From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Eli Zaretskii <eliz@gnu.org>
Cc: dak@gnu.org, emacs-devel@gnu.org
Subject: Re: Aborting display. Is this possible?
Date: Tue, 21 Oct 2014 12:27:51 -0400 [thread overview]
Message-ID: <jwvy4s9gzun.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83zjcpa11g.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 21 Oct 2014 18:35:23 +0300")
> So I suggest to turn the table and ask: how come fontification of C
> sources is so expensive, and how can we make it faster?
Indeed, that'd be better. But IIUC Alan has already been working fairly
hard to make CC-mode's parsing faster. So my guess is that either it's
just really hard because of some details of the C language, or we'd need
a serious restructuring/rewrite and I don't think anyone is up for that.
> IOW, if the measurements show that redisplay takes 10% of the time,
> let's not try to optimize those 10%, but instead concentrate on the
> 90%.
There's some general pressure to improve font-locking by making it more
precise, with somewhat marginal improvements but fairly high
processing costs (pushed to the extreme, this involves passing the text
to an external toolchain that parses and type-checks and returns to
Emacs the precise highlighting info; see for example agda-mode).
So, maybe we're looking at a future where we'll need to provide some way
for delayed/asynchronous font-lock refinement.
Stefan
next prev parent reply other threads:[~2014-10-21 16:27 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-19 14:17 Aborting display. Is this possible? Alan Mackenzie
2014-10-19 14:32 ` David Kastrup
2014-10-19 14:54 ` Eli Zaretskii
2014-10-19 14:50 ` Eli Zaretskii
2014-10-19 15:42 ` Alan Mackenzie
2014-10-19 18:09 ` Eli Zaretskii
2014-10-20 11:09 ` Alan Mackenzie
2014-10-20 11:30 ` David Kastrup
2014-10-20 12:00 ` Alan Mackenzie
2014-10-20 15:15 ` Eli Zaretskii
2014-10-20 15:12 ` Eli Zaretskii
2014-10-20 16:56 ` Stefan Monnier
2014-10-20 17:10 ` Eli Zaretskii
2014-10-20 17:40 ` Eli Zaretskii
2014-10-20 18:57 ` Alan Mackenzie
2014-10-20 19:24 ` Eli Zaretskii
2014-10-20 21:08 ` Alan Mackenzie
2014-10-21 8:09 ` David Kastrup
2014-10-21 10:58 ` Alan Mackenzie
2014-10-21 11:04 ` David Kastrup
2014-10-21 14:25 ` Stefan Monnier
2014-10-21 14:01 ` Stefan Monnier
2014-10-21 15:35 ` Eli Zaretskii
2014-10-21 16:27 ` Stefan Monnier [this message]
2014-10-22 18:28 ` Stephen Leake
2014-10-22 20:10 ` Stefan Monnier
2014-10-21 17:14 ` Alan Mackenzie
2014-10-21 18:00 ` Eli Zaretskii
2014-10-21 18:38 ` Alan Mackenzie
2014-10-21 18:43 ` Eli Zaretskii
2014-10-21 19:42 ` Eli Zaretskii
2014-10-26 12:43 ` Unfreezing the display during auto-repeated scrolling. [ Was: Aborting display. Is this possible? ] Alan Mackenzie
2014-10-26 16:45 ` Eli Zaretskii
2014-10-26 20:03 ` Alan Mackenzie
2014-10-26 20:20 ` Eli Zaretskii
2014-10-26 20:42 ` Stefan Monnier
2014-10-26 22:15 ` Unfreezing the display during auto-repeated scrolling Alan Mackenzie
2014-10-27 1:03 ` Stefan Monnier
2014-10-27 14:28 ` Unfreezing the display during auto-repeated scrolling. Simpler approach Alan Mackenzie
2014-10-27 16:51 ` Eli Zaretskii
2014-10-27 19:13 ` David Engster
2014-10-27 19:26 ` Eli Zaretskii
2014-10-27 19:36 ` David Engster
2014-10-27 19:38 ` Alan Mackenzie
2014-10-27 21:38 ` Stefan Monnier
2014-10-28 18:10 ` Alan Mackenzie
2014-10-29 0:57 ` Stefan Monnier
2014-10-29 14:14 ` Eli Zaretskii
2014-10-29 14:52 ` Alan Mackenzie
2014-10-29 15:37 ` Eli Zaretskii
2014-10-29 16:59 ` Stefan Monnier
2014-10-29 21:25 ` Alan Mackenzie
2014-10-30 1:49 ` Stefan Monnier
2014-10-30 22:09 ` Alan Mackenzie
2014-10-31 3:06 ` Stefan Monnier
2014-10-31 7:55 ` Eli Zaretskii
2014-10-31 14:04 ` Stefan Monnier
2014-11-21 15:44 ` Alan Mackenzie
2014-11-23 9:51 ` Tassilo Horn
2014-11-23 10:40 ` Alan Mackenzie
2014-11-23 19:44 ` Tassilo Horn
2014-11-23 22:04 ` Alan Mackenzie
2014-11-24 11:34 ` Tassilo Horn
2014-11-24 11:53 ` David Kastrup
2014-11-24 16:00 ` Alan Mackenzie
2014-11-24 14:37 ` Stefan Monnier
2014-11-24 16:08 ` Alan Mackenzie
2014-11-24 17:44 ` Stefan Monnier
2014-10-27 3:36 ` Unfreezing the display during auto-repeated scrolling Eli Zaretskii
2014-10-27 10:05 ` Alan Mackenzie
2014-10-27 16:48 ` Eli Zaretskii
2014-10-27 22:46 ` Alan Mackenzie
2014-10-28 0:22 ` Stefan Monnier
2014-10-27 3:33 ` Unfreezing the display during auto-repeated scrolling. [ Was: Aborting display. Is this possible? ] Eli Zaretskii
2014-10-21 18:01 ` Aborting display. Is this possible? Stefan Monnier
2014-10-21 15:40 ` Eli Zaretskii
2014-10-21 17:00 ` Michael Welsh Duggan
2014-10-21 18:25 ` Alan Mackenzie
2014-10-20 1:59 ` Stefan Monnier
2014-10-20 2:45 ` Eli Zaretskii
-- strict thread matches above, loose matches on Subject: below --
2014-10-20 17:18 grischka
2014-10-20 17:23 ` Eli Zaretskii
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