1 files changed, 6 insertions, 1 deletions
diff --git a/program/lib/Roundcube/rcube_addressbook.php b/program/lib/Roundcube/rcube_addressbook.php
index 5fbcb72af..84bd4bfcd 100644
--- a/program/lib/Roundcube/rcube_addressbook.php
+++ b/program/lib/Roundcube/rcube_addressbook.php
@@ -309,9 +309,14 @@ abstract class rcube_addressbook
      * List all active contact groups of this source
      *
      * @param string  Optional search string to match group name
+     * @param int     Matching mode:
+     *                0 - partial (*abc*),
+     *                1 - strict (=),
+     *                2 - prefix (abc*)
+     *
      * @return array  Indexed list of contact groups, each a hash array
      */
-    function list_groups($search = null)
+    function list_groups($search = null, $mode = 0)
     {
         /* empty for address books don't supporting groups */
         return array();