--- menu_breadcrumb.module_6.x-1.x-dev	2008-02-21 07:56:34.000000000 +1300
+++ menu_breadcrumb.module	2009-08-04 11:28:02.047000000 +1200
@@ -75,10 +75,20 @@ function menu_breadcrumb_disable() {
  */
 function menu_breadcrumb_init() {
   if (variable_get('menu_breadcrumb_determine_menu', 1)) {
+    $menu_list = variable_get('menu_breadcrumb_menus', array('admin_menu', 'devel'));
+    $filter = variable_get('menu_breadcrumb_menus_filter', 'black_list');
     $menu_item = menu_get_item();
-    $menu_link = menu_link_load(db_result(db_query("SELECT mlid FROM {menu_links} WHERE link_path = '%s'", $menu_item['href'])));
-    $use_menu = $menu_link['menu_name'];
-    menu_set_active_menu_name($use_menu);
+    $result = db_query("SELECT mlid, menu_name FROM {menu_links} WHERE link_path = '%s'", $menu_item['href']);
+    while ($menu_link = db_fetch_array($result)) {
+      // @see http://www.php.net/manual/en/function.in-array.php#86695
+      $menu_in_list = in_array($menu_link['menu_name'], $menu_list, TRUE);
+      if ($filter == 'white_list' && $menu_in_list
+          or $filter == 'black_list' && !$menu_in_list)
+      {
+        menu_set_active_menu_name($menu_link['menu_name']);
+        break;
+      }
+    }
   }
 
   $breadcrumb = drupal_get_breadcrumb();
@@ -134,5 +144,23 @@ function menu_breadcrumb_admin_settings_
     '#default_value' => variable_get('menu_breadcrumb_hide_on_single_item', 0),
   );
 
+  $form['menu_breadcrumb_menus'] = array(
+    '#type' => 'checkboxes',
+    '#title' => t('Menu list'),
+    '#description' => t('Menus marked here will be used or ignored by menu breadcrumb, according to the filter below.'),
+    '#options' => drupal_map_assoc(menu_get_names()),
+    '#default_value' => variable_get('menu_breadcrumb_menus', array('admin_menu', 'devel')),
+  );
+
+  $form['menu_breadcrumb_menus_filter'] = array(
+    '#type' => 'radios',
+    '#title' => t('Menu filter'),
+    '#options' => array(
+      'black_list' => t('Menu items will never be chosen from the above selected menus (black list).'),
+      'white_list' => t('Menu items will only be chosen from the above selected menus (white list).'),
+    ),
+    '#default_value' => variable_get('menu_breadcrumb_menus_filter', 'black_list'),
+  );
+
   return system_settings_form($form);
 }
\ No newline at end of file