bug#66326: 29.1.50; There should be a way to promote warnings to errors

[Eli Zaretskii <eliz@gnu.org>]

> From: Spencer Baugh <sbaugh@catern.com>
> Date: Sat, 11 Nov 2023 14:37:03 +0000 (UTC)
> Cc: Spencer Baugh <sbaugh@janestreet.com>, 66326@debbugs.gnu.org,
> 	stefankangas@gmail.com
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> >> From: Spencer Baugh <sbaugh@janestreet.com>
> >> Cc: Stefan Kangas <stefankangas@gmail.com>,  Eli Zaretskii <eliz@gnu.org>,
> >>    66326@debbugs.gnu.org
> >> Date: Fri, 10 Nov 2023 16:40:14 -0500
> >> 
> >> I just ran into a situation like this yet again.  Again, there was a
> >> stray warning on startup (something about "Symbol’s value as variable is
> >> void", definitely concerning)
> >
> > The text you quote is not a warning, it's an error.  --debug-init
> > should have taken care of debugging it, AFAIU.
> 
> I know what the difference between an error and a warning is :) The
> reason this text, which usually appears in errors, showed up as a
> warning, was because some random code caught the error and turned it
> into a warning.

Then you need to find that code, and Bob's your uncle.

I see no need to add complications to Emacs based on such use cases.
We cannot be expected to have a ready solution for every possible
Emacs-related calamity.