patch 8.2.1854: Vim9: crash when throwing exception for NULL string Commit: https://github.com/vim/vim/commit/1e021e63c565bbb30783a557b4e883cc27f56403 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Oct 16 20:25:23 2020 +0200 patch 8.2.1854: Vim9: crash when throwing exception for NULL string Problem: Vim9: crash when throwing exception for NULL string. (Dhiraj Mishra) Solution: Handle NULL string like empty string. (closes #7139)

" 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