commit https://github.com/vim/vim/commit/01688ad545ff0809ddad5c8fa6b149dc5d67312b Author: Bram Moolenaar <Bram@vim.org> Date: Thu Oct 27 20:00:07 2016 +0200 patch 8.0.0050 Problem: An exiting job is detected with a large latency. Solution: Check for pending job more often. (Ozaki Kiichi) Change the double loop in mch_inchar() into one.

" 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