patch 8.2.2846: Vim9: "echo Func()" does not give an error for using void Commit: https://github.com/vim/vim/commit/68db996b621b98066fb7ab7028ed5c6aaa3954a8 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 9 23:19:22 2021 +0200 patch 8.2.2846: Vim9: "echo Func()" does not give an error for using void Problem: Vim9: "echo Func()" does not give an error for a function without a return value. Solution: Give an error. Be more specific about why a value is invalid.

" Vim filetype plugin
" Language:	git config file
" Maintainer:	Tim Pope <vimNOSPAM@tpope.org>
" Last Change:	2009 Dec 24

" Only do this when not done yet for this buffer
if (exists("b:did_ftplugin"))
  finish
endif
let b:did_ftplugin = 1

setlocal formatoptions-=t formatoptions+=croql
setlocal comments=:#,:; commentstring=;\ %s

let b:undo_ftplugin = "setl fo< com< cms<"