patch 8.1.1362: code and data in tests can be hard to read commit https://github.com/vim/vim/commit/c79745a82faeb5a6058e915ca49a4c69fa60ea01 Author: Bram Moolenaar <Bram@vim.org> Date: Mon May 20 22:12:34 2019 +0200 patch 8.1.1362: code and data in tests can be hard to read Problem: Code and data in tests can be hard to read. Solution: Use the new heredoc style. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/4400)

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