patch 8.1.1812: reading a truncted undo file hangs Vim commit https://github.com/vim/vim/commit/fb06d767a8d76eead5391302fc88115d6e3879d8 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 4 18:55:35 2019 +0200 patch 8.1.1812: reading a truncted undo file hangs Vim Problem: Reading a truncted undo file hangs Vim. Solution: Check for reading EOF. (closes https://github.com/vim/vim/issues/4769)

" Vim filetype plugin
" Language:	Java properties file
" Maintainer:	David Bürgin <676c7473@gmail.com>
" Last Change:	2013-11-19

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

setlocal formatoptions-=t
setlocal comments=:#,:!
setlocal commentstring=#\ %s

let b:undo_ftplugin = "setl cms< com< fo<"