bug#53396: 27.1; icalendar rendering should include timezone

[Eli Zaretskii]

> Resent-From: Stefan Kangas <stefan@marxist.se>
> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
> Resent-CC: bug-gnu-emacs@gnu.org
> Resent-Sender: help-debbugs@gnu.org
> Cc: 53396@debbugs.gnu.org
> From: Stefan Kangas <stefan@marxist.se>
> Date: Tue, 7 Jun 2022 17:04:10 -0500
> 
> Antoine Beaupré <anarcat@debian.org> writes:
> 
> >  1. the default date format is American. I understand Americans first
> >     built Emacs, but its use has largely spread outside of the United
> >     States of America which has another, standard, time format called
> >     ISO 8601. workaround: (setq calendar-date-style 'iso)
> 
> Why not change the `calendar-date-style' default to `iso'?
> 
> It seems overly US-centric to prefer `american' when most of the rest of
> the world does not use that particular style.

IMNSHO, 'iso' is a bad default because no one uses it.

If we don't want to be "US-centric", we should determine the default
from the user's locale.