patch 8.1.1343: text properties not adjusted for Visual block mode delete commit https://github.com/vim/vim/commit/8055d17388736421d875dd4933c4c93d49a2ab58 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 17 22:57:26 2019 +0200 patch 8.1.1343: text properties not adjusted for Visual block mode delete Problem: Text properties not adjusted for Visual block mode delete. Solution: Call adjust_prop_columns(). (closes https://github.com/vim/vim/issues/4384)

" 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