commit https://github.com/vim/vim/commit/451f849fd6282a4facd4f0f58af62837443fb5a6 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 14 17:16:22 2016 +0200 patch 7.4.1735 Problem: It is not possible to only see part of the message history. It is not possible to clear messages. Solution: Add a count to ":messages" and a clear argument. (Yasuhiro Matsumoto)

--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -17,6 +17,7 @@ source test_join.vim
 source test_lispwords.vim
 source test_matchstrpos.vim
 source test_menu.vim
+source test_messages.vim
 source test_partial.vim
 source test_reltime.vim
 source test_searchpos.vim