? common.inc-45.patch
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.1005
diff -u -p -r1.1005 common.inc
--- includes/common.inc	3 Oct 2009 19:16:03 -0000	1.1005
+++ includes/common.inc	4 Oct 2009 10:40:33 -0000
@@ -3060,11 +3060,14 @@ function drupal_load_stylesheet_content(
 
   if ($optimize) {
     // Perform some safe CSS optimizations.
+    $contents = preg_replace('{
+      (?<=\\\\\*/)([^/\*]+/\*)([^\*/]+\*/) # Add a backslash also at the end hack comment, so the next pass will not touch it
+      }x', '\1\\\\\2', $contents);
     $contents = preg_replace('<
-      \s*([@{}:;,]|\)\s|\s\()\s* |  # Remove whitespace around separators, but keep space around parentheses.
-      /\*([^*\\\\]|\*(?!/))+\*/ |   # Remove comments that are not CSS hacks.
-      [\n\r]                        # Remove line breaks.
-      >x', '\1', $contents);
+      \s*([@{}:;,]|\)\s|\s\()\s* |         # Remove whitespace around separators, but keep space around parentheses.
+      /\*[^*\\\\]*\*+([^/*][^*]*\*+)*/ |   # Remove comments that are not CSS hacks.
+      [\n\r]                               # Remove line breaks.
+      >x', '\1', $contents);
   }
 
   // Replaces @import commands with the actual stylesheet content.