bug#32502: 27.0.50; Tramp; C-g during asynchronous remote find-file kills Emacs

[Eli Zaretskii]

> From: Michael Albinus <michael.albinus@gmx.de>
> Cc: Eli Zaretskii <eliz@gnu.org>,  32502@debbugs.gnu.org
> Date: Thu, 30 Aug 2018 11:24:00 +0200
> 
> So we also need a command which lets you switch to the main thread,
> wherever you are.

This would need some infrastructure that currently doesn't exist.  Wed
can tell the current thread to yield, but we have no way of
designating another thread that will run when the first one yields.