bug#29713: 26.0; Provide completion for `make-frame-on-display'

[Basil L. Contovounesios]

Juri Linkov <juri@linkov.net> writes:

> Maybe fall back to previous implementation replaced by x-display-list
> in 0746a9e275d, i.e.
>
>   (if (fboundp 'x-display-list)
>       (x-display-list)
>     (delete-dups
>      (mapcar (lambda (frame)
>                (frame-parameter frame 'display))
>              (frame-list))))
>
> Does this fail on --without-x builds?

No, but (frame-parameter frame 'display) is always nil, so you still get
practically the same error as with:

  (and (fboundp 'x-display-list)
       (x-display-list))

-- 
Basil