patch 8.2.3117: Vim9: type not properly checked in for loop Commit: https://github.com/vim/vim/commit/efc5db5215b4efc424b2de34613525d729a05c93 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 7 21:21:30 2021 +0200 patch 8.2.3117: Vim9: type not properly checked in for loop Problem: Vim9: type not properly checked in for loop. Solution: Have items() return a list of lists. Add runtime type checks. (closes #8515)

" 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