prototype: Fix Function#argumentNames for IE

prototypejs · Aug 9, 2007 · e75cd0a · e75cd0a
1 parent 220f637
commit e75cd0a
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diff --git a/CHANGELOG b/CHANGELOG
@@ -1,6 +1,6 @@
 *SVN*
 
-* Fix Function#argumentNames for Opera [Thomas Fuchs]
+* Fix Function#argumentNames for Opera and IE.  [Thomas Fuchs]
 
 * Add Object.isString, Object.isNumber, and Object.isUndefined, and clean up the source to make use of Object.isXXX where possible.  [sam]
 

diff --git a/src/base.js b/src/base.js
@@ -154,7 +154,7 @@ Object.extend(Object, {
 
 Object.extend(Function.prototype, {
   argumentNames: function() {
-    var names = this.toString().match(/^\s*function\s*\((.*?)\)/)[1].split(",").invoke("strip");
+    var names = this.toString().match(/^[\s\(]*function\s*\((.*?)\)/)[1].split(",").invoke("strip");
     return names.length == 1 && !names[0] ? [] : names;
   },