Ticket #10440: is_active_sidebar_names.diff

wp-includes/

@@ -933 +933 @@
  * @param mixed $index, sidebar name, id or number to check.
  * @return bool true if the sidebar is in use, false otherwise.
  */
 function is_active_sidebar( $index ) {
-        $index = ( is_int($index) ) ? "sidebar-$index" : sanitize_title($index);
+  global $wp_registered_sidebars;
+        if ( is_int($index) ) {
+                $index = "sidebar-$index";
+        } else {
+                $index = sanitize_title($index);
+                foreach ( (array) $wp_registered_sidebars as $key => $value ) {
+                        if ( sanitize_title($value['name']) == $index ) {
+                                $index = $key;
+                                break;
+                        }
+                }
+        }
         $sidebars_widgets = wp_get_sidebars_widgets();
         if ( isset($sidebars_widgets[$index]) && !empty($sidebars_widgets[$index]) )
                 return true;