Re: complexity in minibuffer

[João Távora]

On Wed, Jun 2, 2021 at 7:31 PM Dmitry Gutov <dgutov@yandex.ru> wrote:
>
> On 02.06.2021 18:06, Stefan Monnier wrote:
> > I suspect they should get an `md` argument instead (which will include
> > the `group-function`, of course).
>
> Good idea: this way the argument is not tied to an optional feature, but
> would OTOH provide renderers' access to any such feature that we might
> add in the future.

Agree  we have to give _some_ state of the completion operation
to the renderer, not just the completions themselves.   But lets
concentrate that state as much as possible.  Ideally, as I think
you once suggested, we'd have a "completion operation instance"
object/ADT that contains the collection of completions and all the
paraphernalia used to manipulate it.  We'd pass _that_ around,
instead of md's, minibuffer-* special vars, completion-extra-properties
and whatnot.  Not sure if easy to realize but at least that's what
I would aim for.

João