ftp.editplus.com/2015-02-07.ftp.editplus.com.tar/ftp.editplus.com/epp370p1186_1023.exe/[0]/emmet_epp.js

Text File | 2014-04-30 | 386KB | 13,271 lines

//     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, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"').replace(/'/g, ''').replace(/\//g,'/');
  };

  // 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 doesnΓÇÖt 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;

            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 ([e-mail])
 * @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 parentΓÇÿs 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 parentΓÇÿs 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);
            });
        },

        /**
         * 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 parentΓÇÿs 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 ΓÇ£unquotingΓÇ¥ 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;

        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, function(child) {
                            context.addChild(child);
                        });
                    } 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
                    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);
                    });

                    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();
            }
        }
    }

    /**
     * ΓÇ£Un-rollsΓÇ£ 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; i >= 0; i--) {
            child = node.children[i];

            if (child.isRepeating()) {
                j = child.repeatCount;
                child.repeatCount = 1;
                child.updateProperty('counter', 1);
                while (--j > 0) {
                    child.parent.addChild(child.clone(), i + 1)
                        .updateProperty('counter', j + 1);
                }
            }
        }

        // 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);
    });

    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 ΓÇô
                // 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) {
            preprocessor = _.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')) {
                // itΓÇÖs 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 childΓÇÿs 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 ΓÇ£Wrap With AbbreviationΓÇ¥ 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 ΓÇô 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 !== '*') {
            // oops, not a comment, just a /
            conf.charend = conf['char'];
            conf.lineend = conf.line;
            return tokener(token, token, conf);
        }

        while (!(c === "*" && cnext === "/")) {
            token += cnext;
            c = cnext;
            cnext = w.nextChar();
        }
        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 <[e-mail]>
 * 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('');
        },

        /**
         * 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 '$' character in string assuming it might be escaped with '\'
         * @param {String} str String where caracter should be replaced
         * @param {String} value Replace value. Might be a <code>Function</code>
         * @return {String}
         */
        replaceCounter: function(str, value) {
            var symbol = '$';
            // in case we received strings from Java, convert the to native strings
            str = String(str);
            value = String(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++;
                return [str.substring(pos, j), that.zeroPadString(value, j - pos)];
            });
        },

        /**
         * 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;

            // search left
            for (var i = from - 1; i > 0; i--) {
                var ch = text.charAt(i);
                if (ch == '\n' || ch == '\r') {
                    start = i + 1;
                    break;
                }
            }
            // search right
            for (var j = from; j < len; j++) {
                var 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(loc, '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>) ΓÇô 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>ΓÇöif <code>consume</code> is true or
         * not givenΓÇöor a look-ahead that doesn't update the stream positionΓÇöif
         * 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 ([e-mail])
 * @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 {TreeNode} 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, _, zc) {
    var actions = {};

    /**
     * ΓÇ£HumanizesΓÇ¥ 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>) ΓÇô Human-readable action name.
         * May contain '/' symbols as submenu separators<br>
         * <b>hidden</b> : (<code>Boolean</code>) ΓÇô 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
         * @param {String} param
         * @returns {String}
         */
        selfClosing: function(param) {
            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 ([e-mail]) <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 ? String(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 ([e-mail]) <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",
                nextByte = function() {
                    return stream.charCodeAt(pos++);
                };

            if (stream.substr(0, 8) === pngMagicNum) {
                // PNG. Easy peasy.
                var 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 reAttr = /([\w\-:]+)(?:\s*=\s*(?:(?:"((?:\\.|[^"])*)")|(?:'((?:\\.|[^'])*)')|([^>\s]+)))?/g;
                    var startTag = tag.open;
                    var tagAttrs = startTag.range.substring(content).replace(/^<[\w\-\:]+/, '');
//                    var tagAttrs = startTag.full_tag.replace(/^<[\w\-\:]+/, '');
                    var contextNode = {
                        name: startTag.name,
                        attributes: []
                    };

                    // parse attributes
                    var m;
                    while (m = reAttr.exec(tagAttrs)) {
                        contextNode.attributes.push({
                            name: m[1],
                            value: m[2]
                        });
                    }

                    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 doesnΓÇÖt 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':
                    var 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 <style> 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 {
        /**
         * Check if passed abbreviation node has matched snippet resource
         * @param {AbbreviationNode} node
         * @returns {Boolean}
         * @memberOf abbreviationUtils
         */
        isSnippet: function(node) {
            return require('elements').is(node.matchedResource(), 'snippet');
        },

        /**
         * Test if passed node is unary (no closing tag)
         * @param {AbbreviationNode} node
         * @return {Boolean}
         */
        isUnary: function(node) {
            var r = node.matchedResource();
            if (node.children.length || this.isSnippet(node))
                return false;

            return r && r.is_empty || require('tagName').isEmptyElement(node.name());
        },

        /**
         * Test if passed node is inline-level (like <strong>, <img>)
         * @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 ([e-mail])
 * @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 ΓÇ£classicΓÇ¥ 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;

            for (var i = pos; i >= 0; i--) {
                if (open = matcher.open(i)) {
                    // found opening tag
                    if (open.selfClose && open.range.cmp(pos, 'lt', 'gt')) {
                        // inside self-closing tag
                        break;
                    }

                    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 (var 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
                    var j = i + 4, jl = text.length;
                    for (; 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);
                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> ΓÇö replace all default
         * caret placeholders (like <i>{%::emmet-caret::%}</i>) with <i>${0:caret}</i><br>
         *
         * <b>escape</b> : <code>Function</code> ΓÇö function that handle escaped
         * characters (mostly '$'). 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> ΓÇô a tabstop handler. Receives
         * a single argument ΓÇô 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> ΓÇô variable handler. Receives
         * a single argument ΓÇô 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);
                    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 ΓÇô itΓÇÿs a reserved
                // variable name
                if (varName == 'child')
                    return str;

                if (varName == 'cursor')
                    return require('utils').getCaretPlaceholder();

                var attr = node.attribute(varName);
                if (!_.isUndefined(attr))
                    return attr;

                var varValue = res.getVariable(varName);
                if (varValue)
                    return varValue;

                // output as placeholder
                if (!placeholderMemo[varName])
                    placeholderMemo[varName] = startPlaceholderNum++;

                return '${' + placeholderMemo[varName] + ':' + varName + '}';
            };
        },

        resetPlaceholderCounter: function() {
            console.log('deprecated');
            startPlaceholderNum = 100;
        },

        /**
         * 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
                            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 = _.map(val.split(','), require('utils').trim);
                if (!val.length)
                    val = 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 ([e-mail]) <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 ΓÇ£name-valueΓÇ¥ 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 itΓÇôall 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 ΓÇö 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(tok) {
            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, weΓÇÿll 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;
            }
        }
    };
});/**
 * 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 nameΓÇÖs element separator.');
    prefs.define('bem.modifierSeparator', '_', 'Class nameΓÇÖs modifier separator.');
    prefs.define('bem.shortElementPrefix', '-',
            'Symbol for describing short ΓÇ£block-elementΓÇ¥ notation. Class names '
            + 'prefixed with this symbol will be treated as element name for parentΓÇÿs '
            + '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, p1) {
                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 'ΓÇô') is also treated as an element
     * level lookup, e.g. ____el will search for element definition in parentΓÇÖs
     * 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 ([e-mail])
 * @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> ΓÇô 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> ΓÇô current node (instance of <code>AbbreviationNode</code>)</li>'

            + '<li><code>name</code> ΓÇô name of current tag</li>'

            + '<li><code>padding</code> ΓÇô 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 ([e-mail])
 * @link http://chikuyonok.ru
 */
emmet.exec(function(require, _) {
    var charMap = {
        '<': '<',
        '>': '>',
        '&': '&'
    };

    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 ([e-mail])
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __formatFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _){
    var placeholder = '%s';

    function getIndentation() {
        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
     * @param {Number} level Depth level
     */
    function processSnippet(item, profile, level) {
        item.start = item.end = '';
        if (!isVeryFirstChild(item) && profile.tag_nl !== false && shouldAddLineBreak(item, profile)) {
            // check if weΓÇÖre 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
     * @param {Number} level Depth level
     */
    function processTag(item, profile, level) {
        item.start = item.end = placeholder;
        var utils = require('utils');
        var abbrUtils = require('abbreviationUtils');
        var isUnary = abbrUtils.isUnary(item);
        var nl = utils.getNewline();

        // formatting output
        if (profile.tag_nl !== false) {
            var forceNl = profile.tag_nl === true && (profile.tag_nl_leaf || item.children.length);

            // 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 + getIndentation();
                } 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 = getIndentation() ;
            }
        }

        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 ([e-mail])
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __hamlFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
    var childToken = '${child}';

    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;
    }

    /**
     * Test if passed node has block-level sibling element
     * @param {AbbreviationNode} item
     * @return {Boolean}
     */
    function hasBlockSibling(item) {
        return item.parent && item.parent.hasBlockChildren();
    }

    /**
     * Processes element with <code>tag</code> type
     * @param {AbbreviationNode} item
     * @param {OutputProfile} profile
     * @param {Number} level Depth level
     */
    function processTag(item, profile, level) {
        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 ([e-mail])
 * @link http://chikuyonok.ru
 * @constructor
 * @memberOf __htmlFilterDefine
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
    /**
     * 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
     * @param {Number} level Depth level
     */
    function processTag(item, profile, level) {
        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 = '';

        // 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);

        if (!item.children.length && !isUnary && item.content.indexOf(cursor) == -1)
            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 ([e-mail])
 * @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, profile, level) {
        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 ([e-mail])
 * @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 ([e-mail])
 * @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;
    });
});/**
 * '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);

        // normalize incoming arguments
        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) {
            var content = emmet.expandAbbreviation(abbr, syntax, profile,
                    require('actionUtils').captureContext(editor));
            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, options);
        },

        /**
         * 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 itemΓÇöHTML tag or CSS selectorΓÇöwhen 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 thereΓÇÖs 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 ΓÇö search left, 1 ΓÇö 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:
        // ΓÇô 1px solid red: 3 parts
        // ΓÇô arial, sans-serif: enumeration, 2 parts
        // ΓÇô 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
        while (property = _.find(list, searchFn)) {
            possibleRanges = makePossibleRangesCSS(property);
            if (isBackward)
                possibleRanges.reverse();

            // check if any possible range is already selected
            curRange = _.find(possibleRanges, function(r) {
                return r.equal(selRange);
            });

            if (!curRange) {
                // no selection, select nearest item
                var matchedRanges = _.filter(possibleRanges, function(r) {
                    return r.inside(selRange.end);
                });

                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>
 * <div></div> → <div /> : join<br>
 * <div /> → <div></div> : 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]) / 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, options);
        }
    };
});/**
 * 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
 * <textarea>, 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 preferenceΓÇÖs value will be automatically inserted before '
            + 'closing brace when user adds newline in newly created CSS rule '
            + '(e.g. when ΓÇ£Insert formatted linebreakΓÇ¥ action will be performed '
            + 'in CSS file). If youΓÇÖre 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();

        if (_.include(['html', 'xml', 'xsl'], info.syntax)) {
            var 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');
                var 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';
        }

        var b64 = require('base64').encode(String(file.read(realImgPath)));
        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 <img> element or
 * CSS rule
 * @param {Function} require
 * @param {Underscore} _
 * @constructor
 * @memberOf __updateImageSizeAction
 */
emmet.exec(function(require, _) {
    /**
     * Updates image size of <img src=""> 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') {

            var size = getImageSizeForSource(editor, xmlElem.value('src'));
            if (size) {
                var compoundData = xmlElem.range(true);
                xmlElem.value('width', size.width);
                xmlElem.value('height', size.height, xmlElem.indexOf('width') + 1);

                return _.extend(compoundData, {
                    data: xmlElem.toString(),
                    caret: offset
                });
            }
        }

        return null;
    }

    /**
     * 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() || ''))) {
                var size = getImageSizeForSource(editor, m[2]);
                if (size) {
                    var compoundData = cssRule.range(true);
                    cssRule.value('width', size.width + 'px');
                    cssRule.value('height', size.height + 'px', cssRule.indexOf('width') + 1);

                    return _.extend(compoundData, {
                        data: cssRule.toString(),
                        caret: offset
                    });
                }
            }
        }

        return null;
    }

    /**
     * Returns image dimensions for source
     * @param {IEmmetEditor} editor
     * @param {String} src Image source (path or data:url)
     */
    function getImageSizeForSource(editor, src) {
        var fileContent;
        if (src) {
            // check if it is data:url
            if (/^data:/.test(src)) {
                fileContent = require('base64').decode( src.replace(/^data\:.+?;.+?,/, '') );
            } else {
                var file = require('file');
                var absPath = file.locateFile(editor.getFilePath(), src);
                if (absPath === null) {
                    throw "Can't find " + src + ' file';
                }

                fileContent = String(file.read(absPath));
            }

            return require('actionUtils').getImageSize(fileContent);
        }
    }

    require('actions').add('update_image_size', function(editor) {
        var result;
        // this action will definitely wonΓÇÖt work in SASS dialect,
        // but may work in SCSS or LESS
        if (_.include(['css', 'less', 'scss'], String(editor.getSyntax()))) {
            result = updateImageSizeCSS(editor);
        } else {
            result = updateImageSizeHTML(editor);
        }

        return require('actionUtils').compoundUpdate(editor, result);
    });
});/**
 * "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> ΓÇô generates 30 words text.<br>
 * <code>lipsum*6</code> ΓÇô generates 6 paragraphs (autowrapped with <p> element) of text.<br>
 * <code>ol>lipsum10*5</code> ΓÇö generates ordered list with 5 list items (autowrapped with <li> tag)
 * with text of 10 words on each line<br>
 * <code>span*3>lipsum20</code> ΓÇô generates 3 paragraphs of 20-words text, each wrapped with <span> element .
 * Each paragraph phrase is unique
 * @param {Function} require
 * @param {Underscore} _
 * @constructor
 * @memberOf __loremIpsumGeneratorDefine
 */
emmet.exec(function(require, _) {
    /**
     * @param {AbbreviationNode} tree
     * @param {Object} options
     */
    require('abbreviationParser').addPreprocessor(function(tree, options) {
        var re = /^(?:lorem|lipsum)(\d*)$/i, match;

        /** @param {AbbreviationNode} node */
        tree.findAll(function(node) {
            if (node._name && (match = node._name.match(re))) {
                var wordCound = match[1] || 30;

                // 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, content) {
                    return paragraph(wordCound, !i);
                });
            }
        });
    });

    var COMMON_P = 'lorem ipsum dolor sit amet consectetur adipisicing elit'.split(' ');

    var 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'];

    /**
     * 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(sample(_.range(totalCommas)), function(ix) {
            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(wordCount, startWithCommon) {
        var result = [];
        var totalWords = 0;
        var words;

        wordCount = parseInt(wordCount, 10);

        if (startWithCommon) {
            words = COMMON_P.slice(0, wordCount);
            if (words.length > 5)
                words[4] += ',';
            totalWords += words.length;
            result.push(sentence(words, '.'));
        }

        while (totalWords < wordCount) {
            words = sample(WORDS, Math.min(randint(3, 12) * randint(1, 5), wordCount - totalWords));
            totalWords += words.length;
            insertCommas(words);
            result.push(sentence(words));
        }

        return result.join(' ');
    }
});/**
 * 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><foo></foo></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 donΓÇÖt '
            + '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 ΓÇïΓÇïmust 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',
            '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.');


    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';
        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));
    }

    /**
     * Split snippet into a CSS property-value pair
     * @param {String} snippet
     */
    function splitSnippet(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')
        };
    }

    /**
     * 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);
    }

    /**
     * Helper function that parses comma-separated list of elements into array
     * @param {String} list
     * @returns {Array}
     */
    function parseList(list) {
        var result = _.map((list || '').split(','), require('utils').trim);
        return result.length ? result : null;
    }

    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(/^[0-9a-f]+/, 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;
            if (isImportant = /^(.+)\!$/.test(abbr)) {
                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);

            snippet = resources.findSnippet(syntax, abbrData.property);

            // fallback to some old snippets like m:a
//            if (!snippet && ~abbrData.property.indexOf(':')) {
//                var parts = abbrData.property.split(':');
//                var propertyName = parts.shift();
//                snippet = resources.findSnippet(syntax, propertyName) || propertyName;
//                abbrData.values = this.parseValues(parts.join(':'));
//            }

            if (!snippet && prefs.get('css.fuzzySearch')) {
                // letΓÇÖs 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 = 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;

            _.each(prefixes, function(p) {
                if (p in vendorPrefixes) {
                    result.push(transformSnippet(
                            vendorPrefixes[p].transformName(snippetObj.name)
                            + ':' + snippetObj.value,
                            isImportant, syntax));

                }
            });

            // put the original property
            result.push(transformSnippet(snippetObj.name + ':' + snippetObj.value, isImportant, syntax));

            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);
        },

        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;
    }

    /**
     * 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 canΓÇÖt 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 = _.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');

        // 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())) {
                rule.remove(item);
            }
        });

        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());

        // 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);
            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 semicolonΓÇôtry 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(';');

                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(node, syntax) {
        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(','),
        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 parentΓÇôchild 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];
        }
    };
});/**
 * 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] : '';
    }

    /**
     * Returns base path (path to folder of file)
     * @param {String} path Path to file
     * @return {String}
     */
    function getBasePath(path) {
        return path.substring(0, path.length - getFileName(path).length);
    }

    /**
     * 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;

            _.each(fileList, function(f) {
                switch (file.getExt(f)) {
                    case 'js':
                        try {
                            eval(file.read(f));
                        } 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 = this.parseJSON(file.read(f));
                            } else {
                                payload.snippets = utils.deepMerge(payload.snippets || {}, this.parseJSON(file.read(f)));
                            }
                        } else {
                            payload[fileName] = file.read(f);
                        }

                        break;
                }
            }, this);

            if (userSnippets) {
                payload.snippets = utils.deepMerge(payload.snippets || {}, userSnippets);
            }

            this.loadUserData(payload);
        },

        /**
         * 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 doesnΓÇÖt 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 projectΓÇÖs
         * <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 {};
            }
        }
    };
});/**
 * Implementation of @{link IEmmetFile} interface
 * See `javascript/interfaces/IEmmetFile.js`
 * @param {Function} require
 * @param {Underscore} _
 * @constructor
 */
emmet.define('file', function(require, _) {
    var backward = {
        'C7': '80',
        'FC': '81',
        'E9': '82',
        'E2': '83',
        'E4': '84',
        'E0': '85',
        'E5': '86',
        'E7': '87',
        'EA': '88',
        'EB': '89',
        'E8': '8A',
        'EF': '8B',
        'EE': '8C',
        'EC': '8D',
        'C4': '8E',
        'C5': '8F',
        'C9': '90',
        'E6': '91',
        'C6': '92',
        'F4': '93',
        'F6': '94',
        'F2': '95',
        'FB': '96',
        'F9': '97',
        'FF': '98',
        'D6': '99',
        'DC': '9A',
        'A2': '9B',
        'A3': '9C',
        'A5': '9D',
        '20A7': '9E',
        '192': '9F',
        'E1': 'A0',
        'ED': 'A1',
        'F3': 'A2',
        'FA': 'A3',
        'F1': 'A4',
        'D1': 'A5',
        'AA': 'A6',
        'BA': 'A7',
        'BF': 'A8',
        '2310': 'A9',
        'AC': 'AA',
        'BD': 'AB',
        'BC': 'AC',
        'A1': 'AD',
        'AB': 'AE',
        'BB': 'AF',
        '2591': 'B0',
        '2592': 'B1',
        '2593': 'B2',
        '2502': 'B3',
        '2524': 'B4',
        '2561': 'B5',
        '2562': 'B6',
        '2556': 'B7',
        '2555': 'B8',
        '2563': 'B9',
        '2551': 'BA',
        '2557': 'BB',
        '255D': 'BC',
        '255C': 'BD',
        '255B': 'BE',
        '2510': 'BF',
        '2514': 'C0',
        '2534': 'C1',
        '252C': 'C2',
        '251C': 'C3',
        '2500': 'C4',
        '253C': 'C5',
        '255E': 'C6',
        '255F': 'C7',
        '255A': 'C8',
        '2554': 'C9',
        '2569': 'CA',
        '2566': 'CB',
        '2560': 'CC',
        '2550': 'CD',
        '256C': 'CE',
        '2567': 'CF',
        '2568': 'D0',
        '2564': 'D1',
        '2565': 'D2',
        '2559': 'D3',
        '2558': 'D4',
        '2552': 'D5',
        '2553': 'D6',
        '256B': 'D7',
        '256A': 'D8',
        '2518': 'D9',
        '250C': 'DA',
        '2588': 'DB',
        '2584': 'DC',
        '258C': 'DD',
        '2590': 'DE',
        '2580': 'DF',
        '3B1': 'E0',
        'DF': 'E1',
        '393': 'E2',
        '3C0': 'E3',
        '3A3': 'E4',
        '3C3': 'E5',
        'B5': 'E6',
        '3C4': 'E7',
        '3A6': 'E8',
        '398': 'E9',
        '3A9': 'EA',
        '3B4': 'EB',
        '221E': 'EC',
        '3C6': 'ED',
        '3B5': 'EE',
        '2229': 'EF',
        '2261': 'F0',
        'B1': 'F1',
        '2265': 'F2',
        '2264': 'F3',
        '2320': 'F4',
        '2321': 'F5',
        'F7': 'F6',
        '2248': 'F7',
        'B0': 'F8',
        '2219': 'F9',
        'B7': 'FA',
        '221A': 'FB',
        '207F': 'FC',
        'B2': 'FD',
        '25A0': 'FE',
        'A0': 'FF'
    };

    var hD = "0123456789ABCDEF";

    function d2h(d) {
        var h = hD.substr(d & 15, 1);
        while (d > 15) {
            d >>>= 4;
            h = hD.substr(d & 15, 1) + h;
        }

        return h;
    }

    function h2d(h) {
        return parseInt(h, 16);
    }

    function _readFile(path) {
        var bs = new ActiveXObject("ADODB.Stream");
        bs.Type = 2;
        bs.CharSet = '437';
        bs.Open();
        bs.LoadFromFile(path);

        var what = bs.ReadText;
        bs.Close();
        return what;
    }

    return {
        read: function(path) {
            var content = _readFile(path);

            // encode result
            var encArray = [];
            for (var i = 0, sL = content.length; i < sL; i++) {
                var cc = content.charCodeAt(i);
                if (cc >= 128) {
                    cc = h2d(backward['' + d2h(cc)]);
                }
                encArray.push(String.fromCharCode(cc));
            }

            return encArray.join('') || '';
        },

        locateFile: function(baseFile, fileName) {
            var fso = new ActiveXObject("Scripting.FileSystemObject");
            var parent = baseFile, tmp;

            while (parent = fso.GetParentFolderName(parent)) {
                tmp = this.createPath(parent, fileName);
                if (fso.FileExists(tmp)) {
                    return fso.GetAbsolutePathName(tmp);
                }
            }

            return '';
        },

        createPath: function(parent, fileName) {
            var fso = new ActiveXObject("Scripting.FileSystemObject");
            return fso.BuildPath(parent, fileName);
        },

        save: function(file, content) {
            var fso = new ActiveXObject("Scripting.FileSystemObject");
            var f = null;

            try {
                f = fso.OpenTextFile(file, 2, true, 0);
                f.Write(content);
            } catch(e){
                debug(e);
            }

            if (f)
                f.Close();
        },

        getExt: function(file) {
            var m = (file || '').match(/\.([\w\-]+)$/);
            return m ? m[1].toLowerCase() : '';
        }
    };
});/**
 * @param {Function} require
 * @param {Underscore} _
 * @constructor
 */
emmet.define('editorProxy', function(require, _) {
    function getView() {
        var view = epp.currentView;
        var res = require('resources');
        var utils = require('utils');

        var indentation = res.getVariable('indentation');
        if (view.useTabs) {
            indentation = '\t';
        } else {
            indentation = utils.repeatString(' ', view.tabSize);
        }

        res.setVariable('indentation', indentation);
        utils.setNewline('\r\n');

        return view;
    }

    return {
        /** @memberOf editorProxy */
        getSelectionRange: function() {
            var view = getView();
            return {
                start: view.anchor,
                end: view.pos
            };
        },

        createSelection: function(start, end) {
            getView().setSel(start, end);
        },

        getCurrentLineRange: function() {
            var view = getView();
            var lineNumber = view.lineNumber;
            var lineStart = view.lineIndex(lineNumber);
            var lineEnd = lineStart + view.lineLength(lineNumber);

            return {
                start: lineStart,
                end: lineEnd
            };
        },

        getCaretPos: function() {
            return getView().pos;
        },

        setCaretPos: function(pos) {
            this.createSelection(pos, pos);
        },

        getCurrentLine: function() {
            return getView().line;
        },

        replaceContent: function(value, start, end, noIndent) {
            if (_.isUndefined(end))
                end = _.isUndefined(start) ? content.length : start;
            if (_.isUndefined(start)) start = 0;
            var utils = require('utils');

            // indent new value
            if (!noIndent) {
                value = utils.padString(value, utils.getLinePadding(this.getCurrentLine()));
            }

            // find new caret position
            var tabstopData = require('tabStops').extract(value, {
                escape: function(ch) {
                    return ch;
                }
            });
            value = tabstopData.text;
            var firstTabStop = tabstopData.tabstops[0];

            if (firstTabStop) {
                firstTabStop.start += start;
                firstTabStop.end += start;
            } else {
                firstTabStop = {
                    start: value.length + start,
                    end: value.length + start
                };
            }

            // insert new text
            this.createSelection(start, end);
            getView().replaceSel(value, 1);
            this.createSelection(firstTabStop.start, firstTabStop.end);
        },

        getContent: function(){
            return getView().text || '';
        },

        getSyntax: function() {
            var view = getView();
            var syntax = (view.syntaxScope || '').toLowerCase();

            if (syntax == 'xml' && /\.xslt?(\.|$)/i.test(this.getFilePath()))
                syntax = 'xsl';

            return require('actionUtils').detectSyntax(this, syntax);
        },

        getProfileName: function() {
            return require('actionUtils').detectProfile(this);
        },

        prompt: function(title, value) {
            //var ie = new ActiveXObject("InternetExplorer.Application");
            //ie.navigate('about:blank');
            //ie.Visible = 0;

            //while (ie.Busy) {}
            //var obj = ie.Document.Script;
            //var input = obj.prompt(title, value || '');
            //ie.Quit();
            //return input;
            return getView().prompt(title);
        },

        getSelection: function() {
            return getView().selection || '';
        },

        getFilePath: function() {
            return getView().file;
        }
    };
});/**
 * @constructor
 * @param {Function} require
 * @param {Underscore} _
 */
emmet.exec(function(require, _) {
    var file = require('file');

    // path to Emmet extensions and user's custom snippets
    var extensionsDir = file.createPath(epp.stxDir, 'emmet-extensions');

    var bootstrap = require('bootstrap');

    // load snippets
    bootstrap.loadSystemSnippets(file.read(file.createPath(epp.stxDir, 'snippets.json')));

    // load extensions
    var fso = new ActiveXObject("Scripting.FileSystemObject");
    if (fso.FolderExists(extensionsDir)) {
        var fileList = [];
        var extensionFiles = fso.GetFolder(extensionsDir).Files;

        var fileEnum = new Enumerator(extensionFiles);
        for (; !fileEnum.atEnd(); fileEnum.moveNext()) {
            fileList.push(fileEnum.item().Path);
        }

        bootstrap.loadExtensions(fileList);
    }

    //function addMenuItems(menu, items) {
        //_.each(items, function(item) {
            //if (item.type == 'action') {
                //var cfg = {
                    //text: item.label,
                    //cmd: function() {
                        //return require('actions').run(item.name, require('editorProxy'));
                    //}
                //};

                //if (item.name in keymap) {
                    //System.addHotkey(setupHotkey(cfg, keymap[item.name]));
                    //cfg.text += '\t' + keymap[item.name];
                //}

                //menu.addItem(cfg);

            //} else if (item.type == 'submenu') {
                //var submenu = menu.addMenu(item.name);
                //addMenuItems(submenu, item.items);
            //}
        //});
    //}

    //// create menu items
    //var rootMenu = Editor.addMenu("Emmet");
    //addMenuItems(rootMenu, require('actions').getMenu());
});

var zen_controller = {
    runAction: function(action_name) {
        emmet.require('actions').run(action_name, emmet.require('editorProxy'));
    },

    hasSyntax: function() {
        var view = epp.currentView;
        var syntax = (view.syntaxScope || '').toLowerCase();
        return emmet.require('resources').hasSyntax(syntax);
    }
}