patch 8.2.1847: Vim9: using negative value for unsigned type Commit: https://github.com/vim/vim/commit/209f0208f7831c6ab8f3f1cab473cb21e7985fc3 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Oct 15 13:57:56 2020 +0200 patch 8.2.1847: Vim9: using negative value for unsigned type Problem: Vim9: using negative value for unsigned type. Solution: Use zero instead of -1.

" Vim filetype plugin
" Language:	Dockerfile
" Maintainer:   Honza Pokorny <http://honza.ca>
" Last Change:	2014 Aug 29

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

" Don't load another plugin for this buffer
let b:did_ftplugin = 1

let b:undo_ftplugin = "setl commentstring<"

setlocal commentstring=#\ %s