Re: feedmail.el in the public domain?

[Eli Zaretskii]

> From: Paul Eggert <address@hidden>
> Date: Sun, 16 Sep 2018 21:12:57 -0700
> Cc: address@hidden, address@hidden
> 
> Stefan Monnier wrote:
> > 1- Take a file from public domain.
> > 2- Make many small changes to it over the course of several years (all
> >     after the Berne convention).
> > 3- Assume the sum of those changes is significantly higher than the
> >     "20-lines triviality threshold".
> > 4- Is the result still public domain?
> 
> No, the result is public domain only if the contributors deliberately place 
> it 
> into the public domain, in a process known as dedication. And that process is 
> legally controversial for works created after 1976 in the US - though I'm 
> perhaps giving you more detail than you want to know, Creative Commons 
> recommends against relying on such dedications 
> <https://creativecommons.org/licenses/publicdomain/>.

Does this mean we cannot/shouldn't have _any_ PD files in Emacs?
Because feedmail.el isn't the only one, we have a few more.