diff --git a/node/utils/ExportDokuWiki.js b/node/utils/ExportDokuWiki.js
index 48e4b2915..395b4b3c8 100644
--- a/node/utils/ExportDokuWiki.js
+++ b/node/utils/ExportDokuWiki.js
@@ -1,12 +1,12 @@
 /**
  * Copyright 2011 Adrian Lang
- * 
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS-IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -28,7 +28,7 @@ function getPadDokuWiki(pad, revNum, callback)
 
   function (callback)
   {
-    if (revNum != undefined)
+    if (revNum)
     {
       pad.getInternalRevisionAText(revNum, function (err, revisionAtext)
       {
@@ -122,6 +122,8 @@ function getDokuWikiFromAtext(pad, atext)
       var iter = Changeset.opIterator(Changeset.subattribution(attribs, idx, idx + numChars));
       idx += numChars;
 
+      var i;
+
       while (iter.hasNext())
       {
         var o = iter.next();
@@ -142,7 +144,7 @@ function getDokuWikiFromAtext(pad, atext)
             }
           }
         });
-        for (var i = 0; i < propVals.length; i++)
+        for (i = 0; i < propVals.length; i++)
         {
           if (propVals[i] === true)
           {
@@ -160,7 +162,7 @@ function getDokuWikiFromAtext(pad, atext)
         {
           // leaving bold (e.g.) also leaves italics, etc.
           var left = false;
-          for (var i = 0; i < propVals.length; i++)
+          for (i = 0; i < propVals.length; i++)
           {
             var v = propVals[i];
             if (!left)
@@ -179,7 +181,7 @@ function getDokuWikiFromAtext(pad, atext)
             }
           }
 
-          for (var i = propVals.length - 1; i >= 0; i--)
+          for (i = propVals.length - 1; i >= 0; i--)
           {
             if (propVals[i] === LEAVE)
             {
@@ -191,7 +193,7 @@ function getDokuWikiFromAtext(pad, atext)
               emitCloseTag(i);
             }
           }
-          for (var i = 0; i < propVals.length; i++)
+          for (i = 0; i < propVals.length; i++)
           {
             if (propVals[i] === ENTER || propVals[i] === STAY)
             {
@@ -210,7 +212,7 @@ function getDokuWikiFromAtext(pad, atext)
 
         assem.append(_escapeDokuWiki(s));
       } // end iteration over spans in line
-      for (var i = propVals.length - 1; i >= 0; i--)
+      for (i = propVals.length - 1; i >= 0; i--)
       {
         if (propVals[i])
         {
@@ -310,7 +312,7 @@ exports.getPadDokuWikiDocument = function (padId, revNum, callback)
 
     getPadDokuWiki(pad, revNum, callback);
   });
-}
+};
 
 function _escapeDokuWiki(s)
 {
@@ -321,7 +323,7 @@ function _escapeDokuWiki(s)
 // copied from ACE
 var _REGEX_WORDCHAR = /[\u0030-\u0039\u0041-\u005A\u0061-\u007A\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF\u0100-\u1FFF\u3040-\u9FFF\uF900-\uFDFF\uFE70-\uFEFE\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFDC]/;
 var _REGEX_SPACE = /\s/;
-var _REGEX_URLCHAR = new RegExp('(' + /[-:@a-zA-Z0-9_.,~%+\/\\?=&#;()$]/.source + '|' + _REGEX_WORDCHAR.source + ')');
+var _REGEX_URLCHAR = new RegExp('(' + (/[\-:@a-zA-Z0-9_.,~%+\/\\?=&#;()$]/).source + '|' + _REGEX_WORDCHAR.source + ')');
 var _REGEX_URL = new RegExp(/(?:(?:https?|s?ftp|ftps|file|smb|afp|nfs|(x-)?man|gopher|txmt):\/\/|mailto:)/.source + _REGEX_URLCHAR.source + '*(?![:.,;])' + _REGEX_URLCHAR.source, 'g');
 
 // returns null if no URLs, or [[startIndex1, url1], [startIndex2, url2], ...]