Re: Adding String to Beginning of Lines

[Jean Louis]

* Michael Heerdegen <michael_heerdegen@web.de> [2020-11-11 14:01]:
> Jean Louis <bugs@gnu.support> writes:
> 
> > If I understand well I can simply remove my function and instead use
> > seq-empty-p? It looks that it does what we discussed here.
> 
> Yes.  Please (require 'seq) before using it.  Note that very old Emacs
> versions don't have the "seq" library.  For those (and only those) a
> "seq" package is provided in Gnu Elpa.

I see when doing package-install that I do need to require all
packages and I do so.

Do I need also to put those built-in packages in the comment section
of Package-Requires: ?