patch 8.2.2654: Vim9: getting a character from a string can be slow Commit: https://github.com/vim/vim/commit/ff871400461183010d3ab98f3f326e4bb75e221b Author: Bram Moolenaar <Bram@vim.org> Date: Fri Mar 26 13:34:05 2021 +0100 patch 8.2.2654: Vim9: getting a character from a string can be slow Problem: Vim9: getting a character from a string can be slow. Solution: Avoid a function call to get the character byte size. (https://github.com/vim/vim/issues/8000)

" 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