From e5e24bd33f348f89bedc76b2b650a2b4c5a0a024 Mon Sep 17 00:00:00 2001
From: Ariel Flesler <aflesler@gmail.com>
Date: Tue, 6 May 2008 14:54:53 +0000
Subject: [PATCH] jquery core: enhancements to jquery.map, closes #2803

---
 src/core.js | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/core.js b/src/core.js
index 6b497fdc..c9076b68 100644
--- a/src/core.js
+++ b/src/core.js
@@ -1194,15 +1194,11 @@ jQuery.extend({
 		for ( var i = 0, length = elems.length; i < length; i++ ) {
 			var value = callback( elems[ i ], i );
 
-			if ( value !== null && value != undefined ) {
-				if ( value.constructor != Array )
-					value = [ value ];
-
-				ret = ret.concat( value );
-			}
+			if ( value != null )
+				ret[ ret.length ] = value;
 		}
 
-		return ret;
+		return ret.concat.apply( [], ret );
 	}
 });