bug#38026: [PATCH] Explain negative NABS in `goto-history-element'.

[Hong Xu]

On 11/2/19 10:54 AM, Eli Zaretskii wrote:
> > Cc: 38026@debbugs.gnu.org
> > From: Hong Xu <hong@topbug.net>
> > Date: Sat, 2 Nov 2019 10:07:03 -0700
> >
> > On 11/2/19 1:03 AM, Eli Zaretskii wrote:
> > > Thanks, but I don't see how this clarifies the issue.  Can you tell
> > > more about your motivation?
> >
> > The motivation is to clarify what a negative NABS means. From the current 
> > document, it is unclear that NABS can be negative.
>
> In that case, the patch is insufficient.  First, we don't document
> minibuffer-default in the manual, so referencing it will leave the
> reader wondering what it is, and how it is set and used.  Second, the
> doc string of goto-history-element should also explain what is the
> meaning of negative values.  And third, several functions bind
> minibuffer-default to certain values, and I'm not sure this variable
> can usefully be documented in a manual.
>
> So I think the text needs not reference minibuffer-default, but
> instead talk about "future history", like the Emacs manual does.

Thanks. Sounds like a good idea. I've attached an update.

0001-Mention-future-history-in-some-history-related-minib.patch
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