bug#53894: 27.2; Clipboard copy -> C-y -> M-y -> Same clipboard copy does not push to kill ring

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Lars Ingebrigtsen <larsi@gnus.org>,  ignaciocasso@hotmail.com,
>   53894@debbugs.gnu.org
> Date: Thu, 10 Feb 2022 20:14:36 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Using paste from the clipboard mixed with C-y/M-y will always be
> > tricky, no matter what we do.  That's why we have
> > save-interprogram-paste-before-kill.
> >
> > But if this can be made less tricky, I don't mind doing that, of
> > course.
> 
> If nobody minds, I'll install a change that disables the DWIM behaviour
> when the ownership information is reliable.

I do mind: having different behaviors on different platforms is not
ideal, to say the least, especially for maintenance.  But I'm not sure
this is strong enough a reason not to make the change in this case.