GNU bug report logs - #21305
25.0.50; `get-buffer-window-list' doc - what order?

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Message #22 received at 21305-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 21305-done <at> debbugs.gnu.org
Subject: Re: bug#21305: 25.0.50; `get-buffer-window-list' doc - what order?
Date: Fri, 21 Aug 2015 18:21:18 +0300

> Date: Fri, 21 Aug 2015 08:08:25 -0700 (PDT)
> From: Drew Adams <drew.adams <at> oracle.com>
> Cc: 21305 <at> debbugs.gnu.org
> 
> > > > The order is unspecified, which means the caller should not
> > > > depend on it.  I don't think there's anything wrong with that;
> > > > do you?
> > >
> > > Well, it's certainly the prerogative of designers to decide that
> > > the order is undefined and that users cannot depend on it.  In
> > > that case, you can close the bug now.
> > >
> > > But as one user I'm disappointed.  I was hoping for a usable
> > > window order.
> > 
> > It's the order of traversing the window tree depth-first (as
> > described in the ELisp manual under "Cyclic Window Ordering").
> 
> If so, then the order is not undefined.

I didn't say "undefined", I said "unspecified".

> > I don't see how saying that would be of any help to users of this
> > function.
> 
> Well, it apparently won't help me in my quest for a chronological
> ordering of windows for the same buffer by access time.
> 
> But I think it would be helpful to tell users that the order is
> the same as that described in `Cyclic Window Ordering'.

What can the users do with that information?  (It is already in the
ELisp manual; I'm talking about the doc string here.)

> > Describing the order would require a non-trivial amount of text, so
> > without a good reason, I don't think we should add it.
> 
> How is it more difficult than saying that the order is the same as
> that specified in `Cyclic Window Ordering', and xreffing that node?

I consider references to the manual in doc strings a bad habit.

I'm closing the bug.

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