commit https://github.com/vim/vim/commit/013806229a1e15480592f6bc8453130685ec750b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Dec 29 16:04:42 2015 +0100 patch 7.4.992 Problem: Makefiles for MS-Windows in src/po are outdated. Solution: Make them work. (Ken Takata, Taro Muraoka)

" 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