Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> +(require 'cl-extra) ;; for cl-subseq
>
> Doesn't (require 'cl-lib) do the trick?

Yes, it does.

> It's usually a bad to require
> one of the files of cl-lib, and better to require cl-lib instead.

Indeed, I have no clue why I required cl-extra instead of cl-lib.

Nico