> And what should generic deletion do: delete the first or delete them
> all?

The generic delete should delete all the keys (for alists), so the
behaviour is uniform. That's what I meant on my email with "using
alist-delete/all".

> It doesn't make sense to have both generic functions, given that
> alists are probably the only case in which the distinction is needed.

Yeah, would be silly.

>
> So since this SRFI is already very late, and since it's possible to create
> your own DTOs or to write a new SRFI, it's better to leave them out rather
> than to provide them wrongly.

Ah in that case...