commit https://github.com/vim/vim/commit/ffec3c53496d49668669deabc0724ec78e2274fd Author: Bram Moolenaar <Bram@vim.org> Date: Wed Mar 23 20:55:42 2016 +0100 patch 7.4.1640 Problem: Crash when an autocommand changes a quickfix list. (Dominique) Solution: Check wether an entry is still valid. (Yegappan Lakshmanan, Hirohito Higashi)

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