commit https://github.com/vim/vim/commit/065ee9aebf9abe08ae8c0dba7d05cbdcc423c8e0 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 15 20:53:38 2016 +0100 patch 7.4.1097 Problem: Looking up the alloc ID for tests fails. Solution: Fix the line computation. Use assert_fails() for unlet test.

Test for search('multi-byte char', 'bce')

STARTTEST
:source small.vim
:source mbyte.vim
:set encoding=utf-8
:/^Test bce:/+1
:$put =search('Ａ', 'bce', line('.'))
:1;/^Results:/,$wq! test.out
ENDTEST

Results:

Test bce:
Ａ