bug#65902: 29.0.92; emacsclient-mail.desktop fails due to complicated escaping

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Fri, 22 Sep 2023 00:05:20 -0700
> Cc: 65902@debbugs.gnu.org, Spencer Baugh <sbaugh@janestreet.com>, 
> jporterbugs@gmail.com
> 
> I think it would be good if we could reduce the amount of stuff we have
> to remember escaping here, or even better if we didn't need to escape
> anything at all.

We cannot avoid some escaping because the command is invoked through
"sh -c".  This is not our decision, this is the decision of
freedesktop.org, and we have no control on what they decide, even if
we think the decision is not the best one.