Ticket #7728: sanitize_user.patch

functions-formatting.php

@@ -291 +291 @@
         // If strict, reduce to ASCII for max portability.
         if ( $strict )
                 $username = preg_replace('|[^a-z0-9 _.\-@]|i', '', $username);
+                
+        // Consolidate contiguous whitespace 
+        $username = preg_replace('|\s+|', ' ', $username);
 
         return apply_filters('sanitize_user', $username, $raw_username, $strict);
 }