commit https://github.com/vim/vim/commit/75464dc434c43efac60e8bfd9bec2a8b736407e9 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jul 2 20:27:50 2016 +0200 patch 7.4.1983 Problem: farsi.c and arabic.c are included in a strange way. Solution: Build them like other files.

" Vim syntax file
" Language:  systemd.unit(5)

if !exists('b:current_syntax')
  " Looks a lot like dosini files.
  runtime! syntax/dosini.vim
  let b:current_syntax = 'systemd'
endif