patch 8.1.1142: no test for dragging the window separators with the mouse commit https://github.com/vim/vim/commit/3fb01a53c685d8d7e7bd83c33500de80aed0d7c8 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Apr 9 21:52:02 2019 +0200 patch 8.1.1142: no test for dragging the window separators with the mouse Problem: No test for dragging the window separators with the mouse. Solution: Add a test. (Dominique Pelle, closes https://github.com/vim/vim/issues/4226)

" 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