patch 8.2.4643: Vim9: variable may be locked unintentionally Commit: https://github.com/vim/vim/commit/24565cf27bc28cbd73f10e5ddf1e4ef53038a426 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Mar 28 18:16:52 2022 +0100 patch 8.2.4643: Vim9: variable may be locked unintentionally Problem: Vim9: variable may be locked unintentionally. Solution: Clear "v_lock". (closes https://github.com/vim/vim/issues/10036)

" Simplistic way to make spaces and Tabs visible

" This can be added to an already active syntax.

syn match Space " "
syn match Tab "\t"
if &background == "dark"
  hi def Space ctermbg=darkred guibg=#500000
  hi def Tab ctermbg=darkgreen guibg=#003000
else
  hi def Space ctermbg=lightred guibg=#ffd0d0
  hi def Tab ctermbg=lightgreen guibg=#d0ffd0
endif