patch 8.2.2772: problems when restoring 'runtimepath' from a session file Commit: https://github.com/vim/vim/commit/635bd60804966803490287e97460ecdc91d5fe0a Author: Bram Moolenaar <Bram@vim.org> Date: Fri Apr 16 19:58:22 2021 +0200 patch 8.2.2772: problems when restoring 'runtimepath' from a session file Problem: Problems when restoring 'runtimepath' from a session file. Solution: Add the "skiprtp" item in 'sessionoptions'.

" Vim filetype plugin file
" Language:             m4
" 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=:#,:dnl commentstring=dnl\ %s
setlocal formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save