Update ACE Editor to version 1.2.9

The new ACE editor introduces full support for emojis (and, thereby, UTF-16 characters with high- and low-surrogates). Hence, we can remove our custom fix.

Further, this update will allow emojis to be used in pair programming sessions.

vendor/assets/javascripts/ace/mode-dot.js

@@ -65,7 +65,7 @@ DocCommentHighlightRules.getTagRule = function(start) {
         token : "comment.doc.tag.storage.type",
         regex : "\\b(?:TODO|FIXME|XXX|HACK)\\b"
     };
-}
+};
 
 DocCommentHighlightRules.getStartRule = function(start) {
     return {
@@ -163,13 +163,10 @@ var DotHighlightRules = function() {
         "comment" : [
             {
                 token : "comment", // closing comment
-                regex : ".*?\\*\\/",
-                merge : true,
+                regex : "\\*\\/",
                 next : "start"
             }, {
-                token : "comment", // comment spanning whole line
-                merge : true,
-                regex : ".+"
+                defaultToken : "comment"
             }
         ],
         "qqstring" : [
@@ -236,8 +233,8 @@ oop.inherits(FoldMode, BaseFoldMode);
 
 (function() {
     
-    this.foldingStartMarker = /(\{|\[)[^\}\]]*$|^\s*(\/\*)/;
-    this.foldingStopMarker = /^[^\[\{]*(\}|\])|^[\s\*]*(\*\/)/;
+    this.foldingStartMarker = /([\{\[\(])[^\}\]\)]*$|^\s*(\/\*)/;
+    this.foldingStopMarker = /^[^\[\{\(]*([\}\]\)])|^[\s\*]*(\*\/)/;
     this.singleLineBlockCommentRe= /^\s*(\/\*).*\*\/\s*$/;
     this.tripleStarBlockCommentRe = /^\s*(\/\*\*\*).*\*\/\s*$/;
     this.startRegionRe = /^\s*(\/\*|\/\/)#?region\b/;
@@ -368,6 +365,7 @@ var Mode = function() {
     this.HighlightRules = DotHighlightRules;
     this.$outdent = new MatchingBraceOutdent();
     this.foldingRules = new DotFoldMode();
+    this.$behaviour = this.$defaultBehaviour;
 };
 oop.inherits(Mode, TextMode);
 
@@ -388,7 +386,7 @@ oop.inherits(Mode, TextMode);
         }
 
         if (state == "start") {
-            var match = line.match(/^.*(?:\bcase\b.*\:|[\{\(\[])\s*$/);
+            var match = line.match(/^.*(?:\bcase\b.*:|[\{\(\[])\s*$/);
             if (match) {
                 indent += tab;
             }