bug#62229: 29.0.60; It's no longer possible to customize the xref ring size

[Spencer Baugh <sbaugh@janestreet.com>]

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On Fri, Mar 17, 2023, 04:17 Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Spencer Baugh <sbaugh@janestreet.com>
> > Date: Thu, 16 Mar 2023 18:11:06 -0400
> >
> >
> > Emacs 28 had the function xref-set-marker-ring-length and the
> > customizable variable xref-marker-ring-length which allowed growing
> > the amount of history kept by xref.
> >
> > This feature has been lost in Emacs 29; that variable has been
> > obsoleted with no replacement.
> >
> > It's not clear, looking at the change, whether this is because the
> > size is now infinite or not.  The same commit that obsoleted that
> > variable added the similar tags-location-ring-length.  However that
> > variable has no docstring, no customize hooks, and setting it has no
> > effect unless tags-reset-tags-tables is called.
> >
> > At the very least, all this should be documented better, and the
> > obsoleting of this function and variable should be mentioned in NEWS.
> > If the history is indeed infinite now, that should be mentioned in
> > NEWS as well.
>
> Indeed, that change paid very little attention to documenting the
> important aspects of adding Xref history and using it instead of a
> limited-size ring.  We should do better.
>
> I've now attempted to add the missing documentation; please take a
> look at the latest emacs-29 branch.
>

Yes, looks great! Covers all my concerns!

>

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