patch 9.0.1356: cannot cancel "gr" with Esc Commit: https://github.com/vim/vim/commit/4f026ea9f1ad9db262f0dba522768c84e5ae37b4 Author: zeertzjq <zeertzjq@outlook.com> Date: Sun Feb 26 14:47:24 2023 +0000 patch 9.0.1356: cannot cancel "gr" with Esc Problem: Cannot cancel "gr" with Esc. Solution: Make "gr<Esc>" do nothing. (closes https://github.com/vim/vim/issues/12064)

" 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