Subject: bug#58278: Add new function seq-keep

From: Lars Ingebrigtsen <[email-masked]>
Date: Tue, 04 Oct 2022 13:23:02 +0200

Robert Pluim <[email-masked]> writes:

> I never meant that. I meant defining `seq-keep' in terms of `'cl-mapcan',
> with the appropriate converting elements to lists done for you (or
> even using `mapcan' if youʼre willing to give up the &rest behaviour
> of `cl-mapcan')

Oh, OK.  I don't think that would be particularly efficient, though.