patch 8.0.1632: in a terminal dump NUL and space are different commit https://github.com/vim/vim/commit/47015b80a0b0ff74ba7cb597d5959604b6e9a511 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Mar 23 22:10:34 2018 +0100 patch 8.0.1632: in a terminal dump NUL and space are different Problem: In a terminal dump NUL and space considered are different, although they are displayed the same. Solution: When encountering NUL handle it like space.

" Vim filetype plugin file
" Language:             Prolog
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2008-07-09

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

let s:cpo_save = &cpo
set cpo&vim

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

setlocal comments=s1:/*,mb:*,ex:*/,:% commentstring=%\ %s
setlocal formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save