markdown mode comment fix

lib/ace/mode/markdown.js

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2010, Ajax.org B.V.
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *     * Redistributions of source code must retain the above copyright
@@ -14,7 +14,7 @@
  *     * Neither the name of Ajax.org B.V. nor the
  *       names of its contributors may be used to endorse or promote products
  *       derived from this software without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
@@ -42,21 +42,21 @@ var MarkdownFoldMode = require("./folding/markdown").FoldMode;
 
 var Mode = function() {
     this.HighlightRules = MarkdownHighlightRules;
-    
+
     this.createModeDelegates({
         "js-": JavaScriptMode,
         "xml-": XmlMode,
         "html-": HtmlMode
     });
-    
+
     this.foldingRules = new MarkdownFoldMode();
 };
 oop.inherits(Mode, TextMode);
 
 (function() {
     this.type = "text";
-    this.lineCommentStart = ">";
-    
+    this.blockComment = {start: "<!--", end: "-->"};
+
     this.getNextLineIndent = function(state, line, tab) {
         if (state == "listblock") {
             var match = /^(\s*)(?:([-+*])|(\d+)\.)(\s+)/.exec(line);