Subject: Re: bug#33887: 26.1; Emacs hangs for several seconds when going to the end of an XML file in nXML mode

From: Stefan Monnier <[email-masked]>
Date: Thu, 27 Dec 2018 12:32:21 -0500

> Why was sgml-syntax-propertize-inside added?  Is its effect an
> absolute must, or merely a nice-to-have feature?

It's needed for correctness in the presence of <?...?> or <![CDATA[...]]>

> If the latter, perhaps a defcustom that could disable that call will
> be an okay solution, at least as a stopgap?

I don't think it should be terribly expensive, so I'd rather first try
and better understand the performance issue,

        Stefan