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: Ihor Radchenko <yantar92@posteo.net>,  sbaugh@catern.com,
>   sbaugh@janestreet.com,  64423@debbugs.gnu.org
> Date: Wed, 05 Jul 2023 08:30:12 +0800
> 
> IIRC idle timers used to be implemented in Lisp, with an asynchronous
> process sending output whenever a timer expired :-)

No, _all_ timers were implemented like that at the beginning, before
they were rewritten based on the Emacs main loop.