patch 8.2.2819: finishing an abbreviation with multi-byte char may not work Commit: https://github.com/vim/vim/commit/4934ed34c3e2090d1963c89c629cd3ce81d3ecd1 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Apr 30 19:43:11 2021 +0200 patch 8.2.2819: finishing an abbreviation with multi-byte char may not work Problem: Finishing an abbreviation with a multi-byte char may not work. Solution: Escape K_SPECIAL in the typed character. (closes https://github.com/vim/vim/issues/8160)

" 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