patch 8.2.3748: giving an error for an empty sign argument breaks a plugin Commit: https://github.com/vim/vim/commit/e5710a02cb78c2a0a868ea55740835c78ddecbb4 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Dec 5 19:10:04 2021 +0000 patch 8.2.3748: giving an error for an empty sign argument breaks a plugin Problem: Giving an error for an empty sign argument breaks a plugin. Solution: Do not give an error.

" 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