
			type: 'close'
		};
	}
	
	function comment(i, match) {
		return {
			/** @type Range */
			range: require('range').create(i, _.isNumber(match) ? match - i : match[0]),
			type: 'comment'
		};
	}
	
	/**
	 * Creates new tag matcher session
	 * @param {String} text
	 */
	function createMatcher(text) {
		var memo = {}, m;
		return {
			/**
			 * Test if given position matches opening tag
			 * @param {Number} i
			 * @returns {Object} Matched tag object
			 */
			open: function(i) {
				var m = this.matches(i);
				return m && m.type == 'open' ? m : null;
			},
			
			/**
			 * Test if given position matches closing tag
			 * @param {Number} i
			 * @returns {Object} Matched tag object
			 */
			close: function(i) {
				var m = this.matches(i);
				return m && m.type == 'close' ? m : null;
			},
			
			/**
			 * Matches either opening or closing tag for given position
			 * @param i
			 * @returns
			 */
			matches: function(i) {
				var key = 'p' + i;
				
				if (!(key in memo)) {
					if (text.charAt(i) == '<') {
						var substr = text.slice(i);
						if ((m = substr.match(reOpenTag))) {
							memo[key] = openTag(i, m);
						} else if ((m = substr.match(reCloseTag))) {
							memo[key] = closeTag(i, m);
						} else {
							// remember that given position contains no valid tag
							memo[key] = false;
						}
					}
				}
				
				return memo[key];
			},
			
			/**
			 * Returns original text
			 * @returns {String}
			 */
			text: function() {
				return text;
			}
		};
	}
	
	function matches(text, pos, pattern) {
		return text.substring(pos, pos + pattern.length) == pattern;
	}
	
	/**
	 * Search for closing pair of opening tag
	 * @param {Object} open Open tag instance
	 * @param {Object} matcher Matcher instance
	 */
	function findClosingPair(open, matcher) {
		var stack = [], tag = null;
		var text = matcher.text();
		
		for (var pos = open.range.end, len = text.length; pos < len; pos++) {
			if (matches(text, pos, '<!--')) {
				// skip to end of comment
				for (var j = pos; j < len; j++) {
					if (matches(text, j, '-->')) {
						pos = j + 3;
						break;
					}
				}
			}
			
			if ((tag = matcher.matches(pos))) {
				if (tag.type == 'open' && !tag.selfClose) {
					stack.push(tag.name);
				} else if (tag.type == 'close') {
					if (!stack.length) { // found valid pair?
						return tag.name == open.name ? tag : null;
					}
					
					// check if current closing tag matches previously opened one
					if (_.last(stack) == tag.name) {
						stack.pop();
					} else {
						var found = false;
						while (stack.length && !found) {
							var last = stack.pop();
							if (last == tag.name) {
								found = true;
							}
						}
						
						if (!stack.length && !found) {
							return tag.name == open.name ? tag : null;
						}
					}
				}
			}
			
		}
	}
	
	return {
		/**
		 * Main function: search for tag pair in <code>text</code> for given 
		 * position
		 * @memberOf htmlMatcher
		 * @param {String} text 
		 * @param {Number} pos
		 * @returns {Object}
		 */
		find: function(text, pos) {
			var range = require('range');
			var matcher = createMatcher(text); 
			var open = null, close = null;
			var j, jl;
			
			for (var i = pos; i >= 0; i--) {
				if ((open = matcher.open(i))) {
					// found opening tag
					if (open.selfClose) {
						if (open.range.cmp(pos, 'lt', 'gt')) {
							// inside self-closing tag, found match
							break;
						}
						
						// outside self-closing tag, continue
						continue;
					}
					
					close = findClosingPair(open, matcher);
					if (close) {
						// found closing tag.
						var r = range.create2(open.range.start, close.range.end);
						if (r.contains(pos)) {
							break;
						}
					} else if (open.range.contains(pos)) {
						// we inside empty HTML tag like <br>
						break;
					}
					
					open = null;
				} else if (matches(text, i, '-->')) {
					// skip back to comment start
					for (j = i - 1; j >= 0; j--) {
						if (matches(text, j, '-->')) {
							// found another comment end, do nothing
							break;
						} else if (matches(text, j, '<!--')) {
							i = j;
							break;
						}
					}
				} else if (matches(text, i, '<!--')) {
					// we're inside comment, match it
					for (j = i + 4, jl = text.length; j < jl; j++) {
						if (matches(text, j, '-->')) {
							j += 3;
							break;
						}
					}
					
					open = comment(i, j);
					break;
				}
			}
			
			if (open) {
				var outerRange = null;
				var innerRange = null;
				
				if (close) {
					outerRange = range.create2(open.range.start, close.range.end);
					innerRange = range.create2(open.range.end, close.range.start);
				} else {
					outerRange = innerRange = range.create2(open.range.start, open.range.end);
				}
				
				if (open.type == 'comment') {
					// adjust positions of inner range for comment
					var _c = outerRange.substring(text);
					innerRange.start += _c.length - _c.replace(/^<\!--\s*/, '').length;
					innerRange.end -= _c.length - _c.replace(/\s*-->$/, '').length;
				}
				
				return {
					open: open,
					close: close,
					type: open.type == 'comment' ? 'comment' : 'tag',
					innerRange: innerRange,
					innerContent: function() {
						return this.innerRange.substring(text);
					},
					outerRange: outerRange,
					outerContent: function() {
						return this.outerRange.substring(text);
					},
					range: !innerRange.length() || !innerRange.cmp(pos, 'lte', 'gte') ? outerRange : innerRange,
					content: function() {
						return this.range.substring(text);
					},
					source: text
				};
			}
		},
		
		/**
		 * The same as <code>find()</code> method, but restricts matched result 
		 * to <code>tag</code> type
		 * @param {String} text 
		 * @param {Number} pos
		 * @returns {Object}
		 */
		tag: function(text, pos) {
			var result = this.find(text, pos);
			if (result && result.type == 'tag') {
				return result;
			}
		}
	};
});/**
 * Utility module for handling tabstops tokens generated by Emmet's 
 * "Expand Abbreviation" action. The main <code>extract</code> method will take
 * raw text (for example: <i>${0} some ${1:text}</i>), find all tabstops 
 * occurrences, replace them with tokens suitable for your editor of choice and 
 * return object with processed text and list of found tabstops and their ranges.
 * For sake of portability (Objective-C/Java) the tabstops list is a plain 
 * sorted array with plain objects.
 * 
 * Placeholders with the same are meant to be <i>linked</i> in your editor.
 * @param {Function} require
 * @param {Underscore} _  
 */
emmet.define('tabStops', function(require, _) {
	/**
	 * Global placeholder value, automatically incremented by 
	 * <code>variablesResolver()</code> function
	 */
	var startPlaceholderNum = 100;
	
	var tabstopIndex = 0;
	
	var defaultOptions = {
		replaceCarets: false,
		escape: function(ch) {
			return '\\' + ch;
		},
		tabstop: function(data) {
			return data.token;
		},
		variable: function(data) {
			return data.token;
		}
	};
	
	// XXX register output processor that will upgrade tabstops of parsed node
	// in order to prevent tabstop index conflicts
	require('abbreviationParser').addOutputProcessor(function(text, node, type) {
		var maxNum = 0;
		var tabstops = require('tabStops');
		var utils = require('utils');
		
		var tsOptions = {
			tabstop: function(data) {
				var group = parseInt(data.group, 10);
				if (group === 0)
					return '${0}';
				
				if (group > maxNum) maxNum = group;
				if (data.placeholder) {
					// respect nested placeholders
					var ix = group + tabstopIndex;
					var placeholder = tabstops.processText(data.placeholder, tsOptions);
					return '${' + ix + ':' + placeholder + '}';
				} else {
					return '${' + (group + tabstopIndex) + '}';
				}
			}
		};
		
		// upgrade tabstops
		text = tabstops.processText(text, tsOptions);
		
		// resolve variables
		text = utils.replaceVariables(text, tabstops.variablesResolver(node));
		
		tabstopIndex += maxNum + 1;
		return text;
	});
	
	return {
		/**
		 * Main function that looks for a tabstops in provided <code>text</code>
		 * and returns a processed version of <code>text</code> with expanded 
		 * placeholders and list of tabstops found.
		 * @param {String} text Text to process
		 * @param {Object} options List of processor options:<br>
		 * 
		 * <b>replaceCarets</b> : <code>Boolean</code> — replace all default
		 * caret placeholders (like <i>{%::emmet-caret::%}</i>) with <i>${0:caret}</i><br>
		 * 
		 * <b>escape</b> : <code>Function</code> — function that handle escaped
		 * characters (mostly '$'). By default, it returns the character itself 
		 * to be displayed as is in output, but sometimes you will use 
		 * <code>extract</code> method as intermediate solution for further 
		 * processing and want to keep character escaped. Thus, you should override
		 * <code>escape</code> method to return escaped symbol (e.g. '\\$')<br>
		 * 
		 * <b>tabstop</b> : <code>Function</code> – a tabstop handler. Receives 
		 * a single argument – an object describing token: its position, number 
		 * group, placeholder and token itself. Should return a replacement 
		 * string that will appear in final output
		 * 
		 * <b>variable</b> : <code>Function</code> – variable handler. Receives 
		 * a single argument – an object describing token: its position, name 
		 * and original token itself. Should return a replacement 
		 * string that will appear in final output
		 * 
		 * @returns {Object} Object with processed <code>text</code> property
		 * and array of <code>tabstops</code> found
		 * @memberOf tabStops
		 */
		extract: function(text, options) {
			// prepare defaults
			var utils = require('utils');
			var placeholders = {carets: ''};
			var marks = [];
			
			options = _.extend({}, defaultOptions, options, {
				tabstop: function(data) {
					var token = data.token;
					var ret = '';
					if (data.placeholder == 'cursor') {
						marks.push({
							start: data.start,
							end: data.start + token.length,
							group: 'carets',
							value: ''
						});
					} else {
						// unify placeholder value for single group
						if ('placeholder' in data)
							placeholders[data.group] = data.placeholder;
						
						if (data.group in placeholders)
							ret = placeholders[data.group];
						
						marks.push({
							start: data.start,
							end: data.start + token.length,
							group: data.group,
							value: ret
						});
					}
					
					return token;
				}
			});
			
			if (options.replaceCarets) {
				text = text.replace(new RegExp( utils.escapeForRegexp( utils.getCaretPlaceholder() ), 'g'), '${0:cursor}');
			}
			
			// locate tabstops and unify group's placeholders
			text = this.processText(text, options);
			
			// now, replace all tabstops with placeholders
			var buf = utils.stringBuilder(), lastIx = 0;
			var tabStops = _.map(marks, function(mark) {
				buf.append(text.substring(lastIx, mark.start));
				
				var pos = buf.length;
				var ph = placeholders[mark.group] || '';
				
				buf.append(ph);
				lastIx = mark.end;
				
				return {
					group: mark.group,
					start: pos,
					end:  pos + ph.length
				};
			});
			
			buf.append(text.substring(lastIx));
			
			return {
				text: buf.toString(),
				tabstops: _.sortBy(tabStops, 'start')
			};
		},
		
		/**
		 * Text processing routine. Locates escaped characters and tabstops and
		 * replaces them with values returned by handlers defined in 
		 * <code>options</code>
		 * @param {String} text
		 * @param {Object} options See <code>extract</code> method options 
		 * description
		 * @returns {String}
		 */
		processText: function(text, options) {
			options = _.extend({}, defaultOptions, options);
			
			var buf = require('utils').stringBuilder();
			/** @type StringStream */
			var stream = require('stringStream').create(text);
			var ch, m, a;
			
			while ((ch = stream.next())) {
				if (ch == '\\' && !stream.eol()) {
					// handle escaped character
					buf.append(options.escape(stream.next()));
					continue;
				}
				
				a = ch;
				
				if (ch == '$') {
					// looks like a tabstop
					stream.start = stream.pos - 1;
					
					if ((m = stream.match(/^[0-9]+/))) {
						// it's $N
						a = options.tabstop({
							start: buf.length, 
							group: stream.current().substr(1),
							token: stream.current()
						});
					} else if ((m = stream.match(/^\{([a-z_\-][\w\-]*)\}/))) {
						// ${variable}
						a = options.variable({
							start: buf.length, 
							name: m[1],
							token: stream.current()
						});
					} else if ((m = stream.match(/^\{([0-9]+)(:.+?)?\}/, false))) {
						// ${N:value} or ${N} placeholder
						// parse placeholder, including nested ones
						stream.skipToPair('{', '}');
						
						var obj = {
							start: buf.length, 
							group: m[1],
							token: stream.current()
						};
						
						var placeholder = obj.token.substring(obj.group.length + 2, obj.token.length - 1);
						
						if (placeholder) {
							obj.placeholder = placeholder.substr(1);
						}
						
						a = options.tabstop(obj);
					}
				}
				
				buf.append(a);
			}
			
			return buf.toString();
		},
		
		/**
		 * Upgrades tabstops in output node in order to prevent naming conflicts
		 * @param {AbbreviationNode} node
		 * @param {Number} offset Tab index offset
		 * @returns {Number} Maximum tabstop index in element
		 */
		upgrade: function(node, offset) {
			var maxNum = 0;
			var options = {
				tabstop: function(data) {
					var group = parseInt(data.group, 10);
					if (group > maxNum) maxNum = group;
						
					if (data.placeholder)
						return '${' + (group + offset) + ':' + data.placeholder + '}';
					else
						return '${' + (group + offset) + '}';
				}
			};
			
			_.each(['start', 'end', 'content'], function(p) {
				node[p] = this.processText(node[p], options);
			}, this);
			
			return maxNum;
		},
		
		/**
		 * Helper function that produces a callback function for 
		 * <code>replaceVariables()</code> method from {@link utils}
		 * module. This callback will replace variable definitions (like 
		 * ${var_name}) with their value defined in <i>resource</i> module,
		 * or outputs tabstop with variable name otherwise.
		 * @param {AbbreviationNode} node Context node
		 * @returns {Function}
		 */
		variablesResolver: function(node) {
			var placeholderMemo = {};
			var res = require('resources');
			return function(str, varName) {
				// do not mark `child` variable as placeholder – it‘s a reserved
				// variable name
				if (varName == 'child')
					return str;
				
				if (varName == 'cursor')
					return require('utils').getCaretPlaceholder();
				
				var attr = node.attribute(varName);
				if (!_.isUndefined(attr) && attr !== str) {
					return attr;
				}
				
				var varValue = res.getVariable(varName);
				if (varValue)
					return varValue;
				
				// output as placeholder
				if (!placeholderMemo[varName])
					placeholderMemo[varName] = startPlaceholderNum++;
					
				return '${' + placeholderMemo[varName] + ':' + varName + '}';
			};
		},
		
		/**
		 * Resets global tabstop index. When parsed tree is converted to output
		 * string (<code>AbbreviationNode.toString()</code>), all tabstops 
		 * defined in snippets and elements are upgraded in order to prevent
		 * naming conflicts of nested. For example, <code>${1}</code> of a node
		 * should not be linked with the same placehilder of the child node.
		 * By default, <code>AbbreviationNode.toString()</code> automatically
		 * upgrades tabstops of the same index for each node and writes maximum
		 * tabstop index into the <code>tabstopIndex</code> variable. To keep
		 * this variable at reasonable value, it is recommended to call 
		 * <code>resetTabstopIndex()</code> method each time you expand variable 
		 * @returns
		 */
		resetTabstopIndex: function() {
			tabstopIndex = 0;
			startPlaceholderNum = 100;
		}
	};
});/**
 * Common module's preferences storage. This module 
 * provides general storage for all module preferences, their description and
 * default values.<br><br>
 * 
 * This module can also be used to list all available properties to create 
 * UI for updating properties
 * 
 * @memberOf __preferencesDefine
 * @constructor
 * @param {Function} require
 * @param {Underscore} _ 
 */
emmet.define('preferences', function(require, _) {
	var preferences = {};
	var defaults = {};
	var _dbgDefaults = null;
	var _dbgPreferences = null;

	function toBoolean(val) {
		if (_.isString(val)) {
			val = val.toLowerCase();
			return val == 'yes' || val == 'true' || val == '1';
		}

		return !!val;
	}
	
	function isValueObj(obj) {
		return _.isObject(obj) 
			&& 'value' in obj 
			&& _.keys(obj).length < 3;
	}
	
	return {
		/**
		 * Creates new preference item with default value
		 * @param {String} name Preference name. You can also pass object
		 * with many options
		 * @param {Object} value Preference default value
		 * @param {String} description Item textual description
		 * @memberOf preferences
		 */
		define: function(name, value, description) {
			var prefs = name;
			if (_.isString(name)) {
				prefs = {};
				prefs[name] = {
					value: value,
					description: description
				};
			}
			
			_.each(prefs, function(v, k) {
				defaults[k] = isValueObj(v) ? v : {value: v};
			});
		},
		
		/**
		 * Updates preference item value. Preference value should be defined
		 * first with <code>define</code> method.
		 * @param {String} name Preference name. You can also pass object
		 * with many options
		 * @param {Object} value Preference default value
		 * @memberOf preferences
		 */
		set: function(name, value) {
			var prefs = name;
			if (_.isString(name)) {
				prefs = {};
				prefs[name] = value;
			}
			
			_.each(prefs, function(v, k) {
				if (!(k in defaults)) {
					throw 'Property "' + k + '" is not defined. You should define it first with `define` method of current module';
				}
				
				// do not set value if it equals to default value
				if (v !== defaults[k].value) {
					// make sure we have value of correct type
					switch (typeof defaults[k].value) {
						case 'boolean':
							v = toBoolean(v);
							break;
						case 'number':
							v = parseInt(v + '', 10) || 0;
							break;
						default: // convert to string
							if (v !== null) {
								v += '';
							}
					}

					preferences[k] = v;
				} else if  (k in preferences) {
					delete preferences[k];
				}
			});
		},
		
		/**
		 * Returns preference value
		 * @param {String} name
		 * @returns {String} Returns <code>undefined</code> if preference is 
		 * not defined
		 */
		get: function(name) {
			if (name in preferences)
				return preferences[name];
			
			if (name in defaults)
				return defaults[name].value;
			
			return void 0;
		},
		
		/**
		 * Returns comma-separated preference value as array of values
		 * @param {String} name
		 * @returns {Array} Returns <code>undefined</code> if preference is 
		 * not defined, <code>null</code> if string cannot be converted to array
		 */
		getArray: function(name) {
			var val = this.get(name);
			if (_.isUndefined(val) || val === null || val === '')  {
				return null;
			}

			val = _.map(val.split(','), require('utils').trim);
			if (!val.length) {
				return null;
			}
			
			return val;
		},
		
		/**
		 * Returns comma and colon-separated preference value as dictionary
		 * @param {String} name
		 * @returns {Object}
		 */
		getDict: function(name) {
			var result = {};
			_.each(this.getArray(name), function(val) {
				var parts = val.split(':');
				result[parts[0]] = parts[1];
			});
			
			return result;
		},
		
		/**
		 * Returns description of preference item
		 * @param {String} name Preference name
		 * @returns {Object}
		 */
		description: function(name) {
			return name in defaults ? defaults[name].description : void 0;
		},
		
		/**
		 * Completely removes specified preference(s)
		 * @param {String} name Preference name (or array of names)
		 */
		remove: function(name) {
			if (!_.isArray(name))
				name = [name];
			
			_.each(name, function(key) {
				if (key in preferences)
					delete preferences[key];
				
				if (key in defaults)
					delete defaults[key];
			});
		},
		
		/**
		 * Returns sorted list of all available properties
		 * @returns {Array}
		 */
		list: function() {
			return _.map(_.keys(defaults).sort(), function(key) {
				return {
					name: key,
					value: this.get(key),
					type: typeof defaults[key].value,
					description: defaults[key].description
				};
			}, this);
		},
		
		/**
		 * Loads user-defined preferences from JSON
		 * @param {Object} json
		 * @returns
		 */
		load: function(json) {
			_.each(json, function(value, key) {
				this.set(key, value);
			}, this);
		},

		/**
		 * Returns hash of user-modified preferences
		 * @returns {Object}
		 */
		exportModified: function() {
			return _.clone(preferences);
		},
		
		/**
		 * Reset to defaults
		 * @returns
		 */
		reset: function() {
			preferences = {};
		},
		
		/**
		 * For unit testing: use empty storage
		 */
		_startTest: function() {
			_dbgDefaults = defaults;
			_dbgPreferences = preferences;
			defaults = {};
			preferences = {};
		},
		
		/**
		 * For unit testing: restore original storage
		 */
		_stopTest: function() {
			defaults = _dbgDefaults;
			preferences = _dbgPreferences;
		}
	};
});/**
 * Module for handling filters
 * @param {Function} require
 * @param {Underscore} _
 * @author Sergey Chikuyonok (serge.che@gmail.com) <http://chikuyonok.ru>
 */
emmet.define('filters', function(require, _) {
	/** List of registered filters */
	var registeredFilters = {};
	
	/** Filters that will be applied for unknown syntax */
	var basicFilters = 'html';
	
	function list(filters) {
		if (!filters)
			return [];
		
		if (_.isString(filters))
			return filters.split(/[\|,]/g);
		
		return filters;
	}
	
	return  {
		/**
		 * Register new filter
		 * @param {String} name Filter name
		 * @param {Function} fn Filter function
		 */
		add: function(name, fn) {
			registeredFilters[name] = fn;
		},
		
		/**
		 * Apply filters for final output tree
		 * @param {AbbreviationNode} tree Output tree
		 * @param {Array} filters List of filters to apply. Might be a 
		 * <code>String</code>
		 * @param {Object} profile Output profile, defined in <i>profile</i> 
		 * module. Filters defined it profile are not used, <code>profile</code>
		 * is passed to filter function
		 * @memberOf emmet.filters
		 * @returns {AbbreviationNode}
		 */
		apply: function(tree, filters, profile) {
			var utils = require('utils');
			profile = require('profile').get(profile);
			
			_.each(list(filters), function(filter) {
				var name = utils.trim(filter.toLowerCase());
				if (name && name in registeredFilters) {
					tree = registeredFilters[name](tree, profile);
				}
			});
			
			return tree;
		},
		
		/**
		 * Composes list of filters that should be applied to a tree, based on 
		 * passed data
		 * @param {String} syntax Syntax name ('html', 'css', etc.)
		 * @param {Object} profile Output profile
		 * @param {String} additionalFilters List or pipe-separated
		 * string of additional filters to apply
		 * @returns {Array}
		 */
		composeList: function(syntax, profile, additionalFilters) {
			profile = require('profile').get(profile);
			var filters = list(profile.filters || require('resources').findItem(syntax, 'filters') || basicFilters);
			
			if (profile.extraFilters) {
				filters = filters.concat(list(profile.extraFilters));
			}
				
			if (additionalFilters) {
				filters = filters.concat(list(additionalFilters));
			}
				
			if (!filters || !filters.length) {
				// looks like unknown syntax, apply basic filters
				filters = list(basicFilters);
			}
				
			return filters;
		},
		
		/**
		 * Extracts filter list from abbreviation
		 * @param {String} abbr
		 * @returns {Array} Array with cleaned abbreviation and list of 
		 * extracted filters
		 */
		extractFromAbbreviation: function(abbr) {
			var filters = '';
			abbr = abbr.replace(/\|([\w\|\-]+)$/, function(str, p1){
				filters = p1;
				return '';
			});
			
			return [abbr, list(filters)];
		}
	};
});/**
 * Module that contains factories for element types used by Emmet
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('elements', function(require, _) {
	var factories = {};
	var reAttrs = /([\w\-:]+)\s*=\s*(['"])(.*?)\2/g;
	
	var result = {
		/**
		 * Create new element factory
		 * @param {String} name Element identifier
		 * @param {Function} factory Function that produces element of specified 
		 * type. The object generated by this factory is automatically 
		 * augmented with <code>type</code> property pointing to element
		 * <code>name</code>
		 * @memberOf elements
		 */
		add: function(name, factory) {
			var that = this;
			factories[name] = function() {
				var elem = factory.apply(that, arguments);
				if (elem)
					elem.type = name;
				
				return elem;
			};
		},
		
		/**
		 * Returns factory for specified name
		 * @param {String} name
		 * @returns {Function}
		 */
		get: function(name) {
			return factories[name];
		},
		
		/**
		 * Creates new element with specified type
		 * @param {String} name
		 * @returns {Object}
		 */
		create: function(name) {
			var args = [].slice.call(arguments, 1);
			var factory = this.get(name);
			return factory ? factory.apply(this, args) : null;
		},
		
		/**
		 * Check if passed element is of specified type
		 * @param {Object} elem
		 * @param {String} type
		 * @returns {Boolean}
		 */
		is: function(elem, type) {
			return elem && elem.type === type;
		}
	};
	
	// register resource references
	function commonFactory(value) {
		return {data: value};
	}
	
	/**
	 * Element factory
	 * @param {String} elementName Name of output element
	 * @param {String} attrs Attributes definition. You may also pass
	 * <code>Array</code> where each contains object with <code>name</code> 
	 * and <code>value</code> properties, or <code>Object</code>
	 * @param {Boolean} isEmpty Is expanded element should be empty
	 */
	result.add('element', function(elementName, attrs, isEmpty) {
		var ret = {
			/** @memberOf __emmetDataElement */
			name: elementName,
			is_empty: !!isEmpty
		};
		
		if (attrs) {
			ret.attributes = [];
			if (_.isArray(attrs)) {
				ret.attributes = attrs;
			} else if (_.isString(attrs)) {
				var m;
				while ((m = reAttrs.exec(attrs))) {
					ret.attributes.push({
						name: m[1],
						value: m[3]
					});
				}
			} else {
				_.each(attrs, function(value, name) {
					ret.attributes.push({
						name: name, 
						value: value
					});
				});
			}
		}
		
		return ret;
	});
	
	result.add('snippet', commonFactory);
	result.add('reference', commonFactory);
	result.add('empty', function() {
		return {};
	});
	
	return result;
});/**
 * Abstract implementation of edit tree interface.
 * Edit tree is a named container of editable “name-value” child elements, 
 * parsed from <code>source</code>. This container provides convenient methods
 * for editing/adding/removing child elements. All these update actions are
 * instantly reflected in the <code>source</code> code with respect of formatting.
 * <br><br>
 * For example, developer can create an edit tree from CSS rule and add or 
 * remove properties from it–all changes will be immediately reflected in the 
 * original source.
 * <br><br>
 * All classes defined in this module should be extended the same way as in
 * Backbone framework: using <code>extend</code> method to create new class and 
 * <code>initialize</code> method to define custom class constructor.
 * 
 * @example
 * <pre><code>
 * var MyClass = require('editTree').EditElement.extend({
 *     initialize: function() {
 *     // constructor code here
 *   }
 * });
 * 
 * var elem = new MyClass(); 
 * </code></pre>
 * 
 * 
 * @param {Function} require
 * @param {Underscore} _
 * @constructor
 * @memberOf __editTreeDefine
 */
emmet.define('editTree', function(require, _, core) {
	var range = require('range').create;
	
	/**
	 * Named container of edited source
	 * @type EditContainer
	 * @param {String} source
	 * @param {Object} options
	 */
	function EditContainer(source, options) {
		this.options = _.extend({offset: 0}, options);
		/**
		 * Source code of edited structure. All changes in the structure are 
		 * immediately reflected into this property
		 */
		this.source = source;
		
		/** 
		 * List of all editable children
		 * @private 
		 */
		this._children = [];
		
		/**
		 * Hash of all positions of container
		 * @private
		 */
		this._positions = {
			name: 0
		};
		
		this.initialize.apply(this, arguments);
	}
	
	/**
	 * The self-propagating extend function for classes.
	 * @type Function
	 */
	EditContainer.extend = core.extend;
	
	EditContainer.prototype = {
		/**
		 * Child class constructor
		 */
		initialize: function() {},
		
		/**
		 * Replace substring of tag's source
		 * @param {String} value
		 * @param {Number} start
		 * @param {Number} end
		 * @private
		 */
		_updateSource: function(value, start, end) {
			// create modification range
			var r = range(start, _.isUndefined(end) ? 0 : end - start);
			var delta = value.length - r.length();
			
			var update = function(obj) {
				_.each(obj, function(v, k) {
					if (v >= r.end)
						obj[k] += delta;
				});
			};
			
			// update affected positions of current container
			update(this._positions);
			
			// update affected positions of children
			_.each(this.list(), function(item) {
				update(item._positions);
			});
			
			this.source = require('utils').replaceSubstring(this.source, value, r);
		},
			
			
		/**
		 * Adds new attribute 
		 * @param {String} name Property name
		 * @param {String} value Property value
		 * @param {Number} pos Position at which to insert new property. By 
		 * default the property is inserted at the end of rule 
		 * @returns {EditElement} Newly created element
		 */
		add: function(name, value, pos) {
			// this is abstract implementation
			var item = new EditElement(name, value);
			this._children.push(item);
			return item;
		},
		
		/**
		 * Returns attribute object
		 * @param {String} name Attribute name or its index
		 * @returns {EditElement}
		 */
		get: function(name) {
			if (_.isNumber(name))
				return this.list()[name];
			
			if (_.isString(name))
				return _.find(this.list(), function(prop) {
					return prop.name() === name;
				});
			
			return name;
		},
		
		/**
		 * Returns all children by name or indexes
		 * @param {Object} name Element name(s) or indexes (<code>String</code>,
		 * <code>Array</code>, <code>Number</code>)
		 * @returns {Array}
		 */
		getAll: function(name) {
			if (!_.isArray(name))
				name = [name];
			
			// split names and indexes
			var names = [], indexes = [];
			_.each(name, function(item) {
				if (_.isString(item))
					names.push(item);
				else if (_.isNumber(item))
					indexes.push(item);
			});
			
			return _.filter(this.list(), function(attribute, i) {
				return _.include(indexes, i) || _.include(names, attribute.name());
			});
		},
		
		/**
		 * Returns or updates element value. If such element doesn't exists,
		 * it will be created automatically and added at the end of child list.
		 * @param {String} name Element name or its index
		 * @param {String} value New element value
		 * @returns {String}
		 */
		value: function(name, value, pos) {
			var element = this.get(name);
			if (element)
				return element.value(value);
			
			if (!_.isUndefined(value)) {
				// no such element — create it
				return this.add(name, value, pos);
			}
		},
		
		/**
		 * Returns all values of child elements found by <code>getAll()</code>
		 * method
		 * @param {Object} name Element name(s) or indexes (<code>String</code>,
		 * <code>Array</code>, <code>Number</code>)
		 * @returns {Array}
		 */
		values: function(name) {
			return _.map(this.getAll(name), function(element) {
				return element.value();
			});
		},
		
		/**
		 * Remove child element
		 * @param {String} name Property name or its index
		 */
		remove: function(name) {
			var element = this.get(name);
			if (element) {
				this._updateSource('', element.fullRange());
				this._children = _.without(this._children, element);
			}
		},
		
		/**
		 * Returns list of all editable child elements
		 * @returns {Array}
		 */
		list: function() {
			return this._children;
		},
		
		/**
		 * Returns index of editble child in list
		 * @param {Object} item
		 * @returns {Number}
		 */
		indexOf: function(item) {
			return _.indexOf(this.list(), this.get(item));
		},
		
		/**
		 * Sets or gets container name
		 * @param {String} val New name. If not passed, current 
		 * name is returned
		 * @return {String}
		 */
		name: function(val) {
			if (!_.isUndefined(val) && this._name !== (val = String(val))) {
				this._updateSource(val, this._positions.name, this._positions.name + this._name.length);
				this._name = val;
			}
			
			return this._name;
		},
		
		/**
		 * Returns name range object
		 * @param {Boolean} isAbsolute Return absolute range (with respect of 
		 * rule offset)
		 * @returns {Range}
		 */
		nameRange: function(isAbsolute) {
			return range(this._positions.name + (isAbsolute ? this.options.offset : 0), this.name());
		},
		
		/**
		 * Returns range of current source
		 * @param {Boolean} isAbsolute
		 */
		range: function(isAbsolute) {
			return range(isAbsolute ? this.options.offset : 0, this.toString());
		},
		
		/**
		 * Returns element that belongs to specified position
		 * @param {Number} pos
		 * @param {Boolean} isAbsolute
		 * @returns {EditElement}
		 */
		itemFromPosition: function(pos, isAbsolute) {
			return _.find(this.list(), function(elem) {
				return elem.range(isAbsolute).inside(pos);
			});
		},
		
		/**
		 * Returns source code of current container 
		 * @returns {String}
		 */
		toString: function() {
			return this.source;
		}
	};
	
	/**
	 * @param {EditContainer} parent
	 * @param {Object} nameToken
	 * @param {Object} valueToken
	 */
	function EditElement(parent, nameToken, valueToken) {
		/** @type EditContainer */
		this.parent = parent;
		
		this._name = nameToken.value;
		this._value = valueToken ? valueToken.value : '';
		
		this._positions = {
			name: nameToken.start,
			value: valueToken ? valueToken.start : -1
		};
		
		this.initialize.apply(this, arguments);
	}
	
	/**
	 * The self-propagating extend function for classes.
	 * @type Function
	 */
	EditElement.extend = core.extend;
	
	EditElement.prototype = {
		/**
		 * Child class constructor
		 */
		initialize: function() {},
		
		/**
		 * Make position absolute
		 * @private
		 * @param {Number} num
		 * @param {Boolean} isAbsolute
		 * @returns {Boolean}
		 */
		_pos: function(num, isAbsolute) {
			return num + (isAbsolute ? this.parent.options.offset : 0);
		},
			
		/**
		 * Sets of gets element value
		 * @param {String} val New element value. If not passed, current 
		 * value is returned
		 * @returns {String}
		 */
		value: function(val) {
			if (!_.isUndefined(val) && this._value !== (val = String(val))) {
				this.parent._updateSource(val, this.valueRange());
				this._value = val;
			}
			
			return this._value;
		},
		
		/**
		 * Sets of gets element name
		 * @param {String} val New element name. If not passed, current 
		 * name is returned
		 * @returns {String}
		 */
		name: function(val) {
			if (!_.isUndefined(val) && this._name !== (val = String(val))) {
				this.parent._updateSource(val, this.nameRange());
				this._name = val;
			}
			
			return this._name;
		},
		
		/**
		 * Returns position of element name token
		 * @param {Boolean} isAbsolute Return absolute position
		 * @returns {Number}
		 */
		namePosition: function(isAbsolute) {
			return this._pos(this._positions.name, isAbsolute);
		},
		
		/**
		 * Returns position of element value token
		 * @param {Boolean} isAbsolute Return absolute position
		 * @returns {Number}
		 */
		valuePosition: function(isAbsolute) {
			return this._pos(this._positions.value, isAbsolute);
		},
		
		/**
		 * Returns element name
		 * @param {Boolean} isAbsolute Return absolute range 
		 * @returns {Range}
		 */
		range: function(isAbsolute) {
			return range(this.namePosition(isAbsolute), this.toString());
		},
		
		/**
		 * Returns full element range, including possible indentation
		 * @param {Boolean} isAbsolute Return absolute range
		 * @returns {Range}
		 */
		fullRange: function(isAbsolute) {
			return this.range(isAbsolute);
		},
		
		/**
		 * Returns element name range
		 * @param {Boolean} isAbsolute Return absolute range
		 * @returns {Range}
		 */
		nameRange: function(isAbsolute) {
			return range(this.namePosition(isAbsolute), this.name());
		},
		
		/**
		 * Returns element value range
		 * @param {Boolean} isAbsolute Return absolute range
		 * @returns {Range}
		 */
		valueRange: function(isAbsolute) {
			return range(this.valuePosition(isAbsolute), this.value());
		},
		
		/**
		 * Returns current element string representation
		 * @returns {String}
		 */
		toString: function() {
			return this.name() + this.value();
		},
		
		valueOf: function() {
			return this.toString();
		}
	};
	
	return {
		EditContainer: EditContainer,
		EditElement: EditElement,
		
		/**
		 * Creates token that can be fed to <code>EditElement</code>
		 * @param {Number} start
		 * @param {String} value
		 * @param {String} type
		 * @returns
		 */
		createToken: function(start, value, type) {
			var obj = {
				start: start || 0,
				value: value || '',
				type: type
			};
			
			obj.end = obj.start + obj.value.length;
			return obj;
		}
	};
});/**
 * CSS EditTree is a module that can parse a CSS rule into a tree with 
 * convenient methods for adding, modifying and removing CSS properties. These 
 * changes can be written back to string with respect of code formatting.
 * 
 * @memberOf __cssEditTreeDefine
 * @constructor
 * @param {Function} require
 * @param {Underscore} _ 
 */
emmet.define('cssEditTree', function(require, _) {
	var defaultOptions = {
		styleBefore: '\n\t',
		styleSeparator: ': ',
		offset: 0
	};
	
	var WHITESPACE_REMOVE_FROM_START = 1;
	var WHITESPACE_REMOVE_FROM_END   = 2;
	
	/**
	 * Returns range object
	 * @param {Number} start
	 * @param {Number} len 
	 * @returns {Range}
	 */
	function range(start, len) {
		return require('range').create(start, len);
	}
	
	/**
	 * Removes whitespace tokens from the array ends
	 * @param {Array} tokens
	 * @param {Number} mask Mask indicating from which end whitespace should be 
	 * removed 
	 * @returns {Array}
	 */
	function trimWhitespaceTokens(tokens, mask) {
		mask = mask || (WHITESPACE_REMOVE_FROM_START | WHITESPACE_REMOVE_FROM_END);
		var whitespace = ['white', 'line'];
		
		if ((mask & WHITESPACE_REMOVE_FROM_END) == WHITESPACE_REMOVE_FROM_END)
			while (tokens.length && _.include(whitespace, _.last(tokens).type)) {
				tokens.pop();
			}
		
		if ((mask & WHITESPACE_REMOVE_FROM_START) == WHITESPACE_REMOVE_FROM_START)
			while (tokens.length && _.include(whitespace, tokens[0].type)) {
				tokens.shift();
			}
		
		return tokens;
	}
	
	/**
	 * Helper function that searches for selector range for <code>CSSEditRule</code>
	 * @param {TokenIterator} it
	 * @returns {Range}
	 */
	function findSelectorRange(it) {
		var tokens = [], token;
		var start = it.position(), end;
		
		while ((token = it.next())) {
			if (token.type == '{')
				break;
			tokens.push(token);
		}
		
		trimWhitespaceTokens(tokens);
		
		if (tokens.length) {
			start = tokens[0].start;
			end = _.last(tokens).end;
		} else {
			end = start;
		}
		
		return range(start, end - start);
	}
	
	/**
	 * Helper function that searches for CSS property value range next to
	 * iterator's current position  
	 * @param {TokenIterator} it
	 * @returns {Range}
	 */
	function findValueRange(it) {
		// find value start position
		var skipTokens = ['white', 'line', ':'];
		var tokens = [], token, start, end;
		
		it.nextUntil(function() {
			return !_.include(skipTokens, this.itemNext().type);
		});
		
		start = it.current().end;
		// consume value
		while ((token = it.next())) {
			if (token.type == '}' || token.type == ';') {
				// found value end
				trimWhitespaceTokens(tokens, WHITESPACE_REMOVE_FROM_START 
						| (token.type == '}' ? WHITESPACE_REMOVE_FROM_END : 0));
				
				if (tokens.length) {
					start = tokens[0].start;
					end = _.last(tokens).end;
				} else {
					end = start;
				}
				
				return range(start, end - start);
			}
			
			tokens.push(token);
		}
		
		// reached the end of tokens list
		if (tokens.length) {
			return range(tokens[0].start, _.last(tokens).end - tokens[0].start);
		}
	}
	
	/**
	 * Finds parts of complex CSS value
	 * @param {String} str
	 * @returns {Array} Returns list of <code>Range</code>'s
	 */
	function findParts(str) {
		/** @type StringStream */
		var stream = require('stringStream').create(str);
		var ch;
		var result = [];
		var sep = /[\s\u00a0,]/;
		
		var add = function() {
			stream.next();
			result.push(range(stream.start, stream.current()));
			stream.start = stream.pos;
		};
		
		// skip whitespace
		stream.eatSpace();
		stream.start = stream.pos;
		
		while ((ch = stream.next())) {
			if (ch == '"' || ch == "'") {
				stream.next();
				if (!stream.skipTo(ch)) break;
				add();
			} else if (ch == '(') {
				// function found, may have nested function
				stream.backUp(1);
				if (!stream.skipToPair('(', ')')) break;
				stream.backUp(1);
				add();
			} else {
				if (sep.test(ch)) {
					result.push(range(stream.start, stream.current().length - 1));
					stream.eatWhile(sep);
					stream.start = stream.pos;
				}
			}
		}
		
		add();
		
		return _.chain(result)
			.filter(function(item) {
				return !!item.length();
			})
			.uniq(false, function(item) {
				return item.toString();
			})
			.value();
	}
	
	/**
	 * A bit hacky way to identify invalid CSS property definition: when user
	 * starts writing new abbreviation in CSS rule, he actually creates invalid
	 * CSS property definition and this method tries to identify such abbreviation
	 * and prevent it from being added to CSS edit tree 
	 * @param {TokenIterator} it
	 */
	function isValidIdentifier(it) {
//		return true;
		var tokens = it.tokens;
		for (var i = it._i + 1, il = tokens.length; i < il; i++) {
			if (tokens[i].type == ':')
				return true;
			
			if (tokens[i].type == 'identifier' || tokens[i].type == 'line')
				return false;
		}
		
		return false;
	}
	
	/**
	 * @class
	 * @extends EditContainer
	 */
	var CSSEditContainer = require('editTree').EditContainer.extend({
		initialize: function(source, options) {
			_.defaults(this.options, defaultOptions);
			var editTree = require('editTree');
			
			/** @type TokenIterator */
			var it = require('tokenIterator').create(
					require('cssParser').parse(source));
			
			var selectorRange = findSelectorRange(it);
			this._positions.name = selectorRange.start;
			this._name = selectorRange.substring(source);
			
			if (!it.current() || it.current().type != '{')
				throw 'Invalid CSS rule';
			
			this._positions.contentStart = it.position() + 1;
			
			// consume properties
			var propertyRange, valueRange, token;
			while ((token = it.next())) {
				if (token.type == 'identifier' && isValidIdentifier(it)) {
					propertyRange = range(token);
					valueRange = findValueRange(it);
					var end = (it.current() && it.current().type == ';') 
						? range(it.current())
						: range(valueRange.end, 0);
					this._children.push(new CSSEditElement(this,
							editTree.createToken(propertyRange.start, propertyRange.substring(source)),
							editTree.createToken(valueRange.start, valueRange.substring(source)),
							editTree.createToken(end.start, end.substring(source))
							));
				}
			}
			
			this._saveStyle();
		},
		
		/**
		 * Remembers all styles of properties
		 * @private
		 */
		_saveStyle: function() {
			var start = this._positions.contentStart;
			var source = this.source;
			var utils = require('utils');
			
			_.each(this.list(), /** @param {CSSEditProperty} p */ function(p) {
				p.styleBefore = source.substring(start, p.namePosition());
				// a small hack here:
				// Sometimes users add empty lines before properties to logically
				// separate groups of properties. In this case, a blind copy of
				// characters between rules may lead to undesired behavior,
				// especially when current rule is duplicated or used as a donor
				// to create new rule.
				// To solve this issue, we‘ll take only last newline indentation
				var lines = utils.splitByLines(p.styleBefore);
				if (lines.length > 1) {
					p.styleBefore = '\n' + _.last(lines);
				}
				
				p.styleSeparator = source.substring(p.nameRange().end, p.valuePosition());
				
				// graceful and naive comments removal 
				p.styleBefore = _.last(p.styleBefore.split('*/'));
				p.styleSeparator = p.styleSeparator.replace(/\/\*.*?\*\//g, '');
				
				start = p.range().end;
			});
		},
		
		/**
		 * Adds new CSS property 
		 * @param {String} name Property name
		 * @param {String} value Property value
		 * @param {Number} pos Position at which to insert new property. By 
		 * default the property is inserted at the end of rule 
		 * @returns {CSSEditProperty}
		 */
		add: function(name, value, pos) {
			var list = this.list();
			var start = this._positions.contentStart;
			var styles = _.pick(this.options, 'styleBefore', 'styleSeparator');
			var editTree = require('editTree');
			
			if (_.isUndefined(pos))
				pos = list.length;
			
			/** @type CSSEditProperty */
			var donor = list[pos];
			if (donor) {
				start = donor.fullRange().start;
			} else if ((donor = list[pos - 1])) {
				// make sure that donor has terminating semicolon
				donor.end(';');
				start = donor.range().end;
			}
			
			if (donor) {
				styles = _.pick(donor, 'styleBefore', 'styleSeparator');
			}
			
			var nameToken = editTree.createToken(start + styles.styleBefore.length, name);
			var valueToken = editTree.createToken(nameToken.end + styles.styleSeparator.length, value);
			
			var property = new CSSEditElement(this, nameToken, valueToken,
					editTree.createToken(valueToken.end, ';'));
			
			_.extend(property, styles);
			
			// write new property into the source
			this._updateSource(property.styleBefore + property.toString(), start);
			
			// insert new property
			this._children.splice(pos, 0, property);
			return property;
		}
	});
	
	/**
	 * @class
	 * @type CSSEditElement
	 * @constructor
	 */
	var CSSEditElement = require('editTree').EditElement.extend({
		initialize: function(rule, name, value, end) {
			this.styleBefore = rule.options.styleBefore;
			this.styleSeparator = rule.options.styleSeparator;
			
			this._end = end.value;
			this._positions.end = end.start;
		},
		
		/**
		 * Returns ranges of complex value parts
		 * @returns {Array} Returns <code>null</code> if value is not complex
		 */
		valueParts: function(isAbsolute) {
			var parts = findParts(this.value());
			if (isAbsolute) {
				var offset = this.valuePosition(true);
				_.each(parts, function(p) {
					p.shift(offset);
				});
			}
			
			return parts;
		},
		
		/**
		 * Sets of gets property end value (basically, it's a semicolon)
		 * @param {String} val New end value. If not passed, current 
		 * value is returned
		 */
		end: function(val) {
			if (!_.isUndefined(val) && this._end !== val) {
				this.parent._updateSource(val, this._positions.end, this._positions.end + this._end.length);
				this._end = val;
			}
			
			return this._end;
		},
		
		/**
		 * Returns full rule range, with indentation
		 * @param {Boolean} isAbsolute Return absolute range (with respect of
		 * rule offset)
		 * @returns {Range}
		 */
		fullRange: function(isAbsolute) {
			var r = this.range(isAbsolute);
			r.start -= this.styleBefore.length;
			return r;
		},
		
		/**
		 * Returns item string representation
		 * @returns {String}
		 */
		toString: function() {
			return this.name() + this.styleSeparator + this.value() + this.end();
		}
	});
	
	return {
		/**
		 * Parses CSS rule into editable tree
		 * @param {String} source
		 * @param {Object} options
		 * @memberOf emmet.cssEditTree
		 * @returns {EditContainer}
		 */
		parse: function(source, options) {
			return new CSSEditContainer(source, options);
		},
		
		/**
		 * Extract and parse CSS rule from specified position in <code>content</code> 
		 * @param {String} content CSS source code
		 * @param {Number} pos Character position where to start source code extraction
		 * @returns {EditContainer}
		 */
		parseFromPosition: function(content, pos, isBackward) {
			var bounds = this.extractRule(content, pos, isBackward);
			if (!bounds || !bounds.inside(pos))
				// no matching CSS rule or caret outside rule bounds
				return null;
			
			return this.parse(bounds.substring(content), {
				offset: bounds.start
			});
		},
		
		/**
		 * Extracts single CSS selector definition from source code
		 * @param {String} content CSS source code
		 * @param {Number} pos Character position where to start source code extraction
		 * @returns {Range}
		 */
		extractRule: function(content, pos, isBackward) {
			var result = '';
			var len = content.length;
			var offset = pos;
			var stopChars = '{}/\\<>\n\r';
			var bracePos = -1, ch;
			
			// search left until we find rule edge
			while (offset >= 0) {
				ch = content.charAt(offset);
				if (ch == '{') {
					bracePos = offset;
					break;
				}
				else if (ch == '}' && !isBackward) {
					offset++;
					break;
				}
				
				offset--;
			}
			
			// search right for full rule set
			while (offset < len) {
				ch = content.charAt(offset);
				if (ch == '{') {
					bracePos = offset;
				} else if (ch == '}') {
					if (bracePos != -1)
						result = content.substring(bracePos, offset + 1);
					break;
				}
				
				offset++;
			}
			
			if (result) {
				// find CSS selector
				offset = bracePos - 1;
				var selector = '';
				while (offset >= 0) {
					ch = content.charAt(offset);
					if (stopChars.indexOf(ch) != -1) break;
					offset--;
				}
				
				// also trim whitespace
				selector = content.substring(offset + 1, bracePos).replace(/^[\s\n\r]+/m, '');
				return require('range').create(bracePos - selector.length, result.length + selector.length);
			}
			
			return null;
		},
		
		/**
		 * Removes vendor prefix from CSS property
		 * @param {String} name CSS property
		 * @return {String}
		 */
		baseName: function(name) {
			return name.replace(/^\s*\-\w+\-/, '');
		},
		
		/**
		 * Finds parts of complex CSS value
		 * @param {String} str
		 * @returns {Array}
		 */
		findParts: findParts
	};
});/**
 * XML EditTree is a module that can parse an XML/HTML element into a tree with 
 * convenient methods for adding, modifying and removing attributes. These 
 * changes can be written back to string with respect of code formatting.
 * 
 * @memberOf __xmlEditTreeDefine
 * @constructor
 * @param {Function} require
 * @param {Underscore} _ 
 */
emmet.define('xmlEditTree', function(require, _) {
	var defaultOptions = {
		styleBefore: ' ',
		styleSeparator: '=',
		styleQuote: '"',
		offset: 0
	};
	
	var startTag = /^<([\w\:\-]+)((?:\s+[\w\-:]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)>/m;
	
	var XMLEditContainer = require('editTree').EditContainer.extend({
		initialize: function(source, options) {
			_.defaults(this.options, defaultOptions);
			this._positions.name = 1;
			
			var attrToken = null;
			var tokens = require('xmlParser').parse(source);
			var range = require('range');
			
			_.each(tokens, function(token) {
				token.value = range.create(token).substring(source);
				switch (token.type) {
					case 'tag':
						if (/^<[^\/]+/.test(token.value)) {
							this._name = token.value.substring(1);
						}
						break;
						
					case 'attribute':
						// add empty attribute
						if (attrToken) {
							this._children.push(new XMLEditElement(this, attrToken));
						}
						
						attrToken = token;
						break;
						
					case 'string':
						this._children.push(new XMLEditElement(this, attrToken, token));
						attrToken = null;
						break;
				}
			}, this);
			
			if (attrToken) {
				this._children.push(new XMLEditElement(this, attrToken));
			}
			
			this._saveStyle();
		},
		
		/**
		 * Remembers all styles of properties
		 * @private
		 */
		_saveStyle: function() {
			var start = this.nameRange().end;
			var source = this.source;
			
			_.each(this.list(), /** @param {EditElement} p */ function(p) {
				p.styleBefore = source.substring(start, p.namePosition());
				
				if (p.valuePosition() !== -1) {
					p.styleSeparator = source.substring(p.namePosition() + p.name().length, p.valuePosition() - p.styleQuote.length);
				}
				
				start = p.range().end;
			});
		},
		
		/**
		 * Adds new attribute 
		 * @param {String} name Property name
		 * @param {String} value Property value
		 * @param {Number} pos Position at which to insert new property. By 
		 * default the property is inserted at the end of rule 
		 */
		add: function(name, value, pos) {
			var list = this.list();
			var start = this.nameRange().end;
			var editTree = require('editTree');
			var styles = _.pick(this.options, 'styleBefore', 'styleSeparator', 'styleQuote');
			
			if (_.isUndefined(pos))
				pos = list.length;
			
			
			/** @type XMLEditAttribute */
			var donor = list[pos];
			if (donor) {
				start = donor.fullRange().start;
			} else if ((donor = list[pos - 1])) {
				start = donor.range().end;
			}
			
			if (donor) {
				styles = _.pick(donor, 'styleBefore', 'styleSeparator', 'styleQuote');
			}
			
			value = styles.styleQuote + value + styles.styleQuote;
			
			var attribute = new XMLEditElement(this, 
					editTree.createToken(start + styles.styleBefore.length, name),
					editTree.createToken(start + styles.styleBefore.length + name.length 
							+ styles.styleSeparator.length, value)
					);
			
			_.extend(attribute, styles);
			
			// write new attribute into the source
			this._updateSource(attribute.styleBefore + attribute.toString(), start);
			
			// insert new attribute
			this._children.splice(pos, 0, attribute);
			return attribute;
		}
	});
	
	var XMLEditElement = require('editTree').EditElement.extend({
		initialize: function(parent, nameToken, valueToken) {
			this.styleBefore = parent.options.styleBefore;
			this.styleSeparator = parent.options.styleSeparator;
			
			var value = '', quote = parent.options.styleQuote;
			if (valueToken) {
				value = valueToken.value;
				quote = value.charAt(0);
				if (quote == '"' || quote == "'") {
					value = value.substring(1);
				} else {
					quote = '';
				}
				
				if (quote && value.charAt(value.length - 1) == quote) {
					value = value.substring(0, value.length - 1);
				}
			}
			
			this.styleQuote = quote;
			
			this._value = value;
			this._positions.value = valueToken ? valueToken.start + quote.length : -1;
		},
		
		/**
		 * Returns full rule range, with indentation
		 * @param {Boolean} isAbsolute Return absolute range (with respect of
		 * rule offset)
		 * @returns {Range}
		 */
		fullRange: function(isAbsolute) {
			var r = this.range(isAbsolute);
			r.start -= this.styleBefore.length;
			return r;
		},
		
		toString: function() {
			return this.name() + this.styleSeparator
				+ this.styleQuote + this.value() + this.styleQuote;
		}
	});
	
	return {
		/**
		 * Parses HTML element into editable tree
		 * @param {String} source
		 * @param {Object} options
		 * @memberOf emmet.htmlEditTree
		 * @returns {EditContainer}
		 */
		parse: function(source, options) {
			return new XMLEditContainer(source, options);
		},
		
		/**
		 * Extract and parse HTML from specified position in <code>content</code> 
		 * @param {String} content CSS source code
		 * @param {Number} pos Character position where to start source code extraction
		 * @returns {XMLEditElement}
		 */
		parseFromPosition: function(content, pos, isBackward) {
			var bounds = this.extractTag(content, pos, isBackward);
			if (!bounds || !bounds.inside(pos))
				// no matching HTML tag or caret outside tag bounds
				return null;
			
			return this.parse(bounds.substring(content), {
				offset: bounds.start
			});
		},
		
		/**
		 * Extracts nearest HTML tag range from <code>content</code>, starting at 
		 * <code>pos</code> position
		 * @param {String} content
		 * @param {Number} pos
		 * @param {Boolean} isBackward
		 * @returns {Range}
		 */
		extractTag: function(content, pos, isBackward) {
			var len = content.length, i;
			var range = require('range');
			
			// max extraction length. I don't think there may be tags larger 
			// than 2000 characters length
			var maxLen = Math.min(2000, len);
			
			/** @type Range */
			var r = null;
			
			var match = function(pos) {
				var m;
				if (content.charAt(pos) == '<' && (m = content.substr(pos, maxLen).match(startTag)))
					return range.create(pos, m[0]);
			};
			
			// lookup backward, in case we are inside tag already
			for (i = pos; i >= 0; i--) {
				if ((r = match(i))) break;
			}
			
			if (r && (r.inside(pos) || isBackward))
				return r;
			
			if (!r && isBackward)
				return null;
			
			// search forward
			for (i = pos; i < len; i++) {
				if ((r = match(i)))
					return r;
			}
		}
	};
});/**
 * 'Expand abbreviation' editor action: extracts abbreviation from current caret 
 * position and replaces it with formatted output. 
 * <br><br>
 * This behavior can be overridden with custom handlers which can perform 
 * different actions when 'Expand Abbreviation' action is called.
 * For example, a CSS gradient handler that produces vendor-prefixed gradient
 * definitions registers its own expand abbreviation handler.  
 *  
 * @constructor
 * @memberOf __expandAbbreviationActionDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('expandAbbreviation', function(require, _) {
	/**
	 * @type HandlerList List of registered handlers
	 */
	var handlers = require('handlerList').create();
	
	/** Back-reference to module */
	var module = null;
	
	var actions = require('actions');
	/**
	 * 'Expand abbreviation' editor action 
	 * @param {IEmmetEditor} editor Editor instance
	 * @param {String} syntax Syntax type (html, css, etc.)
	 * @param {String} profile Output profile name (html, xml, xhtml)
	 * @return {Boolean} Returns <code>true</code> if abbreviation was expanded 
	 * successfully
	 */
	actions.add('expand_abbreviation', function(editor, syntax, profile) {
		var args = _.toArray(arguments);
		
	/*
		DW Changes.
		If DW has suplied the syntx, use the same.
	*/	
		
		if(args[1] != "") {
			args[2] = null;
		}
		else {
			// if the IP is within first 1000 lines, let the usual flow continue.
			var info = require('editorUtils').outputInfo(editor, syntax, profile);
			args[1] = info.syntax;
			args[2] = info.profile;
		}
		
		return handlers.exec(false, args);
	});
	
	/**
	 * A special version of <code>expandAbbreviation</code> function: if it can't
	 * find abbreviation, it will place Tab character at caret position
	 * @param {IEmmetEditor} editor Editor instance
	 * @param {String} syntax Syntax type (html, css, etc.)
	 * @param {String} profile Output profile name (html, xml, xhtml)
	 */
	actions.add('expand_abbreviation_with_tab', function(editor, syntax, profile) {
		var sel = editor.getSelection();
		var indent = require('resources').getVariable('indentation');
		if (sel) {
			// indent selection
			var utils = require('utils');
			var selRange = require('range').create(editor.getSelectionRange());
			var content = utils.padString(sel, indent);
			
			editor.replaceContent(indent + '${0}', editor.getCaretPos());
			var replaceRange = require('range').create(editor.getCaretPos(), selRange.length());
			editor.replaceContent(content, replaceRange.start, replaceRange.end, true);
			editor.createSelection(replaceRange.start, replaceRange.start + content.length);
			return true;
		}
		
		if (!actions.run('expand_abbreviation', editor, syntax, profile)) {
			editor.replaceContent(indent, editor.getCaretPos());
		}
		
		return true;
	}, {hidden: true});
	
	// XXX setup default handler
	/**
	 * Extracts abbreviation from current caret 
	 * position and replaces it with formatted output 
	 * @param {IEmmetEditor} editor Editor instance
	 * @param {String} syntax Syntax type (html, css, etc.)
	 * @param {String} profile Output profile name (html, xml, xhtml)
	 * @return {Boolean} Returns <code>true</code> if abbreviation was expanded 
	 * successfully
	 */
	handlers.add(function(editor, syntax, profile) {
		var caretPos = editor.getSelectionRange().end;
		var abbr = module.findAbbreviation(editor);
			
		if (abbr) {
				/* DW Changes - removing the the last argument require('actionUtils').captureContext(editor).
				This method figureout the html element inside IP is present at the time expansion. 
				However that element is not used during the actual expansion.
				The method captureContext takes lot of time figureout the node for bigger documents. 
				*/
			var content = emmet.expandAbbreviation(abbr, syntax, profile);
			if (content) {
				editor.replaceContent(content, caretPos - abbr.length, caretPos);
				return true;
			}
		}
		
		return false;
	}, {order: -1});
	
	return module = {
		/**
		 * Adds custom expand abbreviation handler. The passed function should 
		 * return <code>true</code> if it was performed successfully, 
		 * <code>false</code> otherwise.
		 * 
		 * Added handlers will be called when 'Expand Abbreviation' is called
		 * in order they were added
		 * @memberOf expandAbbreviation
		 * @param {Function} fn
		 * @param {Object} options
		 */
		addHandler: function(fn, options) {
			handlers.add(fn, options);
		},
		
		/**
		 * Removes registered handler
		 * @returns
		 */
		removeHandler: function(fn) {
			handlers.remove(fn);
		},
		
		/**
		 * Search for abbreviation in editor from current caret position
		 * @param {IEmmetEditor} editor Editor instance
		 * @return {String}
		 */
		findAbbreviation: function(editor) {
			/** @type Range */
			var range = require('range').create(editor.getSelectionRange());
			var content = String(editor.getContent());
			if (range.length()) {
				// abbreviation is selected by user
				return range.substring(content);
			}
			
			// search for new abbreviation from current caret position
			var curLine = editor.getCurrentLineRange();
			return require('actionUtils').extractAbbreviation(content.substring(curLine.start, range.start));
		}
	};
});/**
 * Action that wraps content with abbreviation. For convenience, action is 
 * defined as reusable module
 * @constructor
 * @memberOf __wrapWithAbbreviationDefine
 */
emmet.define('wrapWithAbbreviation', function(require, _) {
	/** Back-references to current module */
	var module = null;
	
	/**
	 * Wraps content with abbreviation
	 * @param {IEmmetEditor} Editor instance
	 * @param {String} abbr Abbreviation to wrap with
	 * @param {String} syntax Syntax type (html, css, etc.)
	 * @param {String} profile Output profile name (html, xml, xhtml)
	 */
	require('actions').add('wrap_with_abbreviation', function (editor, abbr, syntax, profile) {
		var info = require('editorUtils').outputInfo(editor, syntax, profile);
		var utils = require('utils');
		/** @type emmet.editorUtils */
		var editorUtils = require('editorUtils');
		abbr = abbr || editor.prompt("Enter abbreviation");
		
		if (!abbr) 
			return null;
		
		abbr = String(abbr);
		
		var range = require('range').create(editor.getSelectionRange());
		
		if (!range.length()) {
			// no selection, find tag pair
			var match = require('htmlMatcher').tag(info.content, range.start);
			if (!match) {  // nothing to wrap
				return false;
			}
			
			range = utils.narrowToNonSpace(info.content, match.range);
		}
		
		var newContent = utils.escapeText(range.substring(info.content));
		var result = module
			.wrap(abbr, editorUtils.unindent(editor, newContent), info.syntax, 
					info.profile, require('actionUtils').captureContext(editor));
		
		if (result) {
			editor.replaceContent(result, range.start, range.end);
			return true;
		}
		
		return false;
	});
	
	return module = {
		/**
		 * Wraps passed text with abbreviation. Text will be placed inside last
		 * expanded element
		 * @memberOf wrapWithAbbreviation
		 * @param {String} abbr Abbreviation
		 * @param {String} text Text to wrap
		 * @param {String} syntax Document type (html, xml, etc.). Default is 'html'
		 * @param {String} profile Output profile's name. Default is 'plain'
		 * @param {Object} contextNode Context node inside which abbreviation
		 * is wrapped. It will be used as a reference for node name resolvers
		 * @return {String}
		 */
		wrap: function(abbr, text, syntax, profile, contextNode) {
			/** @type emmet.filters */
			var filters = require('filters');
			/** @type emmet.utils */
			var utils = require('utils');
			
			syntax = syntax || emmet.defaultSyntax();
			profile = require('profile').get(profile, syntax);
			
			require('tabStops').resetTabstopIndex();
			
			var data = filters.extractFromAbbreviation(abbr);
			var parsedTree = require('abbreviationParser').parse(data[0], {
				syntax: syntax,
				pastedContent: text,
				contextNode: contextNode
			});
			if (parsedTree) {
				var filtersList = filters.composeList(syntax, profile, data[1]);
				filters.apply(parsedTree, filtersList, profile);
				return utils.replaceVariables(parsedTree.toString());
			}
			
			return null;
		}
	};
});/**
 * Toggles HTML and CSS comments depending on current caret context. Unlike
 * the same action in most editors, this action toggles comment on currently
 * matched item—HTML tag or CSS selector—when nothing is selected.
 * 
 * @param {Function} require
 * @param {Underscore} _
 * @memberOf __toggleCommentAction
 * @constructor
 */
emmet.exec(function(require, _) {
	/**
	 * Toggle HTML comment on current selection or tag
	 * @param {IEmmetEditor} editor
	 * @return {Boolean} Returns <code>true</code> if comment was toggled
	 */
	function toggleHTMLComment(editor) {
		/** @type Range */
		var range = require('range').create(editor.getSelectionRange());
		var info = require('editorUtils').outputInfo(editor);
			
		if (!range.length()) {
			// no selection, find matching tag
			var tag = require('htmlMatcher').tag(info.content, editor.getCaretPos());
			if (tag) { // found pair
				range = tag.outerRange;
			}
		}
		
		return genericCommentToggle(editor, '<!--', '-->', range);
	}

	/**
	 * Simple CSS commenting
	 * @param {IEmmetEditor} editor
	 * @return {Boolean} Returns <code>true</code> if comment was toggled
	 */
	function toggleCSSComment(editor) {
		/** @type Range */
		var range = require('range').create(editor.getSelectionRange());
		var info = require('editorUtils').outputInfo(editor);
			
		if (!range.length()) {
			// no selection, try to get current rule
			/** @type CSSRule */
			var rule = require('cssEditTree').parseFromPosition(info.content, editor.getCaretPos());
			if (rule) {
				var property = cssItemFromPosition(rule, editor.getCaretPos());
				range = property 
					? property.range(true) 
					: require('range').create(rule.nameRange(true).start, rule.source);
			}
		}
		
		if (!range.length()) {
			// still no selection, get current line
			range = require('range').create(editor.getCurrentLineRange());
			require('utils').narrowToNonSpace(info.content, range);
		}
		
		return genericCommentToggle(editor, '/*', '*/', range);
	}
	
	/**
	 * Returns CSS property from <code>rule</code> that matches passed position
	 * @param {EditContainer} rule
	 * @param {Number} absPos
	 * @returns {EditElement}
	 */
	function cssItemFromPosition(rule, absPos) {
		// do not use default EditContainer.itemFromPosition() here, because
		// we need to make a few assumptions to make CSS commenting more reliable
		var relPos = absPos - (rule.options.offset || 0);
		var reSafeChar = /^[\s\n\r]/;
		return _.find(rule.list(), function(item) {
			if (item.range().end === relPos) {
				// at the end of property, but outside of it
				// if there’s a space character at current position,
				// use current property
				return reSafeChar.test(rule.source.charAt(relPos));
			}
			
			return item.range().inside(relPos);
		});
	}

	/**
	 * Search for nearest comment in <code>str</code>, starting from index <code>from</code>
	 * @param {String} text Where to search
	 * @param {Number} from Search start index
	 * @param {String} start_token Comment start string
	 * @param {String} end_token Comment end string
	 * @return {Range} Returns null if comment wasn't found
	 */
	function searchComment(text, from, startToken, endToken) {
		var commentStart = -1;
		var commentEnd = -1;
		
		var hasMatch = function(str, start) {
			return text.substr(start, str.length) == str;
		};
			
		// search for comment start
		while (from--) {
			if (hasMatch(startToken, from)) {
				commentStart = from;
				break;
			}
		}
		
		if (commentStart != -1) {
			// search for comment end
			from = commentStart;
			var contentLen = text.length;
			while (contentLen >= from++) {
				if (hasMatch(endToken, from)) {
					commentEnd = from + endToken.length;
					break;
				}
			}
		}
		
		return (commentStart != -1 && commentEnd != -1) 
			? require('range').create(commentStart, commentEnd - commentStart) 
			: null;
	}

	/**
	 * Generic comment toggling routine
	 * @param {IEmmetEditor} editor
	 * @param {String} commentStart Comment start token
	 * @param {String} commentEnd Comment end token
	 * @param {Range} range Selection range
	 * @return {Boolean}
	 */
	function genericCommentToggle(editor, commentStart, commentEnd, range) {
		var editorUtils = require('editorUtils');
		var content = editorUtils.outputInfo(editor).content;
		var caretPos = editor.getCaretPos();
		var newContent = null;
		
		var utils = require('utils');
			
		/**
		 * Remove comment markers from string
		 * @param {Sting} str
		 * @return {String}
		 */
		function removeComment(str) {
			return str
				.replace(new RegExp('^' + utils.escapeForRegexp(commentStart) + '\\s*'), function(str){
					caretPos -= str.length;
					return '';
				}).replace(new RegExp('\\s*' + utils.escapeForRegexp(commentEnd) + '$'), '');
		}
		
		// first, we need to make sure that this substring is not inside 
		// comment
		var commentRange = searchComment(content, caretPos, commentStart, commentEnd);
		if (commentRange && commentRange.overlap(range)) {
			// we're inside comment, remove it
			range = commentRange;
			newContent = removeComment(range.substring(content));
		} else {
			// should add comment
			// make sure that there's no comment inside selection
			newContent = commentStart + ' ' +
				range.substring(content)
					.replace(new RegExp(utils.escapeForRegexp(commentStart) + '\\s*|\\s*' + utils.escapeForRegexp(commentEnd), 'g'), '') +
				' ' + commentEnd;
				
			// adjust caret position
			caretPos += commentStart.length + 1;
		}

		// replace editor content
		if (newContent !== null) {
			newContent = utils.escapeText(newContent);
			editor.setCaretPos(range.start);
			editor.replaceContent(editorUtils.unindent(editor, newContent), range.start, range.end);
			editor.setCaretPos(caretPos);
			return true;
		}
		
		return false;
	}
	
	/**
	 * Toggle comment on current editor's selection or HTML tag/CSS rule
	 * @param {IEmmetEditor} editor
	 */
	require('actions').add('toggle_comment', function(editor) {
		var info = require('editorUtils').outputInfo(editor);
		if (info.syntax == 'css') {
			// in case our editor is good enough and can recognize syntax from 
			// current token, we have to make sure that cursor is not inside
			// 'style' attribute of html element
			var caretPos = editor.getCaretPos();
			var tag = require('htmlMatcher').tag(info.content, caretPos);
			if (tag && tag.open.range.inside(caretPos)) {
				info.syntax = 'html';
			}
		}
		
		if (info.syntax == 'css')
			return toggleCSSComment(editor);
		
		return toggleHTMLComment(editor);
	});
});/**
 * Move between next/prev edit points. 'Edit points' are places between tags 
 * and quotes of empty attributes in html
 * @constructor
 * 
 * @memberOf __editPointActionDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	/**
	 * Search for new caret insertion point
	 * @param {IEmmetEditor} editor Editor instance
	 * @param {Number} inc Search increment: -1 — search left, 1 — search right
	 * @param {Number} offset Initial offset relative to current caret position
	 * @return {Number} Returns -1 if insertion point wasn't found
	 */
	function findNewEditPoint(editor, inc, offset) {
		inc = inc || 1;
		offset = offset || 0;
		
		var curPoint = editor.getCaretPos() + offset;
		var content = String(editor.getContent());
		var maxLen = content.length;
		var nextPoint = -1;
		var reEmptyLine = /^\s+$/;
		
		function getLine(ix) {
			var start = ix;
			while (start >= 0) {
				var c = content.charAt(start);
				if (c == '\n' || c == '\r')
					break;
				start--;
			}
			
			return content.substring(start, ix);
		}
			
		while (curPoint <= maxLen && curPoint >= 0) {
			curPoint += inc;
			var curChar = content.charAt(curPoint);
			var nextChar = content.charAt(curPoint + 1);
			var prevChar = content.charAt(curPoint - 1);
				
			switch (curChar) {
				case '"':
				case '\'':
					if (nextChar == curChar && prevChar == '=') {
						// empty attribute
						nextPoint = curPoint + 1;
					}
					break;
				case '>':
					if (nextChar == '<') {
						// between tags
						nextPoint = curPoint + 1;
					}
					break;
				case '\n':
				case '\r':
					// empty line
					if (reEmptyLine.test(getLine(curPoint - 1))) {
						nextPoint = curPoint;
					}
					break;
			}
			
			if (nextPoint != -1)
				break;
		}
		
		return nextPoint;
	}
	
	/** @type emmet.actions */
	var actions = require('actions');
	
	/**
	 * Move caret to previous edit point
	 * @param {IEmmetEditor} editor Editor instance
	 */
	actions.add('prev_edit_point', function(editor) {
		var curPos = editor.getCaretPos();
		var newPoint = findNewEditPoint(editor, -1);
			
		if (newPoint == curPos)
			// we're still in the same point, try searching from the other place
			newPoint = findNewEditPoint(editor, -1, -2);
		
		if (newPoint != -1) {
			editor.setCaretPos(newPoint);
			return true;
		}
		
		return false;
	}, {label: 'Previous Edit Point'});
	
	/**
	 * Move caret to next edit point
	 * @param {IEmmetEditor} editor Editor instance
	 */
	actions.add('next_edit_point', function(editor) {
		var newPoint = findNewEditPoint(editor, 1);
		if (newPoint != -1) {
			editor.setCaretPos(newPoint);
			return true;
		}
		
		return false;
	});
});/**
 * Actions that use stream parsers and tokenizers for traversing:
 * -- Search for next/previous items in HTML
 * -- Search for next/previous items in CSS
 * @constructor
 * @memberOf __selectItemActionDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	var startTag = /^<([\w\:\-]+)((?:\s+[\w\-:]+(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)>/;
	
	/**
	 * Generic function for searching for items to select
	 * @param {IEmmetEditor} editor
	 * @param {Boolean} isBackward Search backward (search forward otherwise)
	 * @param {Function} extractFn Function that extracts item content
	 * @param {Function} rangeFn Function that search for next token range
	 */
	function findItem(editor, isBackward, extractFn, rangeFn) {
		var range = require('range');
		var content = require('editorUtils').outputInfo(editor).content;
		
		var contentLength = content.length;
		var itemRange, rng;
		/** @type Range */
		var prevRange = range.create(-1, 0);
		/** @type Range */
		var sel = range.create(editor.getSelectionRange());
		
		var searchPos = sel.start, loop = 100000; // endless loop protection
		while (searchPos >= 0 && searchPos < contentLength && --loop > 0) {
			if ( (itemRange = extractFn(content, searchPos, isBackward)) ) {
				if (prevRange.equal(itemRange)) {
					break;
				}
				
				prevRange = itemRange.clone();
				rng = rangeFn(itemRange.substring(content), itemRange.start, sel.clone());
				
				if (rng) {
					editor.createSelection(rng.start, rng.end);
					return true;
				} else {
					searchPos = isBackward ? itemRange.start : itemRange.end - 1;
				}
			}
			
			searchPos += isBackward ? -1 : 1;
		}
		
		return false;
	}
	
	// XXX HTML section
	
	/**
	 * Find next HTML item
	 * @param {IEmmetEditor} editor
	 */
	function findNextHTMLItem(editor) {
		var isFirst = true;
		return findItem(editor, false, function(content, searchPos){
			if (isFirst) {
				isFirst = false;
				return findOpeningTagFromPosition(content, searchPos);
			} else {
				return getOpeningTagFromPosition(content, searchPos);
			}
		}, function(tag, offset, selRange) {
			return getRangeForHTMLItem(tag, offset, selRange, false);
		});
	}
	
	/**
	 * Find previous HTML item
	 * @param {IEmmetEditor} editor
	 */
	function findPrevHTMLItem(editor) {
		return findItem(editor, true, getOpeningTagFromPosition, function (tag, offset, selRange) {
			return getRangeForHTMLItem(tag, offset, selRange, true);
		});
	}
	
	/**
	 * Creates possible selection ranges for HTML tag
	 * @param {String} source Original HTML source for tokens
	 * @param {Array} tokens List of HTML tokens
	 * @returns {Array}
	 */
	function makePossibleRangesHTML(source, tokens, offset) {
		offset = offset || 0;
		var range = require('range');
		var result = [];
		var attrStart = -1, attrName = '', attrValue = '', attrValueRange, tagName;
		_.each(tokens, function(tok) {
			switch (tok.type) {
				case 'tag':
					tagName = source.substring(tok.start, tok.end);
					if (/^<[\w\:\-]/.test(tagName)) {
						// add tag name
						result.push(range.create({
							start: tok.start + 1, 
							end: tok.end
						}));
					}
					break;
				case 'attribute':
					attrStart = tok.start;
					attrName = source.substring(tok.start, tok.end);
					break;
					
				case 'string':
					// attribute value
					// push full attribute first
					result.push(range.create(attrStart, tok.end - attrStart));
					
					attrValueRange = range.create(tok);
					attrValue = attrValueRange.substring(source);
					
					// is this a quoted attribute?
					if (isQuote(attrValue.charAt(0)))
						attrValueRange.start++;
					
					if (isQuote(attrValue.charAt(attrValue.length - 1)))
						attrValueRange.end--;
					
					result.push(attrValueRange);
					
					if (attrName == 'class') {
						result = result.concat(classNameRanges(attrValueRange.substring(source), attrValueRange.start));
					}
					
					break;
			}
		});
		
		// offset ranges
		_.each(result, function(r) {
			r.shift(offset);
		});
		
		return _.chain(result)
			.filter(function(item) {        // remove empty
				return !!item.length();
			})
			.uniq(false, function(item) {   // remove duplicates
				return item.toString();
			})
			.value();
	}
	
	/**
	 * Returns ranges of class names in "class" attribute value
	 * @param {String} className
	 * @returns {Array}
	 */
	function classNameRanges(className, offset) {
		offset = offset || 0;
		var result = [];
		/** @type StringStream */
		var stream = require('stringStream').create(className);
		var range = require('range');
		
		// skip whitespace
		stream.eatSpace();
		stream.start = stream.pos;
		
		var ch;
		while ((ch = stream.next())) {
			if (/[\s\u00a0]/.test(ch)) {
				result.push(range.create(stream.start + offset, stream.pos - stream.start - 1));
				stream.eatSpace();
				stream.start = stream.pos;
			}
		}
		
		result.push(range.create(stream.start + offset, stream.pos - stream.start));
		return result;
	}
	
	/**
	 * Returns best HTML tag range match for current selection
	 * @param {String} tag Tag declaration
	 * @param {Number} offset Tag's position index inside content
	 * @param {Range} selRange Selection range
	 * @return {Range} Returns range if next item was found, <code>null</code> otherwise
	 */
	function getRangeForHTMLItem(tag, offset, selRange, isBackward) {
		var ranges = makePossibleRangesHTML(tag, require('xmlParser').parse(tag), offset);
		
		if (isBackward)
			ranges.reverse();
		
		// try to find selected range
		var curRange = _.find(ranges, function(r) {
			return r.equal(selRange);
		});
		
		if (curRange) {
			var ix = _.indexOf(ranges, curRange);
			if (ix < ranges.length - 1)
				return ranges[ix + 1];
			
			return null;
		}
		
		// no selected range, find nearest one
		if (isBackward)
			// search backward
			return _.find(ranges, function(r) {
				return r.start < selRange.start;
			});
		
		// search forward
		// to deal with overlapping ranges (like full attribute definition
		// and attribute value) let's find range under caret first
		if (!curRange) {
			var matchedRanges = _.filter(ranges, function(r) {
				return r.inside(selRange.end);
			});
			
			if (matchedRanges.length > 1)
				return matchedRanges[1];
		}
		
		
		return _.find(ranges, function(r) {
			return r.end > selRange.end;
		});
	}
	
	/**
	 * Search for opening tag in content, starting at specified position
	 * @param {String} html Where to search tag
	 * @param {Number} pos Character index where to start searching
	 * @return {Range} Returns range if valid opening tag was found,
	 * <code>null</code> otherwise
	 */
	function findOpeningTagFromPosition(html, pos) {
		var tag;
		while (pos >= 0) {
			if ((tag = getOpeningTagFromPosition(html, pos)))
				return tag;
			pos--;
		}
		
		return null;
	}
	
	/**
	 * @param {String} html Where to search tag
	 * @param {Number} pos Character index where to start searching
	 * @return {Range} Returns range if valid opening tag was found,
	 * <code>null</code> otherwise
	 */
	function getOpeningTagFromPosition(html, pos) {
		var m;
		if (html.charAt(pos) == '<' && (m = html.substring(pos, html.length).match(startTag))) {
			return require('range').create(pos, m[0]);
		}
	}
	
	function isQuote(ch) {
		return ch == '"' || ch == "'";
	}
	
	/**
	 * Makes all possible selection ranges for specified CSS property
	 * @param {CSSProperty} property
	 * @returns {Array}
	 */
	function makePossibleRangesCSS(property) {
		// find all possible ranges, sorted by position and size
		var valueRange = property.valueRange(true);
		var result = [property.range(true), valueRange];
		var stringStream = require('stringStream');
		var cssEditTree = require('cssEditTree');
		var range = require('range');
		
		// locate parts of complex values.
		// some examples:
		// – 1px solid red: 3 parts
		// – arial, sans-serif: enumeration, 2 parts
		// – url(image.png): function value part
		var value = property.value();
		_.each(property.valueParts(), function(r) {
			// add absolute range
			var clone = r.clone();
			result.push(clone.shift(valueRange.start));
			
			/** @type StringStream */
			var stream = stringStream.create(r.substring(value));
			if (stream.match(/^[\w\-]+\(/, true)) {
				// we have a function, find values in it.
				// but first add function contents
				stream.start = stream.pos;
				stream.skipToPair('(', ')');
				var fnBody = stream.current();
				result.push(range.create(clone.start + stream.start, fnBody));
				
				// find parts
				_.each(cssEditTree.findParts(fnBody), function(part) {
					result.push(range.create(clone.start + stream.start + part.start, part.substring(fnBody)));
				});
			}
		});
		
		// optimize result: remove empty ranges and duplicates
		return _.chain(result)
			.filter(function(item) {
				return !!item.length();
			})
			.uniq(false, function(item) {
				return item.toString();
			})
			.value();
	}
	
	/**
	 * Tries to find matched CSS property and nearest range for selection
	 * @param {CSSRule} rule
	 * @param {Range} selRange
	 * @param {Boolean} isBackward
	 * @returns {Range}
	 */
	function matchedRangeForCSSProperty(rule, selRange, isBackward) {
		/** @type CSSProperty */
		var property = null;
		var possibleRanges, curRange = null, ix;
		var list = rule.list();
		var searchFn, nearestItemFn;
		
		if (isBackward) {
			list.reverse();
			searchFn = function(p) {
				return p.range(true).start <= selRange.start;
			};
			nearestItemFn = function(r) {
				return r.start < selRange.start;
			};
		} else {
			searchFn = function(p) {
				return p.range(true).end >= selRange.end;
			};
			nearestItemFn = function(r) {
				return r.end > selRange.start;
			};
		}
		
		// search for nearest to selection CSS property
		var eqSel = function(r) {
			return r.equal(selRange);
		};
		var inSel = function(r) {
			return r.inside(selRange.end);
		};
		while ((property = _.find(list, searchFn))) {
			possibleRanges = makePossibleRangesCSS(property);
			if (isBackward)
				possibleRanges.reverse();
			
			// check if any possible range is already selected
			curRange = _.find(possibleRanges, eqSel);
			
			if (!curRange) {
				// no selection, select nearest item
				var matchedRanges = _.filter(possibleRanges, inSel);
				
				if (matchedRanges.length > 1) {
					curRange = matchedRanges[1];
					break;
				}
				
				if ((curRange = _.find(possibleRanges, nearestItemFn)))
					break;
			} else {
				ix = _.indexOf(possibleRanges, curRange);
				if (ix != possibleRanges.length - 1) {
					curRange = possibleRanges[ix + 1];
					break;
				}
			}
			
			curRange = null;
			selRange.start = selRange.end = isBackward 
				? property.range(true).start - 1
				: property.range(true).end + 1;
		}
		
		return curRange;
	}
	
	function findNextCSSItem(editor) {
		return findItem(editor, false, require('cssEditTree').extractRule, getRangeForNextItemInCSS);
	}
	
	function findPrevCSSItem(editor) {
		return findItem(editor, true, require('cssEditTree').extractRule, getRangeForPrevItemInCSS);
	}
	
	/**
	 * Returns range for item to be selected in CSS after current caret 
	 * (selection) position
	 * @param {String} rule CSS rule declaration
	 * @param {Number} offset Rule's position index inside content
	 * @param {Range} selRange Selection range
	 * @return {Range} Returns range if next item was found, <code>null</code> otherwise
	 */
	function getRangeForNextItemInCSS(rule, offset, selRange) {
		var tree = require('cssEditTree').parse(rule, {
			offset: offset
		});
		
		// check if selector is matched
		var range = tree.nameRange(true);
		if (selRange.end < range.end) {
			return range;
		}
		
		return matchedRangeForCSSProperty(tree, selRange, false);
	}
	
	/**
	 * Returns range for item to be selected in CSS before current caret 
	 * (selection) position
	 * @param {String} rule CSS rule declaration
	 * @param {Number} offset Rule's position index inside content
	 * @param {Range} selRange Selection range
	 * @return {Range} Returns range if previous item was found, <code>null</code> otherwise
	 */
	function getRangeForPrevItemInCSS(rule, offset, selRange) {
		var tree = require('cssEditTree').parse(rule, {
			offset: offset
		});
		
		var curRange = matchedRangeForCSSProperty(tree, selRange, true);
		
		if (!curRange) {
			// no matched property, try to match selector
			var range = tree.nameRange(true);
			if (selRange.start > range.start) {
				return range;
			}
		}
		
		return curRange;
	}
	
	// XXX register actions
	var actions = require('actions');
	actions.add('select_next_item', function(editor){
		if (editor.getSyntax() == 'css')
			return findNextCSSItem(editor);
		else
			return findNextHTMLItem(editor);
	});
	
	actions.add('select_previous_item', function(editor){
		if (editor.getSyntax() == 'css')
			return findPrevCSSItem(editor);
		else
			return findPrevHTMLItem(editor);
	});
});/**
 * HTML pair matching (balancing) actions
 * @constructor
 * @memberOf __matchPairActionDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	/** @type emmet.actions */
	var actions = require('actions');
	var matcher = require('htmlMatcher');
	var lastMatch = null;
	
	/**
	 * Find and select HTML tag pair
	 * @param {IEmmetEditor} editor Editor instance
	 * @param {String} direction Direction of pair matching: 'in' or 'out'. 
	 * Default is 'out'
	 */
	function matchPair(editor, direction) {
		direction = String((direction || 'out').toLowerCase());
		var info = require('editorUtils').outputInfo(editor);
		
		var range = require('range');
		/** @type Range */
		var sel = range.create(editor.getSelectionRange());
		var content = info.content;
		
		// validate previous match
		if (lastMatch && !lastMatch.range.equal(sel)) {
			lastMatch = null;
		}
		
		if (lastMatch && sel.length()) {
			if (direction == 'in') {
				// user has previously selected tag and wants to move inward
				if (lastMatch.type == 'tag' && !lastMatch.close) {
					// unary tag was selected, can't move inward
					return false;
				} else {
					if (lastMatch.range.equal(lastMatch.outerRange)) {
						lastMatch.range = lastMatch.innerRange;
					} else {
						var narrowed = require('utils').narrowToNonSpace(content, lastMatch.innerRange);
						lastMatch = matcher.find(content, narrowed.start + 1);
						if (lastMatch && lastMatch.range.equal(sel) && lastMatch.outerRange.equal(sel)) {
							lastMatch.range = lastMatch.innerRange;
						}
					}
				}
			} else {
				if (
						!lastMatch.innerRange.equal(lastMatch.outerRange) 
						&& lastMatch.range.equal(lastMatch.innerRange) 
						&& sel.equal(lastMatch.range)) {
					lastMatch.range = lastMatch.outerRange;
				} else {
					lastMatch = matcher.find(content, sel.start);
					if (lastMatch && lastMatch.range.equal(sel) && lastMatch.innerRange.equal(sel)) {
						lastMatch.range = lastMatch.outerRange;
					}
				}
			}
		} else {
			lastMatch = matcher.find(content, sel.start);
		}
		
		if (lastMatch && !lastMatch.range.equal(sel)) {
			editor.createSelection(lastMatch.range.start, lastMatch.range.end);
			return true;
		}
		
		lastMatch = null;
		return false;
	}
	
	actions.add('match_pair', matchPair, {hidden: true});
	actions.add('match_pair_inward', function(editor){
		return matchPair(editor, 'in');
	}, {label: 'HTML/Match Pair Tag (inward)'});

	actions.add('match_pair_outward', function(editor){
		return matchPair(editor, 'out');
	}, {label: 'HTML/Match Pair Tag (outward)'});
	
	/**
	 * Moves caret to matching opening or closing tag
	 * @param {IEmmetEditor} editor
	 */
	actions.add('matching_pair', function(editor) {
		var content = String(editor.getContent());
		var caretPos = editor.getCaretPos();
		
		if (content.charAt(caretPos) == '<') 
			// looks like caret is outside of tag pair  
			caretPos++;
			
		var tag = matcher.tag(content, caretPos);
		if (tag && tag.close) { // exclude unary tags
			if (tag.open.range.inside(caretPos)) {
				editor.setCaretPos(tag.close.range.start);
			} else {
				editor.setCaretPos(tag.open.range.start);
			}
			
			return true;
		}
		
		return false;
	}, {label: 'HTML/Go To Matching Tag Pair'});
});/**
 * Gracefully removes tag under cursor
 * 
 * @param {Function} require
 * @param {Underscore} _ 
 */
emmet.exec(function(require, _) {
	require('actions').add('remove_tag', function(editor) {
		var utils = require('utils');
		var info = require('editorUtils').outputInfo(editor);
		
		// search for tag
		var tag = require('htmlMatcher').tag(info.content, editor.getCaretPos());
		if (tag) {
			if (!tag.close) {
				// simply remove unary tag
				editor.replaceContent(utils.getCaretPlaceholder(), tag.range.start, tag.range.end);
			} else {
				// remove tag and its newlines
				/** @type Range */
				var tagContentRange = utils.narrowToNonSpace(info.content, tag.innerRange);
				/** @type Range */
				var startLineBounds = utils.findNewlineBounds(info.content, tagContentRange.start);
				var startLinePad = utils.getLinePadding(startLineBounds.substring(info.content));
				var tagContent = tagContentRange.substring(info.content);
				
				tagContent = utils.unindentString(tagContent, startLinePad);
				editor.replaceContent(utils.getCaretPlaceholder() + utils.escapeText(tagContent), tag.outerRange.start, tag.outerRange.end);
			}
			
			return true;
		}
		
		return false;
	}, {label: 'HTML/Remove Tag'});
});
/**
 * Splits or joins tag, e.g. transforms it into a short notation and vice versa:<br>
 * &lt;div&gt;&lt;/div&gt; → &lt;div /&gt; : join<br>
 * &lt;div /&gt; → &lt;div&gt;&lt;/div&gt; : split
 * @param {Function} require
 * @param {Underscore} _
 * @memberOf __splitJoinTagAction
 * @constructor
 */
emmet.exec(function(require, _) {
	/**
	 * @param {IEmmetEditor} editor
	 * @param {Object} profile
	 * @param {Object} tag
	 */
	function joinTag(editor, profile, tag) {
		/** @type emmet.utils */
		var utils = require('utils');
		
		// empty closing slash is a nonsense for this action
		var slash = profile.selfClosing() || ' /';
		var content = tag.open.range.substring(tag.source).replace(/\s*>$/, slash + '>');
		
		var caretPos = editor.getCaretPos();
		
		// update caret position
		if (content.length + tag.outerRange.start < caretPos) {
			caretPos = content.length + tag.outerRange.start;
		}
		
		content = utils.escapeText(content);
		editor.replaceContent(content, tag.outerRange.start, tag.outerRange.end);
		editor.setCaretPos(caretPos);
		return true;
	}
	
	function splitTag(editor, profile, tag) {
		/** @type emmet.utils */
		var utils = require('utils');
		
		var nl = utils.getNewline();
		var pad = require('resources').getVariable('indentation');
		var caretPos = editor.getCaretPos();
		
		// define tag content depending on profile
		var tagContent = (profile.tag_nl === true) ? nl + pad + nl : '';
		var content = tag.outerContent().replace(/\s*\/>$/, '>');
		caretPos = tag.outerRange.start + content.length;
		content += tagContent + '</' + tag.open.name + '>';
		
		content = utils.escapeText(content);
		editor.replaceContent(content, tag.outerRange.start, tag.outerRange.end);
		editor.setCaretPos(caretPos);
		return true;
	}
	
	require('actions').add('split_join_tag', function(editor, profileName) {
		var matcher = require('htmlMatcher');
		
		var info = require('editorUtils').outputInfo(editor, null, profileName);
		var profile = require('profile').get(info.profile);
		
		// find tag at current position
		var tag = matcher.tag(info.content, editor.getCaretPos());
		if (tag) {
			return tag.close 
				? joinTag(editor, profile, tag) 
				: splitTag(editor, profile, tag);
		}
		
		return false;
	}, {label: 'HTML/Split\\Join Tag Declaration'});
});/**
 * Reflect CSS value: takes rule's value under caret and pastes it for the same 
 * rules with vendor prefixes
 * @constructor
 * @memberOf __reflectCSSActionDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('reflectCSSValue', function(require, _) {
	/**
	 * @type HandlerList List of registered handlers
	 */
	var handlers = require('handlerList').create();
	
	require('actions').add('reflect_css_value', function(editor) {
		if (editor.getSyntax() != 'css') return false;
		
		return require('actionUtils').compoundUpdate(editor, doCSSReflection(editor));
	}, {label: 'CSS/Reflect Value'});
	
	function doCSSReflection(editor) {
		/** @type emmet.cssEditTree */
		var cssEditTree = require('cssEditTree');
		var outputInfo = require('editorUtils').outputInfo(editor);
		var caretPos = editor.getCaretPos();
		
		var cssRule = cssEditTree.parseFromPosition(outputInfo.content, caretPos);
		if (!cssRule) return;
		
		var property = cssRule.itemFromPosition(caretPos, true);
		// no property under cursor, nothing to reflect
		if (!property) return;
		
		var oldRule = cssRule.source;
		var offset = cssRule.options.offset;
		var caretDelta = caretPos - offset - property.range().start;
		
		handlers.exec(false, [property]);
		
		if (oldRule !== cssRule.source) {
			return {
				data:  cssRule.source,
				start: offset,
				end:   offset + oldRule.length,
				caret: offset + property.range().start + caretDelta
			};
		}
	}
	
	/**
	 * Returns regexp that should match reflected CSS property names
	 * @param {String} name Current CSS property name
	 * @return {RegExp}
	 */
	function getReflectedCSSName(name) {
		name = require('cssEditTree').baseName(name);
		var vendorPrefix = '^(?:\\-\\w+\\-)?', m;
		
		if (name == 'opacity' || name == 'filter') {
			return new RegExp(vendorPrefix + '(?:opacity|filter)$');
		} else if ((m = name.match(/^border-radius-(top|bottom)(left|right)/))) {
			// Mozilla-style border radius
			return new RegExp(vendorPrefix + '(?:' + name + '|border-' + m[1] + '-' + m[2] + '-radius)$');
		} else if ((m = name.match(/^border-(top|bottom)-(left|right)-radius/))) { 
			return new RegExp(vendorPrefix + '(?:' + name + '|border-radius-' + m[1] + m[2] + ')$');
		}
		
		return new RegExp(vendorPrefix + name + '$');
	}
	
	/**
	 * Reflects value from <code>donor</code> into <code>receiver</code>
	 * @param {CSSProperty} donor Donor CSS property from which value should
	 * be reflected
	 * @param {CSSProperty} receiver Property that should receive reflected 
	 * value from donor
	 */
	function reflectValue(donor, receiver) {
		var value = getReflectedValue(donor.name(), donor.value(), 
				receiver.name(), receiver.value());
		
		receiver.value(value);
	}
	
	/**
	 * Returns value that should be reflected for <code>refName</code> CSS property
	 * from <code>curName</code> property. This function is used for special cases,
	 * when the same result must be achieved with different properties for different
	 * browsers. For example: opаcity:0.5; → filter:alpha(opacity=50);<br><br>
	 * 
	 * This function does value conversion between different CSS properties
	 * 
	 * @param {String} curName Current CSS property name
	 * @param {String} curValue Current CSS property value
	 * @param {String} refName Receiver CSS property's name 
	 * @param {String} refValue Receiver CSS property's value
	 * @return {String} New value for receiver property
	 */
	function getReflectedValue(curName, curValue, refName, refValue) {
		var cssEditTree = require('cssEditTree');
		var utils = require('utils');
		curName = cssEditTree.baseName(curName);
		refName = cssEditTree.baseName(refName);
		
		if (curName == 'opacity' && refName == 'filter') {
			return refValue.replace(/opacity=[^)]*/i, 'opacity=' + Math.floor(parseFloat(curValue) * 100));
		} else if (curName == 'filter' && refName == 'opacity') {
			var m = curValue.match(/opacity=([^)]*)/i);
			return m ? utils.prettifyNumber(parseInt(m[1], 10) / 100) : refValue;
		}
		
		return curValue;
	}
	
	// XXX add default handler
	handlers.add(function(property) {
		var reName = getReflectedCSSName(property.name());
		_.each(property.parent.list(), function(p) {
			if (reName.test(p.name())) {
				reflectValue(property, p);
			}
		});
	}, {order: -1});
	
	return {
		/**
		 * Adds custom reflect handler. The passed function will receive matched
		 * CSS property (as <code>CSSEditElement</code> object) and should
		 * return <code>true</code> if it was performed successfully (handled 
		 * reflection), <code>false</code> otherwise.
		 * @param {Function} fn
		 * @param {Object} options
		 */
		addHandler: function(fn, options) {
			handlers.add(fn, options);
		},
		
		/**
		 * Removes registered handler
		 * @returns
		 */
		removeHandler: function(fn) {
			handlers.remove(fn);
		}
	};
});/**
 * Evaluates simple math expression under caret
 * @param {Function} require
 * @param {Underscore} _ 
 */
emmet.exec(function(require, _) {
	require('actions').add('evaluate_math_expression', function(editor) {
		var actionUtils = require('actionUtils');
		var utils = require('utils');
		
		var content = String(editor.getContent());
		var chars = '.+-*/\\';
		
		/** @type Range */
		var sel = require('range').create(editor.getSelectionRange());
		if (!sel.length()) {
			sel = actionUtils.findExpressionBounds(editor, function(ch) {
				return utils.isNumeric(ch) || chars.indexOf(ch) != -1;
			});
		}
		
		if (sel && sel.length()) {
			var expr = sel.substring(content);
			
			// replace integral division: 11\2 => Math.round(11/2) 
			expr = expr.replace(/([\d\.\-]+)\\([\d\.\-]+)/g, 'Math.round($1/$2)');
			
			try {
				var result = utils.prettifyNumber(new Function('return ' + expr)());
				editor.replaceContent(result, sel.start, sel.end);
				editor.setCaretPos(sel.start + result.length);
				return true;
			} catch (e) {}
		}
		
		return false;
	}, {label: 'Numbers/Evaluate Math Expression'});
});
/**
 * Increment/decrement number under cursor
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	/**
	 * Extract number from current caret position of the <code>editor</code> and
	 * increment it by <code>step</code>
	 * @param {IEmmetEditor} editor
	 * @param {Number} step Increment step (may be negative)
	 */
	function incrementNumber(editor, step) {
		var utils = require('utils');
		var actionUtils = require('actionUtils');
		
		var hasSign = false;
		var hasDecimal = false;
			
		var r = actionUtils.findExpressionBounds(editor, function(ch, pos, content) {
			if (utils.isNumeric(ch))
				return true;
			if (ch == '.') {
				// make sure that next character is numeric too
				if (!utils.isNumeric(content.charAt(pos + 1)))
					return false;
				
				return hasDecimal ? false : hasDecimal = true;
			}
			if (ch == '-')
				return hasSign ? false : hasSign = true;
				
			return false;
		});
			
		if (r && r.length()) {
			var strNum = r.substring(String(editor.getContent()));
			var num = parseFloat(strNum);
			if (!_.isNaN(num)) {
				num = utils.prettifyNumber(num + step);
				
				// do we have zero-padded number?
				if (/^(\-?)0+[1-9]/.test(strNum)) {
					var minus = '';
					if (RegExp.$1) {
						minus = '-';
						num = num.substring(1);
					}
						
					var parts = num.split('.');
					parts[0] = utils.zeroPadString(parts[0], intLength(strNum));
					num = minus + parts.join('.');
				}
				
				editor.replaceContent(num, r.start, r.end);
				editor.createSelection(r.start, r.start + num.length);
				return true;
			}
		}
		
		return false;
	}
	
	/**
	 * Returns length of integer part of number
	 * @param {String} num
	 */
	function intLength(num) {
		num = num.replace(/^\-/, '');
		if (~num.indexOf('.')) {
			return num.split('.')[0].length;
		}
		
		return num.length;
	}
	
	var actions = require('actions');
	_.each([1, -1, 10, -10, 0.1, -0.1], function(num) {
		var prefix = num > 0 ? 'increment' : 'decrement';
		
		actions.add(prefix + '_number_by_' + String(Math.abs(num)).replace('.', '').substring(0, 2), function(editor) {
			return incrementNumber(editor, num);
		}, {label: 'Numbers/' + prefix.charAt(0).toUpperCase() + prefix.substring(1) + ' number by ' + Math.abs(num)});
	});
});/**
 * Actions to insert line breaks. Some simple editors (like browser's 
 * &lt;textarea&gt;, for example) do not provide such simple things
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	var actions = require('actions');
	/** @type emmet.preferences */
	var prefs = require('preferences');
	
	// setup default preferences
	prefs.define('css.closeBraceIndentation', '\n',
			'Indentation before closing brace of CSS rule. Some users prefere ' 
			+ 'indented closing brace of CSS rule for better readability. '
			+ 'This preference’s value will be automatically inserted before '
			+ 'closing brace when user adds newline in newly created CSS rule '
			+ '(e.g. when “Insert formatted linebreak” action will be performed ' 
			+ 'in CSS file). If you’re such user, you may want to write put a value ' 
			+ 'like <code>\\n\\t</code> in this preference.');
	
	/**
	 * Inserts newline character with proper indentation in specific positions only.
	 * @param {IEmmetEditor} editor
	 * @return {Boolean} Returns <code>true</code> if line break was inserted 
	 */
	actions.add('insert_formatted_line_break_only', function(editor) {
		var utils = require('utils');
		/** @type emmet.resources */
		var res = require('resources');
		
		var info = require('editorUtils').outputInfo(editor);
		var caretPos = editor.getCaretPos();
		var nl = utils.getNewline();
		var pad;
		
		if (_.include(['html', 'xml', 'xsl'], info.syntax)) {
			pad = res.getVariable('indentation');
			// let's see if we're breaking newly created tag
			var tag = require('htmlMatcher').tag(info.content, caretPos);
			if (tag && !tag.innerRange.length()) {
				editor.replaceContent(nl + pad + utils.getCaretPlaceholder() + nl, caretPos);
				return true;
			}
		} else if (info.syntax == 'css') {
			/** @type String */
			var content = info.content;
			if (caretPos && content.charAt(caretPos - 1) == '{') {
				var append = prefs.get('css.closeBraceIndentation');
				pad = res.getVariable('indentation');
				
				var hasCloseBrace = content.charAt(caretPos) == '}';
				if (!hasCloseBrace) {
					// do we really need special formatting here?
					// check if this is really a newly created rule,
					// look ahead for a closing brace
					for (var i = caretPos, il = content.length, ch; i < il; i++) {
						ch = content.charAt(i);
						if (ch == '{') {
							// ok, this is a new rule without closing brace
							break;
						}
						
						if (ch == '}') {
							// not a new rule, just add indentation
							append = '';
							hasCloseBrace = true;
							break;
						}
					}
				}
				
				if (!hasCloseBrace) {
					append += '}';
				}
				
				// defining rule set
				var insValue = nl + pad + utils.getCaretPlaceholder() + append;
				editor.replaceContent(insValue, caretPos);
				return true;
			}
		}
			
		return false;
	}, {hidden: true});
	
	/**
	 * Inserts newline character with proper indentation. This action is used in
	 * editors that doesn't have indentation control (like textarea element) to 
	 * provide proper indentation
	 * @param {IEmmetEditor} editor Editor instance
	 */
	actions.add('insert_formatted_line_break', function(editor) {
		if (!actions.run('insert_formatted_line_break_only', editor)) {
			var utils = require('utils');
			
			var curPadding = require('editorUtils').getCurrentLinePadding(editor);
			var content = String(editor.getContent());
			var caretPos = editor.getCaretPos();
			var len = content.length;
			var nl = utils.getNewline();
				
			// check out next line padding
			var lineRange = editor.getCurrentLineRange();
			var nextPadding = '';
				
			for (var i = lineRange.end + 1, ch; i < len; i++) {
				ch = content.charAt(i);
				if (ch == ' ' || ch == '\t')
					nextPadding += ch;
				else
					break;
			}
			
			if (nextPadding.length > curPadding.length)
				editor.replaceContent(nl + nextPadding, caretPos, caretPos, true);
			else
				editor.replaceContent(nl, caretPos);
		}
		
		return true;
	}, {hidden: true});
});/**
 * Merges selected lines or lines between XHTML tag pairs
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	require('actions').add('merge_lines', function(editor) {
		var matcher = require('htmlMatcher');
		var utils = require('utils');
		var editorUtils = require('editorUtils');
		var info = editorUtils.outputInfo(editor);
		
		/** @type Range */
		var selection = require('range').create(editor.getSelectionRange());
		if (!selection.length()) {
			// find matching tag
			var pair = matcher.find(info.content, editor.getCaretPos());
			if (pair) {
				selection = pair.outerRange;
			}
		}
		
		if (selection.length()) {
			// got range, merge lines
			var text =  selection.substring(info.content);
			var lines = utils.splitByLines(text);
			
			for (var i = 1; i < lines.length; i++) {
				lines[i] = lines[i].replace(/^\s+/, '');
			}
			
			text = lines.join('').replace(/\s{2,}/, ' ');
			var textLen = text.length;
			text = utils.escapeText(text);
			editor.replaceContent(text, selection.start, selection.end);
			editor.createSelection(selection.start, selection.start + textLen);
			
			return true;
		}
		
		return false;
	});
});/**
 * Encodes/decodes image under cursor to/from base64
 * @param {IEmmetEditor} editor
 * @since 0.65
 * 
 * @memberOf __base64ActionDefine
 * @constructor
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	require('actions').add('encode_decode_data_url', function(editor) {
		var data = String(editor.getSelection());
		var caretPos = editor.getCaretPos();
			
		if (!data) {
			// no selection, try to find image bounds from current caret position
			var text = String(editor.getContent()),  m;
			while (caretPos-- >= 0) {
				if (startsWith('src=', text, caretPos)) { // found <img src="">
					if ((m = text.substr(caretPos).match(/^(src=(["'])?)([^'"<>\s]+)\1?/))) {
						data = m[3];
						caretPos += m[1].length;
					}
					break;
				} else if (startsWith('url(', text, caretPos)) { // found CSS url() pattern
					if ((m = text.substr(caretPos).match(/^(url\((['"])?)([^'"\)\s]+)\1?/))) {
						data = m[3];
						caretPos += m[1].length;
					}
					break;
				}
			}
		}
		
		if (data) {
			if (startsWith('data:', data))
				return decodeFromBase64(editor, data, caretPos);
			else
				return encodeToBase64(editor, data, caretPos);
		}
		
		return false;
	}, {label: 'Encode\\Decode data:URL image'});
	
	/**
	 * Test if <code>text</code> starts with <code>token</code> at <code>pos</code>
	 * position. If <code>pos</code> is omitted, search from beginning of text 
	 * @param {String} token Token to test
	 * @param {String} text Where to search
	 * @param {Number} pos Position where to start search
	 * @return {Boolean}
	 * @since 0.65
	 */
	function startsWith(token, text, pos) {
		pos = pos || 0;
		return text.charAt(pos) == token.charAt(0) && text.substr(pos, token.length) == token;
	}
	
	/**
	 * Encodes image to base64
	 * 
	 * @param {IEmmetEditor} editor
	 * @param {String} imgPath Path to image
	 * @param {Number} pos Caret position where image is located in the editor
	 * @return {Boolean}
	 */
	function encodeToBase64(editor, imgPath, pos) {
		var file = require('file');
		var actionUtils = require('actionUtils');
		
		var editorFile = editor.getFilePath();
		var defaultMimeType = 'application/octet-stream';
			
		if (editorFile === null) {
			throw "You should save your file before using this action";
		}
		
		// locate real image path
		var realImgPath = file.locateFile(editorFile, imgPath);
		if (realImgPath === null) {
			throw "Can't find " + imgPath + ' file';
		}
		
		file.read(realImgPath, function(err, content) {
			if (err) {
				throw 'Unable to read ' + realImgPath + ': ' + err;
			}
			
			var b64 = require('base64').encode(String(content));
			if (!b64) {
				throw "Can't encode file content to base64";
			}
			
			b64 = 'data:' + (actionUtils.mimeTypes[String(file.getExt(realImgPath))] || defaultMimeType) +
				';base64,' + b64;
				
			editor.replaceContent('$0' + b64, pos, pos + imgPath.length);
		});
		
		
		return true;
	}

	/**
	 * Decodes base64 string back to file.
	 * @param {IEmmetEditor} editor
	 * @param {String} data Base64-encoded file content
	 * @param {Number} pos Caret position where image is located in the editor
	 */
	function decodeFromBase64(editor, data, pos) {
		// ask user to enter path to file
		var filePath = String(editor.prompt('Enter path to file (absolute or relative)'));
		if (!filePath)
			return false;
			
		var file = require('file');
		var absPath = file.createPath(editor.getFilePath(), filePath);
		if (!absPath) {
			throw "Can't save file";
		}
		
		file.save(absPath, require('base64').decode( data.replace(/^data\:.+?;.+?,/, '') ));
		editor.replaceContent('$0' + filePath, pos, pos + data.length);
		return true;
	}
});
/**
 * Automatically updates image size attributes in HTML's &lt;img&gt; element or
 * CSS rule
 * @param {Function} require
 * @param {Underscore} _
 * @constructor
 * @memberOf __updateImageSizeAction
 */
emmet.exec(function(require, _) {
	/**
	 * Updates image size of &lt;img src=""&gt; tag
	 * @param {IEmmetEditor} editor
	 */
	function updateImageSizeHTML(editor) {
		var offset = editor.getCaretPos();
		
		// find tag from current caret position
		var info = require('editorUtils').outputInfo(editor);
		var xmlElem = require('xmlEditTree').parseFromPosition(info.content, offset, true);
		if (xmlElem && (xmlElem.name() || '').toLowerCase() == 'img') {
			getImageSizeForSource(editor, xmlElem.value('src'), function(size) {
				if (size) {
					var compoundData = xmlElem.range(true);
					xmlElem.value('width', size.width);
					xmlElem.value('height', size.height, xmlElem.indexOf('width') + 1);
					
					require('actionUtils').compoundUpdate(editor, _.extend(compoundData, {
						data: xmlElem.toString(),
						caret: offset
					}));
				}
			});
		}
	}
	
	/**
	 * Updates image size of CSS property
	 * @param {IEmmetEditor} editor
	 */
	function updateImageSizeCSS(editor) {
		var offset = editor.getCaretPos();
		
		// find tag from current caret position
		var info = require('editorUtils').outputInfo(editor);
		var cssRule = require('cssEditTree').parseFromPosition(info.content, offset, true);
		if (cssRule) {
			// check if there is property with image under caret
			var prop = cssRule.itemFromPosition(offset, true), m;
			if (prop && (m = /url\((["']?)(.+?)\1\)/i.exec(prop.value() || ''))) {
				getImageSizeForSource(editor, m[2], function(size) {
					if (size) {
						var compoundData = cssRule.range(true);
						cssRule.value('width', size.width + 'px');
						cssRule.value('height', size.height + 'px', cssRule.indexOf('width') + 1);
						
						require('actionUtils').compoundUpdate(editor, _.extend(compoundData, {
							data: cssRule.toString(),
							caret: offset
						}));
					}
				});
			}
		}
	}
	
	/**
	 * Returns image dimensions for source
	 * @param {IEmmetEditor} editor
	 * @param {String} src Image source (path or data:url)
	 */
	function getImageSizeForSource(editor, src, callback) {
		var fileContent;
		var au = require('actionUtils');
		if (src) {
			// check if it is data:url
			if (/^data:/.test(src)) {
				fileContent = require('base64').decode( src.replace(/^data\:.+?;.+?,/, '') );
				return callback(au.getImageSize(fileContent));
			}
			
			var file = require('file');
			var absPath = file.locateFile(editor.getFilePath(), src);
			if (absPath === null) {
				throw "Can't find " + src + ' file';
			}
			
			file.read(absPath, function(err, content) {
				if (err) {
					throw 'Unable to read ' + absPath + ': ' + err;
				}
				
				content = String(content);
				callback(au.getImageSize(content));
			});
		}
	}
	
	require('actions').add('update_image_size', function(editor) {
		// this action will definitely won’t work in SASS dialect,
		// but may work in SCSS or LESS
		if (_.include(['css', 'less', 'scss'], String(editor.getSyntax()))) {
			updateImageSizeCSS(editor);
		} else {
			updateImageSizeHTML(editor);
		}
		
		return true;
	});
});/**
 * Resolver for fast CSS typing. Handles abbreviations with the following 
 * notation:<br>
 * 
 * <code>(-vendor prefix)?property(value)*(!)?</code>
 * 
 * <br><br>
 * <b>Abbreviation handling</b><br>
 * 
 * By default, Emmet searches for matching snippet definition for provided abbreviation.
 * If snippet wasn't found, Emmet automatically generates element with 
 * abbreviation's name. For example, <code>foo</code> abbreviation will generate
 * <code>&lt;foo&gt;&lt;/foo&gt;</code> output.
 * <br><br>
 * This module will capture all expanded properties and upgrade them with values, 
 * vendor prefixes and !important declarations. All unmatched abbreviations will 
 * be automatically transformed into <code>property-name: ${1}</code> snippets. 
 * 
 * <b>Vendor prefixes<b><br>
 * 
 * If CSS-property is preceded with dash, resolver should output property with
 * all <i>known</i> vendor prefixes. For example, if <code>brad</code> 
 * abbreviation generates <code>border-radius: ${value};</code> snippet,
 * the <code>-brad</code> abbreviation should generate:
 * <pre><code>
 * -webkit-border-radius: ${value};
 * -moz-border-radius: ${value};
 * border-radius: ${value};
 * </code></pre>
 * Note that <i>o</i> and <i>ms</i> prefixes are omitted since Opera and IE 
 * supports unprefixed property.<br><br>
 * 
 * Users can also provide an explicit list of one-character prefixes for any
 * CSS property. For example, <code>-wm-float</code> will produce
 * 
 * <pre><code>
 * -webkit-float: ${1};
 * -moz-float: ${1};
 * float: ${1};
 * </code></pre>
 * 
 * Although this example looks pointless, users can use this feature to write
 * cutting-edge properties implemented by browser vendors recently.  
 * 
 * @constructor
 * @memberOf __cssResolverDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('cssResolver', function(require, _) {
	/** Back-reference to module */
	var module = null;
	
	var prefixObj = {
		/** Real vendor prefix name */
		prefix: 'emmet',
		
		/** 
		 * Indicates this prefix is obsolete and should't be used when user 
		 * wants to generate all-prefixed properties
		 */
		obsolete: false,
		
		/**
		 * Returns prefixed CSS property name
		 * @param {String} name Unprefixed CSS property
		 */
		transformName: function(name) {
			return '-' + this.prefix + '-' + name;
		},
		
		/**
		 * List of unprefixed CSS properties that supported by 
		 * current prefix. This list is used to generate all-prefixed property
		 * @returns {Array} 
		 */
		properties: function() {
			return getProperties('css.' + this.prefix + 'Properties') || [];
		},
		
		/**
		 * Check if given property is supported by current prefix
		 * @param name
		 */
		supports: function(name) {
			return _.include(this.properties(), name);
		}
	};
	
	
	/** 
	 * List of registered one-character prefixes. Key is a one-character prefix, 
	 * value is an <code>prefixObj</code> object
	 */
	var vendorPrefixes = {};
	
	var defaultValue = '${1};';
	
	// XXX module preferences
	var prefs = require('preferences');
	prefs.define('css.valueSeparator', ': ',
			'Defines a symbol that should be placed between CSS property and ' 
			+ 'value when expanding CSS abbreviations.');
	prefs.define('css.propertyEnd', ';',
			'Defines a symbol that should be placed at the end of CSS property  ' 
			+ 'when expanding CSS abbreviations.');
	
	prefs.define('stylus.valueSeparator', ' ',
			'Defines a symbol that should be placed between CSS property and ' 
			+ 'value when expanding CSS abbreviations in Stylus dialect.');
	prefs.define('stylus.propertyEnd', '',
			'Defines a symbol that should be placed at the end of CSS property  ' 
			+ 'when expanding CSS abbreviations in Stylus dialect.');
	
	prefs.define('sass.propertyEnd', '',
			'Defines a symbol that should be placed at the end of CSS property  ' 
			+ 'when expanding CSS abbreviations in SASS dialect.');
	
	prefs.define('css.autoInsertVendorPrefixes', true,
			'Automatically generate vendor-prefixed copies of expanded CSS ' 
			+ 'property. By default, Emmet will generate vendor-prefixed '
			+ 'properties only when you put dash before abbreviation ' 
			+ '(e.g. <code>-bxsh</code>). With this option enabled, you don’t ' 
			+ 'need dashes before abbreviations: Emmet will produce ' 
			+ 'vendor-prefixed properties for you.');
	
	var descTemplate = _.template('A comma-separated list of CSS properties that may have ' 
		+ '<code><%= vendor %></code> vendor prefix. This list is used to generate '
		+ 'a list of prefixed properties when expanding <code>-property</code> '
		+ 'abbreviations. Empty list means that all possible CSS values may ' 
		+ 'have <code><%= vendor %></code> prefix.');
	
	var descAddonTemplate = _.template('A comma-separated list of <em>additional</em> CSS properties ' 
			+ 'for <code>css.<%= vendor %>Preperties</code> preference. ' 
			+ 'You should use this list if you want to add or remove a few CSS ' 
			+ 'properties to original set. To add a new property, simply write its name, '
			+ 'to remove it, precede property with hyphen.<br>'
			+ 'For example, to add <em>foo</em> property and remove <em>border-radius</em> one, '
			+ 'the preference value will look like this: <code>foo, -border-radius</code>.');
	
	// properties list is created from cssFeatures.html file
	var props = {
		'webkit': 'animation, animation-delay, animation-direction, animation-duration, animation-fill-mode, animation-iteration-count, animation-name, animation-play-state, animation-timing-function, appearance, backface-visibility, background-clip, background-composite, background-origin, background-size, border-fit, border-horizontal-spacing, border-image, border-vertical-spacing, box-align, box-direction, box-flex, box-flex-group, box-lines, box-ordinal-group, box-orient, box-pack, box-reflect, box-shadow, color-correction, column-break-after, column-break-before, column-break-inside, column-count, column-gap, column-rule-color, column-rule-style, column-rule-width, column-span, column-width, dashboard-region, font-smoothing, highlight, hyphenate-character, hyphenate-limit-after, hyphenate-limit-before, hyphens, line-box-contain, line-break, line-clamp, locale, margin-before-collapse, margin-after-collapse, marquee-direction, marquee-increment, marquee-repetition, marquee-style, mask-attachment, mask-box-image, mask-box-image-outset, mask-box-image-repeat, mask-box-image-slice, mask-box-image-source, mask-box-image-width, mask-clip, mask-composite, mask-image, mask-origin, mask-position, mask-repeat, mask-size, nbsp-mode, perspective, perspective-origin, rtl-ordering, text-combine, text-decorations-in-effect, text-emphasis-color, text-emphasis-position, text-emphasis-style, text-fill-color, text-orientation, text-security, text-stroke-color, text-stroke-width, transform, transition, transform-origin, transform-style, transition-delay, transition-duration, transition-property, transition-timing-function, user-drag, user-modify, user-select, writing-mode, svg-shadow, box-sizing, border-radius',
		'moz': 'animation-delay, animation-direction, animation-duration, animation-fill-mode, animation-iteration-count, animation-name, animation-play-state, animation-timing-function, appearance, backface-visibility, background-inline-policy, binding, border-bottom-colors, border-image, border-left-colors, border-right-colors, border-top-colors, box-align, box-direction, box-flex, box-ordinal-group, box-orient, box-pack, box-shadow, box-sizing, column-count, column-gap, column-rule-color, column-rule-style, column-rule-width, column-width, float-edge, font-feature-settings, font-language-override, force-broken-image-icon, hyphens, image-region, orient, outline-radius-bottomleft, outline-radius-bottomright, outline-radius-topleft, outline-radius-topright, perspective, perspective-origin, stack-sizing, tab-size, text-blink, text-decoration-color, text-decoration-line, text-decoration-style, text-size-adjust, transform, transform-origin, transform-style, transition, transition-delay, transition-duration, transition-property, transition-timing-function, user-focus, user-input, user-modify, user-select, window-shadow, background-clip, border-radius',
		'ms': 'accelerator, backface-visibility, background-position-x, background-position-y, behavior, block-progression, box-align, box-direction, box-flex, box-line-progression, box-lines, box-ordinal-group, box-orient, box-pack, content-zoom-boundary, content-zoom-boundary-max, content-zoom-boundary-min, content-zoom-chaining, content-zoom-snap, content-zoom-snap-points, content-zoom-snap-type, content-zooming, filter, flow-from, flow-into, font-feature-settings, grid-column, grid-column-align, grid-column-span, grid-columns, grid-layer, grid-row, grid-row-align, grid-row-span, grid-rows, high-contrast-adjust, hyphenate-limit-chars, hyphenate-limit-lines, hyphenate-limit-zone, hyphens, ime-mode, interpolation-mode, layout-flow, layout-grid, layout-grid-char, layout-grid-line, layout-grid-mode, layout-grid-type, line-break, overflow-style, perspective, perspective-origin, perspective-origin-x, perspective-origin-y, scroll-boundary, scroll-boundary-bottom, scroll-boundary-left, scroll-boundary-right, scroll-boundary-top, scroll-chaining, scroll-rails, scroll-snap-points-x, scroll-snap-points-y, scroll-snap-type, scroll-snap-x, scroll-snap-y, scrollbar-arrow-color, scrollbar-base-color, scrollbar-darkshadow-color, scrollbar-face-color, scrollbar-highlight-color, scrollbar-shadow-color, scrollbar-track-color, text-align-last, text-autospace, text-justify, text-kashida-space, text-overflow, text-size-adjust, text-underline-position, touch-action, transform, transform-origin, transform-origin-x, transform-origin-y, transform-origin-z, transform-style, transition, transition-delay, transition-duration, transition-property, transition-timing-function, user-select, word-break, word-wrap, wrap-flow, wrap-margin, wrap-through, writing-mode',
		'o': 'dashboard-region, animation, animation-delay, animation-direction, animation-duration, animation-fill-mode, animation-iteration-count, animation-name, animation-play-state, animation-timing-function, border-image, link, link-source, object-fit, object-position, tab-size, table-baseline, transform, transform-origin, transition, transition-delay, transition-duration, transition-property, transition-timing-function, accesskey, input-format, input-required, marquee-dir, marquee-loop, marquee-speed, marquee-style'
	};
	
	_.each(props, function(v, k) {
		prefs.define('css.' + k + 'Properties', v, descTemplate({vendor: k}));
		prefs.define('css.' + k + 'PropertiesAddon', '', descAddonTemplate({vendor: k}));
	});
	
	prefs.define('css.unitlessProperties', 'z-index, line-height, opacity, font-weight, zoom', 
			'The list of properties whose values ​​must not contain units.');
	
	prefs.define('css.intUnit', 'px', 'Default unit for integer values');
	prefs.define('css.floatUnit', 'em', 'Default unit for float values');
	
	prefs.define('css.keywords', 'auto, inherit', 
			'A comma-separated list of valid keywords that can be used in CSS abbreviations.');
	
	prefs.define('css.keywordAliases', 'a:auto, i:inherit, s:solid, da:dashed, do:dotted, t:transparent', 
			'A comma-separated list of keyword aliases, used in CSS abbreviation. '
			+ 'Each alias should be defined as <code>alias:keyword_name</code>.');
	
	prefs.define('css.unitAliases', 'e:em, p:%, x:ex, r:rem', 
			'A comma-separated list of unit aliases, used in CSS abbreviation. '
			+ 'Each alias should be defined as <code>alias:unit_value</code>.');
	
	prefs.define('css.color.short', true, 
			'Should color values like <code>#ffffff</code> be shortened to '
			+ '<code>#fff</code> after abbreviation with color was expanded.');
	
	prefs.define('css.color.case', 'keep', 
			'Letter case of color values generated by abbreviations with color '
			+ '(like <code>c#0</code>). Possible values are <code>upper</code>, '
			+ '<code>lower</code> and <code>keep</code>.');
	
	prefs.define('css.fuzzySearch', true, 
			'Enable fuzzy search among CSS snippet names. When enabled, every ' 
			+ '<em>unknown</em> snippet will be scored against available snippet '
			+ 'names (not values or CSS properties!). The match with best score '
			+ 'will be used to resolve snippet value. For example, with this ' 
			+ 'preference enabled, the following abbreviations are equal: '
			+ '<code>ov:h</code> == <code>ov-h</code> == <code>o-h</code> == '
			+ '<code>oh</code>');
	
	prefs.define('css.fuzzySearchMinScore', 0.3, 
			'The minium score (from 0 to 1) that fuzzy-matched abbreviation should ' 
			+ 'achive. Lower values may produce many false-positive matches, '
			+ 'higher values may reduce possible matches.');
	
	prefs.define('css.alignVendor', false, 
			'If set to <code>true</code>, all generated vendor-prefixed properties ' 
			+ 'will be aligned by real property name.');
	
	
	function isNumeric(ch) {
		var code = ch && ch.charCodeAt(0);
		return (ch && ch == '.' || (code > 47 && code < 58));
	}
	
	/**
	 * Check if provided snippet contains only one CSS property and value.
	 * @param {String} snippet
	 * @returns {Boolean}
	 */
	function isSingleProperty(snippet) {
		var utils = require('utils');
		snippet = utils.trim(snippet);
		
		// check if it doesn't contain a comment and a newline
		if (~snippet.indexOf('/*') || /[\n\r]/.test(snippet)) {
			return false;
		}
		
		// check if it's a valid snippet definition
		if (!/^[a-z0-9\-]+\s*\:/i.test(snippet)) {
			return false;
		}
		
		snippet = require('tabStops').processText(snippet, {
			replaceCarets: true,
			tabstop: function() {
				return 'value';
			}
		});
		
		return snippet.split(':').length == 2;
	}
	
	/**
	 * Normalizes abbreviated value to final CSS one
	 * @param {String} value
	 * @returns {String}
	 */
	function normalizeValue(value) {
		if (value.charAt(0) == '-' && !/^\-[\.\d]/.test(value)) {
			value = value.replace(/^\-+/, '');
		}
		
		if (value.charAt(0) == '#') {
			return normalizeHexColor(value);
		}
		
		return getKeyword(value);
	}
	
	function normalizeHexColor(value) {
		var hex = value.replace(/^#+/, '') || '0';
		if (hex.toLowerCase() == 't') {
			return 'transparent';
		}
		
		var repeat = require('utils').repeatString;
		var color = null;
		switch (hex.length) {
			case 1:
				color = repeat(hex, 6);
				break;
			case 2:
				color = repeat(hex, 3);
				break;
			case 3:
				color = hex.charAt(0) + hex.charAt(0) + hex.charAt(1) + hex.charAt(1) + hex.charAt(2) + hex.charAt(2);
				break;
			case 4:
				color = hex + hex.substr(0, 2);
				break;
			case 5:
				color = hex + hex.charAt(0);
				break;
			default:
				color = hex.substr(0, 6);
		}
		
		// color must be shortened?
		if (prefs.get('css.color.short')) {
			var p = color.split('');
			if (p[0] == p[1] && p[2] == p[3] && p[4] == p[5]) {
				color = p[0] + p[2] + p[4];
			}
		}
		
		// should transform case?
		switch (prefs.get('css.color.case')) {
			case 'upper':
				color = color.toUpperCase();
				break;
			case 'lower':
				color = color.toLowerCase();
				break;
		}
		
		return '#' + color;
	}
	
	function getKeyword(name) {
		var aliases = prefs.getDict('css.keywordAliases');
		return name in aliases ? aliases[name] : name;
	}
	
	function getUnit(name) {
		var aliases = prefs.getDict('css.unitAliases');
		return name in aliases ? aliases[name] : name;
	}
	
	function isValidKeyword(keyword) {
		return _.include(prefs.getArray('css.keywords'), getKeyword(keyword));
	}
	
	/**
	 * Check if passed CSS property support specified vendor prefix 
	 * @param {String} property
	 * @param {String} prefix
	 */
	function hasPrefix(property, prefix) {
		var info = vendorPrefixes[prefix];
		
		if (!info)
			info = _.find(vendorPrefixes, function(data) {
				return data.prefix == prefix;
			});
		
		return info && info.supports(property);
	}
	
	/**
	 * Search for a list of supported prefixes for CSS property. This list
	 * is used to generate all-prefixed snippet
	 * @param {String} property CSS property name
	 * @returns {Array}
	 */
	function findPrefixes(property, noAutofill) {
		var result = [];
		_.each(vendorPrefixes, function(obj, prefix) {
			if (hasPrefix(property, prefix)) {
				result.push(prefix);
			}
		});
		
		if (!result.length && !noAutofill) {
			// add all non-obsolete prefixes
			_.each(vendorPrefixes, function(obj, prefix) {
				if (!obj.obsolete)
					result.push(prefix);
			});
		}
		
		return result;
	}
	
	function addPrefix(name, obj) {
		if (_.isString(obj))
			obj = {prefix: obj};
		
		vendorPrefixes[name] = _.extend({}, prefixObj, obj);
	}
	
	function getSyntaxPreference(name, syntax) {
		if (syntax) {
			var val = prefs.get(syntax + '.' + name);
			if (!_.isUndefined(val))
				return val;
		}
		
		return prefs.get('css.' + name);
	}
	
	/**
	 * Format CSS property according to current syntax dialect
	 * @param {String} property
	 * @param {String} syntax
	 * @returns {String}
	 */
	function formatProperty(property, syntax) {
		var ix = property.indexOf(':');
		property = property.substring(0, ix).replace(/\s+$/, '') 
			+ getSyntaxPreference('valueSeparator', syntax)
			+ require('utils').trim(property.substring(ix + 1));
		
		return property.replace(/\s*;\s*$/, getSyntaxPreference('propertyEnd', syntax));
	}
	
	/**
	 * Transforms snippet value if required. For example, this transformation
	 * may add <i>!important</i> declaration to CSS property
	 * @param {String} snippet
	 * @param {Boolean} isImportant
	 * @returns {String}
	 */
	function transformSnippet(snippet, isImportant, syntax) {
		if (!_.isString(snippet))
			snippet = snippet.data;
		
		if (!isSingleProperty(snippet))
			return snippet;
		
		if (isImportant) {
			if (~snippet.indexOf(';')) {
				snippet = snippet.split(';').join(' !important;');
			} else {
				snippet += ' !important';
			}
		}
		
		return formatProperty(snippet, syntax);
	}
	
	function getProperties(key) {
		var list = prefs.getArray(key);
		_.each(prefs.getArray(key + 'Addon'), function(prop) {
			if (prop.charAt(0) == '-') {
				list = _.without(list, prop.substr(1));
			} else {
				if (prop.charAt(0) == '+')
					prop = prop.substr(1);
				
				list.push(prop);
			}
		});
		
		return list;
	}
	
	
	// TODO refactor, this looks awkward now
	addPrefix('w', {
		prefix: 'webkit'
	});
	addPrefix('m', {
		prefix: 'moz'
	});
	addPrefix('s', {
		prefix: 'ms'
	});
	addPrefix('o', {
		prefix: 'o'
	});
	
	// I think nobody uses it
//	addPrefix('k', {
//		prefix: 'khtml',
//		obsolete: true
//	});
	
	var cssSyntaxes = ['css', 'less', 'sass', 'scss', 'stylus'];
	
	/**
	 * XXX register resolver
	 * @param {TreeNode} node
	 * @param {String} syntax
	 */
	require('resources').addResolver(function(node, syntax) {
		if (_.include(cssSyntaxes, syntax) && node.isElement()) {
			return module.expandToSnippet(node.abbreviation, syntax);
		}
		
		return null;
	});
	
	var ea = require('expandAbbreviation');
	/**
	 * For CSS-like syntaxes, we need to handle a special use case. Some editors
	 * (like Sublime Text 2) may insert semicolons automatically when user types
	 * abbreviation. After expansion, user receives a double semicolon. This
	 * handler automatically removes semicolon from generated content in such cases.
	 * @param {IEmmetEditor} editor
	 * @param {String} syntax
	 * @param {String} profile
	 */
	ea.addHandler(function(editor, syntax, profile) {
		if (!_.include(cssSyntaxes, syntax)) {
			return false;
		}
		
		var caretPos = editor.getSelectionRange().end;
		var abbr = ea.findAbbreviation(editor);
			
		if (abbr) {
			var content = emmet.expandAbbreviation(abbr, syntax, profile);
			if (content) {
				var replaceFrom = caretPos - abbr.length;
				var replaceTo = caretPos;
				if (editor.getContent().charAt(caretPos) == ';' && content.charAt(content.length - 1) == ';') {
					replaceTo++;
				}
				
				editor.replaceContent(content, replaceFrom, replaceTo);
				return true;
			}
		}
		
		return false;
	});
	
	return module = {
		/**
		 * Adds vendor prefix
		 * @param {String} name One-character prefix name
		 * @param {Object} obj Object describing vendor prefix
		 * @memberOf cssResolver
		 */
		addPrefix: addPrefix,
		
		/**
		 * Check if passed CSS property supports specified vendor prefix
		 * @param {String} property
		 * @param {String} prefix
		 */
		supportsPrefix: hasPrefix,
		
		/**
		 * Returns prefixed version of passed CSS property, only if this
		 * property supports such prefix
		 * @param {String} property
		 * @param {String} prefix
		 * @returns
		 */
		prefixed: function(property, prefix) {
			return hasPrefix(property, prefix) 
				? '-' + prefix + '-' + property 
				: property;
		},
		
		/**
		 * Returns list of all registered vendor prefixes
		 * @returns {Array}
		 */
		listPrefixes: function() {
			return _.map(vendorPrefixes, function(obj) {
				return obj.prefix;
			});
		},
		
		/**
		 * Returns object describing vendor prefix
		 * @param {String} name
		 * @returns {Object}
		 */
		getPrefix: function(name) {
			return vendorPrefixes[name];
		},
		
		/**
		 * Removes prefix object
		 * @param {String} name
		 */
		removePrefix: function(name) {
			if (name in vendorPrefixes)
				delete vendorPrefixes[name];
		},
		
		/**
		 * Extract vendor prefixes from abbreviation
		 * @param {String} abbr
		 * @returns {Object} Object containing array of prefixes and clean 
		 * abbreviation name
		 */
		extractPrefixes: function(abbr) {
			if (abbr.charAt(0) != '-') {
				return {
					property: abbr,
					prefixes: null
				};
			}
			
			// abbreviation may either contain sequence of one-character prefixes
			// or just dash, meaning that user wants to produce all possible
			// prefixed properties
			var i = 1, il = abbr.length, ch;
			var prefixes = [];
			
			while (i < il) {
				ch = abbr.charAt(i);
				if (ch == '-') {
					// end-sequence character found, stop searching
					i++;
					break;
				}
				
				if (ch in vendorPrefixes) {
					prefixes.push(ch);
				} else {
					// no prefix found, meaning user want to produce all
					// vendor-prefixed properties
					prefixes.length = 0;
					i = 1;
					break;
				}
				
				i++;
			}
			
			// reached end of abbreviation and no property name left
			if (i == il -1) {
				i = 1;
				prefixes.length = 1;
			}
			
			return {
				property: abbr.substring(i),
				prefixes: prefixes.length ? prefixes : 'all'
			};
		},
		
		/**
		 * Search for value substring in abbreviation
		 * @param {String} abbr
		 * @returns {String} Value substring
		 */
		findValuesInAbbreviation: function(abbr, syntax) {
			syntax = syntax || 'css';
			
			var i = 0, il = abbr.length, value = '', ch;
			while (i < il) {
				ch = abbr.charAt(i);
				if (isNumeric(ch) || ch == '#' || (ch == '-' && isNumeric(abbr.charAt(i + 1)))) {
					value = abbr.substring(i);
					break;
				}
				
				i++;
			}
			
			// try to find keywords in abbreviation
			var property = abbr.substring(0, abbr.length - value.length);
			var res = require('resources');
			var keywords = [];
			// try to extract some commonly-used properties
			while (~property.indexOf('-') && !res.findSnippet(syntax, property)) {
				var parts = property.split('-');
				var lastPart = parts.pop();
				if (!isValidKeyword(lastPart)) {
					break;
				}
				
				keywords.unshift(lastPart);
				property = parts.join('-');
			}
			
			return keywords.join('-') + value;
		},
		
		parseValues: function(str) {
			/** @type StringStream */
			var stream = require('stringStream').create(str);
			var values = [];
			var ch = null;
			
			while ((ch = stream.next())) {
				if (ch == '#') {
					stream.match(/^t|[0-9a-f]+/i, true);
					values.push(stream.current());
				} else if (ch == '-') {
					if (isValidKeyword(_.last(values)) || 
							( stream.start && isNumeric(str.charAt(stream.start - 1)) )
						) {
						stream.start = stream.pos;
					}
					
					stream.match(/^\-?[0-9]*(\.[0-9]+)?[a-z%\.]*/, true);
					values.push(stream.current());
				} else {
					stream.match(/^[0-9]*(\.[0-9]*)?[a-z%]*/, true);
					values.push(stream.current());
				}
				
				stream.start = stream.pos;
			}
			
			return _.map(_.compact(values), normalizeValue);
		},
		
		/**
		 * Extracts values from abbreviation
		 * @param {String} abbr
		 * @returns {Object} Object containing array of values and clean 
		 * abbreviation name
		 */
		extractValues: function(abbr) {
			// search for value start
			var abbrValues = this.findValuesInAbbreviation(abbr);
			if (!abbrValues) {
				return {
					property: abbr,
					values: null
				};
			}
			
			return {
				property: abbr.substring(0, abbr.length - abbrValues.length).replace(/-$/, ''),
				values: this.parseValues(abbrValues)
			};
		},
		
		/**
		 * Normalizes value, defined in abbreviation.
		 * @param {String} value
		 * @param {String} property
		 * @returns {String}
		 */
		normalizeValue: function(value, property) {
			property = (property || '').toLowerCase();
			var unitlessProps = prefs.getArray('css.unitlessProperties');
			return value.replace(/^(\-?[0-9\.]+)([a-z]*)$/, function(str, val, unit) {
				if (!unit && (val == '0' || _.include(unitlessProps, property)))
					return val;
				
				if (!unit)
					return val.replace(/\.$/, '') + prefs.get(~val.indexOf('.') ? 'css.floatUnit' : 'css.intUnit');
				
				return val + getUnit(unit);
			});
		},
		
		/**
		 * Expands abbreviation into a snippet
		 * @param {String} abbr Abbreviation name to expand
		 * @param {String} value Abbreviation value
		 * @param {String} syntax Currect syntax or dialect. Default is 'css'
		 * @returns {Object} Array of CSS properties and values or predefined
		 * snippet (string or element)
		 */
		expand: function(abbr, value, syntax) {
			syntax = syntax || 'css';
			var resources = require('resources');
			var autoInsertPrefixes = prefs.get('css.autoInsertVendorPrefixes');
			
			// check if snippet should be transformed to !important
			var isImportant = /^(.+)\!$/.test(abbr);
			if (isImportant) {
				abbr = RegExp.$1;
			}
			
			// check if we have abbreviated resource
			var snippet = resources.findSnippet(syntax, abbr);
			if (snippet && !autoInsertPrefixes) {
				return transformSnippet(snippet, isImportant, syntax);
			}
			
			// no abbreviated resource, parse abbreviation
			var prefixData = this.extractPrefixes(abbr);
			var valuesData = this.extractValues(prefixData.property);
			var abbrData = _.extend(prefixData, valuesData);
			
			if (!snippet) {
				snippet = resources.findSnippet(syntax, abbrData.property);
			} else {
				abbrData.values = null;
			}
			
			if (!snippet && prefs.get('css.fuzzySearch')) {
				// let’s try fuzzy search
				snippet = resources.fuzzyFindSnippet(syntax, abbrData.property, parseFloat(prefs.get('css.fuzzySearchMinScore')));
			}
			
			if (!snippet) {
				snippet = abbrData.property + ':' + defaultValue;
			} else if (!_.isString(snippet)) {
				snippet = snippet.data;
			}
			
			if (!isSingleProperty(snippet)) {
				return snippet;
			}
			
			var snippetObj = this.splitSnippet(snippet);
			var result = [];
			if (!value && abbrData.values) {
				value = _.map(abbrData.values, function(val) {
					return this.normalizeValue(val, snippetObj.name);
				}, this).join(' ') + ';';
			}
			
			snippetObj.value = value || snippetObj.value;
			
			var prefixes = abbrData.prefixes == 'all' || (!abbrData.prefixes && autoInsertPrefixes) 
				? findPrefixes(snippetObj.name, autoInsertPrefixes && abbrData.prefixes != 'all')
				: abbrData.prefixes;
				
				
			var names = [], propName;
			_.each(prefixes, function(p) {
				if (p in vendorPrefixes) {
					propName = vendorPrefixes[p].transformName(snippetObj.name);
					names.push(propName);
					result.push(transformSnippet(propName + ':' + snippetObj.value,
							isImportant, syntax));
				}
			});
			
			// put the original property
			result.push(transformSnippet(snippetObj.name + ':' + snippetObj.value, isImportant, syntax));
			names.push(snippetObj.name);
			
			if (prefs.get('css.alignVendor')) {
				var pads = require('utils').getStringsPads(names);
				result = _.map(result, function(prop, i) {
					return pads[i] + prop;
				});
			}
			
			return result;
		},
		
		/**
		 * Same as <code>expand</code> method but transforms output into 
		 * Emmet snippet
		 * @param {String} abbr
		 * @param {String} syntax
		 * @returns {String}
		 */
		expandToSnippet: function(abbr, syntax) {
			var snippet = this.expand(abbr, null, syntax);
			if (_.isArray(snippet)) {
				return snippet.join('\n');
			}
			
			if (!_.isString(snippet))
				return snippet.data;
			
			return String(snippet);
		},
		
		/**
		 * Split snippet into a CSS property-value pair
		 * @param {String} snippet
		 */
		splitSnippet: function(snippet) {
			var utils = require('utils');
			snippet = utils.trim(snippet);
			if (snippet.indexOf(':') == -1) {
				return {
					name: snippet,
					value: defaultValue
				};
			}
			
			var pair = snippet.split(':');
			
			return {
				name: utils.trim(pair.shift()),
				// replace ${0} tabstop to produce valid vendor-prefixed values
				// where possible
				value: utils.trim(pair.join(':')).replace(/^(\$\{0\}|\$0)(\s*;?)$/, '${1}$2')
			};
		},
		
		getSyntaxPreference: getSyntaxPreference,
		transformSnippet: transformSnippet
	};
});
/**
 * 'Expand Abbreviation' handler that parses gradient definition from under 
 * cursor and updates CSS rule with vendor-prefixed values.
 * 
 * @memberOf __cssGradientHandlerDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('cssGradient', function(require, _) {
	var defaultLinearDirections = ['top', 'to bottom', '0deg'];
	/** Back-reference to current module */
	var module = null;
	
	var cssSyntaxes = ['css', 'less', 'sass', 'scss', 'stylus', 'styl'];
	
	var reDeg = /\d+deg/i;
	var reKeyword = /top|bottom|left|right/i;
	
	// XXX define preferences
	/** @type preferences */
	var prefs = require('preferences');
	prefs.define('css.gradient.prefixes', 'webkit, moz, o',
			'A comma-separated list of vendor-prefixes for which values should ' 
			+ 'be generated.');
	
	prefs.define('css.gradient.oldWebkit', true,
			'Generate gradient definition for old Webkit implementations');
	
	prefs.define('css.gradient.omitDefaultDirection', true,
		'Do not output default direction definition in generated gradients.');
	
	prefs.define('css.gradient.defaultProperty', 'background-image',
		'When gradient expanded outside CSS value context, it will produce '
			+ 'properties with this name.');
	
	prefs.define('css.gradient.fallback', false,
			'With this option enabled, CSS gradient generator will produce '
			+ '<code>background-color</code> property with gradient first color '
			+ 'as fallback for old browsers.');
	
	function normalizeSpace(str) {
		return require('utils').trim(str).replace(/\s+/g, ' ');
	}
	
	/**
	 * Parses linear gradient definition
	 * @param {String}
	 */
	function parseLinearGradient(gradient) {
		var direction = defaultLinearDirections[0];
		
		// extract tokens
		/** @type StringStream */
		var stream = require('stringStream').create(require('utils').trim(gradient));
		var colorStops = [], ch;
		while ((ch = stream.next())) {
			if (stream.peek() == ',') {
				colorStops.push(stream.current());
				stream.next();
				stream.eatSpace();
				stream.start = stream.pos;
			} else if (ch == '(') { // color definition, like 'rgb(0,0,0)'
				stream.skipTo(')');
			}
		}
		
		// add last token
		colorStops.push(stream.current());
		colorStops = _.compact(_.map(colorStops, normalizeSpace));
		
		if (!colorStops.length)
			return null;
		
		// let's see if the first color stop is actually a direction
		if (reDeg.test(colorStops[0]) || reKeyword.test(colorStops[0])) {
			direction = colorStops.shift();
		}
		
		return {
			type: 'linear',
			direction: direction,
			colorStops: _.map(colorStops, parseColorStop)
		};
	}
	
	/**
	 * Parses color stop definition
	 * @param {String} colorStop
	 * @returns {Object}
	 */
	function parseColorStop(colorStop) {
		colorStop = normalizeSpace(colorStop);
		
		// find color declaration
		// first, try complex color declaration, like rgb(0,0,0)
		var color = null;
		colorStop = colorStop.replace(/^(\w+\(.+?\))\s*/, function(str, c) {
			color = c;
			return '';
		});
		
		if (!color) {
			// try simple declaration, like yellow, #fco, #ffffff, etc.
			var parts = colorStop.split(' ');
			color = parts[0];
			colorStop = parts[1] || '';
		}
		
		var result = {
			color: color
		};
		
		if (colorStop) {
			// there's position in color stop definition
			colorStop.replace(/^(\-?[\d\.]+)([a-z%]+)?$/, function(str, pos, unit) {
				result.position = pos;
				if (~pos.indexOf('.')) {
					unit = '';
				} else if (!unit) {
					unit = '%';
				}
				
				if (unit)
					result.unit = unit;
			});
		}
		
		return result;
	}
	
	/**
	 * Resolves property name (abbreviation): searches for snippet definition in 
	 * 'resources' and returns new name of matched property
	 */
	function resolvePropertyName(name, syntax) {
		var res = require('resources');
		var prefs = require('preferences');
		var snippet = res.findSnippet(syntax, name);
		
		if (!snippet && prefs.get('css.fuzzySearch')) {
			snippet = res.fuzzyFindSnippet(syntax, name, 
					parseFloat(prefs.get('css.fuzzySearchMinScore')));
		}
		
		if (snippet) {
			if (!_.isString(snippet)) {
				snippet = snippet.data;
			}
			
			return require('cssResolver').splitSnippet(snippet).name;
		}
	}
	
	/**
	 * Fills-out implied positions in color-stops. This function is useful for
	 * old Webkit gradient definitions
	 */
	function fillImpliedPositions(colorStops) {
		var from = 0;
		
		_.each(colorStops, function(cs, i) {
			// make sure that first and last positions are defined
			if (!i)
				return cs.position = cs.position || 0;
			
			if (i == colorStops.length - 1 && !('position' in cs))
				cs.position = 1;
			
			if ('position' in cs) {
				var start = colorStops[from].position || 0;
				var step = (cs.position - start) / (i - from);
				_.each(colorStops.slice(from, i), function(cs2, j) {
					cs2.position = start + step * j;
				});
				
				from = i;
			}
		});
	}
	
	/**
	 * Returns textual version of direction expressed in degrees
	 * @param {String} direction
	 * @returns {String}
	 */
	function textualDirection(direction) {
		var angle = parseFloat(direction);
		
		if(!_.isNaN(angle)) {
			switch(angle % 360) {
				case 0:   return 'left';
				case 90:  return 'bottom';
				case 180: return 'right';
				case 240: return 'top';
			}
		}
		
		return direction;
	}
	
	/**
	 * Creates direction definition for old Webkit gradients
	 * @param {String} direction
	 * @returns {String}
	 */
	function oldWebkitDirection(direction) {
		direction = textualDirection(direction);
		
		if(reDeg.test(direction))
			throw "The direction is an angle that can’t be converted.";
		
		var v = function(pos) {
			return ~direction.indexOf(pos) ? '100%' : '0';
		};
		
		return v('right') + ' ' + v('bottom') + ', ' + v('left') + ' ' + v('top');
	}
	
	function getPrefixedNames(name) {
		var prefixes = prefs.getArray('css.gradient.prefixes');
		var names = prefixes 
			? _.map(prefixes, function(p) {
				return '-' + p + '-' + name;
			}) 
			: [];
		
		names.push(name);
		
		return names;
	}
	
	/**
	 * Returns list of CSS properties with gradient
	 * @param {Object} gradient
	 * @param {String} propertyName Original CSS property name
	 * @returns {Array}
	 */
	function getPropertiesForGradient(gradient, propertyName) {
		var props = [];
		var css = require('cssResolver');
		
		if (prefs.get('css.gradient.fallback') && ~propertyName.toLowerCase().indexOf('background')) {
			props.push({
				name: 'background-color',
				value: '${1:' + gradient.colorStops[0].color + '}'
			});
		}
		
		_.each(prefs.getArray('css.gradient.prefixes'), function(prefix) {
			var name = css.prefixed(propertyName, prefix);
			if (prefix == 'webkit' && prefs.get('css.gradient.oldWebkit')) {
				try {
					props.push({
						name: name,
						value: module.oldWebkitLinearGradient(gradient)
					});
				} catch(e) {}
			}
			
			props.push({
				name: name,
				value: module.toString(gradient, prefix)
			});
		});
		
		return props.sort(function(a, b) {
			return b.name.length - a.name.length;
		});
	}
	
	/**
	 * Pastes gradient definition into CSS rule with correct vendor-prefixes
	 * @param {EditElement} property Matched CSS property
	 * @param {Object} gradient Parsed gradient
	 * @param {Range} valueRange If passed, only this range within property 
	 * value will be replaced with gradient. Otherwise, full value will be 
	 * replaced
	 */
	function pasteGradient(property, gradient, valueRange) {
		var rule = property.parent;
		var utils = require('utils');
		var alignVendor = require('preferences').get('css.alignVendor');
		
		// we may have aligned gradient definitions: find the smallest value
		// separator
		var sep = property.styleSeparator;
		var before = property.styleBefore;
		
		// first, remove all properties within CSS rule with the same name and
		// gradient definition
		_.each(rule.getAll(getPrefixedNames(property.name())), function(item) {
			if (item != property && /gradient/i.test(item.value())) {
				if (item.styleSeparator.length < sep.length) {
					sep = item.styleSeparator;
				}
				if (item.styleBefore.length < before.length) {
					before = item.styleBefore;
				}
				rule.remove(item);
			}
		});
		
		if (alignVendor) {
			// update prefix
			if (before != property.styleBefore) {
				var fullRange = property.fullRange();
				rule._updateSource(before, fullRange.start, fullRange.start + property.styleBefore.length);
				property.styleBefore = before;
			}
			
			// update separator value
			if (sep != property.styleSeparator) {
				rule._updateSource(sep, property.nameRange().end, property.valueRange().start);
				property.styleSeparator = sep;
			}
		}
		
		var value = property.value();
		if (!valueRange)
			valueRange = require('range').create(0, property.value());
		
		var val = function(v) {
			return utils.replaceSubstring(value, v, valueRange);
		};
		
		// put vanilla-clean gradient definition into current rule
		property.value(val(module.toString(gradient)) + '${2}');
		
		// create list of properties to insert
		var propsToInsert = getPropertiesForGradient(gradient, property.name());
		
		// align prefixed values
		if (alignVendor) {
			var values = _.pluck(propsToInsert, 'value');
			var names = _.pluck(propsToInsert, 'name');
			values.push(property.value());
			names.push(property.name());
			
			var valuePads = utils.getStringsPads(_.map(values, function(v) {
				return v.substring(0, v.indexOf('('));
			}));
			
			var namePads = utils.getStringsPads(names);
			property.name(_.last(namePads) + property.name());
			
			_.each(propsToInsert, function(prop, i) {
				prop.name = namePads[i] + prop.name;
				prop.value = valuePads[i] + prop.value;
			});
			
			property.value(_.last(valuePads) + property.value());
		}
		
		// put vendor-prefixed definitions before current rule
		_.each(propsToInsert, function(prop) {
			rule.add(prop.name, prop.value, rule.indexOf(property));
		});
	}
	
	/**
	 * Search for gradient definition inside CSS property value
	 */
	function findGradient(cssProp) {
		var value = cssProp.value();
		var gradient = null;
		var matchedPart = _.find(cssProp.valueParts(), function(part) {
			return gradient = module.parse(part.substring(value));
		});
		
		if (matchedPart && gradient) {
			return {
				gradient: gradient,
				valueRange: matchedPart
			};
		}
		
		return null;
	}
	
	/**
	 * Tries to expand gradient outside CSS value 
	 * @param {IEmmetEditor} editor
	 * @param {String} syntax
	 */
	function expandGradientOutsideValue(editor, syntax) {
		var propertyName = prefs.get('css.gradient.defaultProperty');
		
		if (!propertyName)
			return false;
		
		// assuming that gradient definition is written on new line,
		// do a simplified parsing
		var content = String(editor.getContent());
		/** @type Range */
		var lineRange = require('range').create(editor.getCurrentLineRange());
		
		// get line content and adjust range with padding
		var line = lineRange.substring(content)
			.replace(/^\s+/, function(pad) {
				lineRange.start += pad.length;
				return '';
			})
			.replace(/\s+$/, function(pad) {
				lineRange.end -= pad.length;
				return '';
			});
		
		var css = require('cssResolver');
		var gradient = module.parse(line);
		if (gradient) {
			var props = getPropertiesForGradient(gradient, propertyName);
			props.push({
				name: propertyName,
				value: module.toString(gradient) + '${2}'
			});
			
			var sep = css.getSyntaxPreference('valueSeparator', syntax);
			var end = css.getSyntaxPreference('propertyEnd', syntax);
			
			if (require('preferences').get('css.alignVendor')) {
				var pads = require('utils').getStringsPads(_.map(props, function(prop) {
					return prop.value.substring(0, prop.value.indexOf('('));
				}));
				_.each(props, function(prop, i) {
					prop.value = pads[i] + prop.value;
				});
			}
			
			props = _.map(props, function(item) {
				return item.name + sep + item.value + end;
			});
			
			editor.replaceContent(props.join('\n'), lineRange.start, lineRange.end);
			return true;
		}
		
		return false;
	}
	
	/**
	 * Search for gradient definition inside CSS value under cursor
	 * @param {String} content
	 * @param {Number} pos
	 * @returns {Object}
	 */
	function findGradientFromPosition(content, pos) {
		var cssProp = null;
		/** @type EditContainer */
		var cssRule = require('cssEditTree').parseFromPosition(content, pos, true);
		
		if (cssRule) {
			cssProp = cssRule.itemFromPosition(pos, true);
			if (!cssProp) {
				// in case user just started writing CSS property
				// and didn't include semicolon–try another approach
				cssProp = _.find(cssRule.list(), function(elem) {
					return elem.range(true).end == pos;
				});
			}
		}
		
		return {
			rule: cssRule,
			property: cssProp
		};
	}
	
	// XXX register expand abbreviation handler
	/**
	 * @param {IEmmetEditor} editor
	 * @param {String} syntax
	 * @param {String} profile
	 */
	require('expandAbbreviation').addHandler(function(editor, syntax, profile) {
		var info = require('editorUtils').outputInfo(editor, syntax, profile);
		if (!_.include(cssSyntaxes, info.syntax))
			return false;
		
		// let's see if we are expanding gradient definition
		var caret = editor.getCaretPos();
		var content = info.content;
		var css = findGradientFromPosition(content, caret);
		
		if (css.property) {
			// make sure that caret is inside property value with gradient 
			// definition
			var g = findGradient(css.property);
			if (g) {
				var ruleStart = css.rule.options.offset || 0;
				var ruleEnd = ruleStart + css.rule.toString().length;
				
				// Handle special case:
				// user wrote gradient definition between existing CSS 
				// properties and did not finished it with semicolon.
				// In this case, we have semicolon right after gradient 
				// definition and re-parse rule again
				if (/[\n\r]/.test(css.property.value())) {
					// insert semicolon at the end of gradient definition
					var insertPos = css.property.valueRange(true).start + g.valueRange.end;
					content = require('utils').replaceSubstring(content, ';', insertPos);
					var newCss = findGradientFromPosition(content, caret);
					if (newCss.property) {
						g = findGradient(newCss.property);
						css = newCss;
					}
				}
				
				// make sure current property has terminating semicolon
				css.property.end(';');
				
				// resolve CSS property name
				var resolvedName = resolvePropertyName(css.property.name(), syntax);
				if (resolvedName) {
					css.property.name(resolvedName);
				}
				
				pasteGradient(css.property, g.gradient, g.valueRange);
				editor.replaceContent(css.rule.toString(), ruleStart, ruleEnd, true);
				return true;
			}
		}
		
		return expandGradientOutsideValue(editor, syntax);
	});
	
	// XXX register "Reflect CSS Value" action delegate
	/**
	 * @param {EditElement} property
	 */
	require('reflectCSSValue').addHandler(function(property) {
		var utils = require('utils');
		
		var g = findGradient(property);
		if (!g)
			return false;
		
		var value = property.value();
		var val = function(v) {
			return utils.replaceSubstring(value, v, g.valueRange);
		};
		
		// reflect value for properties with the same name
		_.each(property.parent.getAll(getPrefixedNames(property.name())), function(prop) {
			if (prop === property)
				return;
			
			// check if property value starts with gradient definition
			var m = prop.value().match(/^\s*(\-([a-z]+)\-)?linear\-gradient/);
			if (m) {
				prop.value(val(module.toString(g.gradient, m[2] || '')));
			} else if ((m = prop.value().match(/\s*\-webkit\-gradient/))) {
				// old webkit gradient definition
				prop.value(val(module.oldWebkitLinearGradient(g.gradient)));
			}
		});
		
		return true;
	});
	
	return module = {
		/**
		 * Parses gradient definition
		 * @param {String} gradient
		 * @returns {Object}
		 */
		parse: function(gradient) {
			var result = null;
			require('utils').trim(gradient).replace(/^([\w\-]+)\((.+?)\)$/, function(str, type, definition) {
				// remove vendor prefix
				type = type.toLowerCase().replace(/^\-[a-z]+\-/, '');
				if (type == 'linear-gradient' || type == 'lg') {
					result = parseLinearGradient(definition);
					return '';
				}
				
				return str;
			});
			
			return result;
		},
		
		/**
		 * Produces linear gradient definition used in early Webkit 
		 * implementations
		 * @param {Object} gradient Parsed gradient
		 * @returns {String}
		 */
		oldWebkitLinearGradient: function(gradient) {
			if (_.isString(gradient))
				gradient = this.parse(gradient);
			
			if (!gradient)
				return null;
			
			var colorStops = _.map(gradient.colorStops, _.clone);
			
			// normalize color-stops position
			_.each(colorStops, function(cs) {
				if (!('position' in cs)) // implied position
					return;
				
				if (~cs.position.indexOf('.') || cs.unit == '%') {
					cs.position = parseFloat(cs.position) / (cs.unit == '%' ? 100 : 1);
				} else {
					throw "Can't convert color stop '" + (cs.position + (cs.unit || '')) + "'";
				}
			});
			
			fillImpliedPositions(colorStops);
			
			// transform color-stops into string representation
			colorStops = _.map(colorStops, function(cs, i) {
				if (!cs.position && !i)
					return 'from(' + cs.color + ')';
				
				if (cs.position == 1 && i == colorStops.length - 1)
					return 'to(' + cs.color + ')';
				
				return 'color-stop(' + (cs.position.toFixed(2).replace(/\.?0+$/, '')) + ', ' + cs.color + ')';
			});
			
			return '-webkit-gradient(linear, ' 
				+ oldWebkitDirection(gradient.direction)
				+ ', '
				+ colorStops.join(', ')
				+ ')';
		},
		
		/**
		 * Returns string representation of parsed gradient
		 * @param {Object} gradient Parsed gradient
		 * @param {String} prefix Vendor prefix
		 * @returns {String}
		 */
		toString: function(gradient, prefix) {
			if (gradient.type == 'linear') {
				var fn = (prefix ? '-' + prefix + '-' : '') + 'linear-gradient';
				
				// transform color-stops
				var colorStops = _.map(gradient.colorStops, function(cs) {
					return cs.color + ('position' in cs 
							? ' ' + cs.position + (cs.unit || '')
							: '');
				});
				
				if (gradient.direction 
						&& (!prefs.get('css.gradient.omitDefaultDirection') 
						|| !_.include(defaultLinearDirections, gradient.direction))) {
					colorStops.unshift(gradient.direction);
				}
				
				return fn + '(' + colorStops.join(', ') + ')';
			}
		}
	};
});/**
 * Module adds support for generators: a regexp-based abbreviation resolver 
 * that can produce custom output.
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	/** @type HandlerList */
	var generators = require('handlerList').create();
	var resources = require('resources');
	
	_.extend(resources, {
		/**
		 * Add generator. A generator function <code>fn</code> will be called 
		 * only if current abbreviation matches <code>regexp</code> regular 
		 * expression and this function should return <code>null</code> if
		 * abbreviation cannot be resolved
		 * @param {RegExp} regexp Regular expression for abbreviation element name
		 * @param {Function} fn Resolver function
		 * @param {Object} options Options list as described in 
		 * {@link HandlerList#add()} method
		 */
		addGenerator: function(regexp, fn, options) {
			if (_.isString(regexp))
				regexp = new RegExp(regexp);
			
			generators.add(function(node, syntax) {
				var m;
				if ((m = regexp.exec(node.name()))) {
					return fn(m, node, syntax);
				}
				
				return null;
			}, options);
		}
	});
	
	resources.addResolver(function() {
		return generators.exec(null, _.toArray(arguments));
	});
});/**
 * Module for resolving tag names: returns best matched tag name for child
 * element based on passed parent's tag name. Also provides utility function
 * for element type detection (inline, block-level, empty)
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.define('tagName', function(require, _) {
	var elementTypes = {
//		empty: 'area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed,keygen,command'.split(','),
		empty: [],
		blockLevel: 'address,applet,blockquote,button,center,dd,del,dir,div,dl,dt,fieldset,form,frameset,hr,iframe,ins,isindex,li,link,map,menu,noframes,noscript,object,ol,p,pre,script,table,tbody,td,tfoot,th,thead,tr,ul,h1,h2,h3,h4,h5,h6'.split(','),
		inlineLevel: 'a,abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,object,q,s,samp,select,small,span,strike,strong,sub,sup,textarea,tt,u,var'.split(',')
	};
	
	var elementMap = {
		'p': 'span',
		'ul': 'li',
		'ol': 'li',
		'table': 'tr',
		'tr': 'td',
		'tbody': 'tr',
		'thead': 'tr',
		'tfoot': 'tr',
		'colgroup': 'col',
		'select': 'option',
		'optgroup': 'option',
		'audio': 'source',
		'video': 'source',
		'object': 'param',
		'map': 'area'
	};
	
	return {
		/**
		 * Returns best matched child element name for passed parent's
		 * tag name
		 * @param {String} name
		 * @returns {String}
		 * @memberOf tagName
		 */
		resolve: function(name) {
			name = (name || '').toLowerCase();
			
			if (name in elementMap)
				return this.getMapping(name);
			
			if (this.isInlineLevel(name))
				return 'span';
			
			return 'div';
		},
		
		/**
		 * Returns mapped child element name for passed parent's name 
		 * @param {String} name
		 * @returns {String}
		 */
		getMapping: function(name) {
			return elementMap[name.toLowerCase()];
		},
		
		/**
		 * Check if passed element name belongs to inline-level element
		 * @param {String} name
		 * @returns {Boolean}
		 */
		isInlineLevel: function(name) {
			return this.isTypeOf(name, 'inlineLevel');
		},
		
		/**
		 * Check if passed element belongs to block-level element.
		 * For better matching of unknown elements (for XML, for example), 
		 * you should use <code>!this.isInlineLevel(name)</code>
		 * @returns {Boolean}
		 */
		isBlockLevel: function(name) {
			return this.isTypeOf(name, 'blockLevel');
		},
		
		/**
		 * Check if passed element is void (i.e. should not have closing tag).
		 * @returns {Boolean}
		 */
		isEmptyElement: function(name) {
			return this.isTypeOf(name, 'empty');
		},
		
		/**
		 * Generic function for testing if element name belongs to specified
		 * elements collection
		 * @param {String} name Element name
		 * @param {String} type Collection name
		 * @returns {Boolean}
		 */
		isTypeOf: function(name, type) {
			return _.include(elementTypes[type], name);
		},
		
		/**
		 * Adds new parent–child mapping
		 * @param {String} parent
		 * @param {String} child
		 */
		addMapping: function(parent, child) {
			elementMap[parent] = child;
		},
		
		/**
		 * Removes parent-child mapping
		 */
		removeMapping: function(parent) {
			if (parent in elementMap)
				delete elementMap[parent];
		},
		
		/**
		 * Adds new element into collection
		 * @param {String} name Element name
		 * @param {String} collection Collection name
		 */
		addElementToCollection: function(name, collection) {
			if (!elementTypes[collection])
				elementTypes[collection] = [];
			
			var col = this.getCollection(collection);
			if (!_.include(col, name))
				col.push(name);
		},
		
		/**
		 * Removes element name from specified collection
		 * @param {String} name Element name
		 * @param {String} collection Collection name
		 * @returns
		 */
		removeElementFromCollection: function(name, collection) {
			if (collection in elementTypes) {
				elementTypes[collection] = _.without(this.getCollection(collection), name);
			}
		},
		
		/**
		 * Returns elements name collection
		 * @param {String} name Collection name
		 * @returns {Array}
		 */
		getCollection: function(name) {
			return elementTypes[name];
		}
	};
});/**
 * Filter for aiding of writing elements with complex class names as described
 * in Yandex's BEM (Block, Element, Modifier) methodology. This filter will
 * automatically inherit block and element names from parent elements and insert
 * them into child element classes
 * @memberOf __bemFilterDefine
 * @constructor
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	var prefs = require('preferences');
	prefs.define('bem.elementSeparator', '__', 'Class name’s element separator.');
	prefs.define('bem.modifierSeparator', '_', 'Class name’s modifier separator.');
	prefs.define('bem.shortElementPrefix', '-', 
			'Symbol for describing short “block-element” notation. Class names '
			+ 'prefixed with this symbol will be treated as element name for parent‘s '
			+ 'block name. Each symbol instance traverses one level up in parsed ' 
			+ 'tree for block name lookup. Empty value will disable short notation.');
	
	var shouldRunHtmlFilter = false;
	
	function getSeparators() {
		return {
			element: prefs.get('bem.elementSeparator'),
			modifier: prefs.get('bem.modifierSeparator')
		};
	}
	
	/**
	 * @param {AbbreviationNode} item
	 */
	function bemParse(item) {
		if (require('abbreviationUtils').isSnippet(item))
			return item;
		
		// save BEM stuff in cache for faster lookups
		item.__bem = {
			block: '',
			element: '',
			modifier: ''
		};
		
		var classNames = normalizeClassName(item.attribute('class')).split(' ');
		
		// guess best match for block name
		var reBlockName = /^[a-z]\-/i;
		item.__bem.block = _.find(classNames, function(name) {
			return reBlockName.test(name);
		});
		
		// guessing doesn't worked, pick first class name as block name
		if (!item.__bem.block) {
			reBlockName = /^[a-z]/i;
			item.__bem.block = _.find(classNames, function(name) {
				return reBlockName.test(name);
			}) || '';
		}
		
		classNames = _.chain(classNames)
			.map(function(name) {return processClassName(name, item);})
			.flatten()
			.uniq()
			.value()
			.join(' ');
		
		if (classNames)
			item.attribute('class', classNames);
		
		return item;
	}
	
	/**
	 * @param {String} className
	 * @returns {String}
	 */
	function normalizeClassName(className) {
		var utils = require('utils');
		className = (' ' + (className || '') + ' ').replace(/\s+/g, ' ');
		
		var shortSymbol = prefs.get('bem.shortElementPrefix');
		if (shortSymbol) {
			var re = new RegExp('\\s(' + utils.escapeForRegexp(shortSymbol) + '+)', 'g');
			className = className.replace(re, function(str, p1) {
				return ' ' + utils.repeatString(getSeparators().element, p1.length);
			});
		}
		
		return utils.trim(className);
	}
	
	/**
	 * Processes class name
	 * @param {String} name Class name item to process
	 * @param {AbbreviationNode} item Host node for provided class name
	 * @returns Processed class name. May return <code>Array</code> of
	 * class names 
	 */
	function processClassName(name, item) {
		name = transformClassName(name, item, 'element');
		name = transformClassName(name, item, 'modifier');
		
		// expand class name
		// possible values:
		// * block__element
		// * block__element_modifier
		// * block__element_modifier1_modifier2
		// * block_modifier
		var block = '', element = '', modifier = '';
		var separators = getSeparators();
		if (~name.indexOf(separators.element)) {
			var blockElem = name.split(separators.element);
			var elemModifiers = blockElem[1].split(separators.modifier);
			
			block = blockElem[0];
			element = elemModifiers.shift();
			modifier = elemModifiers.join(separators.modifier);
		} else if (~name.indexOf(separators.modifier)) {
			var blockModifiers = name.split(separators.modifier);
			
			block = blockModifiers.shift();
			modifier = blockModifiers.join(separators.modifier);
		}
		
		if (block || element || modifier) {
			if (!block) {
				block = item.__bem.block;
			}
			
			// inherit parent bem element, if exists
//			if (item.parent && item.parent.__bem && item.parent.__bem.element)
//				element = item.parent.__bem.element + separators.element + element;
			
			// produce multiple classes
			var prefix = block;
			var result = [];
			
			if (element) {
				prefix += separators.element + element;
				result.push(prefix);
			} else {
				result.push(prefix);
			}
			
			if (modifier) {
				result.push(prefix + separators.modifier + modifier);
			}
			
			item.__bem.block = block;
			item.__bem.element = element;
			item.__bem.modifier = modifier;
			
			return result;
		}
		
		// ...otherwise, return processed or original class name
		return name;
	}
	
	/**
	 * Low-level function to transform user-typed class name into full BEM class
	 * @param {String} name Class name item to process
	 * @param {AbbreviationNode} item Host node for provided class name
	 * @param {String} entityType Type of entity to be tried to transform 
	 * ('element' or 'modifier')
	 * @returns {String} Processed class name or original one if it can't be
	 * transformed
	 */
	function transformClassName(name, item, entityType) {
		var separators = getSeparators();
		var reSep = new RegExp('^(' + separators[entityType] + ')+', 'g');
		if (reSep.test(name)) {
			var depth = 0; // parent lookup depth
			var cleanName = name.replace(reSep, function(str) {
				depth = str.length / separators[entityType].length;
				return '';
			});
			
			// find donor element
			var donor = item;
			while (donor.parent && depth--) {
				donor = donor.parent;
			}
			
			if (!donor || !donor.__bem)
				donor = item;
			
			if (donor && donor.__bem) {
				var prefix = donor.__bem.block;
				
				// decide if we should inherit element name
//				if (entityType == 'element') {
//					var curElem = cleanName.split(separators.modifier, 1)[0];
//					if (donor.__bem.element && donor.__bem.element != curElem)
//						prefix += separators.element + donor.__bem.element;
//				}
				
				if (entityType == 'modifier' &&  donor.__bem.element)
					prefix += separators.element + donor.__bem.element;
				
				return prefix + separators[entityType] + cleanName;
			}
		}
		
		return name;
	}
	
	/**
	 * Recursive function for processing tags, which extends class names 
	 * according to BEM specs: http://bem.github.com/bem-method/pages/beginning/beginning.ru.html
	 * <br><br>
	 * It does several things:<br>
	 * <ul>
	 * <li>Expands complex class name (according to BEM symbol semantics):
	 * .block__elem_modifier → .block.block__elem.block__elem_modifier
	 * </li>
	 * <li>Inherits block name on child elements: 
	 * .b-block > .__el > .__el → .b-block > .b-block__el > .b-block__el__el
	 * </li>
	 * <li>Treats first dash symbol as '__'</li>
	 * <li>Double underscore (or typographic '–') is also treated as an element 
	 * level lookup, e.g. ____el will search for element definition in parent’s 
	 * parent element:
	 * .b-block > .__el1 > .____el2 → .b-block > .b-block__el1 > .b-block__el2
	 * </li>
	 * </ul>
	 * 
	 * @param {AbbreviationNode} tree
	 * @param {Object} profile
	 */
	function process(tree, profile) {
		if (tree.name)
			bemParse(tree, profile);
		
		var abbrUtils = require('abbreviationUtils');
		_.each(tree.children, function(item) {
			process(item, profile);
			if (!abbrUtils.isSnippet(item) && item.start)
				shouldRunHtmlFilter = true;
		});
		
		return tree;
	}
	
	require('filters').add('bem', function(tree, profile) {
		shouldRunHtmlFilter = false;
		tree = process(tree, profile);
		// in case 'bem' filter is applied after 'html' filter: run it again
		// to update output
		if (shouldRunHtmlFilter) {
			tree = require('filters').apply(tree, 'html', profile);
		}
		
		return tree;
	});
});

/**
 * Comment important tags (with 'id' and 'class' attributes)
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __commentFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	// define some preferences
	/** @type emmet.preferences */
	var prefs = require('preferences');
	
	prefs.define('filter.commentAfter', 
			'\n<!-- /<%= attr("id", "#") %><%= attr("class", ".") %> -->',
			'A definition of comment that should be placed <i>after</i> matched '
			+ 'element when <code>comment</code> filter is applied. This definition '
			+ 'is an ERB-style template passed to <code>_.template()</code> '
			+ 'function (see Underscore.js docs for details). In template context, '
			+ 'the following properties and functions are availabe:\n'
			+ '<ul>'
			
			+ '<li><code>attr(name, before, after)</code> – a function that outputs' 
			+ 'specified attribute value concatenated with <code>before</code> ' 
			+ 'and <code>after</code> strings. If attribute doesn\'t exists, the ' 
			+ 'empty string will be returned.</li>'
			
			+ '<li><code>node</code> – current node (instance of <code>AbbreviationNode</code>)</li>'
			
			+ '<li><code>name</code> – name of current tag</li>'
			
			+ '<li><code>padding</code> – current string padding, can be used ' 
			+ 'for formatting</li>'
			
			+'</ul>');
	
	prefs.define('filter.commentBefore', 
			'',
			'A definition of comment that should be placed <i>before</i> matched '
			+ 'element when <code>comment</code> filter is applied. '
			+ 'For more info, read description of <code>filter.commentAfter</code> '
			+ 'property');
	
	prefs.define('filter.commentTrigger', 'id, class',
			'A comma-separated list of attribute names that should exist in abbreviatoin '
			+ 'where comment should be added. If you wish to add comment for '
			+ 'every element, set this option to <code>*</code>');
	
	/**
	 * Add comments to tag
	 * @param {AbbreviationNode} node
	 */
	function addComments(node, templateBefore, templateAfter) {
		var utils = require('utils');
		
		// check if comments should be added
		var trigger = prefs.get('filter.commentTrigger');
		if (trigger != '*') {
			var shouldAdd = _.find(trigger.split(','), function(name) {
				return !!node.attribute(utils.trim(name));
			});
			if (!shouldAdd) return;
		}
		
		var ctx = {
			node: node,
			name: node.name(),
			padding: node.parent ? node.parent.padding : '',
			attr: function(name, before, after) {
				var attr = node.attribute(name);
				if (attr) {
					return (before || '') + attr + (after || '');
				}
				
				return '';
			}
		};
		
		var nodeBefore = utils.normalizeNewline(templateBefore ? templateBefore(ctx) : '');
		var nodeAfter = utils.normalizeNewline(templateAfter ? templateAfter(ctx) : '');
		
		node.start = node.start.replace(/</, nodeBefore + '<');
		node.end = node.end.replace(/>/, '>' + nodeAfter);
	}
	
	function process(tree, before, after) {
		var abbrUtils = require('abbreviationUtils');
		_.each(tree.children, function(item) {
			if (abbrUtils.isBlock(item))
				addComments(item, before, after);
			
			process(item, before, after);
		});
			
		return tree;
	}
	
	require('filters').add('c', function(tree) {
		var templateBefore = _.template(prefs.get('filter.commentBefore'));
		var templateAfter = _.template(prefs.get('filter.commentAfter'));
		
		return process(tree, templateBefore, templateAfter);
	});
});
/**
 * Filter for escaping unsafe XML characters: <, >, &
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 */
emmet.exec(function(require, _) {
	var charMap = {
		'<': '&lt;',
		'>': '&gt;',
		'&': '&amp;'
	};
	
	function escapeChars(str) {
		return str.replace(/([<>&])/g, function(str, p1){
			return charMap[p1];
		});
	}
	
	require('filters').add('e', function process(tree) {
		_.each(tree.children, function(item) {
			item.start = escapeChars(item.start);
			item.end = escapeChars(item.end);
			item.content = escapeChars(item.content);
			process(item);
		});
		
		return tree;
	});
});/**
 * Generic formatting filter: creates proper indentation for each tree node,
 * placing "%s" placeholder where the actual output should be. You can use
 * this filter to preformat tree and then replace %s placeholder to whatever you
 * need. This filter should't be called directly from editor as a part 
 * of abbreviation.
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __formatFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _){
	var placeholder = '%s';
	
	/** @type preferences */
	var prefs = require('preferences');
	prefs.define('format.noIndentTags', 'html', 
			'A comma-separated list of tag names that should not get inner indentation.');
	
	prefs.define('format.forceIndentationForTags', 'body', 
		'A comma-separated list of tag names that should <em>always</em> get inner indentation.');
	
	/**
	 * Get indentation for given node
	 * @param {AbbreviationNode} node
	 * @returns {String}
	 */
	function getIndentation(node) {
		if (_.include(prefs.getArray('format.noIndentTags') || [], node.name())) {
			return '';
		}
		
		return require('resources').getVariable('indentation');
	}
	
	/**
	 * Test if passed node has block-level sibling element
	 * @param {AbbreviationNode} item
	 * @return {Boolean}
	 */
	function hasBlockSibling(item) {
		return item.parent && require('abbreviationUtils').hasBlockChildren(item.parent);
	}
	
	/**
	 * Test if passed item is very first child in parsed tree
	 * @param {AbbreviationNode} item
	 */
	function isVeryFirstChild(item) {
		return item.parent && !item.parent.parent && !item.index();
	}
	
	/**
	 * Check if a newline should be added before element
	 * @param {AbbreviationNode} node
	 * @param {OutputProfile} profile
	 * @return {Boolean}
	 */
	function shouldAddLineBreak(node, profile) {
		var abbrUtils = require('abbreviationUtils');
		if (profile.tag_nl === true || abbrUtils.isBlock(node))
			return true;
		
		if (!node.parent || !profile.inline_break)
			return false;
		
		// check if there are required amount of adjacent inline element
		return shouldFormatInline(node.parent, profile);
}
	
	/**
	 * Need to add newline because <code>item</code> has too many inline children
	 * @param {AbbreviationNode} node
	 * @param {OutputProfile} profile
	 */
	function shouldBreakChild(node, profile) {
		// we need to test only one child element, because 
		// hasBlockChildren() method will do the rest
		return node.children.length && shouldAddLineBreak(node.children[0], profile);
	}
	
	function shouldFormatInline(node, profile) {
		var nodeCount = 0;
		var abbrUtils = require('abbreviationUtils');
		return !!_.find(node.children, function(child) {
			if (child.isTextNode() || !abbrUtils.isInline(child))
				nodeCount = 0;
			else if (abbrUtils.isInline(child))
				nodeCount++;
			
			if (nodeCount >= profile.inline_break)
				return true;
		});
	}
	
	function isRoot(item) {
		return !item.parent;
	}
	
	/**
	 * Processes element with matched resource of type <code>snippet</code>
	 * @param {AbbreviationNode} item
	 * @param {OutputProfile} profile
	 */
	function processSnippet(item, profile) {
		item.start = item.end = '';
		if (!isVeryFirstChild(item) && profile.tag_nl !== false && shouldAddLineBreak(item, profile)) {
			// check if we’re not inside inline element
			if (isRoot(item.parent) || !require('abbreviationUtils').isInline(item.parent)) {
				item.start = require('utils').getNewline() + item.start;
			}
		}
		
		return item;
	}
	
	/**
	 * Check if we should add line breaks inside inline element
	 * @param {AbbreviationNode} node
	 * @param {OutputProfile} profile
	 * @return {Boolean}
	 */
	function shouldBreakInsideInline(node, profile) {
		var abbrUtils = require('abbreviationUtils');
		var hasBlockElems = _.any(node.children, function(child) {
			if (abbrUtils.isSnippet(child))
				return false;
			
			return !abbrUtils.isInline(child);
		});
		
		if (!hasBlockElems) {
			return shouldFormatInline(node, profile);
		}
		
		return true;
	}
	
	/**
	 * Processes element with <code>tag</code> type
	 * @param {AbbreviationNode} item
	 * @param {OutputProfile} profile
	 */
	function processTag(item, profile) {
		item.start = item.end = placeholder;
		var utils = require('utils');
		var abbrUtils = require('abbreviationUtils');
		var isUnary = abbrUtils.isUnary(item);
		var nl = utils.getNewline();
		var indent = getIndentation(item);
			
		// formatting output
		if (profile.tag_nl !== false) {
			var forceNl = profile.tag_nl === true && (profile.tag_nl_leaf || item.children.length);
			if (!forceNl) {
				forceNl = _.include(prefs.getArray('format.forceIndentationForTags') || [], item.name());
			}
			
			// formatting block-level elements
			if (!item.isTextNode()) {
				if (shouldAddLineBreak(item, profile)) {
					// - do not indent the very first element
					// - do not indent first child of a snippet
					if (!isVeryFirstChild(item) && (!abbrUtils.isSnippet(item.parent) || item.index()))
						item.start = nl + item.start;
						
					if (abbrUtils.hasBlockChildren(item) || shouldBreakChild(item, profile) || (forceNl && !isUnary))
						item.end = nl + item.end;
						
					if (abbrUtils.hasTagsInContent(item) || (forceNl && !item.children.length && !isUnary))
						item.start += nl + indent;
				} else if (abbrUtils.isInline(item) && hasBlockSibling(item) && !isVeryFirstChild(item)) {
					item.start = nl + item.start;
				} else if (abbrUtils.isInline(item) && shouldBreakInsideInline(item, profile)) {
					item.end = nl + item.end;
				}
				
				item.padding = indent;
			}
		}
		
		return item;
	}
	
	/**
	 * Processes simplified tree, making it suitable for output as HTML structure
	 * @param {AbbreviationNode} tree
	 * @param {OutputProfile} profile
	 * @param {Number} level Depth level
	 */
	require('filters').add('_format', function process(tree, profile, level) {
		level = level || 0;
		var abbrUtils = require('abbreviationUtils');
		
		_.each(tree.children, function(item) {
			if (abbrUtils.isSnippet(item))
				processSnippet(item, profile, level);
			else
				processTag(item, profile, level);
			
			process(item, profile, level + 1);
		});
		
		return tree;
	});
});/**
 * Filter for producing HAML code from abbreviation.
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __hamlFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	function transformClassName(className) {
		return require('utils').trim(className).replace(/\s+/g, '.');
	}
	
	/**
	 * Creates HAML attributes string from tag according to profile settings
	 * @param {AbbreviationNode} tag
	 * @param {Object} profile
	 */
	function makeAttributesString(tag, profile) {
		var attrs = '';
		var otherAttrs = [];
		var attrQuote = profile.attributeQuote();
		var cursor = profile.cursor();
		
		_.each(tag.attributeList(), function(a) {
			var attrName = profile.attributeName(a.name);
			switch (attrName.toLowerCase()) {
				// use short notation for ID and CLASS attributes
				case 'id':
					attrs += '#' + (a.value || cursor);
					break;
				case 'class':
					attrs += '.' + transformClassName(a.value || cursor);
					break;
				// process other attributes
				default:
					otherAttrs.push(':' +attrName + ' => ' + attrQuote + (a.value || cursor) + attrQuote);
			}
		});
		
		if (otherAttrs.length)
			attrs += '{' + otherAttrs.join(', ') + '}';
		
		return attrs;
	}
	
	/**
	 * Processes element with <code>tag</code> type
	 * @param {AbbreviationNode} item
	 * @param {OutputProfile} profile
	 */
	function processTag(item, profile) {
		if (!item.parent)
			// looks like it's root element
			return item;
		
		var abbrUtils = require('abbreviationUtils');
		var utils = require('utils');
		
		var attrs = makeAttributesString(item, profile);
		var cursor = profile.cursor();
		var isUnary = abbrUtils.isUnary(item);
		var selfClosing = profile.self_closing_tag && isUnary ? '/' : '';
		var start= '';
			
		// define tag name
		var tagName = '%' + profile.tagName(item.name());
		if (tagName.toLowerCase() == '%div' && attrs && attrs.indexOf('{') == -1)
			// omit div tag
			tagName = '';
			
		item.end = '';
		start = tagName + attrs + selfClosing + ' ';
		
		var placeholder = '%s';
		// We can't just replace placeholder with new value because
		// JavaScript will treat double $ character as a single one, assuming
		// we're using RegExp literal.
		item.start = utils.replaceSubstring(item.start, start, item.start.indexOf(placeholder), placeholder);
		
		if (!item.children.length && !isUnary)
			item.start += cursor;
		
		return item;
	}
	
	/**
	 * Processes simplified tree, making it suitable for output as HTML structure
	 * @param {AbbreviationNode} tree
	 * @param {Object} profile
	 * @param {Number} level Depth level
	 */
	require('filters').add('haml', function process(tree, profile, level) {
		level = level || 0;
		var abbrUtils = require('abbreviationUtils');
		
		if (!level) {
			tree = require('filters').apply(tree, '_format', profile);
		}
		
		_.each(tree.children, function(item) {
			if (!abbrUtils.isSnippet(item))
				processTag(item, profile, level);
			
			process(item, profile, level + 1);
		});
		
		return tree;
	});
});/**
 * Filter that produces HTML tree
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __htmlFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
    
    var known_html_tags = " html head title base link meta style script noscript body section nav article aside h1 h2 h3 h4 h5 h6 hgroup header footer address p hr pre blockquote ol ul li dl dt dd figure figcaption div a em strong small s cite q dfn abbr data time code var samp kbd sub sup i b u mark ruby rt rp bdi bdo span br wbr ins del img iframe embed object param video audio source track canvas map area svg math table caption colgroup col tbody thead tfoot tr td th form fieldset legend label input button select datalist optgroup option textarea keygen output progress meter details summary command menu main template ";
                                    
	/**
	 * Creates HTML attributes string from tag according to profile settings
	 * @param {AbbreviationNode} node
	 * @param {OutputProfile} profile
	 */
	function makeAttributesString(node, profile) {
		var attrQuote = profile.attributeQuote();
		var cursor = profile.cursor();
		
		return _.map(node.attributeList(), function(a) {
			var attrName = profile.attributeName(a.name);
			return ' ' + attrName + '=' + attrQuote + (a.value || cursor) + attrQuote;
		}).join('');
	}
	
	/**
	 * Processes element with <code>tag</code> type
	 * @param {AbbreviationNode} item
	 * @param {OutputProfile} profile
	 */
	function processTag(item, profile) {
		if (!item.parent) // looks like it's root element
			return item;
		
		var abbrUtils = require('abbreviationUtils');
		var utils = require('utils');
		
		var attrs = makeAttributesString(item, profile); 
		var cursor = profile.cursor();
		var isUnary = abbrUtils.isUnary(item);
		var start= '';
		var end = '';

        if (item && item._name === item.abbreviation 
            && item.parent.children && item.parent.children.length === 1
            && item.parent.children[0] === item
            && item.parent.parent === null && item.children
            && item.children.length === 0) {
                                    
            var tagName = profile.tagName(item.name());
            tagName = tagName.toLowerCase();
            tagName = ' ' + tagName + ' ';
            if (known_html_tags.search(tagName) === -1) {
                item.start = '';
                item.end   = '';
                return item;
            }

        }

		// define opening and closing tags
		if (!item.isTextNode()) {
			var tagName = profile.tagName(item.name());
			if (isUnary) {
				start = '<' + tagName + attrs + profile.selfClosing() + '>';
				item.end = '';
			} else {
				start = '<' + tagName + attrs + '>';
				end = '</' + tagName + '>';
			}
		}
		
		var placeholder = '%s';
		// We can't just replace placeholder with new value because
		// JavaScript will treat double $ character as a single one, assuming
		// we're using RegExp literal.
		item.start = utils.replaceSubstring(item.start, start, item.start.indexOf(placeholder), placeholder);
		item.end = utils.replaceSubstring(item.end, end, item.end.indexOf(placeholder), placeholder);
		
		// should we put caret placeholder after opening tag?
		if (
				!item.children.length 
				&& !isUnary 
				&& !~item.content.indexOf(cursor)
				&& !require('tabStops').extract(item.content).tabstops.length
			) {
			item.start += cursor;
		}
		
		return item;
	}
	
	/**
	 * Processes simplified tree, making it suitable for output as HTML structure
	 * @param {AbbreviationNode} tree
	 * @param {Object} profile
	 * @param {Number} level Depth level
	 */
	require('filters').add('html', function process(tree, profile, level) {
		level = level || 0;
		var abbrUtils = require('abbreviationUtils');
		
		if (!level) {
			tree = require('filters').apply(tree, '_format', profile);
		}
		
		_.each(tree.children, function(item) {
			if (!abbrUtils.isSnippet(item))
				processTag(item, profile, level);
			
			process(item, profile, level + 1);
		});
		
		return tree;
	});
});/**
 * Output abbreviation on a single line (i.e. no line breaks)
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __singleLineFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	var rePad = /^\s+/;
	var reNl = /[\n\r]/g;
	
	require('filters').add('s', function process(tree) {
		var abbrUtils = require('abbreviationUtils');
		
		_.each(tree.children, function(item) {
			if (!abbrUtils.isSnippet(item)) {
				// remove padding from item 
				item.start = item.start.replace(rePad, '');
				item.end = item.end.replace(rePad, '');
			}
			
			// remove newlines 
			item.start = item.start.replace(reNl, '');
			item.end = item.end.replace(reNl, '');
			item.content = item.content.replace(reNl, '');
			
			process(item);
		});
		
		return tree;
	});
});
/**
 * Trim filter: removes characters at the beginning of the text
 * content that indicates lists: numbers, #, *, -, etc.
 * 
 * Useful for wrapping lists with abbreviation.
 * 
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * 
 * @constructor
 * @memberOf __trimFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	require('preferences').define('filter.trimRegexp', '[\\s|\\u00a0]*[\\d|#|\\-|\*|\\u2022]+\\.?\\s*',
			'Regular expression used to remove list markers (numbers, dashes, ' 
			+ 'bullets, etc.) in <code>t</code> (trim) filter. The trim filter '
			+ 'is useful for wrapping with abbreviation lists, pased from other ' 
			+ 'documents (for example, Word documents).');
	
	function process(tree, re) {
		_.each(tree.children, function(item) {
			if (item.content)
				item.content = item.content.replace(re, '');
			
			process(item, re);
		});
		
		return tree;
	}
	
	require('filters').add('t', function(tree) {
		var re = new RegExp(require('preferences').get('filter.trimRegexp'));
		return process(tree, re);
	});
});
/**
 * Filter for trimming "select" attributes from some tags that contains
 * child elements
 * @author Sergey Chikuyonok (serge.che@gmail.com)
 * @link http://chikuyonok.ru
 * 
 * @constructor
 * @memberOf __xslFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
	var tags = {
		'xsl:variable': 1,
		'xsl:with-param': 1
	};
	
	/**
	 * Removes "select" attribute from node
	 * @param {AbbreviationNode} node
	 */
	function trimAttribute(node) {
		node.start = node.start.replace(/\s+select\s*=\s*(['"]).*?\1/, '');
	}
	
	require('filters').add('xsl', function process(tree) {
		var abbrUtils = require('abbreviationUtils');
		_.each(tree.children, function(item) {
			if (!abbrUtils.isSnippet(item)
					&& (item.name() || '').toLowerCase() in tags 
					&& item.children.length)
				trimAttribute(item);
			process(item);
		});
		
		return tree;
	});
});/**
 * "Lorem ipsum" text generator. Matches <code>lipsum(num)?</code> or 
 * <code>lorem(num)?</code> abbreviation.
 * This code is based on Django's contribution: 
 * https://code.djangoproject.com/browser/django/trunk/django/contrib/webdesign/lorem_ipsum.py
 * <br><br>
 * Examples to test:<br>
 * <code>lipsum</code> – generates 30 words text.<br>
 * <code>lipsum*6</code> – generates 6 paragraphs (autowrapped with &lt;p&gt; element) of text.<br>
 * <code>ol>lipsum10*5</code> — generates ordered list with 5 list items (autowrapped with &lt;li&gt; tag)
 * with text of 10 words on each line<br>
 * <code>span*3>lipsum20</code> – generates 3 paragraphs of 20-words text, each wrapped with &lt;span&gt; element .
 * Each paragraph phrase is unique   
 * @param {Function} require
 * @param {Underscore} _ 
 * @constructor
 * @memberOf __loremIpsumGeneratorDefine
 */
emmet.define('lorem', function(require, _) {
	var langs = {
		en: {
			common: ['lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consectetur', 'adipisicing', 'elit'],
			words: ['exercitationem', 'perferendis', 'perspiciatis', 'laborum', 'eveniet',
				'sunt', 'iure', 'nam', 'nobis', 'eum', 'cum', 'officiis', 'excepturi',
				'odio', 'consectetur', 'quasi', 'aut', 'quisquam', 'vel', 'eligendi',
				'itaque', 'non', 'odit', 'tempore', 'quaerat', 'dignissimos',
				'facilis', 'neque', 'nihil', 'expedita', 'vitae', 'vero', 'ipsum',
				'nisi', 'animi', 'cumque', 'pariatur', 'velit', 'modi', 'natus',
				'iusto', 'eaque', 'sequi', 'illo', 'sed', 'ex', 'et', 'voluptatibus',
				'tempora', 'veritatis', 'ratione', 'assumenda', 'incidunt', 'nostrum',
				'placeat', 'aliquid', 'fuga', 'provident', 'praesentium', 'rem',
				'necessitatibus', 'suscipit', 'adipisci', 'quidem', 'possimus',
				'voluptas', 'debitis', 'sint', 'accusantium', 'unde', 'sapiente',
				'voluptate', 'qui', 'aspernatur', 'laudantium', 'soluta', 'amet',
				'quo', 'aliquam', 'saepe', 'culpa', 'libero', 'ipsa', 'dicta',
				'reiciendis', 'nesciunt', 'doloribus', 'autem', 'impedit', 'minima',
				'maiores', 'repudiandae', 'ipsam', 'obcaecati', 'ullam', 'enim',
				'totam', 'delectus', 'ducimus', 'quis', 'voluptates', 'dolores',
				'molestiae', 'harum', 'dolorem', 'quia', 'voluptatem', 'molestias',
				'magni', 'distinctio', 'omnis', 'illum', 'dolorum', 'voluptatum', 'ea',
				'quas', 'quam', 'corporis', 'quae', 'blanditiis', 'atque', 'deserunt',
				'laboriosam', 'earum', 'consequuntur', 'hic', 'cupiditate',
				'quibusdam', 'accusamus', 'ut', 'rerum', 'error', 'minus', 'eius',
				'ab', 'ad', 'nemo', 'fugit', 'officia', 'at', 'in', 'id', 'quos',
				'reprehenderit', 'numquam', 'iste', 'fugiat', 'sit', 'inventore',
				'beatae', 'repellendus', 'magnam', 'recusandae', 'quod', 'explicabo',
				'doloremque', 'aperiam', 'consequatur', 'asperiores', 'commodi',
				'optio', 'dolor', 'labore', 'temporibus', 'repellat', 'veniam',
				'architecto', 'est', 'esse', 'mollitia', 'nulla', 'a', 'similique',
				'eos', 'alias', 'dolore', 'tenetur', 'deleniti', 'porro', 'facere',
				'maxime', 'corrupti']
		},
		ru: {
			common: ['далеко-далеко', 'за', 'словесными', 'горами', 'в стране', 'гласных', 'и согласных', 'живут', 'рыбные', 'тексты'],
			words: ['вдали', 'от всех', 'они', 'буквенных', 'домах', 'на берегу', 'семантика', 
				'большого', 'языкового', 'океана', 'маленький', 'ручеек', 'даль', 
				'журчит', 'по всей', 'обеспечивает', 'ее','всеми', 'необходимыми', 
				'правилами', 'эта', 'парадигматическая', 'страна', 'которой', 'жаренные', 
				'предложения', 'залетают', 'прямо', 'рот', 'даже', 'всемогущая', 
				'пунктуация', 'не', 'имеет', 'власти', 'над', 'рыбными', 'текстами', 
				'ведущими', 'безорфографичный', 'образ', 'жизни', 'однажды', 'одна', 
				'маленькая', 'строчка','рыбного', 'текста', 'имени', 'lorem', 'ipsum', 
				'решила', 'выйти', 'большой', 'мир', 'грамматики', 'великий', 'оксмокс', 
				'предупреждал', 'о', 'злых', 'запятых', 'диких', 'знаках', 'вопроса', 
				'коварных', 'точках', 'запятой', 'но', 'текст', 'дал', 'сбить', 
				'себя', 'толку', 'он', 'собрал', 'семь', 'своих', 'заглавных', 'букв', 
				'подпоясал', 'инициал', 'за', 'пояс', 'пустился', 'дорогу', 
				'взобравшись', 'первую', 'вершину', 'курсивных', 'гор', 'бросил', 
				'последний', 'взгляд', 'назад', 'силуэт', 'своего', 'родного', 'города', 
				'буквоград', 'заголовок', 'деревни', 'алфавит', 'подзаголовок', 'своего', 
				'переулка', 'грустный', 'реторический', 'вопрос', 'скатился', 'его', 
				'щеке', 'продолжил', 'свой', 'путь', 'дороге', 'встретил', 'рукопись', 
				'она', 'предупредила',  'моей', 'все', 'переписывается', 'несколько', 
				'раз', 'единственное', 'что', 'меня', 'осталось', 'это', 'приставка', 
				'возвращайся', 'ты', 'лучше', 'свою', 'безопасную', 'страну', 'послушавшись', 
				'рукописи', 'наш', 'продолжил', 'свой', 'путь', 'вскоре', 'ему', 
				'повстречался', 'коварный', 'составитель', 'рекламных', 'текстов', 
				'напоивший', 'языком', 'речью', 'заманивший', 'свое', 'агенство', 
				'которое', 'использовало', 'снова', 'снова', 'своих', 'проектах', 
				'если', 'переписали', 'то', 'живет', 'там', 'до', 'сих', 'пор']
		}
	};

	var prefs = require('preferences');
	prefs.define('lorem.defaultLang', 'en');

	/**
	 * @param {AbbreviationNode} tree
	 */
	require('abbreviationParser').addPreprocessor(function(tree) {
		var re = /^(?:lorem|lipsum)([a-z]{2})?(\d*)$/i, match;
		
		/** @param {AbbreviationNode} node */
		tree.findAll(function(node) {
			if (node._name && (match = node._name.match(re))) {
				var wordCound = match[2] || 30;
				var lang = match[1] || prefs.get('lorem.defaultLang') || 'en';
				
				// force node name resolving if node should be repeated
				// or contains attributes. In this case, node should be outputed
				// as tag, otherwise as text-only node
				node._name = '';
				node.data('forceNameResolving', node.isRepeating() || node.attributeList().length);
				node.data('pasteOverwrites', true);
				node.data('paste', function(i) {
					return paragraph(lang, wordCound, !i);
				});
			}
		});
	});
	
	/**
	 * Returns random integer between <code>from</code> and <code>to</code> values
	 * @param {Number} from
	 * @param {Number} to
	 * @returns {Number}
	 */
	function randint(from, to) {
		return Math.round(Math.random() * (to - from) + from);
	}
	
	/**
	 * @param {Array} arr
	 * @param {Number} count
	 * @returns {Array}
	 */
	function sample(arr, count) {
		var len = arr.length;
		var iterations = Math.min(len, count);
		var result = [];
		while (result.length < iterations) {
			var randIx = randint(0, len - 1);
			if (!_.include(result, randIx))
				result.push(randIx);
		}
		
		return _.map(result, function(ix) {
			return arr[ix];
		});
	}
	
	function choice(val) {
		if (_.isString(val))
			return val.charAt(randint(0, val.length - 1));
		
		return val[randint(0, val.length - 1)];
	}
	
	function sentence(words, end) {
		if (words.length) {
			words[0] = words[0].charAt(0).toUpperCase() + words[0].substring(1);
		}
		
		return words.join(' ') + (end || choice('?!...')); // more dots that question marks
	}
	
	/**
	 * Insert commas at randomly selected words. This function modifies values
	 * inside <code>words</code> array 
	 * @param {Array} words
	 */
	function insertCommas(words) {
		var len = words.length;
		var totalCommas = 0;
		
		if (len > 3 && len <= 6) {
			totalCommas = randint(0, 1);
		} else if (len > 6 && len <= 12) {
			totalCommas = randint(0, 2);
		} else {
			totalCommas = randint(1, 4);
		}

		_.each(_.range(totalCommas), function(ix) {
			if (ix < words.length - 1) {
				words[ix] += ',';
			}
		});
	}
	
	/**
	 * Generate a paragraph of "Lorem ipsum" text
	 * @param {Number} wordCount Words count in paragraph
	 * @param {Boolean} startWithCommon Should paragraph start with common 
	 * "lorem ipsum" sentence.
	 * @returns {String}
	 */
	function paragraph(lang, wordCount, startWithCommon) {
		var data = langs[lang];
		if (!data) {
			return '';
		}

		var result = [];
		var totalWords = 0;
		var words;
		
		wordCount = parseInt(wordCount, 10);
		
		if (startWithCommon && data.common) {
			words = data.common.slice(0, wordCount);
			if (words.length > 5)
				words[4] += ',';
			totalWords += words.length;
			result.push(sentence(words, '.'));
		}
		
		while (totalWords < wordCount) {
			words = sample(data.words, Math.min(randint(3, 12) * randint(1, 5), wordCount - totalWords));
			totalWords += words.length;
			insertCommas(words);
			result.push(sentence(words));
		}
		
		return result.join(' ');
	}

	return {
		/**
		 * Adds new language words for Lorem Ipsum generator
		 * @param {String} lang Two-letter lang definition
		 * @param {Object} data Words for language. Maight be either a space-separated 
		 * list of words (String), Array of words or object with <code>text</code> and
		 * <code>common</code> properties
		 */
		addLang: function(lang, data) {
			if (_.isString(data)) {
				data = {words: _.compact(data.split(' '))};
			} else if (_.isArray(data)) {
				data = {words: data};
			}

			langs[lang] = data;
		}
	};
});/**
 * A back-end bootstrap module with commonly used methods for loading user data
 * @param {Function} require
 * @param {Underscore} _  
 */
emmet.define('bootstrap', function(require, _) {
	
	/**
	 * Returns file name part from path
	 * @param {String} path Path to file
	 * @return {String}
	 */
	function getFileName(path) {
		var re = /([\w\.\-]+)$/i;
		var m = re.exec(path);
		return m ? m[1] : '';
	}

	/**
	 * Normalizes profile definition: converts some
	 * properties to valid data types
	 * @param {Object} profile
	 * @return {Object}
	 */
	function normalizeProfile(profile) {
		if (_.isObject(profile)) {
			if ('indent' in profile) {
				profile.indent = !!profile.indent;
			}

			if ('self_closing_tag' in profile) {
				if (_.isNumber(profile.self_closing_tag)) {
					profile.self_closing_tag = !!profile.self_closing_tag;
				}
			}
		}

		return profile;
	}
	
	return {
		/**
		 * Loads Emmet extensions. Extensions are simple .js files that
		 * uses Emmet modules and resources to create new actions, modify
		 * existing ones etc.
		 * @param {Array} fileList List of absolute paths to files in extensions 
		 * folder. Back-end app should not filter this list (e.g. by extension) 
		 * but return it "as-is" so bootstrap can decide how to load contents 
		 * of each file.
		 * This method requires a <code>file</code> module of <code>IEmmetFile</code> 
		 * interface to be implemented.
		 * @memberOf bootstrap
		 */
		loadExtensions: function(fileList) {
			var file = require('file');
			var payload = {};
			var utils = require('utils');
			var userSnippets = null;
			var that = this;
			
			var reader = _.bind(file.readText || file.read, file);
			
			var next = function() {
				if (fileList.length) {
					var f = fileList.shift();
					reader(f, function(err, content) {
						if (err) {
							emmet.log('Unable to read "' + f + '" file: '+ err);
							return next();
						}
												
						switch (file.getExt(f)) {
							case 'js':
								try {
									eval(content);
								} catch (e) {
									emmet.log('Unable to eval "' + f + '" file: '+ e);
								}
								break;
							case 'json':
								var fileName = getFileName(f).toLowerCase().replace(/\.json$/, '');
								if (/^snippets/.test(fileName)) {
									if (fileName === 'snippets') {
										// data in snippets.json is more important to user
										userSnippets = that.parseJSON(content);
									} else {
										payload.snippets = utils.deepMerge(payload.snippets || {}, that.parseJSON(content));
									}
								} else {
									payload[fileName] = content;
								}
								
								break;
						}
						
						next();
					});
				} else {
					// complete
					if (userSnippets) {
						payload.snippets = utils.deepMerge(payload.snippets || {}, userSnippets);
					}
					
					that.loadUserData(payload);
				}
			};
			
			next();
		},
		
		/**
		 * Loads preferences from JSON object (or string representation of JSON)
		 * @param {Object} data
		 * @returns
		 */
		loadPreferences: function(data) {
			require('preferences').load(this.parseJSON(data));
		},
		
		/**
		 * Loads user snippets and abbreviations. It doesn’t replace current
		 * user resource vocabulary but merges it with passed one. If you need 
		 * to <i>replaces</i> user snippets you should call 
		 * <code>resetSnippets()</code> method first
		 */
		loadSnippets: function(data) {
			data = this.parseJSON(data);
			
			var res = require('resources');
			var userData = res.getVocabulary('user') || {};
			res.setVocabulary(require('utils').deepMerge(userData, data), 'user');
		},
		
		/**
		 * Helper function that loads default snippets, defined in project’s
		 * <i>snippets.json</i>
		 * @param {Object} data
		 */
		loadSystemSnippets: function(data) {
			require('resources').setVocabulary(this.parseJSON(data), 'system');
		},
		
		/**
		 * Removes all user-defined snippets
		 */
		resetSnippets: function() {
			require('resources').setVocabulary({}, 'user');
		},
		
		/**
		 * Helper function that loads all user data (snippets and preferences)
		 * defined as a single JSON object. This is useful for loading data 
		 * stored in a common storage, for example <code>NSUserDefaults</code>
		 * @param {Object} data
		 */
		loadUserData: function(data) {
			data = this.parseJSON(data);
			if (data.snippets) {
				this.loadSnippets(data.snippets);
			}
			
			if (data.preferences) {
				this.loadPreferences(data.preferences);
			}
			
			if (data.profiles) {
				this.loadProfiles(data.profiles);
			}
			
			var profiles = data.syntaxProfiles || data.syntaxprofiles;
			if (profiles) {
				this.loadSyntaxProfiles(profiles);
			}
		},
		
		/**
		 * Resets all user-defined data: preferences, snippets etc.
		 * @returns
		 */
		resetUserData: function() {
			this.resetSnippets();
			require('preferences').reset();
			require('profile').reset();
		},
		
		/**
		 * Load syntax-specific output profiles. These are essentially 
		 * an extension to syntax snippets 
		 * @param {Object} profiles Dictionary of profiles
		 */
		loadSyntaxProfiles: function(profiles) {
			profiles = this.parseJSON(profiles);
			var snippets = {};
			_.each(profiles, function(options, syntax) {
				if (!(syntax in snippets)) {
					snippets[syntax] = {};
				}
				snippets[syntax].profile = normalizeProfile(options);
			});
			
			this.loadSnippets(snippets);
		},
		
		/**
		 * Load named profiles
		 * @param {Object} profiles
		 */
		loadProfiles: function(profiles) {
			var profile = require('profile');
			_.each(this.parseJSON(profiles), function(options, name) {
				profile.create(name, normalizeProfile(options));
			});
		},
		
		/**
		 * Dead simple string-to-JSON parser
		 * @param {String} str
		 * @returns {Object}
		 */
		parseJSON: function(str) {
			if (_.isObject(str))
				return str;
			
			try {
				return (new Function('return ' + str))();
			} catch(e) {
				return {};
			}
		}
	};
});