patch 8.2.3476: renaming a buffer on startup may cause using freed memory Commit: https://github.com/vim/vim/commit/d3710cf01ef6ab1b2f233866ff01dab76686f642 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Oct 4 23:13:13 2021 +0100 patch 8.2.3476: renaming a buffer on startup may cause using freed memory Problem: Renaming a buffer on startup may cause using freed memory. Solution: Check if the buffer is used in a window. (closes https://github.com/vim/vim/issues/8955)

" Vim syntax file
" Language:	HTML with Cheetah tags
" Maintainer:	Max Ischenko <mfi@ukr.net>
" Last Change: 2003-05-11

" quit when a syntax file was already loaded
if exists("b:current_syntax")
  finish
endif

if !exists("main_syntax")
  let main_syntax = 'html'
endif

runtime! syntax/cheetah.vim
runtime! syntax/html.vim
unlet b:current_syntax

syntax cluster htmlPreproc add=cheetahPlaceHolder
syntax cluster htmlString add=cheetahPlaceHolder

let b:current_syntax = "htmlcheetah"