patch 8.2.4219: reading before the start of the line Commit: https://github.com/vim/vim/commit/44db8213d38c39877d2148eff6a72f4beccfb94e Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 25 21:26:17 2022 +0000 patch 8.2.4219: reading before the start of the line Problem: Reading before the start of the line. Solution: Check boundary before trying to read the character.

" Vim indent file
" Language:    	    DocBook Documentation Format
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2006-04-19

if exists("b:did_indent")
  finish
endif

" Same as XML indenting for now.
runtime! indent/xml.vim

if exists('*XmlIndentGet')
  setlocal indentexpr=XmlIndentGet(v:lnum,0)
endif