*** /tmp/ediffWCMSQF	2020-09-03 13:49:33.193916784 +0200
--- /home/albinus/src/emacs-27/lisp/net/dbus.el	2020-09-03 13:36:44.960364842 +0200
***************
*** 1477,1482 ****
--- 1477,1502 ----
  	       (nreverse result))
  	(push (cons (car dict) (cl-caadr dict)) result)))))

+ (defun dbus-get-this-registered-property (bus _service path interface property)
+   "Return PROPERTY entry of `dbus-registered-objects-table'.
+ Filter out not matching PATH."
+   ;; Remove entries not belonging to this case.
+   (seq-remove
+    (lambda (item)
+      (not (string-equal path (nth 2 item))))
+    (gethash (list :property bus interface property)
+             dbus-registered-objects-table)))
+
+ (defun dbus-get-other-registered-property (bus _service path interface property)
+   "Return PROPERTY entry of `dbus-registered-objects-table'.
+ Filter out matching PATH."
+   ;; Remove matching entries.
+   (seq-remove
+    (lambda (item)
+      (string-equal path (nth 2 item)))
+    (gethash (list :property bus interface property)
+             dbus-registered-objects-table)))
+
  (defun dbus-register-property
    (bus service path interface property access value
     &optional emits-signal dont-register-service)
***************
*** 1543,1554 ****
    ;; because the property might be accessed from anybody.
    (let ((key (list :property bus interface property))
  	(val
! 	 (list
  	  (list
  	   nil service path
  	   (cons
  	    (if emits-signal (list access :emits-signal) (list access))
! 	    value)))))
      (puthash key val dbus-registered-objects-table)

      ;; Return the object.
--- 1563,1576 ----
    ;; because the property might be accessed from anybody.
    (let ((key (list :property bus interface property))
  	(val
!          (cons
  	  (list
  	   nil service path
  	   (cons
  	    (if emits-signal (list access :emits-signal) (list access))
! 	    value))
!           (dbus-get-other-registered-property
!            bus service path interface property))))
      (puthash key val dbus-registered-objects-table)

      ;; Return the object.
***************
*** 1566,1581 ****
      (cond
       ;; "Get" returns a variant.
       ((string-equal method "Get")
!       (let ((entry (gethash (list :property bus interface property)
! 			    dbus-registered-objects-table)))
  	(when (string-equal path (nth 2 (car entry)))
  	  `((:variant ,(cdar (last (car entry))))))))

       ;; "Set" expects a variant.
       ((string-equal method "Set")
        (let* ((value (caar (cddr args)))
! 	     (entry (gethash (list :property bus interface property)
! 			     dbus-registered-objects-table))
  	     ;; The value of the hash table is a list; in case of
  	     ;; properties it contains just one element (UNAME SERVICE
  	     ;; PATH OBJECT).  OBJECT is a cons cell of a list, which
--- 1588,1603 ----
      (cond
       ;; "Get" returns a variant.
       ((string-equal method "Get")
!       (let ((entry (dbus-get-this-registered-property
!                     bus service path interface property)))
  	(when (string-equal path (nth 2 (car entry)))
  	  `((:variant ,(cdar (last (car entry))))))))

       ;; "Set" expects a variant.
       ((string-equal method "Set")
        (let* ((value (caar (cddr args)))
! 	     (entry (dbus-get-this-registered-property
!                      bus service path interface property))
  	     ;; The value of the hash table is a list; in case of
  	     ;; properties it contains just one element (UNAME SERVICE
  	     ;; PATH OBJECT).  OBJECT is a cons cell of a list, which
***************
*** 1590,1597 ****
  	  (signal 'dbus-error
  		  (list "Property not writable at path" property path)))
  	(puthash (list :property bus interface property)
! 		 (list (append (butlast (car entry))
! 			       (list (cons (car object) value))))
  		 dbus-registered-objects-table)
  	;; Send the "PropertiesChanged" signal.
  	(when (member :emits-signal (car object))
--- 1612,1621 ----
  	  (signal 'dbus-error
  		  (list "Property not writable at path" property path)))
  	(puthash (list :property bus interface property)
! 		 (cons (append (butlast (car entry))
! 			       (list (cons (car object) value)))
!                        (dbus-get-other-registered-property
!                         bus service path interface property))
  		 dbus-registered-objects-table)
  	;; Send the "PropertiesChanged" signal.
  	(when (member :emits-signal (car object))
***************
*** 1607,1620 ****
        (let (result)
  	(maphash
  	 (lambda (key val)
! 	   (when (and (equal (butlast key) (list :property bus interface))
! 		      (string-equal path (nth 2 (car val)))
! 		      (not (functionp (car (last (car val))))))
! 	     (push
! 	      (list :dict-entry
! 		    (car (last key))
! 		    (list :variant (cdar (last (car val)))))
!               result)))
  	 dbus-registered-objects-table)
  	;; Return the result, or an empty array.
  	(list :array (or result '(:signature "{sv}"))))))))
--- 1631,1645 ----
        (let (result)
  	(maphash
  	 (lambda (key val)
!            (dolist (item val)
! 	     (when (and (equal (butlast key) (list :property bus interface))
! 		        (string-equal path (nth 2 item))
! 		        (not (functionp (car (last item)))))
! 	       (push
! 	        (list :dict-entry
! 		      (car (last key))
! 		      (list :variant (cdar (last item))))
!                 result))))
  	 dbus-registered-objects-table)
  	;; Return the result, or an empty array.
  	(list :array (or result '(:signature "{sv}"))))))))