bug#62248: 29.0.60; nil obsolete

[Eli Zaretskii]

> Cc: luangruo@yahoo.com
> From: Michael Welsh Duggan <mwd@md5i.com>
> Date: Sat, 18 Mar 2023 02:52:57 -0400
> 
> Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
> editors" <bug-gnu-emacs@gnu.org> writes:
> 
> > Type:
> >
> >   C-h v nil RET
> >
> > Emacs will describe `nil' as obsolete since 29.1.
> > That is absurd.
> 
> Happens for me too, but not with -Q.  So some common package is causing
> this, likely by accident.

Can you step through help-fns--var-obsolete and tell what you see
there?  E.g., does (get nil 'byte-obsolete-variable) return non-nil?

If so, how about running Emacs with a breakpoint in Fput and condition
that symbol == Qnil (assuming your Emacs is not configured to
represent Lisp objects as structs)?