patch 8.0.0914: highlight attributes are always combined commit https://github.com/vim/vim/commit/0cd2a94a4030f6bd12eaec44db92db108e33c913 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 12 15:12:30 2017 +0200 patch 8.0.0914: highlight attributes are always combined Problem: Highlight attributes are always combined. Solution: Add the 'nocombine' value to replace attributes instead of combining them. (scauligi, closes #1963)

" 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