+(defun notmuch-show-capture-state ()
+ "Capture the state of the current buffer.
+
+This includes:
+ - the list of open messages,
+ - the current message."
+ (list (notmuch-show-get-message-id) (notmuch-show-get-message-ids-for-open-messages)))
+
+(defun notmuch-show-apply-state (state)
+ "Apply STATE to the current buffer.
+
+This includes:
+ - opening the messages previously opened,
+ - closing all other messages,
+ - moving to the correct current message."
+ (let ((current (car state))
+ (open (cadr state)))
+
+ ;; Open those that were open.
+ (goto-char (point-min))
+ (loop do (notmuch-show-message-visible (notmuch-show-get-message-properties)
+ (member (notmuch-show-get-message-id) open))
+ until (not (notmuch-show-goto-message-next)))
+
+ ;; Go to the previously open message.
+ (goto-char (point-min))
+ (unless (loop if (string= current (notmuch-show-get-message-id))
+ return t
+ until (not (notmuch-show-goto-message-next)))
+ (goto-char (point-min))
+ (message "Previously current message not found."))
+ (notmuch-show-message-adjust)))
+
+(defun notmuch-show-refresh-view (&optional retain-state)
+ "Refresh the current view.