* net/dbus.el (dbus-list-activatable-names): Add optional argument BUS.

lisp/ChangeLog

+2011-02-07  Michael Albinus  <michael.albinus@gmx.de>
+
+	* net/dbus.el (dbus-list-activatable-names): Add optional argument
+	BUS.
+
 2011-02-07  Deniz Dogan  <deniz.a.m.dogan@gmail.com>
 
 	* net/rcirc.el (rcirc-handler-317): New function (Bug#6507).

lisp/net/dbus.el

@@ -506,13 +506,14 @@ well formed."
 
 ;;; D-Bus registered names.
 
-(defun dbus-list-activatable-names ()
+(defun dbus-list-activatable-names (&optional bus)
   "Return the D-Bus service names which can be activated as list.
-The result is a list of strings, which is `nil' when there are no
-activatable service names at all."
+If BUS is left nil, `:system' is assumed.  The result is a list
+of strings, which is `nil' when there are no activatable service
+names at all."
   (dbus-ignore-errors
     (dbus-call-method
-     :system dbus-service-dbus
+     (or bus :system) dbus-service-dbus
      dbus-path-dbus dbus-interface-dbus "ListActivatableNames")))
 
 (defun dbus-list-names (bus)