patch 7.4.2244
Problem:    Adding pattern to ":oldfiles" is not a generic solution.
Solution:   Add the ":filter /pat/ cmd" command modifier.  Only works for some
            commands right now.
diff --git a/src/testdir/test_alot.vim b/src/testdir/test_alot.vim
index b89d4b0..f8804e0 100644
--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -13,6 +13,7 @@
 source test_feedkeys.vim
 source test_fnamemodify.vim
 source test_file_perm.vim
+source test_filter_cmd.vim
 source test_filter_map.vim
 source test_glob2regpat.vim
 source test_goto.vim