Mark Oteiza <mvoteiza@udel.edu> writes:

> Daniel Colascione <dancol@dancol.org> writes:
>
>> Commit d605a539d4863c7e7c66aaea6e538ae14c47f3d7 broke Emacs when winner
>> was enabled without cl-lib being loaded. Nobody seems to have noticed
>> until now, which suggests that either almost nobody uses winner, or
>> almost everybody has cl-lib loaded anyway. Maybe it's time to just dump
>> cl-lib with Emacs.
>
> Bug#21549
>
> I'd be happy to have more useful functions in "core". (Can we have
> `filter` yet?)

It's not in "core", it's not preloaded, but seq.el provides useful
additional sequence-manipulation functions such as `seq-filter'.

Nico