patch 8.1.1082: "Conceal" match is mixed up with 'hlsearch' match. commit https://github.com/vim/vim/commit/ab62c19ea034d76632bbbf4265a9fc17e7508541 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 30 16:39:05 2019 +0100 patch 8.1.1082: "Conceal" match is mixed up with 'hlsearch' match. Problem: "Conceal" match is mixed up with 'hlsearch' match. Solution: Check that a match is found, not a 'hlsearch' item. (Andy Massimino, closes #4073)

" 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$*\ \"%:p\"\ -o\ \"%:p:r.$*\"