commit https://github.com/vim/vim/commit/2db5c3b3ceeaded7fb5a64dc5cb22b0cb95b78a1 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 16 22:49:34 2016 +0100 patch 7.4.1112 Problem: When using ":next" with an illegal file name no error is reported. Solution: Give an error message.

" For Yiddish capitals should not be checked.  But only change the
" 'spellcapcheck' option when it is not at its default value.
let s:spc = &l:spc
setlocal spc&
if s:spc == &l:spc
  setlocal spc=
else
  let &l:spc = s:spc
endif
unlet s:spc