bug#81662: 31.1; [FR] Registers pointing to bookmarks

> I propose to support bookmarks as register content. This way register
> keys can be used as quick access keys to bookmarks. Bookmarks are
> supported by many major modes. The feature can be implemented easily
> since register.el uses generic methods:

As I mentioned recently elsewhere, I think it would be good to
consolidate the two (as well as the `revert-buffer-function` and the
help-xref state), so I think it's a step in the right direction.

> (cl-defmethod register-val-describe ((bm (head bookmark)) _verbose)
>   (princ (format "Bookmark \"%s\"" (cdr bm))))

Ah, so you'd use `(bookmark . NAME)` as representation?
I was expecting we'd use the actual "bookmark record" rather than use an
indirection through `bookmark-alist`.  Now that I see this option, I'm
not sure which is best.


=== Stefan