patch 8.2.3734: Vim9: crash when no pattern match found Commit: https://github.com/vim/vim/commit/01a4dcbceefa99696bd1ef8631c3f7ce9f6e0cc2 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Dec 4 13:15:10 2021 +0000 patch 8.2.3734: Vim9: crash when no pattern match found Problem: Vim9: crash when no pattern match found. Solution: Check for error.

" Vim indent file
" Language:      BibTeX
" Maintainer:    Dorai Sitaram <ds26@gte.com>
" URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
" Last Change:   2005 Mar 28

" Only do this when not done yet for this buffer
if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

setlocal cindent

let b:undo_indent = "setl cin<"