commit https://github.com/vim/vim/commit/21decdd3e6d5ce3469a3c2743de1f4aada388d8c Author: Bram Moolenaar <Bram@vim.org> Date: Fri Apr 22 10:00:58 2016 +0200 patch 7.4.1771 Problem: Warning for unused variable. Solution: Add #ifdef. (John Marriott)

" 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