commit https://github.com/vim/vim/commit/0e4c1de5560c7f8b4cae539ec8cff0949daba3fc Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 7 21:40:38 2016 +0200 patch 7.4.1717 Problem: Leaking memory when opening a channel fails. Solution: Unreference partials in job options.

" 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