patch 8.1.1338: hang when concealing the '>' shown for half of wide char commit https://github.com/vim/vim/commit/0ebe12be86d9f79bfa833306a0302a68a0f4fc30 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 17 12:31:44 2019 +0200 patch 8.1.1338: hang when concealing the '>' shown for half of wide char Problem: Hang when concealing the '>' shown for a wide char that doesn't fit in the last cell. Solution: Put back the pointer when the '>' is not going to be displayed. (closes #4377)

" 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