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

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: Stefan Kangas <stefankangas@gmail.com>,  jporterbugs@gmail.com,
>   sbaugh@catern.com,  sbaugh@janestreet.com,  65902@debbugs.gnu.org
> Date: Fri, 22 Sep 2023 11:29:06 +0200
> 
> On Sep 22 2023, Eli Zaretskii wrote:
> 
> > 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,
> 
> That's not true.  The Exec line is _not_ passed to the shell, but is
> processed by a specialized parser and then executed directly.

Then why is "sh -c" being used?