patch 8.2.0185: Vim9 script: cannot use "if has()" to skip lines Commit: https://github.com/vim/vim/commit/a259d8d30bc289764925fc42db1dbe774f0bb3f8 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 31 20:10:50 2020 +0100 patch 8.2.0185: Vim9 script: cannot use "if has()" to skip lines Problem: Vim9 script: cannot use "if has()" to skip lines. Solution: Evaluate constant expression at runtime.

" 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