patch 8.2.2596: :doautocmd may confuse scripts listening to WinEnter Commit: https://github.com/vim/vim/commit/41cd80335cf318c15c8b0139f53ab5e8a02561ef Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 13 15:47:56 2021 +0100 patch 8.2.2596: :doautocmd may confuse scripts listening to WinEnter Problem: :doautocmd may confuse scripts listening to WinEnter. Solution: Do the current buffer last. (closes https://github.com/vim/vim/issues/7958)

" 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