X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fcore.js;h=98a0dc4bd5f3fd554465146f5c35b28ee5d6b658;hb=d524c7eecca57959130099dada409e1fafd65677;hp=8743f05c49e54dc50ce3be0e965a58d83e32e8a3;hpb=28182b43209b0e62b9ca2192671fc26644953717;p=jquery.git

diff --git a/src/core.js b/src/core.js
index 8743f05..98a0dc4 100644
--- a/src/core.js
+++ b/src/core.js
@@ -579,8 +579,11 @@ jQuery.extend = jQuery.fn.extend = function() {
 					continue;
 
 				// Recurse if we're merging object values
-				if ( deep && copy && typeof copy == "object" && src && !copy.nodeType )
-					target[ name ] = jQuery.extend( deep, src, copy );
+				if ( deep && copy && typeof copy == "object" && !copy.nodeType )
+					target[ name ] = jQuery.extend( deep, 
+						// Never move original objects, clone them
+						src || ( copy.length != null ? [ ] : { } )
+					, copy );
 
 				// Don't bring in undefined values
 				else if ( copy !== undefined )