patch 9.0.1995: Invalid memory access with empty 'foldexpr' Commit: https://github.com/vim/vim/commit/a991ce9c083bb8c02b1b1ec34ed35728197050f3 Author: zeertzjq <zeertzjq@outlook.com> Date: Fri Oct 6 19:16:36 2023 +0200 patch 9.0.1995: Invalid memory access with empty 'foldexpr' Problem: Invalid memory access when 'foldexpr' returns empty string. Solution: Check for NUL. closes: #13293 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: zeertzjq <zeertzjq@outlook.com>

" Vim filetype plugin file
" Language:             Configuration File (ini file) for MS-DOS/MS Windows
" 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=:; commentstring=;\ %s formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save