patch 8.2.4279: Vim9: cannot change item type with map() after range() Commit: https://github.com/vim/vim/commit/8133018f50bc447570825801e93d5ed67e8dac90 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Feb 1 12:11:58 2022 +0000 patch 8.2.4279: Vim9: cannot change item type with map() after range() Problem: Vim9: cannot change item type with map() after range(). Solution: Split the return type in current type and declared type. (closes #9665)

" 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