+(defun notmuch-show-next-button ()
+ "Advance point to the next button in the buffer."
+ (interactive)
+ (goto-char (button-start (next-button (point)))))
+
+(defun notmuch-show-previous-button ()
+ "Move point back to the previous button in the buffer."
+ (interactive)
+ (goto-char (button-start (previous-button (point)))))
+