Index: modules/locale/locale.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/locale/locale.module,v
retrieving revision 1.264
diff -u -p -r1.264 locale.module
--- modules/locale/locale.module	16 Oct 2009 02:04:42 -0000	1.264
+++ modules/locale/locale.module	16 Oct 2009 03:58:55 -0000
@@ -468,7 +468,7 @@ function locale_theme() {
  */
 function locale_field_attach_view_alter(&$output, $context) {
   // In locale_field_fallback_view() we might call field_attach_view(). The
-  // static variable avoids unnecessary recursion. 
+  // static variable avoids unnecessary recursion.
   static $recursion;
 
   // Do not apply fallback rules if disabled or if Locale is not registered as a
@@ -1067,3 +1067,12 @@ function locale_date_format_reset_form_s
   $form_state['redirect'] = 'admin/config/regional/date-time/locale';
 }
 
+/**
+ * Implement hook_query_TAG_alter().
+ *
+ * Adds a filter by language for comments.
+ */
+function locale_query_comment_filter_alter(QueryAlterableInterface $query) {
+  global $language;
+  $query->where("language = :name", array(':name' => $language->language));
+}