bug#74467: 31.0.50; org-protocol emacsclient.desktop change is not fully functional

[Eli Zaretskii <eliz@gnu.org>]

Ping! Ihor, can you please look into this?

> Cc: 74467@debbugs.gnu.org
> Date: Sat, 23 Nov 2024 15:12:35 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > Date: Thu, 21 Nov 2024 18:53:21 +0000
> > From:  Alexey Lebedeff via "Bug reports for GNU Emacs,
> >  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> > 
> > The change introduced by
> > https://debbugs.gnu.org/cgi/bugreport.cgi?bug=65469 doesn't work anymore
> > in 'generic' desktop environment (as detected by 'xdg-open').
> > 
> > I assume it works in some desktop environments, where `xdg-open`
> > delegates opening to the desktop environment itself. But there is also a
> > `generic` version, which tries to implent XDG specification itself.
> > 
> > On 2023-10-03 there was a change introduced in xdg-utils
> > https://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=b9d3ecf8180c57dbb5ca47253898ba0553e81c60
> > to more strictly follow xdg specification, and only pass URL-like
> > arguments to programs that explicitly requested this by using '%u' or
> > '%U' parameters.
> > 
> > 'etc/emacsclient.desktop' uses '%F' parameter, which should be used for
> > programs that do not understand the URL syntax
> > (https://specifications.freedesktop.org/desktop-entry-spec/latest/exec-variables.html
> > - section about '%f', but also applies to '%F').
> > 
> > "x-scheme-handler/org-protocol" is the only URL-like protocol that's
> > mentioned in the 'etc/emacsclient.desktop', but 'xdg-open' refuses to
> > use it.
> > 
> > Just changing '%F' to '%U' in 'etc/emacsclient.desktop' is not possible,
> > as it allows 'xdg-open' to pass local files as "file:/" URL's if it
> > wants to.
> > 
> > One solution would be introducing separate  .desktop file
> > (i.e. 'etc/emacsclient-org-protocol.desktop'), analoguous to the already
> > existing 'etc/emacsclient-mail.desktop' (which uses '%u').
> 
> Ihor, could you please look into this?
> 
> (Each time such issues pop up, I regret again that we agreed to
> include these *.desktop files in our source tree, sigh.)
> 
> 
> 
>