GNU bug report logs - #79068
30.1; emacsclient.desktop: x-scheme-handler/org-protocol is inconsistent with %F

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ulrich Müller <ulm <at> gentoo.org>
To: bug-gnu-emacs <at> gnu.org
Cc: Ihor Radchenko <yantar92 <at> posteo.net>
Subject: 30.1; emacsclient.desktop: x-scheme-handler/org-protocol is
 inconsistent with %F
Date: Mon, 21 Jul 2025 10:41:28 +0200

emacsclient.desktop advertises x-scheme-handler/org-protocol as a
supported MIME types, but uses the %F field code (i.e. a list of files)
in its Exec key.

According to the Desktop Entry Specification, a non-file MIME type like
x-scheme-handler/* must not be paired with %F but with %U.

KDE warns about this at runtime (e.g. when trying to open a file in its
Dolphin file manager):

kf.kio.core: "/usr/share/applications/emacsclient.desktop" contains supported protocols but doesn't use %u or %U in its Exec line! This is inconsistent.


Unfortunately, I don't see a good way to fix this. Replacing %F with %U
might work for some applications, but the spec says about the %U field
code: "Local files may either be passed as file: URLs or as file path.",
and passing file:// to emacsclient won't generally work.

I've also tried adding both %F and %U but it is not valid either:

$ desktop-file-validate emacsclient.desktop 
emacsclient.desktop: error: value "sh -c "if [ -n \\"\\$*\\" ]; then exec emacsclient --alternate-editor= --display=\\"\\$DISPLAY\\" \\"\\$@\\"; else exec emacsclient --alternate-editor= --create-frame; fi" sh %F %U" for key "Exec" in group "Desktop Entry" may contain at most one "%f", "%u", "%F" or "%U" field code

Message #8 received at 79068 <at> debbugs.gnu.org (full text, mbox):

From: Ulrich Müller <ulm <at> gentoo.org>
To: 79068 <at> debbugs.gnu.org
Cc: Ihor Radchenko <yantar92 <at> posteo.net>
Subject: Re: 30.1; emacsclient.desktop: x-scheme-handler/org-protocol is
 inconsistent with %F
Date: Mon, 21 Jul 2025 14:29:58 +0200

A possible solution would be to drop x-scheme-handler/org-protocol
from emacsclient.desktop, and split it off into its own desktop file:

---------- 8< ----------
[Desktop Entry]
Type=Application
Name=emacsclient (org-protocol)
NoDisplay=true
Comment=Tell a running Emacs to handle an org-protocol link
Icon=emacs
Exec=emacsclient %U
Terminal=false
MimeType=x-scheme-handler/org-protocol;
---------- >8 ----------

However, adding yet another desktop file looks like overkill.
(And considering Eli's reply in bug #79066 it won't be a viable option.)

Message #11 received at 79068 <at> debbugs.gnu.org (full text, mbox):

From: Ihor Radchenko <yantar92 <at> posteo.net>
To: Ulrich Müller <ulm <at> gentoo.org>
Cc: 79068 <at> debbugs.gnu.org
Subject: Re: 30.1; emacsclient.desktop: x-scheme-handler/org-protocol is
 inconsistent with %F
Date: Mon, 21 Jul 2025 19:34:31 +0000

Ulrich Müller <ulm <at> gentoo.org> writes:

> A possible solution would be to drop x-scheme-handler/org-protocol
> from emacsclient.desktop, and split it off into its own desktop file:
> ...
>
> However, adding yet another desktop file looks like overkill.
> (And considering Eli's reply in bug #79066 it won't be a viable option.)

Also see bug#74467.

-- 
Ihor Radchenko // yantar92,
Org mode maintainer,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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