commit https://github.com/vim/vim/commit/49c39ff678e2ba9f7dc280b25368e12084a610cf Author: Bram Moolenaar <Bram@vim.org> Date: Thu Feb 25 21:21:52 2016 +0100 patch 7.4.1419 Problem: Tests slowed down because of the "not a terminal" warning. Solution: Add the --not-a-term command line argument.

" Vim indent file
" Language:	Mail
" Maintainer:	Bram Moolenaar
" Last Change:	2009 Jun 03

if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

" What works best is auto-indenting, disable other indenting.
" For formatting see the ftplugin.
setlocal autoindent nosmartindent nocindent indentexpr=