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 script-local function.     vim: set ft=vim :

STARTTEST
:so small.vim
:"
:set nocp viminfo+=nviminfo
:/^start:/+1,/^end:/-1w! Xtest.vim
:source Xtest.vim
_x
:$-1,$wq! test.out
ENDTEST

start:
fun <SID>DoLast()
  call append(line('$'), "last line")
endfun
fun s:DoNothing()
  call append(line('$'), "nothing line")
endfun
nnoremap <buffer> _x	:call <SID>DoNothing()<bar>call <SID>DoLast()<bar>delfunc <SID>DoNothing<bar>delfunc <SID>DoLast<cr>
end: