patch 9.0.1392: using NULL pointer with nested :open command Commit: https://github.com/vim/vim/commit/7ac5023a5f1a37baafbe1043645f97ba3443d9f6 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Mar 7 21:05:04 2023 +0000 patch 9.0.1392: using NULL pointer with nested :open command Problem: Using NULL pointer with nested :open command. Solution: Check that ccline.cmdbuff is not NULL.

" Vim filetype plugin
" Language:    crontab
" Maintainer:  Keith Smiley <keithbsmiley@gmail.com>
" Last Change: 2022 Sep 11

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

" Don't load another plugin for this buffer
let b:did_ftplugin = 1

let b:undo_ftplugin = "setl commentstring<"

setlocal commentstring=#\ %s