From: Eli Zaretskii <eliz@gnu.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: [Emacs-diffs] master fd8f724: * src/xdisp.c (overlay_arrows_changed_p): Fix last change.
Date: Fri, 03 Mar 2017 10:11:03 +0200 [thread overview]
Message-ID: <83a892n5k8.fsf@gnu.org> (raw)
In-Reply-To: <jwv60jr9uru.fsf-monnier+gmane.emacs.devel@gnu.org> (message from Stefan Monnier on Thu, 02 Mar 2017 17:32:52 -0500)
> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Thu, 02 Mar 2017 17:32:52 -0500
>
> >> > Isn't it easier to keep the record of changes in these variables in
> >> > the buffer object, like we do with BUF_MODIFF etc.?
> >> I don't understand the question. Which "these variables" are you
> >> talking about?
> > The 3 variables related to overlay-arrow whose changes need to trigger
> > redisplay of the respective buffers: overlay-arrow-position,
> > overlay-arrow-string, and overlay-arrow-bitmap.
>
> But that means we need to watch variable assignments, marker
> modifications, and symbol property modifications. Using overlays gets
> us all this "for free" because we already watch all overlay modifications.
Variables and markers, yes. Symbol properties: I don't see why would
we need to watch them.
Anyway, it was just a thought. It sounds like a conceptually simpler,
even if the implementation is somewhat hairy.
next prev parent reply other threads:[~2017-03-03 8:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-28 16:10 [Emacs-diffs] master fd8f724: * src/xdisp.c (overlay_arrows_changed_p): Fix last change Eli Zaretskii
2017-02-28 17:47 ` Stefan Monnier
2017-02-28 18:09 ` Eli Zaretskii
2017-02-28 18:58 ` Stefan Monnier
2017-02-28 19:11 ` Eli Zaretskii
2017-02-28 20:02 ` Stefan Monnier
2017-03-01 17:03 ` Eli Zaretskii
2017-03-02 5:27 ` Stefan Monnier
2017-03-02 16:02 ` Eli Zaretskii
2017-03-02 18:29 ` Stefan Monnier
2017-03-02 20:18 ` Eli Zaretskii
2017-03-02 22:32 ` Stefan Monnier
2017-03-03 8:11 ` Eli Zaretskii [this message]
2017-03-06 2:53 ` Stefan Monnier
2017-03-03 8:13 ` Eli Zaretskii
2017-03-06 4:17 ` Stefan Monnier
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