Subject: Re: bug#68272: [PATCH] Fix -1 leaking from C to lisp in 'read-event' etc.

From: Eli Zaretskii <[email-masked]>
Date: Tue, 05 Mar 2024 20:53:44 +0200

> From: Stefan Monnier <[email-masked]>
> Cc: [email-masked],  [email-masked]
> Date: Tue, 05 Mar 2024 12:57:56 -0500
> 
> >> > IOW, what about callers that actually _want_ to know when the macro
> >> > ends prematurely?
> >> I couldn't find any, really.
> > ??? calc is one, obviously.
> 
> I don't think so: AFAICT the tests there were added simply
> because they had to do something with this -1 return value.

Any evidence?  Andreas thought differently, what if he is right?