patch 8.2.1931: Vim9: arguments of extend() not checked at compile time Commit: https://github.com/vim/vim/commit/fbcbffe1ad327f4f0da518abfd5fd7be7fec22b5 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 31 19:33:38 2020 +0100 patch 8.2.1931: Vim9: arguments of extend() not checked at compile time Problem: Vim9: arguments of extend() not checked at compile time. Solution: Add argument type checking for extend().

" 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=\(*%s*\)