bug#18059: 24.3.92; defvar and special variables

[Eli Zaretskii]

> From: Noam Postavsky <npostavs@gmail.com>
> Date: Sun, 04 Mar 2018 18:27:54 -0500
> Cc: 18059@debbugs.gnu.org, Stefan Monnier <monnier@IRO.UMontreal.CA>
> 
> > Then we should document that use case.
> 
> Yes, you're right.  Since this case really relates more to the lexical
> vs dynamic binding, I think it would make more sense to add the example
> in a later section (with a link, of course).  I still don't think I can
> claim with a straight face that (let (_) (defvar foo) ...) being
> different than (let () (defvar foo) ...) is not a bug though.

Thanks.

> +For a more elaborate example of using @code{defvar} without a value,
> +@xref{Local defvar example}.

@xref is inappropriate in the middle of a sentence; please use "see
@ref" instead.