bug#71579: 30.0.50; Mailto URI handler emacsclient doesn't show unless there's a visible frame

[Björn Bidar]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Sun, 16 Jun 2024 00:35:11 +0300
>> From:  Björn Bidar via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>> 
>> 
>> If there's no open frame when using the emacsclient version of the
>> mailto handler no frame to show the newly created message buffer
>> will be opened.
>> 
>> 1. Use Emacs (client) as mailto handler
>> 2. Make sure all frames are closed
>> 3. Open mailto link
>> 4. See bug
>
> Thanks, but please tell more details.  Specifically, how do you do
> item 1 above?  Also item 3.  Someone will have to reproduce these
> steps to try to debug them, so we need to know those details.

1. The Emacs Client Email desktop file emacsclient-mail.desktop
   is set as application to open mailto links
   in the users desktop environment, in my case this is KDE.
3. Open mailto link means open a mailto link in a application such
   as a browser to be specific I used the website below to test:
   https://www.scottseverance.us/mailto.html

Emacs is running with emacs --fg-daemon without any frames open.