patch 8.2.3650: Vim9: for loop variable can be a list member Commit: https://github.com/vim/vim/commit/3b3755fe19e9ded2a1c45f14b2c6fa065bcaf2c6 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Nov 22 20:10:18 2021 +0000 patch 8.2.3650: Vim9: for loop variable can be a list member Problem: Vim9: for loop variable can be a list member. Solution: Check for valid variable name. (closes https://github.com/vim/vim/issues/9179)

" Vim filetype plugin file
" Language:	Mathematica
" Maintainer:	Ian Ford <ianf@wolfram.com>
" Last Change:	22 January 2019

" 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 = "setlocal commentstring<"

setlocal commentstring=\(*%s*\)