bug#46621: Copy line

[Eli Zaretskii]

> From: Helmut Eller <eller.helmut@gmail.com>
> Date: Thu, 23 Jun 2022 17:47:18 +0200
> 
> > Please don't give this command a default key binding.
> >
> > There are a zillion commands that deserve a default
> > binding more than this one does.  And nearly all of
> > those zillion also don't need a default binding.
> 
> There is are default bindings for transpose-lines and for
> count-lines-page.  Neither of those seems particularly useful.

I use both all the time, so they are definitely very useful to me.