patch 8.2.3196: Vim9: bool expression with numbers only fails at runtime Commit: https://github.com/vim/vim/commit/05bd9785fd0fd0102ab64554307bff0ec0ae34c1 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 21 21:37:28 2021 +0200 patch 8.2.3196: Vim9: bool expression with numbers only fails at runtime Problem: Vim9: bool expression with numbers only fails at runtime. Solution: Check constant to be bool at compile time. (closes https://github.com/vim/vim/issues/8603)

" Vim filetype plugin file
" Language:	groovy
" Maintainer:	Justin M. Keyes <justinkz@gmail.com>
" Last Change:	2016 May 22

if exists('b:did_ftplugin')
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo-=C

let b:undo_ftplugin = 'setlocal commentstring<'

setlocal commentstring=//%s

let &cpo = s:cpo_save
unlet s:cpo_save