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-elm.js

@@ -15,7 +15,7 @@ var ElmHighlightRules = function() {
     
     var smallRe = /[a-z_]/.source;
     var largeRe = /[A-Z]/.source;
-    var idRe = /[a-z_A-Z0-9\']/.source;
+    var idRe = /[a-z_A-Z0-9']/.source;
 
     this.$rules = {
         start: [{
@@ -28,9 +28,12 @@ var ElmHighlightRules = function() {
         }, {
             regex: /0(?:[xX][0-9A-Fa-f]+|[oO][0-7]+)|\d+(\.\d+)?([eE][-+]?\d*)?/,
             token: "constant.numeric"
+        }, {
+            token: "comment",
+            regex: "--.*"
         }, {
             token : "keyword",
-            regex : /\.\.|\||:|=|\\|\"|->|<-|\u2192/
+            regex : /\.\.|\||:|=|\\|"|->|<-|\u2192/
         }, {
             token : "keyword.operator",
             regex : /[-!#$%&*+.\/<=>?@\\^|~:\u03BB\u2192]+/
@@ -69,7 +72,7 @@ var ElmHighlightRules = function() {
         }, {
             token: "paren.rparen",
             regex: /[\])}]/
-        }, ],
+        } ],
         markdown: [{
             regex: /\|\]/,
             next: "start"
@@ -100,7 +103,7 @@ var ElmHighlightRules = function() {
         }],
         string: [{
             token: "constant.language.escape",
-            regex: escapeRe,
+            regex: escapeRe
         }, {
             token: "text",
             regex: /\\(\s|$)/,
@@ -109,6 +112,8 @@ var ElmHighlightRules = function() {
             token: "string.end",
             regex: '"',
             next: "start"
+        }, {
+            defaultToken: "string"
         }],
         stringGap: [{
             token: "text",
@@ -118,7 +123,7 @@ var ElmHighlightRules = function() {
             token: "error",
             regex: "",
             next: "start"
-        }],
+        }]
     };
     
     this.normalizeRules();
@@ -150,8 +155,8 @@ 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/;
@@ -280,12 +285,13 @@ var FoldMode = require("./folding/cstyle").FoldMode;
 var Mode = function() {
     this.HighlightRules = HighlightRules;
     this.foldingRules = new FoldMode();
+    this.$behaviour = this.$defaultBehaviour;
 };
 oop.inherits(Mode, TextMode);
 
 (function() {
     this.lineCommentStart = "--";
-    this.blockComment = {start: "{-", end: "-}"};
+    this.blockComment = {start: "{-", end: "-}", nestable: true};
     this.$id = "ace/mode/elm";
 }).call(Mode.prototype);