* lisp/window.el (window-state-buffers): New function.
* lisp/tab-bar.el (tab-bar-get-buffer-tab): New function.

* lisp/emacs-lisp/seq.el (seq-some): Add autoload cookie.

* lisp/desktop.el (desktop-buffers-not-to-save-function): New variable.
(desktop-save-buffer-p): Use it.