Re: Do we need C's extern in Emacs Lisp?

[Stefan Monnier]

> For example, if
>
>     (defvar foo)
>
> is in a Lisp file, then subsequent use of foo will generate an unknown
> variable warning.

That's not my experience.  Do you have a recipe?

> For example(2), if in the Lisp file there is
>
>     (declare-function foo nil)
>
> , this generates a warning when the function foo is later defined.

I haven't verified that it's indeed the case, but it sounds likely,
indeed.  We could consider silencing this warning, but I wonder why
you'd put such a `declare-function` in the same file where you define
`foo`, since it's redundant anyway.

Do you have a good use-case for it?


        Stefan