bug#81512: [PATCH] Add command `outline-occur'

> If we all agree in the changes below, I'll send the v4 of the patch.
>
> - Rename the variable to `display-buffer-default-alist'.
> - Add a note in the docstring of `display-buffer-default-alist' as well
>   as the corresponding section of the Elisp manual saying that this
>   variable is intended to be let-bound (rather than saying that "it
>   should never be assigned buffer-locally or globally" as in the v2 of
>   patch).
>
> Juri, Martin are you OK?

Yes, please send the v4.