commit https://github.com/vim/vim/commit/0ecbe33718b06a3771fd2c65b331c8c9504657d7 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 5 22:40:52 2016 +0100 patch 7.4.1497 Problem: Cursor drawing problem with GTK 3. Solution: Handle blinking differently. (Kazunobu Kuriyama)

" 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