commit https://github.com/vim/vim/commit/5e1e6d265d26ee2952c4a018a5ff72c950d2d700 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 2 17:26:00 2017 +0100 patch 8.0.0139 Problem: Warning for unused argument. Solution: Add UNUSED.

" For Hebrew 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