patch 8.1.0632: using sign group names is inefficient commit https://github.com/vim/vim/commit/7a2d9892b7158edf8dc48e9bcaaae70a40787b37 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Dec 24 20:23:49 2018 +0100 patch 8.1.0632: using sign group names is inefficient Problem: Using sign group names is inefficient. Solution: Store group names in a hash table and use a reference to them. Also remove unnecessary use of ":exe" from the tests. (Yegappan Lakshmanan, closes #3715)

" 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=