patch 8.0.1024: folds lost when session file has a buffer in two windows commit https://github.com/vim/vim/commit/4bebc9a0565670b853d227f81a9a31eafdb47eed Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 30 21:07:38 2017 +0200 patch 8.0.1024: folds lost when session file has a buffer in two windows Problem: Manual folds are lost when a session file has the same buffer in two windows. (Jeansen) Solution: Use ":edit" only once. (Christian Brabandt, closes #1958)

" 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