Implement CSS `display: flow-root` (modern clearfix)
[WebKit-https.git] / Source / WebInspectorUI / UserInterface / External / CodeMirror / css.js
index 77545df..c4ee448 100644 (file)
-CodeMirror.defineMode("css", function(config, parserConfig) {
-  "use strict";
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
 
+CodeMirror.defineMode("css", function(config, parserConfig) {
+  var inline = parserConfig.inline
   if (!parserConfig.propertyKeywords) parserConfig = CodeMirror.resolveMode("text/css");
 
-  var indentUnit = config.indentUnit || config.tabSize || 2,
-      hooks = parserConfig.hooks || {},
-      atMediaTypes = parserConfig.atMediaTypes || {},
-      atMediaFeatures = parserConfig.atMediaFeatures || {},
+  var indentUnit = config.indentUnit,
+      tokenHooks = parserConfig.tokenHooks,
+      documentTypes = parserConfig.documentTypes || {},
+      mediaTypes = parserConfig.mediaTypes || {},
+      mediaFeatures = parserConfig.mediaFeatures || {},
+      mediaValueKeywords = parserConfig.mediaValueKeywords || {},
       propertyKeywords = parserConfig.propertyKeywords || {},
+      nonStandardPropertyKeywords = parserConfig.nonStandardPropertyKeywords || {},
+      fontProperties = parserConfig.fontProperties || {},
+      counterDescriptors = parserConfig.counterDescriptors || {},
       colorKeywords = parserConfig.colorKeywords || {},
       valueKeywords = parserConfig.valueKeywords || {},
-      allowNested = !!parserConfig.allowNested,
-      type = null;
+      allowNested = parserConfig.allowNested,
+      supportsAtComponent = parserConfig.supportsAtComponent === true;
 
+  var type, override;
   function ret(style, tp) { type = tp; return style; }
 
+  // Tokenizers
+
   function tokenBase(stream, state) {
     var ch = stream.next();
-    if (hooks[ch]) {
-      // result[0] is style and result[1] is type
-      var result = hooks[ch](stream, state);
+    if (tokenHooks[ch]) {
+      var result = tokenHooks[ch](stream, state);
       if (result !== false) return result;
     }
-    if (ch == "@") {stream.eatWhile(/[\w\\\-]/); return ret("def", stream.current());}
-    else if (ch == "=") ret(null, "compare");
-    else if ((ch == "~" || ch == "|") && stream.eat("=")) return ret(null, "compare");
-    else if (ch == "\"" || ch == "'") {
+    if (ch == "@") {
+      stream.eatWhile(/[\w\\\-]/);
+      return ret("def", stream.current());
+    } else if (ch == "=" || (ch == "~" || ch == "|") && stream.eat("=")) {
+      return ret(null, "compare");
+    } else if (ch == "\"" || ch == "'") {
       state.tokenize = tokenString(ch);
       return state.tokenize(stream, state);
-    }
-    else if (ch == "#") {
+    } else if (ch == "#") {
       stream.eatWhile(/[\w\\\-]/);
       return ret("atom", "hash");
-    }
-    else if (ch == "!") {
+    } else if (ch == "!") {
       stream.match(/^\s*\w*/);
       return ret("keyword", "important");
-    }
-    else if (/\d/.test(ch) || ch == "." && stream.eat(/\d/)) {
+    } else if (/\d/.test(ch) || ch == "." && stream.eat(/\d/)) {
       stream.eatWhile(/[\w.%]/);
       return ret("number", "unit");
-    }
-    else if (ch === "-") {
-      if (/\d/.test(stream.peek())) {
+    } else if (ch === "-") {
+      if (/[\d.]/.test(stream.peek())) {
         stream.eatWhile(/[\w.%]/);
         return ret("number", "unit");
-      } else if (stream.match(/^[^-]+-/)) {
+      } else if (stream.match(/^-[\w\\\-]+/)) {
+        stream.eatWhile(/[\w\\\-]/);
+        if (stream.match(/^\s*:/, false))
+          return ret("variable-2", "variable-definition");
+        return ret("variable-2", "variable");
+      } else if (stream.match(/^\w+-/)) {
         return ret("meta", "meta");
       }
-    }
-    else if (/[,+>*\/]/.test(ch)) {
+    } else if (/[,+>*\/]/.test(ch)) {
       return ret(null, "select-op");
-    }
-    else if (ch == "." && stream.match(/^-?[_a-z][_a-z0-9-]*/i)) {
+    } else if (ch == "." && stream.match(/^-?[_a-z][_a-z0-9-]*/i)) {
       return ret("qualifier", "qualifier");
-    }
-    else if (ch == ":") {
-      return ret("operator", ch);
-    }
-    else if (/[;{}\[\]\(\)]/.test(ch)) {
+    } else if (/[:;{}\[\]\(\)]/.test(ch)) {
       return ret(null, ch);
-    }
-    else if (ch == "u" && stream.match("rl(")) {
+    } else if ((ch == "u" && stream.match(/rl(-prefix)?\(/)) ||
+               (ch == "d" && stream.match("omain(")) ||
+               (ch == "r" && stream.match("egexp("))) {
       stream.backUp(1);
       state.tokenize = tokenParenthesized;
-      return ret("property", "variable");
-    }
-    else {
+      return ret("property", "word");
+    } else if (/[\w\\\-]/.test(ch)) {
       stream.eatWhile(/[\w\\\-]/);
-      return ret("property", "variable");
+      return ret("property", "word");
+    } else {
+      return ret(null, null);
     }
   }
 
-  function tokenString(quote, nonInclusive) {
+  function tokenString(quote) {
     return function(stream, state) {
       var escaped = false, ch;
       while ((ch = stream.next()) != null) {
-        if (ch == quote && !escaped)
+        if (ch == quote && !escaped) {
+          if (quote == ")") stream.backUp(1);
           break;
+        }
         escaped = !escaped && ch == "\\";
       }
-      if (!escaped) {
-        if (nonInclusive) stream.backUp(1);
-        state.tokenize = tokenBase;
-      }
+      if (ch == quote || !escaped && quote != ")") state.tokenize = null;
       return ret("string", "string");
     };
   }
 
   function tokenParenthesized(stream, state) {
     stream.next(); // Must be '('
-    if (!stream.match(/\s*[\"\']/, false))
-      state.tokenize = tokenString(")", true);
+    if (!stream.match(/\s*[\"\')]/, false))
+      state.tokenize = tokenString(")");
     else
-      state.tokenize = tokenBase;
+      state.tokenize = null;
     return ret(null, "(");
   }
 
+  // Context management
+
+  function Context(type, indent, prev) {
+    this.type = type;
+    this.indent = indent;
+    this.prev = prev;
+  }
+
+  function pushContext(state, stream, type, indent) {
+    state.context = new Context(type, stream.indentation() + (indent === false ? 0 : indentUnit), state.context);
+    return type;
+  }
+
+  function popContext(state) {
+    if (state.context.prev)
+      state.context = state.context.prev;
+    return state.context.type;
+  }
+
+  function pass(type, stream, state) {
+    return states[state.context.type](type, stream, state);
+  }
+  function popAndPass(type, stream, state, n) {
+    for (var i = n || 1; i > 0; i--)
+      state.context = state.context.prev;
+    return pass(type, stream, state);
+  }
+
+  // Parser
+
+  function wordAsValue(stream) {
+    var word = stream.current().toLowerCase();
+    if (valueKeywords.hasOwnProperty(word))
+      override = "atom";
+    else if (colorKeywords.hasOwnProperty(word))
+      override = "keyword";
+    else
+      override = "variable";
+  }
+
+  var states = {};
+
+  states.top = function(type, stream, state) {
+    if (type == "{") {
+      return pushContext(state, stream, "block");
+    } else if (type == "}" && state.context.prev) {
+      return popContext(state);
+    } else if (supportsAtComponent && /@component/.test(type)) {
+      return pushContext(state, stream, "atComponentBlock");
+    } else if (/^@(-moz-)?document$/.test(type)) {
+      return pushContext(state, stream, "documentTypes");
+    } else if (/^@(media|supports|(-moz-)?document|import)$/.test(type)) {
+      return pushContext(state, stream, "atBlock");
+    } else if (/^@(font-face|counter-style)/.test(type)) {
+      state.stateArg = type;
+      return "restricted_atBlock_before";
+    } else if (/^@(-(moz|ms|o|webkit)-)?keyframes$/.test(type)) {
+      return "keyframes";
+    } else if (type && type.charAt(0) == "@") {
+      return pushContext(state, stream, "at");
+    } else if (type == "hash") {
+      override = "builtin";
+    } else if (type == "word") {
+      override = "tag";
+    } else if (type == "variable-definition") {
+      return "maybeprop";
+    } else if (type == "interpolation") {
+      return pushContext(state, stream, "interpolation");
+    } else if (type == ":") {
+      return "pseudo";
+    } else if (allowNested && type == "(") {
+      return pushContext(state, stream, "parens");
+    }
+    return state.context.type;
+  };
+
+  states.block = function(type, stream, state) {
+    if (type == "word") {
+      var word = stream.current().toLowerCase();
+      if (propertyKeywords.hasOwnProperty(word)) {
+        override = "property";
+        return "maybeprop";
+      } else if (nonStandardPropertyKeywords.hasOwnProperty(word)) {
+        override = "string-2";
+        return "maybeprop";
+      } else if (allowNested) {
+        override = stream.match(/^\s*:(?:\s|$)/, false) ? "property" : "tag";
+        return "block";
+      } else {
+        override += " error";
+        return "maybeprop";
+      }
+    } else if (type == "meta") {
+      return "block";
+    } else if (!allowNested && (type == "hash" || type == "qualifier")) {
+      override = "error";
+      return "block";
+    } else {
+      return states.top(type, stream, state);
+    }
+  };
+
+  states.maybeprop = function(type, stream, state) {
+    if (type == ":") return pushContext(state, stream, "prop");
+    return pass(type, stream, state);
+  };
+
+  states.prop = function(type, stream, state) {
+    if (type == ";") return popContext(state);
+    if (type == "{" && allowNested) return pushContext(state, stream, "propBlock");
+    if (type == "}" || type == "{") return popAndPass(type, stream, state);
+    if (type == "(") return pushContext(state, stream, "parens");
+
+    if (type == "hash" && !/^#([0-9a-fA-f]{3,4}|[0-9a-fA-f]{6}|[0-9a-fA-f]{8})$/.test(stream.current())) {
+      override += " error";
+    } else if (type == "word") {
+      wordAsValue(stream);
+    } else if (type == "interpolation") {
+      return pushContext(state, stream, "interpolation");
+    }
+    return "prop";
+  };
+
+  states.propBlock = function(type, _stream, state) {
+    if (type == "}") return popContext(state);
+    if (type == "word") { override = "property"; return "maybeprop"; }
+    return state.context.type;
+  };
+
+  states.parens = function(type, stream, state) {
+    if (type == "{" || type == "}") return popAndPass(type, stream, state);
+    if (type == ")") return popContext(state);
+    if (type == "(") return pushContext(state, stream, "parens");
+    if (type == "interpolation") return pushContext(state, stream, "interpolation");
+    if (type == "word") wordAsValue(stream);
+    return "parens";
+  };
+
+  states.pseudo = function(type, stream, state) {
+    if (type == "word") {
+      override = "variable-3";
+      return state.context.type;
+    }
+    return pass(type, stream, state);
+  };
+
+  states.documentTypes = function(type, stream, state) {
+    if (type == "word" && documentTypes.hasOwnProperty(stream.current())) {
+      override = "tag";
+      return state.context.type;
+    } else {
+      return states.atBlock(type, stream, state);
+    }
+  };
+
+  states.atBlock = function(type, stream, state) {
+    if (type == "(") return pushContext(state, stream, "atBlock_parens");
+    if (type == "}" || type == ";") return popAndPass(type, stream, state);
+    if (type == "{") return popContext(state) && pushContext(state, stream, allowNested ? "block" : "top");
+
+    if (type == "interpolation") return pushContext(state, stream, "interpolation");
+
+    if (type == "word") {
+      var word = stream.current().toLowerCase();
+      if (word == "only" || word == "not" || word == "and" || word == "or")
+        override = "keyword";
+      else if (mediaTypes.hasOwnProperty(word))
+        override = "attribute";
+      else if (mediaFeatures.hasOwnProperty(word))
+        override = "property";
+      else if (mediaValueKeywords.hasOwnProperty(word))
+        override = "keyword";
+      else if (propertyKeywords.hasOwnProperty(word))
+        override = "property";
+      else if (nonStandardPropertyKeywords.hasOwnProperty(word))
+        override = "string-2";
+      else if (valueKeywords.hasOwnProperty(word))
+        override = "atom";
+      else if (colorKeywords.hasOwnProperty(word))
+        override = "keyword";
+      else
+        override = "error";
+    }
+    return state.context.type;
+  };
+
+  states.atComponentBlock = function(type, stream, state) {
+    if (type == "}")
+      return popAndPass(type, stream, state);
+    if (type == "{")
+      return popContext(state) && pushContext(state, stream, allowNested ? "block" : "top", false);
+    if (type == "word")
+      override = "error";
+    return state.context.type;
+  };
+
+  states.atBlock_parens = function(type, stream, state) {
+    if (type == ")") return popContext(state);
+    if (type == "{" || type == "}") return popAndPass(type, stream, state, 2);
+    return states.atBlock(type, stream, state);
+  };
+
+  states.restricted_atBlock_before = function(type, stream, state) {
+    if (type == "{")
+      return pushContext(state, stream, "restricted_atBlock");
+    if (type == "word" && state.stateArg == "@counter-style") {
+      override = "variable";
+      return "restricted_atBlock_before";
+    }
+    return pass(type, stream, state);
+  };
+
+  states.restricted_atBlock = function(type, stream, state) {
+    if (type == "}") {
+      state.stateArg = null;
+      return popContext(state);
+    }
+    if (type == "word") {
+      if ((state.stateArg == "@font-face" && !fontProperties.hasOwnProperty(stream.current().toLowerCase())) ||
+          (state.stateArg == "@counter-style" && !counterDescriptors.hasOwnProperty(stream.current().toLowerCase())))
+        override = "error";
+      else
+        override = "property";
+      return "maybeprop";
+    }
+    return "restricted_atBlock";
+  };
+
+  states.keyframes = function(type, stream, state) {
+    if (type == "word") { override = "variable"; return "keyframes"; }
+    if (type == "{") return pushContext(state, stream, "top");
+    return pass(type, stream, state);
+  };
+
+  states.at = function(type, stream, state) {
+    if (type == ";") return popContext(state);
+    if (type == "{" || type == "}") return popAndPass(type, stream, state);
+    if (type == "word") override = "tag";
+    else if (type == "hash") override = "builtin";
+    return "at";
+  };
+
+  states.interpolation = function(type, stream, state) {
+    if (type == "}") return popContext(state);
+    if (type == "{" || type == ";") return popAndPass(type, stream, state);
+    if (type == "word") override = "variable";
+    else if (type != "variable" && type != "(" && type != ")") override = "error";
+    return "interpolation";
+  };
+
   return {
     startState: function(base) {
-      return {tokenize: tokenBase,
-              baseIndent: base || 0,
-              stack: [],
-              lastToken: null};
+      return {tokenize: null,
+              state: inline ? "block" : "top",
+              stateArg: null,
+              context: new Context(inline ? "block" : "top", base || 0, null)};
     },
 
     token: function(stream, state) {
-
-      // Use these terms when applicable (see http://www.xanthir.com/blog/b4E50)
-      //
-      // rule** or **ruleset:
-      // A selector + braces combo, or an at-rule.
-      //
-      // declaration block:
-      // A sequence of declarations.
-      //
-      // declaration:
-      // A property + colon + value combo.
-      //
-      // property value:
-      // The entire value of a property.
-      //
-      // component value:
-      // A single piece of a property value. Like the 5px in
-      // text-shadow: 0 0 5px blue;. Can also refer to things that are
-      // multiple terms, like the 1-4 terms that make up the background-size
-      // portion of the background shorthand.
-      //
-      // term:
-      // The basic unit of author-facing CSS, like a single number (5),
-      // dimension (5px), string ("foo"), or function. Officially defined
-      //  by the CSS 2.1 grammar (look for the 'term' production)
-      //
-      //
-      // simple selector:
-      // A single atomic selector, like a type selector, an attr selector, a
-      // class selector, etc.
-      //
-      // compound selector:
-      // One or more simple selectors without a combinator. div.example is
-      // compound, div > .example is not.
-      //
-      // complex selector:
-      // One or more compound selectors chained with combinators.
-      //
-      // combinator:
-      // The parts of selectors that express relationships. There are four
-      // currently - the space (descendant combinator), the greater-than
-      // bracket (child combinator), the plus sign (next sibling combinator),
-      // and the tilda (following sibling combinator).
-      //
-      // sequence of selectors:
-      // One or more of the named type of selector chained with commas.
-
-      state.tokenize = state.tokenize || tokenBase;
-      if (state.tokenize == tokenBase && stream.eatSpace()) return null;
-      var style = state.tokenize(stream, state);
-      if (style && typeof style != "string") style = ret(style[0], style[1]);
-
-      // Changing style returned based on context
-      var context = state.stack[state.stack.length-1];
-      if (style == "variable") {
-        if (type == "variable-definition") state.stack.push("propertyValue");
-        return state.lastToken = "variable-2";
-      } else if (style == "property") {
-        var word = stream.current().toLowerCase();
-        if (context == "propertyValue") {
-          if (valueKeywords.hasOwnProperty(word)) {
-            style = "string-2";
-          } else if (colorKeywords.hasOwnProperty(word)) {
-            style = "keyword";
-          } else {
-            style = "variable-2";
-          }
-        } else if (context == "rule") {
-          if (!propertyKeywords.hasOwnProperty(word)) {
-            style += " error";
-          }
-        } else if (context == "block") {
-          // if a value is present in both property, value, or color, the order
-          // of preference is property -> color -> value
-          if (propertyKeywords.hasOwnProperty(word)) {
-            style = "property";
-          } else if (colorKeywords.hasOwnProperty(word)) {
-            style = "keyword";
-          } else if (valueKeywords.hasOwnProperty(word)) {
-            style = "string-2";
-          } else {
-            style = "tag";
-          }
-        } else if (!context || context == "@media{") {
-          style = "tag";
-        } else if (context == "@media") {
-          if (atMediaTypes[stream.current()]) {
-            style = "attribute"; // Known attribute
-          } else if (/^(only|not)$/.test(word)) {
-            style = "keyword";
-          } else if (word == "and") {
-            style = "error"; // "and" is only allowed in @mediaType
-          } else if (atMediaFeatures.hasOwnProperty(word)) {
-            style = "error"; // Known property, should be in @mediaType(
-          } else {
-            // Unknown, expecting keyword or attribute, assuming attribute
-            style = "attribute error";
-          }
-        } else if (context == "@mediaType") {
-          if (atMediaTypes.hasOwnProperty(word)) {
-            style = "attribute";
-          } else if (word == "and") {
-            style = "operator";
-          } else if (/^(only|not)$/.test(word)) {
-            style = "error"; // Only allowed in @media
-          } else {
-            // Unknown attribute or property, but expecting property (preceded
-            // by "and"). Should be in parentheses
-            style = "error";
-          }
-        } else if (context == "@mediaType(") {
-          if (propertyKeywords.hasOwnProperty(word)) {
-            // do nothing, remains "property"
-          } else if (atMediaTypes.hasOwnProperty(word)) {
-            style = "error"; // Known property, should be in parentheses
-          } else if (word == "and") {
-            style = "operator";
-          } else if (/^(only|not)$/.test(word)) {
-            style = "error"; // Only allowed in @media
-          } else {
-            style += " error";
-          }
-        } else if (context == "@import") {
-          style = "tag";
-        } else {
-          style = "error";
-        }
-      } else if (style == "atom") {
-        if(!context || context == "@media{" || context == "block") {
-          style = "builtin";
-        } else if (context == "propertyValue") {
-          if (!/^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/.test(stream.current())) {
-            style += " error";
-          }
-        } else {
-          style = "error";
-        }
-      } else if (context == "@media" && type == "{") {
-        style = "error";
+      if (!state.tokenize && stream.eatSpace()) return null;
+      var style = (state.tokenize || tokenBase)(stream, state);
+      if (style && typeof style == "object") {
+        type = style[1];
+        style = style[0];
       }
-
-      // Push/pop context stack
-      if (type == "{") {
-        if (context == "@media" || context == "@mediaType") {
-          state.stack[state.stack.length-1] = "@media{";
-        }
-        else {
-          var newContext = allowNested ? "block" : "rule";
-          state.stack.push(newContext);
-        }
-      }
-      else if (type == "}") {
-        if (context == "interpolation") style = "operator";
-        // Pop off end of array until { is reached
-        while(state.stack.length){
-          var removed = state.stack.pop();
-          if(removed.indexOf("{") > -1 || removed == "block" || removed == "rule"){
-            break;
-          }
-        }
-      }
-      else if (type == "interpolation") state.stack.push("interpolation");
-      else if (type == "@media") state.stack.push("@media");
-      else if (type == "@import") state.stack.push("@import");
-      else if (context == "@media" && /\b(keyword|attribute)\b/.test(style))
-        state.stack[state.stack.length-1] = "@mediaType";
-      else if (context == "@mediaType" && stream.current() == ",")
-        state.stack[state.stack.length-1] = "@media";
-      else if (type == "(") {
-        if (context == "@media" || context == "@mediaType") {
-          // Make sure @mediaType is used to avoid error on {
-          state.stack[state.stack.length-1] = "@mediaType";
-          state.stack.push("@mediaType(");
-        }
-        else state.stack.push("(");
-      }
-      else if (type == ")") {
-        // Pop off end of array until ( is reached
-        while(state.stack.length){
-          var removed = state.stack.pop();
-          if(removed.indexOf("(") > -1){
-            break;
-          }
-        }
-      }
-      else if (type == ":" && state.lastToken == "property") state.stack.push("propertyValue");
-      else if (context == "propertyValue" && type == ";") state.stack.pop();
-      else if (context == "@import" && type == ";") state.stack.pop();
-
-      return state.lastToken = style;
+      override = style;
+      state.state = states[state.state](type, stream, state);
+      return override;
     },
 
     indent: function(state, textAfter) {
-      var n = state.stack.length;
-      if (/^\}/.test(textAfter))
-        n -= state.stack[n-1] == "propertyValue" ? 2 : 1;
-      return state.baseIndent + n * indentUnit;
+      var cx = state.context, ch = textAfter && textAfter.charAt(0);
+      var indent = cx.indent;
+      if (cx.type == "prop" && (ch == "}" || ch == ")")) cx = cx.prev;
+      if (cx.prev) {
+        if (ch == "}" && (cx.type == "block" || cx.type == "top" ||
+                          cx.type == "interpolation" || cx.type == "restricted_atBlock")) {
+          // Resume indentation from parent context.
+          cx = cx.prev;
+          indent = cx.indent;
+        } else if (ch == ")" && (cx.type == "parens" || cx.type == "atBlock_parens") ||
+            ch == "{" && (cx.type == "at" || cx.type == "atBlock")) {
+          // Dedent relative to current context.
+          indent = Math.max(0, cx.indent - indentUnit);
+          cx = cx.prev;
+        }
+      }
+      return indent;
     },
 
     electricChars: "}",
@@ -312,21 +411,24 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
   };
 });
 
-(function() {
   function keySet(array) {
     var keys = {};
     for (var i = 0; i < array.length; ++i) {
-      keys[array[i]] = true;
+      keys[array[i].toLowerCase()] = true;
     }
     return keys;
   }
 
-  var atMediaTypes = keySet([
+  var documentTypes_ = [
+    "domain", "regexp", "url", "url-prefix"
+  ], documentTypes = keySet(documentTypes_);
+
+  var mediaTypes_ = [
     "all", "aural", "braille", "handheld", "print", "projection", "screen",
     "tty", "tv", "embossed"
-  ]);
+  ], mediaTypes = keySet(mediaTypes_);
 
-  var atMediaFeatures = keySet([
+  var mediaFeatures_ = [
     "width", "min-width", "max-width", "height", "min-height", "max-height",
     "device-width", "min-device-width", "max-device-width", "device-height",
     "min-device-height", "max-device-height", "aspect-ratio",
@@ -334,17 +436,24 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "min-device-aspect-ratio", "max-device-aspect-ratio", "color", "min-color",
     "max-color", "color-index", "min-color-index", "max-color-index",
     "monochrome", "min-monochrome", "max-monochrome", "resolution",
-    "min-resolution", "max-resolution", "scan", "grid"
-  ]);
+    "min-resolution", "max-resolution", "scan", "grid", "orientation",
+    "device-pixel-ratio", "min-device-pixel-ratio", "max-device-pixel-ratio",
+    "pointer", "any-pointer", "hover", "any-hover"
+  ], mediaFeatures = keySet(mediaFeatures_);
 
-  var propertyKeywords = keySet([
+  var mediaValueKeywords_ = [
+    "landscape", "portrait", "none", "coarse", "fine", "on-demand", "hover",
+    "interlace", "progressive"
+  ], mediaValueKeywords = keySet(mediaValueKeywords_);
+
+  var propertyKeywords_ = [
     "align-content", "align-items", "align-self", "alignment-adjust",
     "alignment-baseline", "anchor-point", "animation", "animation-delay",
-    "animation-direction", "animation-duration", "animation-iteration-count",
-    "animation-name", "animation-play-state", "animation-timing-function",
-    "appearance", "azimuth", "backface-visibility", "background",
-    "background-attachment", "background-clip", "background-color",
-    "background-image", "background-origin", "background-position",
+    "animation-direction", "animation-duration", "animation-fill-mode",
+    "animation-iteration-count", "animation-name", "animation-play-state",
+    "animation-timing-function", "appearance", "azimuth", "backface-visibility",
+    "background", "background-attachment", "background-blend-mode", "background-clip",
+    "background-color", "background-image", "background-origin", "background-position",
     "background-repeat", "background-size", "baseline-shift", "binding",
     "bleed", "bookmark-label", "bookmark-level", "bookmark-state",
     "bookmark-target", "border", "border-bottom", "border-bottom-color",
@@ -374,20 +483,22 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "font-stretch", "font-style", "font-synthesis", "font-variant",
     "font-variant-alternates", "font-variant-caps", "font-variant-east-asian",
     "font-variant-ligatures", "font-variant-numeric", "font-variant-position",
-    "font-weight", "grid-cell", "grid-column", "grid-column-align",
-    "grid-column-sizing", "grid-column-span", "grid-columns", "grid-flow",
-    "grid-row", "grid-row-align", "grid-row-sizing", "grid-row-span",
-    "grid-rows", "grid-template", "hanging-punctuation", "height", "hyphens",
+    "font-weight", "grid", "grid-area", "grid-auto-columns", "grid-auto-flow",
+    "grid-auto-rows", "grid-column", "grid-column-end", "grid-column-gap",
+    "grid-column-start", "grid-gap", "grid-row", "grid-row-end", "grid-row-gap",
+    "grid-row-start", "grid-template", "grid-template-areas", "grid-template-columns",
+    "grid-template-rows", "hanging-punctuation", "height", "hyphens",
     "icon", "image-orientation", "image-rendering", "image-resolution",
     "inline-box-align", "justify-content", "left", "letter-spacing",
     "line-break", "line-height", "line-stacking", "line-stacking-ruby",
     "line-stacking-shift", "line-stacking-strategy", "list-style",
     "list-style-image", "list-style-position", "list-style-type", "margin",
     "margin-bottom", "margin-left", "margin-right", "margin-top",
-    "marker-offset", "marks", "marquee-direction", "marquee-loop",
+    "marks", "marquee-direction", "marquee-loop",
     "marquee-play-count", "marquee-speed", "marquee-style", "max-height",
     "max-width", "min-height", "min-width", "move-to", "nav-down", "nav-index",
-    "nav-left", "nav-right", "nav-up", "opacity", "order", "orphans", "outline",
+    "nav-left", "nav-right", "nav-up", "object-fit", "object-position",
+    "opacity", "order", "orphans", "outline",
     "outline-color", "outline-offset", "outline-style", "outline-width",
     "overflow", "overflow-style", "overflow-wrap", "overflow-x", "overflow-y",
     "padding", "padding-bottom", "padding-left", "padding-right", "padding-top",
@@ -398,8 +509,8 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "region-break-before", "region-break-inside", "region-fragment",
     "rendering-intent", "resize", "rest", "rest-after", "rest-before", "richness",
     "right", "rotation", "rotation-point", "ruby-align", "ruby-overhang",
-    "ruby-position", "ruby-span", "shape-inside", "shape-outside", "size",
-    "speak", "speak-as", "speak-header",
+    "ruby-position", "ruby-span", "shape-image-threshold", "shape-inside", "shape-margin",
+    "shape-outside", "size", "speak", "speak-as", "speak-header",
     "speak-numeral", "speak-punctuation", "speech-rate", "stress", "string-set",
     "tab-size", "table-layout", "target", "target-name", "target-new",
     "target-position", "text-align", "text-align-last", "text-decoration",
@@ -408,26 +519,44 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "text-emphasis-position", "text-emphasis-style", "text-height",
     "text-indent", "text-justify", "text-outline", "text-overflow", "text-shadow",
     "text-size-adjust", "text-space-collapse", "text-transform", "text-underline-position",
-    "text-wrap", "top", "transform", "transform-origin", "transform-style",
+    "text-wrap", "top", "transform", "transform-box", "transform-origin", "transform-style",
     "transition", "transition-delay", "transition-duration",
     "transition-property", "transition-timing-function", "unicode-bidi",
-    "vertical-align", "visibility", "voice-balance", "voice-duration",
+    "user-select", "vertical-align", "visibility", "voice-balance", "voice-duration",
     "voice-family", "voice-pitch", "voice-range", "voice-rate", "voice-stress",
-    "voice-volume", "volume", "white-space", "widows", "width", "word-break",
-    "word-spacing", "word-wrap", "z-index", "zoom",
+    "voice-volume", "volume", "white-space", "widows", "width", "will-change", "word-break",
+    "word-spacing", "word-wrap", "z-index",
     // SVG-specific
     "clip-path", "clip-rule", "mask", "enable-background", "filter", "flood-color",
     "flood-opacity", "lighting-color", "stop-color", "stop-opacity", "pointer-events",
-    "color-interpolation", "color-interpolation-filters", "color-profile",
+    "color-interpolation", "color-interpolation-filters",
     "color-rendering", "fill", "fill-opacity", "fill-rule", "image-rendering",
     "marker", "marker-end", "marker-mid", "marker-start", "shape-rendering", "stroke",
     "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin",
     "stroke-miterlimit", "stroke-opacity", "stroke-width", "text-rendering",
     "baseline-shift", "dominant-baseline", "glyph-orientation-horizontal",
-    "glyph-orientation-vertical", "kerning", "text-anchor", "writing-mode"
-  ]);
+    "glyph-orientation-vertical", "text-anchor", "writing-mode"
+  ], propertyKeywords = keySet(propertyKeywords_);
+
+  var nonStandardPropertyKeywords_ = [
+    "scrollbar-arrow-color", "scrollbar-base-color", "scrollbar-dark-shadow-color",
+    "scrollbar-face-color", "scrollbar-highlight-color", "scrollbar-shadow-color",
+    "scrollbar-3d-light-color", "scrollbar-track-color", "shape-inside",
+    "searchfield-cancel-button", "searchfield-decoration", "searchfield-results-button",
+    "searchfield-results-decoration", "zoom"
+  ], nonStandardPropertyKeywords = keySet(nonStandardPropertyKeywords_);
 
-  var colorKeywords = keySet([
+  var fontProperties_ = [
+    "font-family", "src", "unicode-range", "font-variant", "font-feature-settings",
+    "font-stretch", "font-weight", "font-style"
+  ], fontProperties = keySet(fontProperties_);
+
+  var counterDescriptors_ = [
+    "additive-symbols", "fallback", "negative", "pad", "prefix", "range",
+    "speak-as", "suffix", "symbols", "system"
+  ], counterDescriptors = keySet(counterDescriptors_);
+
+  var colorKeywords_ = [
     "aliceblue", "antiquewhite", "aqua", "aquamarine", "azure", "beige",
     "bisque", "black", "blanchedalmond", "blue", "blueviolet", "brown",
     "burlywood", "cadetblue", "chartreuse", "chocolate", "coral", "cornflowerblue",
@@ -449,54 +578,58 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "navajowhite", "navy", "oldlace", "olive", "olivedrab", "orange", "orangered",
     "orchid", "palegoldenrod", "palegreen", "paleturquoise", "palevioletred",
     "papayawhip", "peachpuff", "peru", "pink", "plum", "powderblue",
-    "purple", "red", "rosybrown", "royalblue", "saddlebrown", "salmon",
-    "sandybrown", "seagreen", "seashell", "sienna", "silver", "skyblue",
+    "purple", "rebeccapurple", "red", "rosybrown", "royalblue", "saddlebrown",
+    "salmon", "sandybrown", "seagreen", "seashell", "sienna", "silver", "skyblue",
     "slateblue", "slategray", "snow", "springgreen", "steelblue", "tan",
     "teal", "thistle", "tomato", "turquoise", "violet", "wheat", "white",
     "whitesmoke", "yellow", "yellowgreen"
-  ]);
+  ], colorKeywords = keySet(colorKeywords_);
 
-  var valueKeywords = keySet([
-    "above", "absolute", "activeborder", "activecaption", "afar",
-    "after-white-space", "ahead", "alias", "all", "all-scroll", "alternate",
+  var valueKeywords_ = [
+    "above", "absolute", "activeborder", "additive", "activecaption", "afar",
+    "after-white-space", "ahead", "alias", "all", "all-scroll", "alphabetic", "alternate",
     "always", "amharic", "amharic-abegede", "antialiased", "appworkspace",
-    "arabic-indic", "armenian", "asterisks", "auto", "avoid", "avoid-column", "avoid-page",
+    "arabic-indic", "armenian", "asterisks", "attr", "auto", "avoid", "avoid-column", "avoid-page",
     "avoid-region", "background", "backwards", "baseline", "below", "bidi-override", "binary",
     "bengali", "blink", "block", "block-axis", "bold", "bolder", "border", "border-box",
-    "both", "bottom", "break", "break-all", "break-word", "button", "button-bevel",
-    "buttonface", "buttonhighlight", "buttonshadow", "buttontext", "cambodian",
+    "both", "bottom", "break", "break-all", "break-word", "bullets", "button", "button-bevel",
+    "buttonface", "buttonhighlight", "buttonshadow", "buttontext", "calc", "cambodian",
     "capitalize", "caps-lock-indicator", "caption", "captiontext", "caret",
-    "cell", "center", "checkbox", "circle", "cjk-earthly-branch",
+    "cell", "center", "checkbox", "circle", "cjk-decimal", "cjk-earthly-branch",
     "cjk-heavenly-stem", "cjk-ideographic", "clear", "clip", "close-quote",
-    "col-resize", "collapse", "column", "compact", "condensed", "contain", "content",
-    "content-box", "context-menu", "continuous", "copy", "cover", "crop",
-    "cross", "crosshair", "currentcolor", "cursive", "dashed", "decimal",
-    "decimal-leading-zero", "default", "default-button", "destination-atop",
-    "destination-in", "destination-out", "destination-over", "devanagari",
-    "disc", "discard", "document", "dot-dash", "dot-dot-dash", "dotted",
-    "double", "down", "e-resize", "ease", "ease-in", "ease-in-out", "ease-out",
+    "col-resize", "collapse", "color", "color-burn", "color-dodge", "color-well", "column", "column-reverse",
+    "compact", "condensed", "contain", "content", "contents",
+    "content-box", "context-menu", "continuous", "copy", "counter", "counters", "cover", "crop",
+    "cross", "crosshair", "currentcolor", "cursive", "cyclic", "darken", "dashed", "decimal",
+    "decimal-leading-zero", "default", "default-button", "dense", "destination-atop",
+    "destination-in", "destination-out", "destination-over", "devanagari", "difference",
+    "disc", "discard", "disclosure-closed", "disclosure-open", "document",
+    "dot-dash", "dot-dot-dash",
+    "dotted", "double", "down", "e-resize", "ease", "ease-in", "ease-in-out", "ease-out",
     "element", "ellipse", "ellipsis", "embed", "end", "ethiopic", "ethiopic-abegede",
     "ethiopic-abegede-am-et", "ethiopic-abegede-gez", "ethiopic-abegede-ti-er",
     "ethiopic-abegede-ti-et", "ethiopic-halehame-aa-er",
     "ethiopic-halehame-aa-et", "ethiopic-halehame-am-et",
     "ethiopic-halehame-gez", "ethiopic-halehame-om-et",
     "ethiopic-halehame-sid-et", "ethiopic-halehame-so-et",
-    "ethiopic-halehame-ti-er", "ethiopic-halehame-ti-et",
-    "ethiopic-halehame-tig", "ew-resize", "expanded", "extra-condensed",
-    "extra-expanded", "fantasy", "fast", "fill", "fixed", "flat", "footnotes",
-    "forwards", "from", "geometricPrecision", "georgian", "graytext", "groove",
-    "gujarati", "gurmukhi", "hand", "hangul", "hangul-consonant", "hebrew",
+    "ethiopic-halehame-ti-er", "ethiopic-halehame-ti-et", "ethiopic-halehame-tig",
+    "ethiopic-numeric", "ew-resize", "exclusion", "expanded", "extends", "extra-condensed",
+    "extra-expanded", "fantasy", "fast", "fill", "fixed", "flat", "flex", "flex-end", "flex-start", "flow-root", "footnotes",
+    "forwards", "from", "geometricPrecision", "georgian", "graytext", "grid", "groove",
+    "gujarati", "gurmukhi", "hand", "hangul", "hangul-consonant", "hard-light", "hebrew",
     "help", "hidden", "hide", "higher", "highlight", "highlighttext",
-    "hiragana", "hiragana-iroha", "horizontal", "hsl", "hsla", "icon", "ignore",
+    "hiragana", "hiragana-iroha", "horizontal", "hsl", "hsla", "hue", "icon", "ignore",
     "inactiveborder", "inactivecaption", "inactivecaptiontext", "infinite",
     "infobackground", "infotext", "inherit", "initial", "inline", "inline-axis",
-    "inline-block", "inline-table", "inset", "inside", "intrinsic", "invert",
-    "italic", "justify", "kannada", "katakana", "katakana-iroha", "keep-all", "khmer",
-    "landscape", "lao", "large", "larger", "left", "level", "lighter",
-    "line-through", "linear", "lines", "list-item", "listbox", "listitem",
+    "inline-block", "inline-flex", "inline-grid", "inline-table", "inset", "inside", "intrinsic", "invert",
+    "italic", "japanese-formal", "japanese-informal", "justify", "kannada",
+    "katakana", "katakana-iroha", "keep-all", "khmer",
+    "korean-hangul-formal", "korean-hanja-formal", "korean-hanja-informal",
+    "landscape", "lao", "large", "larger", "left", "level", "lighter", "lighten",
+    "line-through", "linear", "linear-gradient", "lines", "list-item", "listbox", "list-button", "listitem",
     "local", "logical", "loud", "lower", "lower-alpha", "lower-armenian",
     "lower-greek", "lower-hexadecimal", "lower-latin", "lower-norwegian",
-    "lower-roman", "lowercase", "ltr", "malayalam", "match",
+    "lower-roman", "lowercase", "ltr", "luminosity", "malayalam", "match", "matrix", "matrix3d",
     "media-controls-background", "media-current-time-display",
     "media-fullscreen-button", "media-mute-button", "media-play-button",
     "media-return-to-realtime-button", "media-rewind-button",
@@ -505,41 +638,54 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "media-volume-slider-container", "media-volume-sliderthumb", "medium",
     "menu", "menulist", "menulist-button", "menulist-text",
     "menulist-textfield", "menutext", "message-box", "middle", "min-intrinsic",
-    "mix", "mongolian", "monospace", "move", "multiple", "myanmar", "n-resize",
+    "mix", "mongolian", "monospace", "move", "multiple", "multiply", "myanmar", "n-resize",
     "narrower", "ne-resize", "nesw-resize", "no-close-quote", "no-drop",
     "no-open-quote", "no-repeat", "none", "normal", "not-allowed", "nowrap",
-    "ns-resize", "nw-resize", "nwse-resize", "oblique", "octal", "open-quote",
+    "ns-resize", "numbers", "numeric", "nw-resize", "nwse-resize", "oblique", "octal", "opacity", "open-quote",
     "optimizeLegibility", "optimizeSpeed", "oriya", "oromo", "outset",
     "outside", "outside-shape", "overlay", "overline", "padding", "padding-box",
-    "painted", "page", "paused", "persian", "plus-darker", "plus-lighter", "pointer",
-    "polygon", "portrait", "pre", "pre-line", "pre-wrap", "preserve-3d", "progress", "push-button",
-    "radio", "read-only", "read-write", "read-write-plaintext-only", "rectangle", "region",
-    "relative", "repeat", "repeat-x", "repeat-y", "reset", "reverse", "rgb", "rgba",
-    "ridge", "right", "round", "row-resize", "rtl", "running",
-    "s-resize", "sans-serif", "scroll", "scrollbar", "se-resize", "searchfield",
+    "painted", "page", "paused", "persian", "perspective", "plus-darker", "plus-lighter",
+    "pointer", "polygon", "portrait", "pre", "pre-line", "pre-wrap", "preserve-3d",
+    "progress", "push-button", "radial-gradient", "radio", "read-only",
+    "read-write", "read-write-plaintext-only", "rectangle", "region",
+    "relative", "repeat", "repeating-linear-gradient",
+    "repeating-radial-gradient", "repeat-x", "repeat-y", "reset", "reverse",
+    "rgb", "rgba", "ridge", "right", "rotate", "rotate3d", "rotateX", "rotateY",
+    "rotateZ", "round", "row", "row-resize", "row-reverse", "rtl", "run-in", "running",
+    "s-resize", "sans-serif", "saturation", "scale", "scale3d", "scaleX", "scaleY", "scaleZ", "screen",
+    "scroll", "scrollbar", "scroll-position", "se-resize", "searchfield",
     "searchfield-cancel-button", "searchfield-decoration",
     "searchfield-results-button", "searchfield-results-decoration",
     "semi-condensed", "semi-expanded", "separate", "serif", "show", "sidama",
-    "single", "skip-white-space", "slide", "slider-horizontal",
+    "simp-chinese-formal", "simp-chinese-informal", "single",
+    "skew", "skewX", "skewY", "skip-white-space", "slide", "slider-horizontal",
     "slider-vertical", "sliderthumb-horizontal", "sliderthumb-vertical", "slow",
-    "small", "small-caps", "small-caption", "smaller", "solid", "somali",
-    "source-atop", "source-in", "source-out", "source-over", "space", "square",
-    "square-button", "start", "static", "status-bar", "stretch", "stroke",
-    "sub", "subpixel-antialiased", "super", "sw-resize", "table",
+    "small", "small-caps", "small-caption", "smaller", "soft-light", "solid", "somali",
+    "source-atop", "source-in", "source-out", "source-over", "space", "space-around", "space-between", "spell-out", "square",
+    "square-button", "start", "static", "status-bar", "stretch", "stroke", "sub",
+    "subpixel-antialiased", "super", "sw-resize", "symbolic", "symbols", "table",
     "table-caption", "table-cell", "table-column", "table-column-group",
     "table-footer-group", "table-header-group", "table-row", "table-row-group",
+    "tamil",
     "telugu", "text", "text-bottom", "text-top", "textarea", "textfield", "thai",
     "thick", "thin", "threeddarkshadow", "threedface", "threedhighlight",
     "threedlightshadow", "threedshadow", "tibetan", "tigre", "tigrinya-er",
     "tigrinya-er-abegede", "tigrinya-et", "tigrinya-et-abegede", "to", "top",
-    "transparent", "ultra-condensed", "ultra-expanded", "underline", "up",
+    "trad-chinese-formal", "trad-chinese-informal", "transform",
+    "translate", "translate3d", "translateX", "translateY", "translateZ",
+    "transparent", "ultra-condensed", "ultra-expanded", "underline", "unset", "up",
     "upper-alpha", "upper-armenian", "upper-greek", "upper-hexadecimal",
     "upper-latin", "upper-norwegian", "upper-roman", "uppercase", "urdu", "url",
-    "vertical", "vertical-text", "visible", "visibleFill", "visiblePainted",
+    "var", "vertical", "vertical-text", "visible", "visibleFill", "visiblePainted",
     "visibleStroke", "visual", "w-resize", "wait", "wave", "wider",
-    "window", "windowframe", "windowtext", "x-large", "x-small", "xor",
+    "window", "windowframe", "windowtext", "words", "wrap", "wrap-reverse", "x-large", "x-small", "xor",
     "xx-large", "xx-small"
-  ]);
+  ], valueKeywords = keySet(valueKeywords_);
+
+  var allWords = documentTypes_.concat(mediaTypes_).concat(mediaFeatures_).concat(mediaValueKeywords_)
+    .concat(propertyKeywords_).concat(nonStandardPropertyKeywords_).concat(colorKeywords_)
+    .concat(valueKeywords_);
+  CodeMirror.registerHelper("hintWords", "css", allWords);
 
   function tokenCComment(stream, state) {
     var maybeEnd = false, ch;
@@ -554,66 +700,79 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
   }
 
   CodeMirror.defineMIME("text/css", {
-    atMediaTypes: atMediaTypes,
-    atMediaFeatures: atMediaFeatures,
+    documentTypes: documentTypes,
+    mediaTypes: mediaTypes,
+    mediaFeatures: mediaFeatures,
+    mediaValueKeywords: mediaValueKeywords,
     propertyKeywords: propertyKeywords,
+    nonStandardPropertyKeywords: nonStandardPropertyKeywords,
+    fontProperties: fontProperties,
+    counterDescriptors: counterDescriptors,
     colorKeywords: colorKeywords,
     valueKeywords: valueKeywords,
-    hooks: {
-      "<": function(stream, state) {
-        function tokenSGMLComment(stream, state) {
-          var dashes = 0, ch;
-          while ((ch = stream.next()) != null) {
-            if (dashes >= 2 && ch == ">") {
-              state.tokenize = null;
-              break;
-            }
-            dashes = (ch == "-") ? dashes + 1 : 0;
-          }
-          return ["comment", "comment"];
-        }
-        if (stream.eat("!")) {
-          state.tokenize = tokenSGMLComment;
-          return tokenSGMLComment(stream, state);
-        }
-      },
+    tokenHooks: {
       "/": function(stream, state) {
-        if (stream.eat("*")) {
-          state.tokenize = tokenCComment;
-          return tokenCComment(stream, state);
-        }
-        return false;
+        if (!stream.eat("*")) return false;
+        state.tokenize = tokenCComment;
+        return tokenCComment(stream, state);
       }
     },
     name: "css"
   });
 
   CodeMirror.defineMIME("text/x-scss", {
-    atMediaTypes: atMediaTypes,
-    atMediaFeatures: atMediaFeatures,
+    mediaTypes: mediaTypes,
+    mediaFeatures: mediaFeatures,
+    mediaValueKeywords: mediaValueKeywords,
     propertyKeywords: propertyKeywords,
+    nonStandardPropertyKeywords: nonStandardPropertyKeywords,
     colorKeywords: colorKeywords,
     valueKeywords: valueKeywords,
+    fontProperties: fontProperties,
     allowNested: true,
-    hooks: {
+    tokenHooks: {
+      "/": function(stream, state) {
+        if (stream.eat("/")) {
+          stream.skipToEnd();
+          return ["comment", "comment"];
+        } else if (stream.eat("*")) {
+          state.tokenize = tokenCComment;
+          return tokenCComment(stream, state);
+        } else {
+          return ["operator", "operator"];
+        }
+      },
       ":": function(stream) {
-        if (stream.match(/\s*{/)) {
+        if (stream.match(/\s*\{/))
           return [null, "{"];
-        }
         return false;
       },
       "$": function(stream) {
         stream.match(/^[\w-]+/);
-        if (stream.peek() == ":") {
-          return ["variable", "variable-definition"];
-        }
-        return ["variable", "variable"];
-      },
-      ",": function(stream, state) {
-        if (state.stack[state.stack.length - 1] == "propertyValue" && stream.match(/^ *\$/, false)) {
-          return ["operator", ";"];
-        }
+        if (stream.match(/^\s*:/, false))
+          return ["variable-2", "variable-definition"];
+        return ["variable-2", "variable"];
       },
+      "#": function(stream) {
+        if (!stream.eat("{")) return false;
+        return [null, "interpolation"];
+      }
+    },
+    name: "css",
+    helperType: "scss"
+  });
+
+  CodeMirror.defineMIME("text/x-less", {
+    mediaTypes: mediaTypes,
+    mediaFeatures: mediaFeatures,
+    mediaValueKeywords: mediaValueKeywords,
+    propertyKeywords: propertyKeywords,
+    nonStandardPropertyKeywords: nonStandardPropertyKeywords,
+    colorKeywords: colorKeywords,
+    valueKeywords: valueKeywords,
+    fontProperties: fontProperties,
+    allowNested: true,
+    tokenHooks: {
       "/": function(stream, state) {
         if (stream.eat("/")) {
           stream.skipToEnd();
@@ -625,15 +784,42 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
           return ["operator", "operator"];
         }
       },
-      "#": function(stream) {
-        if (stream.eat("{")) {
-          return ["operator", "interpolation"];
-        } else {
-          stream.eatWhile(/[\w\\\-]/);
-          return ["atom", "hash"];
-        }
+      "@": function(stream) {
+        if (stream.eat("{")) return [null, "interpolation"];
+        if (stream.match(/^(charset|document|font-face|import|(-(moz|ms|o|webkit)-)?keyframes|media|namespace|page|supports)\b/, false)) return false;
+        stream.eatWhile(/[\w\\\-]/);
+        if (stream.match(/^\s*:/, false))
+          return ["variable-2", "variable-definition"];
+        return ["variable-2", "variable"];
+      },
+      "&": function() {
+        return ["atom", "atom"];
       }
     },
-    name: "css"
+    name: "css",
+    helperType: "less"
+  });
+
+  CodeMirror.defineMIME("text/x-gss", {
+    documentTypes: documentTypes,
+    mediaTypes: mediaTypes,
+    mediaFeatures: mediaFeatures,
+    propertyKeywords: propertyKeywords,
+    nonStandardPropertyKeywords: nonStandardPropertyKeywords,
+    fontProperties: fontProperties,
+    counterDescriptors: counterDescriptors,
+    colorKeywords: colorKeywords,
+    valueKeywords: valueKeywords,
+    supportsAtComponent: true,
+    tokenHooks: {
+      "/": function(stream, state) {
+        if (!stream.eat("*")) return false;
+        state.tokenize = tokenCComment;
+        return tokenCComment(stream, state);
+      }
+    },
+    name: "css",
+    helperType: "gss"
   });
-})();
+
+});