From: Stephen Berman <stephen.berman@gmx.net>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: 39115@debbugs.gnu.org, ynyaaa@gmail.com
Subject: bug#39115: 26.3; eww consecutive links look like one link with mouse-over
Date: Thu, 23 Jan 2020 15:47:28 +0100 [thread overview]
Message-ID: <874kwm9qm7.fsf@gmx.net> (raw)
In-Reply-To: <87a76es6pu.fsf@gnus.org> (Lars Ingebrigtsen's message of "Thu, 23 Jan 2020 13:22:21 +0100")
On Thu, 23 Jan 2020 13:22:21 +0100 Lars Ingebrigtsen <larsi@gnus.org> wrote:
> Stephen Berman <stephen.berman@gmx.net> writes:
>
>> Why do overlays and text properties differ on this?
>
> Overlays are objects, so even if they have identical properties, it's
> easy to see where an overlay starts and stops. For text properties, we
> just use ad-hoc strategies like seeing whether the property we're
> interested changes or not, and determine the start/stop of the region
> based on that.
>
> It's perhaps unfortunate that text property regions don't have more
> "identity", but I guess it'd be difficult to change that now.
On Thu, 23 Jan 2020 16:39:46 +0200 Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Stephen Berman <stephen.berman@gmx.net>
>> Cc: larsi@gnus.org, ynyaaa@gmail.com, 39115@debbugs.gnu.org
>> Date: Wed, 22 Jan 2020 21:44:11 +0100
>>
>> Why do overlays and text properties differ on this?
>
> That's a side effect of different implementations. Text properties
> are kept as intervals, and so two adjacent intervals with the same
> value of the property are indistinguishable from a single interval
> covering both stretches of text (and AFAIR we actually convert them
> into a single interval when we see fit). By contrast, overlays are
> kept in a list, and you can have any number of them at the same
> position with the same property (which is why you can have, e.g., two
> or more after-strings at EOB, and they will both be displayed).
Thanks for the explanations.
Steve Berman
next prev parent reply other threads:[~2020-01-23 14:47 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-13 15:16 bug#39115: 26.3; eww consecutive links look like one link with mouse-over ynyaaa
2020-01-22 15:16 ` Lars Ingebrigtsen
2020-01-22 15:27 ` Robert Pluim
2020-01-22 15:29 ` Lars Ingebrigtsen
2020-01-22 15:40 ` Robert Pluim
2020-01-22 15:45 ` Lars Ingebrigtsen
2020-01-22 16:05 ` Robert Pluim
2020-01-22 16:31 ` Eli Zaretskii
2020-01-22 19:15 ` Stephen Berman
2020-01-22 19:23 ` Eli Zaretskii
2020-01-22 20:44 ` Stephen Berman
2020-01-23 12:22 ` Lars Ingebrigtsen
2020-01-23 14:47 ` Stephen Berman [this message]
2020-01-23 14:39 ` Eli Zaretskii
2020-01-23 12:16 ` Lars Ingebrigtsen
2020-01-23 1:47 ` ynyaaa
2020-01-23 12:18 ` Lars Ingebrigtsen
2020-01-23 14:28 ` Eli Zaretskii
2020-01-24 15:24 ` Lars Ingebrigtsen
2020-01-24 15:41 ` Eli Zaretskii
2020-02-19 13:09 ` Lars Ingebrigtsen
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