From: Alan Mackenzie <acm@muc.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: CC Mode with font-lock-maximum-decoration 2
Date: Tue, 9 Aug 2022 16:36:04 +0000 [thread overview]
Message-ID: <YvKM9NF2e9v9yUmO@ACM> (raw)
In-Reply-To: <838rnxvdcq.fsf@gnu.org>
Hello, Eli.
On Tue, Aug 09, 2022 at 14:57:25 +0300, Eli Zaretskii wrote:
> > Date: Tue, 9 Aug 2022 11:24:20 +0000
> > Cc: emacs-devel@gnu.org
> > From: Alan Mackenzie <acm@muc.de>
> > Hello, Eli.
> > On Tue, Aug 09, 2022 at 14:07:33 +0300, Eli Zaretskii wrote:
> > > > Date: Tue, 9 Aug 2022 08:00:16 +0000
> > > > Cc: emacs-devel@gnu.org
> > > > From: Alan Mackenzie <acm@muc.de>
> > > > > > > Then what is the importance of these measurements of yours?
> > > > > > They show that an attempt to speed up CC Mode/2 should be concentrating
> > > > > > on the code which isn't fontification code.
> > > > > Please elaborate on this conclusion, because I don't think I
> > > > > understand how you arrived at it, based on your measurements. With
> > > > > the default value of font-lock-maximum-decoration, the fontifications
> > > > > are also very slow, relatively to other modes.
> > > > I mean CC Mode with font-lock-maximum-decoration = 2, particularly. The
> > > > fontification in this setup is not slow (72% of Emacs Lisp Mode's
> > > > speed). The setup as a whole is not fast enough. Therefore to speed it
> > > > up, fontification is not the aspect to concentrate on.
> > > But if we will never recommend using level 2, those conclusions are
> > > again of no practical value for our users. Right?
> > I don't agree. If there is some place in our documentation to do it,
> > then we should recommend level 2 for those, like you, who want rapid
> > response, and level 3 for those, like me, who want accurate
> > fontification. It's a simple (or complicated) user choice.
> We are not talking about my personal customizations, we are talking
> about what CC Mode does by default. If we'd changed the default to be
> level 2 for CC Mode, I could understand your line of reasoning. But
> since you don't think this should be the default, I say what CC Mode
> does at level 2 is not of practical importance for making CC Mode fast
> enough.
Fast enough for what? CC Mode at level 3 is fast enough for many,
probably most, users. Over the years there've been fewer complaints
about speed than correctness, and most of these have been in connection
with unusual files. There's never any objection to more speed, but for
those who really want instantaneous response, there is level 2, or even
level 1, and beyond that, fundamental-mode.
> > You have stated that CC Mode with level 2 is not fast enough. I intend
> > to make this (what I call CC Mode/2) faster.
> That factoid doesn't do anything for making CC Mode faster for our
> users, even if you assume that I personally will use that level.
This is the old argument that users can't change settings from their
defaults. I do assume that you use level 2 when you're a user (as
distinct from the maintainer). Am I right?
--
Alan Mackenzie (Nuremberg, Germany).
next prev parent reply other threads:[~2022-08-09 16:36 UTC|newest]
Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-06 20:13 Major modes using `widen' is a good, even essential, programming practice Alan Mackenzie
2022-08-06 21:05 ` Stefan Monnier
2022-08-07 6:03 ` Eli Zaretskii
2022-08-07 13:31 ` Gregory Heytings
2022-08-07 14:13 ` Alan Mackenzie
2022-08-07 14:20 ` Eli Zaretskii
2022-08-07 14:59 ` Alan Mackenzie
2022-08-07 15:13 ` Eli Zaretskii
2022-08-07 17:01 ` Alan Mackenzie
2022-08-07 17:23 ` Eli Zaretskii
2022-08-07 17:53 ` Dmitry Gutov
2022-08-07 18:00 ` Eli Zaretskii
2022-08-07 18:05 ` Dmitry Gutov
2022-08-07 18:37 ` Eli Zaretskii
2022-08-07 23:02 ` Stefan Monnier
2022-08-07 18:49 ` Óscar Fuentes
2022-08-07 18:59 ` Eli Zaretskii
2022-08-07 18:56 ` Lars Ingebrigtsen
2022-08-07 19:20 ` Alan Mackenzie
2022-08-07 19:26 ` Dmitry Gutov
2022-08-08 2:36 ` Eli Zaretskii
2022-08-08 9:58 ` Alan Mackenzie
2022-08-08 11:39 ` Eli Zaretskii
2022-08-08 15:05 ` CC Mode with font-lock-maximum-decoration 2 [Was Major modes using `widen' is a good, even essential, programming practice.] Alan Mackenzie
2022-08-08 15:51 ` Gregory Heytings
2022-08-08 16:05 ` CC Mode with font-lock-maximum-decoration 2 Alan Mackenzie
2022-08-08 16:50 ` Gregory Heytings
2022-08-09 19:49 ` Gregory Heytings
2022-08-08 17:15 ` CC Mode with font-lock-maximum-decoration 2 [Was Major modes using `widen' is a good, even essential, programming practice.] Eli Zaretskii
2022-08-08 17:41 ` Eli Zaretskii
2022-08-08 18:41 ` CC Mode with font-lock-maximum-decoration 2 Alan Mackenzie
2022-08-08 18:51 ` Eli Zaretskii
2022-08-08 19:09 ` Alan Mackenzie
2022-08-09 2:24 ` Eli Zaretskii
2022-08-09 8:00 ` Alan Mackenzie
2022-08-09 11:07 ` Eli Zaretskii
2022-08-09 11:24 ` Alan Mackenzie
2022-08-09 11:57 ` Eli Zaretskii
2022-08-09 16:36 ` Alan Mackenzie [this message]
2022-08-09 16:59 ` Eli Zaretskii
2022-08-09 17:43 ` Alan Mackenzie
2022-08-09 17:55 ` Eli Zaretskii
2022-08-10 0:22 ` Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2) Lynn Winebarger
2022-08-10 2:14 ` Po Lu
2022-08-10 2:42 ` Eli Zaretskii
2022-08-10 10:05 ` Lynn Winebarger
2022-08-10 10:49 ` Po Lu
2022-08-10 11:31 ` Eli Zaretskii
2022-08-12 12:37 ` Lynn Winebarger
2022-08-12 12:50 ` Eli Zaretskii
2022-08-12 21:50 ` Ideal performance of ELisp (was: Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2)) Stefan Monnier
2022-08-12 23:26 ` Lynn Winebarger
2022-08-13 2:11 ` Ideal performance of ELisp Stefan Monnier
2022-08-13 10:51 ` Lynn Winebarger
2022-08-13 11:13 ` Lynn Winebarger
2022-08-13 14:07 ` Stefan Monnier
2022-08-13 14:56 ` Lynn Winebarger
2022-08-16 16:46 ` Lynn Winebarger
2022-08-16 17:22 ` Stefan Monnier
2022-08-17 12:41 ` Lynn Winebarger
2022-08-17 14:04 ` Stefan Monnier
2022-08-17 14:19 ` Mattias Engdegård
2022-08-17 22:18 ` Stefan Monnier
2022-08-17 14:25 ` Lynn Winebarger
2022-08-13 4:39 ` Ideal performance of ELisp (was: Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2)) Ihor Radchenko
2022-08-13 7:45 ` Ideal performance of ELisp Philip Kaludercic
2022-08-13 11:58 ` Ihor Radchenko
2022-08-13 14:15 ` Stefan Monnier
2022-08-14 9:25 ` Andrea Corallo
2022-08-14 9:34 ` Ihor Radchenko
2022-08-14 13:01 ` Eli Zaretskii
2022-08-16 19:23 ` Andrea Corallo
2022-08-14 13:01 ` Stefan Monnier
2022-08-16 8:59 ` Andrea Corallo
2022-08-16 9:50 ` Ihor Radchenko
2022-08-16 18:21 ` Andrea Corallo
2022-08-17 9:48 ` Ihor Radchenko
2022-08-17 12:02 ` Eli Zaretskii
2022-08-16 15:06 ` Lynn Winebarger
2022-08-16 18:24 ` Andrea Corallo
2022-08-17 13:04 ` Lynn Winebarger
2022-08-17 14:18 ` Andrea Corallo
2022-08-18 12:17 ` Lynn Winebarger
2022-08-12 16:00 ` Why tree-sitter instead of Semantic? (was Re: CC Mode with font-lock-maximum-decoration 2) Akib Azmain Turja
2022-08-12 19:06 ` tomas
2022-08-13 4:41 ` Akib Azmain Turja
2022-08-13 5:14 ` tomas
2022-08-13 11:57 ` Lynn Winebarger
2022-08-13 14:28 ` Akib Azmain Turja
2022-08-14 19:24 ` Eric Ludlam
2022-08-16 10:42 ` Lynn Winebarger
2022-08-17 1:56 ` Eric Ludlam
2022-08-10 17:03 ` Tassilo Horn
2022-08-13 14:40 ` Jostein Kjønigsen
2022-08-14 1:23 ` Po Lu
2022-08-16 9:06 ` Lynn Winebarger
2022-08-16 11:05 ` Po Lu
2022-08-16 11:41 ` Eli Zaretskii
2022-08-16 16:33 ` Lynn Winebarger
2022-08-16 17:19 ` Stefan Monnier
2022-08-16 17:40 ` Lynn Winebarger
2022-08-17 1:41 ` Eric Ludlam
2022-08-18 12:34 ` Lynn Winebarger
2022-08-20 13:15 ` Eric Ludlam
2022-08-08 18:20 ` CC Mode with font-lock-maximum-decoration 2 Alan Mackenzie
2022-08-07 20:17 ` Major modes using `widen' is a good, even essential, programming practice Gregory Heytings
2022-08-07 20:46 ` Alan Mackenzie
2022-08-07 20:53 ` Gregory Heytings
2022-08-08 2:37 ` Eli Zaretskii
2022-08-08 10:33 ` Alan Mackenzie
2022-08-08 11:41 ` Eli Zaretskii
2022-08-07 23:21 ` Stefan Monnier
2022-08-08 2:29 ` Eli Zaretskii
2022-08-08 9:25 ` Stefan Monnier
2022-08-08 11:16 ` Lynn Winebarger
2022-08-08 11:47 ` Eli Zaretskii
2022-08-08 14:24 ` Lynn Winebarger
2022-08-08 11:30 ` Eli Zaretskii
2022-08-08 12:05 ` Stefan Monnier
2022-08-08 12:40 ` Eli Zaretskii
2022-08-08 17:22 ` Stefan Monnier
2022-08-08 17:34 ` Eli Zaretskii
2022-08-08 21:16 ` Dmitry Gutov
2022-08-09 11:30 ` Eli Zaretskii
2022-08-09 14:38 ` Dmitry Gutov
2022-08-09 16:12 ` Eli Zaretskii
2022-08-09 16:52 ` Dmitry Gutov
2022-08-09 17:05 ` Eli Zaretskii
2022-08-09 18:52 ` Dmitry Gutov
2022-08-09 19:46 ` Gregory Heytings
2022-08-08 10:38 ` Alan Mackenzie
2022-08-08 11:49 ` Eli Zaretskii
2022-08-08 10:41 ` Gregory Heytings
2022-08-07 17:57 ` Dmitry Gutov
2022-08-22 11:26 ` Alan Mackenzie
2022-08-22 23:59 ` Dmitry Gutov
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