patch 9.0.1378: illegal memory access when using virtual editing Commit: https://github.com/vim/vim/commit/c99cbf8f289bdda5d4a77d7ec415850a520330ba Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 4 14:13:10 2023 +0000 patch 9.0.1378: illegal memory access when using virtual editing Problem: Illegal memory access when using virtual editing. Solution: Make sure "startspaces" is not negative.

" 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