commit https://github.com/vim/vim/commit/fdd6ce4a2f922afac7bd719a00228dbd8539b9c4 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 28 22:21:38 2016 +0100 patch 7.4.1458 Problem: When a JSON channel has a callback it may never be cleared. Solution: Do not write "DETACH" into a JS or JSON channel.

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