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: gazally@runbox.com,  32502@debbugs.gnu.org
> Date: Wed, 29 Aug 2018 22:57:24 +0200
> 
> This commit introduced the variable main-thread. Before, the
> thred-signal call couldn't deliver a signal to the main thread, Emacs
> couldn't abort.
> 
> So it looks like you are right: we cannot send signals to the main
> thread. Is this acceptable?

Yes, I think so, but let's document that.

Thanks.