GNU bug report logs - #58801
[PATCH] Autoload the `calc-eval-error' variable

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From: Stefan Kangas <stefankangas <at> gmail.com>
To: Matt Armstrong <matt <at> rfc20.org>
Cc: 58801 <at> debbugs.gnu.org
Subject: bug#58801: [PATCH] Autoload the `calc-eval-error' variable
Date: Thu, 24 Nov 2022 11:50:56 -0800

Matt Armstrong <matt <at> rfc20.org> writes:

> Note that in my case I had (require 'calc) in the file that used the
> `calc-eval-error' symbol.  The info docs for calc state that (require
> 'calc) loads nearly everything you need from calc.  I may not understand
> something about the design constraints here, but it seems strange to
> refrain from autoloading this symbol, since (require 'calc) already
> (auto)loads a *lot* of stuff.

So you are saying that if you have a file foo.el, that requires calc,
and then tries to use calc-eval-error variable (documented as part of
the external API), you get a byte-compiler warning?

I agree that this doesn't sound very intuitive.

> My first impression is that adding `defvar' to squash bytecomp warnings
> for symbols in other packages is the wrong default action, and that the
> best idea is for
>
>   (require 'foo)
>
> to provide all symbols 'foo-' that one might need when using the `foo'
> package in the normal way.

So I think we could install your patch.

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