patch 9.0.1604: errors from the codestyle test are a bit confusing Commit: https://github.com/vim/vim/commit/abc8130d6a680026ffb2cc36b74d239e88f775d6 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 4 16:55:27 2023 +0100 patch 9.0.1604: errors from the codestyle test are a bit confusing Problem: Errors from the codestyle test are a bit confusing. Solution: Use assert_report() with a clearer message. Avoid a warning for an existing swap file.

" Vim indent file
" Language:	Mail
" Maintainer:	Bram Moolenaar
" Last Change:	2021 Sep 26

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=

let b:undo_indent = "setl ai< cin< inde< si<"