+(defun notmuch-interesting-buffer (b)
+ "Is the current buffer of interest to a notmuch user?"
+ (with-current-buffer b
+ (memq major-mode '(notmuch-show-mode
+ notmuch-search-mode
+ notmuch-hello-mode
+ message-mode))))
+
+;;;###autoload
+(defun notmuch-cycle-notmuch-buffers ()
+ "Cycle through any existing notmuch buffers (search, show or hello).
+
+If the current buffer is the only notmuch buffer, bury it. If no
+notmuch buffers exist, run `notmuch'."
+ (interactive)
+
+ (let (start first)
+ ;; If the current buffer is a notmuch buffer, remember it and then
+ ;; bury it.
+ (when (notmuch-interesting-buffer (current-buffer))
+ (setq start (current-buffer))
+ (bury-buffer))
+
+ ;; Find the first notmuch buffer.
+ (setq first (loop for buffer in (buffer-list)
+ if (notmuch-interesting-buffer buffer)
+ return buffer))
+
+ (if first
+ ;; If the first one we found is any other than the starting
+ ;; buffer, switch to it.
+ (unless (eq first start)
+ (switch-to-buffer first))
+ (notmuch))))
+