Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.1051
diff -u -r1.1051 common.inc
--- includes/common.inc	21 Nov 2009 00:43:42 -0000	1.1051
+++ includes/common.inc	21 Nov 2009 16:34:12 -0000
@@ -3371,7 +3371,7 @@
         $base = base_path() . dirname($stylesheet['data']) . '/';
         _drupal_build_css_path(NULL, $base);
         // Prefix all paths within this CSS file, ignoring external and absolute paths.
-        $data .= preg_replace_callback('/url\([\'"]?(?![a-z]+:|\/+)([^\'")]+)[\'"]?\)/i', '_drupal_build_css_path', $contents);
+        $data .= preg_replace_callback('/url\(\s*[\'"]?(?![a-z]+:|\/+)([^\'")]+)[\'"]?\s*\)/i', '_drupal_build_css_path', $contents);
       }
     }
 
@@ -3484,7 +3484,7 @@
 
   // Replaces @import commands with the actual stylesheet content.
   // This happens recursively but omits external files.
-  $contents = preg_replace_callback('/@import\s*(?:url\()?[\'"]?(?![a-z]+:)([^\'"\()]+)[\'"]?\)?;/', '_drupal_load_stylesheet', $contents);
+  $contents = preg_replace_callback('/@import\s*(?:url\()?\s*[\'"]?(?![a-z]+:)([^\'"\()]+)[\'"]?\s*\)?;/', '_drupal_load_stylesheet', $contents);
   return $contents;
 }
 
@@ -3499,7 +3499,7 @@
   // Load the imported stylesheet and replace @import commands in there as well.
   $file = drupal_load_stylesheet($filename);
   // Alter all url() paths, but not external.
-  return preg_replace('/url\(([\'"]?)(?![a-z]+:)([^\'")]+)[\'"]?\)?;/i', 'url(\1' . dirname($filename) . '/', $file);
+  return preg_replace('/url\(\s*([\'"]?)(?![a-z]+:)([^\'")]+)[\'"]?\s*\)?;/i', 'url(\1' . dirname($filename) . '/', $file);
 }
 
 /**