patch 8.2.4930: interpolated string expression requires escaping Commit: https://github.com/vim/vim/commit/0abc2871c105882ed1c1effb9a7757fad8a395bd Author: Bram Moolenaar <Bram@vim.org> Date: Tue May 10 13:24:30 2022 +0100 patch 8.2.4930: interpolated string expression requires escaping Problem: Interpolated string expression requires escaping. Solution: Do not require escaping in the expression.

" 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<"