Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.352
diff -u -p -r1.352 menu.inc
--- includes/menu.inc	11 Oct 2009 19:39:30 -0000	1.352
+++ includes/menu.inc	12 Oct 2009 04:21:00 -0000
@@ -1357,7 +1357,19 @@ function theme_menu_link(array $variable
  */
 function theme_menu_local_task($variables) {
   $link = $variables['element']['#link'];
-  return '<li' . (!empty($variables['element']['#active']) ? ' class="active"' : '') . '>' . l($link['title'], $link['href'], $link['localized_options']) . "</li>\n";
+  $link_text = $link['title'];
+
+  if (!empty($variables['element']['#active'])) {
+    // Add text to indicate active tab for non-visual users.
+    $active = '<span class="element-invisible">' . t('(active tab)') . '</span>';
+    if (empty($link['localized_options']['html'])) {
+      $link['title'] = check_plain($link['title']);
+    }
+    $link['localized_options']['html'] = TRUE;
+    $link_text = t('!local-task-title!active', array('!local-task-title' => $link['title'], '!active' => $active));
+  }
+
+  return '<li' . (!empty($variables['element']['#active']) ? ' class="active"' : '') . '>' . l($link_text, $link['href'], $link['localized_options']) . "</li>\n";
 }
 
 /**