patch 8.2.1485: Vim9: readdirex() expression doesn't accept bool Commit: https://github.com/vim/vim/commit/af8822ce085e3bd8edeb52cbb7306ddd42427d39 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 19 13:55:01 2020 +0200 patch 8.2.1485: Vim9: readdirex() expression doesn't accept bool Problem: Vim9: readdirex() expression doesn't accept bool. Solution: Accept both -1 and bool. (closes https://github.com/vim/vim/issues/6737)

" 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