patch 9.0.0901: setting w_leftcol and handling side effects is confusing Commit: https://github.com/vim/vim/commit/0c34d562647f029faca40f7733ccfb7b5377672b Author: Bram Moolenaar <Bram@vim.org> Date: Fri Nov 18 14:07:20 2022 +0000 patch 9.0.0901: setting w_leftcol and handling side effects is confusing Problem: Setting w_leftcol and handling side effects is confusing. Solution: Use a function to set w_leftcol() and handle side effects.

" 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=\(*%s*\)