patch 8.0.0983: unnecessary check for NULL pointer commit https://github.com/vim/vim/commit/3f9a1ff141412e9e85f7dff47d02946cb9be9228 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Aug 21 22:06:02 2017 +0200 patch 8.0.0983: unnecessary check for NULL pointer Problem: Unnecessary check for NULL pointer. Solution: Remove the NULL check in dialog_changed(), it already happens in dialog_msg(). (Ken Takata)

" 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