bug#65051: internal_equal manipulates symbols with position without checking symbols-with-pos-enabled.

[Eli Zaretskii <eliz@gnu.org>]

> Cc: 65051@debbugs.gnu.org
> Date: Sat, 12 Aug 2023 01:36:08 -0400
> From:  Stefan Monnier via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> +A @dfn{symbol with position} is a pair of a symbol, the @dfn{bare symbol},
> +together with an unsigned integer called the @dfn{position}.
> +They cannot themselves have entries in obarrays (contrary to their
> +bare symbols; @pxref{Creating Symbols}).

That "They" which begins the last sentence doesn't make clear who are
"they".  You want to say "Symbols with position" instead -- this is
repetition, but in this case it is actually needed.

>  For most purposes, when the flag variable
>  @code{symbols-with-pos-enabled} is non-@code{nil}, symbols with
> -positions behave just as bare symbols do.  For example, @samp{(eq
> -#<symbol foo at 12345> foo)} has a value @code{t} when that variable
> -is set (but @code{nil} when it isn't set).  Most of the time in Emacs this
> -variable is @code{nil}, but the byte compiler binds it to @code{t}
> -when it runs.
> +positions behave just as their bare symbols would.  For example,
   ^^^^^^^^^
"position", singular.

Thanks.