commit https://github.com/vim/vim/commit/9ccfebddc3ff2a3c2853cf706fd4c26f639bf381 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jul 19 16:39:08 2016 +0200 patch 7.4.2069 Problem: spell.c is too big. Solution: Split it in spell file handling and spell checking.

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