patch 8.2.0765: In the GUI can't use all the modifiers. Commit: https://github.com/vim/vim/commit/fd615a3c901f59abddca27c6a09940be552c0f4d Author: Bram Moolenaar <Bram@vim.org> Date: Sat May 16 14:01:51 2020 +0200 patch 8.2.0765: In the GUI can't use all the modifiers. Problem: In the GUI can't use all the modifiers. (Andri M?ll) Solution: Do not apply Alt/Meta early, do it later like with the terminal. Avoid the Motif test from crashing.

" 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