From: Carsten Dominik <carsten.dominik@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: "emacs-orgmode@gnu.org List" <emacs-orgmode@gnu.org>
Subject: Re: Enriched/Org is a colorful Org
Date: Fri, 12 Apr 2013 00:49:32 +0200 [thread overview]
Message-ID: <8461B483-8CC4-4D37-94BD-5CBEED773ADE@gmail.com> (raw)
In-Reply-To: <83vc7t9dr1.fsf@gnu.org>
On 11.4.2013, at 19:30, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Carsten Dominik <carsten.dominik@gmail.com>
>> Date: Thu, 11 Apr 2013 04:58:15 +0200
>> Cc: "emacs-orgmode@gnu.org List" <emacs-orgmode@gnu.org>,
>> Eli Zaretskii <eliz@gnu.org>
>>
>>> I guess Eli simply means, in a general way, that overlays do negatively impact
>>> display performance, as you said as well a couple of times:
>>
>> Yes, but Eli says that Org already severely tests the
>> display engine, and he uses the word "mess", even though
>> we mostly use text properties for faces and other
>> display-related things.
>
> Well, don't interpret "mess" too literally ;-)
I will add an overlay that displays "mess" as "mix" :D
>
>> Of course, Org already uses overlays, for example for
>> folding (as does outline.el), and for temporary marking
>> of text like during src block editing. But as your digging
>> shows, I ave avoided them in the past, and we are also not
>> using them for org-indent.el, for example.
>>
>> The reason why I said "overlays would be better" is simply
>> that they would allow to add display properties in a
>> persistent way that would not interfere that our
>> font-lock-unfontify-region function removes face and
>> invisibility text properties. So they are "better" for
>> implementing hand-made faces selection that should overrule
>> font-lock.
>
> Overlays should be OK as long as they aren't too many, and as long as
> you don't move them around too much, particularly in post-command-hook
> or some such.
This explanation sounds to me as if the display engine is building
some kind of tree of overlays to find properties changes quickly. Too bad I don't have time to understand this stuff in more detail, it sounds interesting.
- Carsten
next prev parent reply other threads:[~2013-04-11 22:49 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-10 4:02 Enriched/Org is a colorful Org Jambunathan K
2013-04-10 9:54 ` Suvayu Ali
2013-04-10 10:16 ` Carsten Dominik
2013-04-10 10:39 ` Torsten Wagner
2013-04-10 10:48 ` Suvayu Ali
2013-04-10 10:53 ` Carsten Dominik
2013-04-10 11:20 ` Sebastien Vauban
2013-04-10 11:26 ` Carsten Dominik
2013-04-10 12:15 ` Jambunathan K
2013-04-10 11:57 ` Jambunathan K
2013-04-10 16:21 ` Eli Zaretskii
2013-04-10 16:43 ` Jambunathan K
2013-04-10 17:13 ` Eli Zaretskii
2013-04-10 19:58 ` Carsten Dominik
2013-04-10 20:16 ` Sebastien Vauban
2013-04-11 2:58 ` Carsten Dominik
2013-04-11 17:30 ` Eli Zaretskii
2013-04-11 22:49 ` Carsten Dominik [this message]
2013-04-12 6:41 ` Eli Zaretskii
2013-04-12 7:13 ` Carsten Dominik
2013-04-12 8:31 ` Eli Zaretskii
2013-04-12 10:56 ` Carsten Dominik
2013-04-12 11:49 ` Torsten Wagner
2013-04-12 13:03 ` Eli Zaretskii
2013-04-12 18:00 ` Suvayu Ali
2013-04-12 18:38 ` Eli Zaretskii
2013-04-13 10:50 ` Suvayu Ali
2013-04-12 12:36 ` Eli Zaretskii
2013-04-13 12:24 ` Sean O'Halpin
2013-04-13 14:38 ` Jambunathan K
2013-04-13 15:01 ` Eli Zaretskii
2013-04-12 8:35 ` Bastien
2013-04-12 14:45 ` François Pinard
2013-04-18 20:37 ` Samuel Wales
2013-04-11 17:27 ` Eli Zaretskii
2013-04-11 22:46 ` Carsten Dominik
2013-04-10 12:12 ` Jambunathan K
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