bug#64310: 29.0.92; pure-GTK warning under Wayland

[Eli Zaretskii <eliz@gnu.org>]

Ping!  Can we make some progress in this issue?

> From: Pankaj Jangid <pankaj@codeisgreat.org>
> Cc: Eli Zaretskii <eliz@gnu.org>,  64310@debbugs.gnu.org
> Date: Thu, 13 Jul 2023 15:00:16 +0530
> 
> Po Lu <luangruo@yahoo.com> writes:
> 
> >>> > Pankaj Jangid <pankaj@codeisgreat.org> writes:
> >>> >
> >>> >> Exec=sh -c "u=\\$(echo \\"\\$1\\" | sed 's/[\\\\\\"]/\\\\\\\\&/g');
> >>> >> exec emacsclient --alternate-editor= --display=\\"\\$DISPLAY\\"
> >>> >> --eval \\"(message-mailto \\\\\\"\\$u\\\\\\")\\"" sh %u
> >>> >
> >>> > I think this line here is the problem: it will make emacsclient try to
> >>> > use the Xwayland display.  What happens if you delete the `--display'
> >>> > argument from this command line?  Emacsclient should be smart enough to
> >>> > figure out which display to use from the environment alone.
> >>> 
> >>> Nope. I removed the "--display=..."  argument from
> >>> .local/share/emacs/29.0.92/etc/emacsclient-mail.desktop. It did not make
> >>> any difference.
> >>> 
> >
> > Sorry, I must've missed that reply.  Pankaj, what if you replace
> > --display="$DISPLAY" with --display="$WAYLAND_DISPLAY"?
> >
> 
> Nothing changes. When there is no default email handler configured
> i.e. when Firefox is set to ask each time. It shows two options for
> Emacs - (1) Emacs(Mail, Client) (2) Emacs (Mail). When I select the
> first one, it shows error that I reported. If I select option (2), Emacs
> launches without any warning (desired behaviour).
> 
>