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: Fri, 28 Dec 2018 12:18:51 -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[...]]>
> I use both in some of my XML files and I have never found any issue
> with them. Or perhaps this is just for particular cases?

Yes, it only makes a real difference when the content of those things
ends up confusing the parser (e.g. it looks like an unclosed tag, or
things along these lines).

        Stefan