patch 8.0.0212: buffer for key name may be too small commit https://github.com/vim/vim/commit/423977d3cebac2be1158b1d11da60fe96db4b750 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 22 15:05:12 2017 +0100 patch 8.0.0212: buffer for key name may be too small Problem: The buffer used to store a key name theoreticaly could be too small. (Coverity) Solution: Count all possible modifier characters. Add a check for the length just in case.

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