> I think the reason for disabling restoring frames on -nw wasn't because
> of technical reasons, but because of most users not being aware that an
> -nw Emacs can have frames, so they ended up with very confusing setups
> after restoring from desktop.
>
> But this is an issue that's come up again and again, so I think we
> should introduce a new user option to allow desktop to restore frames on
> -nw.  (And that means that we should also apply your patch, I think?)

Indeed, this is what an old comment in desktop.el used to say:

  ;; People don't expect emacs -nw, or --daemon,
  ;; to create graphical frames (bug#17693).
  ;; TODO perhaps there should be a separate value
  ;; for desktop-restore-frames to control this startup behavior?

So this patch creates such separate values: