bug#52126: Problematic characters in info node names

[Eli Zaretskii]

> From: Protesilaos Stavrou <info@protesilaos.com>
> Cc: larsi@gnus.org, Stefan Kangas <stefan@marxist.se>,
>  52126@debbugs.gnu.org, kyle@kyleam.com, rgm@gnu.org
> Date: Mon, 29 Nov 2021 20:04:37 +0200
> 
> 1. Do you want me to change this now on the trunk?

Yes.

> 2. This affects the emacs-28 branch.  Should I patch that as well?

It's up to you.  It isn't important either way.