Fix confusing intersect/filter methods naming/behaviour.

Removed rcube_result_index::intersect() method.
Changed rcube_result_index::filter() to filter in the same way as
rcube_result_thread::filter(), which means it actually does array_intersect().
Added tests scripts for rcube_result_index class.

1 files changed, 1 insertions, 1 deletions

diff --git a/program/lib/Roundcube/rcube_result_thread.php b/program/lib/Roundcube/rcube_result_thread.php
index c7f21db53..ceaaf59a6 100644
--- a/program/lib/Roundcube/rcube_result_thread.php
+++ b/program/lib/Roundcube/rcube_result_thread.php
@@ -453,7 +453,7 @@ class rcube_result_thread
 
         // when sorting search result it's good to make the index smaller
         if ($index->count() != $this->count_messages()) {
-            $index->intersect($this->get());
+            $index->filter($this->get());
         }
 
         $result  = array_fill_keys($index->get(), null);