commit https://github.com/vim/vim/commit/257095760732597983bdd026e791907b7980e295 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 26 20:41:16 2016 +0200 patch 7.4.2262 Problem: Fail to read register content from viminfo if it is 438 characters long. (John Chen) Solution: Adjust the check for line wrapping. (closes https://github.com/vim/vim/issues/1010)

" 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=