patch 8.2.1968: Vim9: has() assumes a feature does not change dynamically Commit: https://github.com/vim/vim/commit/8cebd43e9774d2624af43ee5b86939886f2ba490 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Nov 8 12:49:47 2020 +0100 patch 8.2.1968: Vim9: has() assumes a feature does not change dynamically Problem: Vim9: has() assumes a feature does not change dynamically. Solution: Check whether a feature may change dynamically. (closes https://github.com/vim/vim/issues/7265)

" Vim compiler file
" Compiler:     ATT dot
" Maintainer:	Marcos Macedo <bar4ka@bol.com.br>
" Last Change:	2004 May 16

if exists("current_compiler")
  finish
endif
let current_compiler = "dot"

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

CompilerSet makeprg=dot\ -T$*\ \"%:p\"\ -o\ \"%:p:r.$*\"