commit https://github.com/vim/vim/commit/ddf8d1c746ee081d15c9d7e0515f6ac43adbf363 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 20 11:22:54 2016 +0200 patch 7.4.1945 Problem: The Man plugin doesn't work that well. Solution: Use "g:ft_man_open_mode" to be able open man pages in vert split or separate tab. Set nomodifiable for buffer with man content. Add a test. (Andrey Starodubtsev, closes #873)

" Vim filetype plugin
" Language:      ART-IM and ART*Enterprise
" Maintainer:    Dorai Sitaram <ds26@gte.com>
" URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
" Last Change:   Apr 2, 2003

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif

run ftplugin/lisp.vim

setl lw-=if
setl lw+=def-art-fun,deffacts,defglobal,defrule,defschema,for,schema,while