commit https://github.com/vim/vim/commit/82faa259cc42379f2a17d598a2a39d14048685b0 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 4 20:14:07 2016 +0200 patch 7.4.1896 Problem: Invoking mark_adjust() when adding a new line below the last line is pointless. Solution: Skip calling mark_adjust() when appending below the last line.

" 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