commit https://github.com/vim/vim/commit/7ab6defcafe017a3ad58580a3e56dab705b1ed8b Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 5 22:51:13 2016 +0200 patch 7.4.2161 Problem: Expression test fails without conceal feature. Solution: Only check "conceal" with the conceal feature.

" 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