patch 8.2.3065: Vim9: error when sourcing script twice and reusing function Commit: https://github.com/vim/vim/commit/577dc93da9ec78684576bff71328d40f24bd6dd8 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 27 15:35:40 2021 +0200 patch 8.2.3065: Vim9: error when sourcing script twice and reusing function Problem: Vim9: error when sourcing script twice and reusing a function name. Solution: Check if the function is dead. (closes #8463)

" 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