commit https://github.com/vim/vim/commit/c6aa475a27e3ed1645446b014c32ebf68d005d49 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 7 15:39:43 2017 +0100 patch 8.0.0148: wrong indent in C preprocessor with line continuation Problem: When a C preprocessor statement has two line continuations the following line does not have the right indent. (Ken Takata) Solution: Add the indent of the previous continuation line. (Hirohito Higashi)

" 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