patch 8.2.5016: access before start of text with a put command Commit: https://github.com/vim/vim/commit/2a585c85013be22f59f184d49612074fd9b115d7 Author: Bram Moolenaar <Bram@vim.org> Date: Wed May 25 15:15:38 2022 +0100 patch 8.2.5016: access before start of text with a put command Problem: Access before start of text with a put command. Solution: Check the length is more than zero.

" 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