? common.inc-d6.patch
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.756.2.73
diff -u -p -r1.756.2.73 common.inc
--- includes/common.inc	6 Nov 2009 08:34:58 -0000	1.756.2.73
+++ includes/common.inc	12 Nov 2009 23:09:31 -0000
@@ -2007,9 +2007,13 @@ function drupal_load_stylesheet($file, $
 
     if ($_optimize) {
       // Perform some safe CSS optimizations.
+      $contents = preg_replace('{
+        (?<=\\\\\*/)([^/\*]+/\*)([^\*/]+\*/)  # Add a backslash also at the end ie-mac hack comment, so the next pass will not touch it.
+                                              # The added backshlash does not affect the effectiveness of the hack.
+        }x', '\1\\\\\2', $contents);
       $contents = preg_replace('<
-        \s*([@{}:;,]|\)\s|\s\()\s* |  # Remove whitespace around separators, but keep space around parentheses.
-        /\*([^*\\\\]|\*(?!/))+\*/     # Remove comments that are not CSS hacks.
+        \s*([@{}:;,]|\)\s|\s\()\s* |          # Remove whitespace around separators, but keep space around parentheses.
+        /\*[^*\\\\]*\*+([^/*][^*]*\*+)*/ |    # Remove comments that are not CSS hacks
         >x', '\1', $contents);
     }