toggleFold must fold strings and comments as well

lib/ace/edit_session.js

@@ -173,6 +173,27 @@ var EditSession = function(text, mode) {
         return this.bgTokenizer.getTokens(firstRow, lastRow);
     };
 
+    this.getTokenAt = function(row, column) {
+        var tokens = this.bgTokenizer.getTokens(row, row)[0].tokens;
+        var token, c = 0;
+        if (column == null) {
+            i = tokens.length - 1;
+            c = this.getLine(row).length;
+        } else {
+            for (var i = 0; i < tokens.length; i++) {
+                c += tokens[i].value.length;
+                if (c >= column)
+                    break;
+            }
+        }
+        token = tokens[i];
+        if (!token)
+            return null;
+        token.index = i;
+        token.start = c - token.value.length;
+        return token;
+    };
+
     this.setUndoManager = function(undoManager) {
         this.$undoManager = undoManager;
         this.$resetRowCache(0);

lib/ace/edit_session/folding.js

@@ -517,6 +517,26 @@ function Folding() {
                     range.start = bracketPos;
 
                 range.start.column++;
+            } else {
+                var token = this.getTokenAt(cursor.row, cursor.column);
+                if (token && /^comment|string/.test(token.type)) {
+                    var startRow = cursor.row;
+                    var endRow = cursor.row;
+                    var t = token;
+                    while ((t = this.getTokenAt(startRow - 1)) && t.type == token.type) {
+                        startRow --;
+                        token = t;
+                    }
+                    range.start.row = startRow;
+                    range.start.column = token.start + 2;
+
+                    while ((t = this.getTokenAt(endRow + 1, 0)) && t.type == token.type) {
+                        endRow ++;
+                        token = t;
+                    }
+                    range.end.row = endRow;
+                    range.end.column = token.start + token.value.length - 1;
+                }
             }
         } else {
             var folds = this.getFoldsInRange(range);