patch 9.0.1436: cannot compare a typed variable with v:none Commit: https://github.com/vim/vim/commit/2ed57ac3675624b9d943d7753f48855e5dbebdbb Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 1 22:05:38 2023 +0100 patch 9.0.1436: cannot compare a typed variable with v:none Problem: Cannot compare a typed variable with v:none. Solution: Allow for "x is v:none" and "x isnot v:none". (issue https://github.com/vim/vim/issues/12194)

vim9script

# Vim support file to switch off loading plugins for file types
#
# Maintainer:	Bram Moolenaar <Bram@vim.org>
# Last Change:	2022 Feb 09

if exists("g:did_load_ftplugin")
  unlet g:did_load_ftplugin
endif

# Remove all autocommands in the filetypeplugin group, if any exist.
if exists("#filetypeplugin")
  silent! au! filetypeplugin *
endif