patch 8.0.1750: crash when clearing loccation list in autocommand commit https://github.com/vim/vim/commit/3b9474b4ad4d85b5396f7f641b436f193dc9d486 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Apr 23 21:29:48 2018 +0200 patch 8.0.1750: crash when clearing loccation list in autocommand Problem: Crash when clearing loccation list in autocommand. Solution: Check if "qi" equals "ql_info". (Yegappan Lakshmanan)

" 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