commit https://github.com/vim/vim/commit/c79d6aa01d86cd98cffddc80825c1c600e833bbf Author: Bram Moolenaar <Bram@vim.org> Date: Sun Sep 25 22:27:37 2016 +0200 patch 8.0.0013 Problem: Missing comma in list. Solution: Add the comma.

" 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