bug#64423: 29.0.92; save-interprogram-paste-before-kill doesn't prevent streaming large selections

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Spencer Baugh <sbaugh@janestreet.com>,  sbaugh@catern.com,
>   64423@debbugs.gnu.org
> Date: Sun, 09 Jul 2023 08:39:51 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > So please modify the patch to affect only X, TIA.
> 
> It's impossible to quit from selection transfers in other window systems
> anyway, except perhaps PGTK when the toolkit is feeling generous.

Why "impossible"?  Part of the processing is in Lisp, so it is
definitely possible.