bug#62867: segfault in describe_vector

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Xinyang Chen <chenxy@mit.edu>,  62867@debbugs.gnu.org
> Date: Sat, 15 Apr 2023 18:16:32 -0400
> 
> > Stefan, can we do better than the below?
> 
> The patch looks about right to me.
> 
> Only detail is that `shadowed_by` contains a binding, so it can be
> a keymap, but it can also be a lambda expression, or a keyboard macro,
> so we shouldn't say "shadowed by a keymap" but just "shadowed" (unless
> we go through the extra trouble of checking if it's a keymap, or if it's
> a ...).

Thanks, installed on the emacs-29 branch with that change, and closing
the bug.