Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.615
diff -u -d -F^\s*function -r1.615 common.inc
--- includes/common.inc	31 Jan 2007 15:49:22 -0000	1.615
+++ includes/common.inc	11 Feb 2007 17:01:48 -0000
@@ -1164,7 +1164,7 @@ function url($path = NULL, $query = NULL
   static $script;
   static $clean_url;
 
-  if (empty($script)) {
+  if (!isset($script)) {
     // On some web servers, such as IIS, we can't omit "index.php". So, we
     // generate "index.php?q=foo" instead of "?q=foo" on anything that is not
     // Apache.