patch 8.2.2664: Vim9: not enough function arguments checked for string Commit: https://github.com/vim/vim/commit/32105ae88f3aa6a6af30336f0bc9f8eb81292cd7 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 27 18:59:25 2021 +0100 patch 8.2.2664: Vim9: not enough function arguments checked for string Problem: Vim9: not enough function arguments checked for string. Solution: Check in balloon functions. Refactor function arguments.

" 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