commit https://github.com/vim/vim/commit/b07a82b6d5f904ed3e623e775c3458adb1cc0a3e Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 3 20:08:56 2016 +0200 patch 7.4.2319 Problem: No way for a system wide vimrc to stop loading defaults.vim. (Christian Hesse) Solution: Bail out of defaults.vim if skip_defaults_vim was set.

" 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