patch 8.0.0177: BufEnter autocommand not fired for a directory commit https://github.com/vim/vim/commit/e13b9afe1283f5ae43232b5992372a0eb570666c Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 13 22:01:02 2017 +0100 patch 8.0.0177: BufEnter autocommand not fired for a directory Problem: When opening a buffer on a directory and inside a try/catch then the BufEnter event is not triggered. Solution: Return NOTDONE from readfile() for a directory and deal with the three possible return values. (Justin M. Keyes, closes #1375, closes #1353)

" Vim filetype plugin file
" Language:         Prolog
" 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