--- D:/command.inc.original	Tue Jul 06 15:17:22 2010
+++ D:/command.inc	Tue Jul 06 15:17:38 2010
@@ -504,7 +504,7 @@
 
       // User commands, specified by 'include' option
       if ($include = drush_get_option(array('i', 'include'), FALSE)) {
-        foreach (explode(":", $include) as $path) {
+        foreach (preg_split("/:(?!\\\)/", $include) as $path) {
           $searchpath[] = $path;
         }
       }