bug#67386: 29.1; dbus error with recent dbus

[Rahguzar]

Dear Emacs maintainers,

To reproduce the error from emacs -Q please evaluate the following code,

(require dbus)
(dbus-unregister-object
 (dbus-register-method
  :system (dbus-get-unique-name :system)
  "a/path" "inter.face"
  "method" #'ignore))

Upon this I get an error,

(dbus-error "org.freedesktop.DBus.Error.InvalidArgs" "Cannot release a service 
starting with ':' such as \":1.98\"")

The reason is that Emacs tries to unregister the service at
'(dbus-get-unique-name :system)' after unregistering the method since it
is the only method for the service. However I think Emacs should make an
exception when the service is at '(dbus-get-unique-name :system)'.

The actual code that prompted this bug report was error free until
fairly recently so my guess is the error is due to some changes in the
recent version of dbus. The installed dbus version is 1.14.10

Thanks,
Rahguzar


In GNU Emacs 29.1 (build 1, x86_64-suse-linux-gnu, GTK+ Version 3.24.38,
 cairo version 1.18.0) of 2023-11-18 built on i03-ch1c
System Description: openSUSE Tumbleweed

Configured using:
 'configure --host=x86_64-suse-linux-gnu --build=x86_64-suse-linux-gnu
 --program-prefix= --disable-dependency-tracking --prefix=/usr
 --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin
 --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include
 --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var
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 --infodir=/usr/share/info --with-pgtk --with-native-compilation=aot
 --with-cairo --with-libotf --with-jpeg --with-tiff --with-gif
 --with-png --with-rsvg --with-xft --with-xml2 --with-dbus --with-sound
 --with-json --with-mailutils --with-gnutls --with-tree-sitter
 
--enable-locallisppath=/usr/share/emacs/29.1/site-lisp:/usr/share/emacs/site-lisp
 'CFLAGS=-O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3
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 LDFLAGS=-Wl,-O2'

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LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY
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