From: Dmitry Gutov <dgutov@yandex.ru>
To: Vitalie Spinu <spinuvit@gmail.com>
Cc: Alan Mackenzie <acm@muc.de>, emacs-devel@gnu.org
Subject: Re: Syntax tables for multiple modes [was: bug#22983: syntax-ppss returns wrong result.]
Date: Sun, 20 Mar 2016 04:19:21 +0200 [thread overview]
Message-ID: <fbb84dbe-6f99-9770-17cc-e541ab708803@yandex.ru> (raw)
In-Reply-To: <874mc2dqtk.fsf@gmail.com>
On 03/20/2016 12:51 AM, Vitalie Spinu wrote:
> You can simulate islands by marking inner spans as comments with comment classes
> (11 and 12).
Ooh, that's a solid idea. Should be more generic that my "propertize <>
as punctuation" approach.
> I used those in polymode in the past, but not anymore. It's not
> that useful. Most of the parsing that modes do is regex based.
I'd say it's still useful. Without the above, I've had indentation
problems with sgml-mode.
A good mode would use syntax-ppss to check that point is not inside a
string or comment. Maybe that's not often done in font-lock, but it's at
least common in syntax-propertize and indentation functions.
Example: sgml-lexical-context. It performs a search at first, but in the
end uses parse-partial-sexp, and returns a value based on that status.
> So if a mode
> author decides to regexpf for a wiki link on a full buffer after widening it,
> islands won't help.
Where does widening happens in this case? First, we have
font-lock-dont-widen.
For indentation, we've introduced prog-indentation-context recently. And
indentation functions in programming modes are supposed to call
prog-widen instead of widen now.
syntax-propertize-function's aren't supposed to call widen at all, I think.
> IMO the most useful direction for multi-modes is to add a hard narrowing that
> Stephen mentioned in the other thread. `syntax-ppss-dont-widen` goes in that
> direction, but it doesn't address the issue of distinguishing between user
> narrowing and "hard narrowing" in multi modes.
syntax-ppss-dont-widen and prog-indentation-context will be the
indicators of the "hard narrowing", I guess.
next prev parent reply other threads:[~2016-03-20 2:19 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160311151512.GD2888@acm.fritz.box>
[not found] ` <b158555f-e014-ed7b-23eb-d80d2d77a6f4@yandex.ru>
[not found] ` <20160311212410.GG2888@acm.fritz.box>
[not found] ` <73903215-f94b-e194-7bfe-0d6350c95769@yandex.ru>
[not found] ` <20160311221540.GH2888@acm.fritz.box>
[not found] ` <2c301ec9-041d-9172-d628-479062314b23@yandex.ru>
2016-03-14 15:16 ` Syntax tables for multiple modes [was: bug#22983: syntax-ppss returns wrong result.] Alan Mackenzie
2016-03-14 17:34 ` Andreas Röhler
2016-03-14 20:06 ` Dmitry Gutov
2016-03-19 22:51 ` Vitalie Spinu
2016-03-20 2:19 ` Dmitry Gutov [this message]
2016-03-20 12:15 ` Vitalie Spinu
2016-03-20 15:58 ` Dmitry Gutov
2016-03-21 1:05 ` Vitalie Spinu
2016-03-21 3:11 ` Stefan Monnier
2016-03-21 5:05 ` Vitalie Spinu
2016-03-21 7:13 ` Andreas Röhler
2016-03-21 12:26 ` Stefan Monnier
2016-03-21 14:13 ` Vitalie Spinu
2016-03-21 14:43 ` Stefan Monnier
2016-03-21 16:42 ` Vitalie Spinu
2016-03-21 18:31 ` Stefan Monnier
2016-03-21 19:16 ` Vitalie Spinu
2016-03-21 20:47 ` Stefan Monnier
2016-03-21 20:33 ` Alan Mackenzie
2016-03-21 20:49 ` Stefan Monnier
2016-03-21 21:03 ` Drew Adams
2016-03-21 21:12 ` Dmitry Gutov
2016-03-21 16:45 ` Vitalie Spinu
2016-03-21 22:55 ` Dmitry Gutov
2016-03-22 14:51 ` Stefan Monnier
2016-03-22 18:17 ` Vitalie Spinu
2016-03-23 1:18 ` Dmitry Gutov
2016-03-23 13:18 ` Stefan Monnier
2016-03-22 18:26 ` Vitalie Spinu
2016-03-23 2:07 ` Stefan Monnier
2016-03-23 10:56 ` Vitalie Spinu
2016-03-23 11:41 ` Stefan Monnier
2016-03-23 12:39 ` Vitalie Spinu
2016-03-23 13:23 ` Stefan Monnier
2016-03-23 15:28 ` Dmitry Gutov
2016-03-23 21:51 ` Vitalie Spinu
2016-03-24 7:30 ` Andreas Röhler
2016-03-21 11:56 ` Dmitry Gutov
2016-03-21 5:08 ` [Patch] hard-widen-limits [was Re: Syntax tables for multiple modes [was: bug#22983: syntax-ppss returns wrong result.]] Vitalie Spinu
2016-03-21 12:39 ` Stefan Monnier
2016-03-21 12:54 ` Vitalie Spinu
2016-03-21 14:07 ` Stefan Monnier
2016-03-21 14:14 ` Vitalie Spinu
2016-03-21 14:04 ` Stefan Monnier
2016-03-21 14:33 ` Vitalie Spinu
2016-03-21 14:54 ` Stefan Monnier
2016-03-21 17:16 ` Vitalie Spinu
2016-03-21 18:36 ` Stefan Monnier
2016-03-21 19:18 ` Vitalie Spinu
2016-03-22 3:17 ` Vitalie Spinu
2016-03-22 9:57 ` Vitalie Spinu
2016-03-22 10:05 ` Vitalie Spinu
2016-03-22 11:57 ` Stefan Monnier
2016-03-22 16:28 ` Vitalie Spinu
2016-03-22 16:44 ` Stefan Monnier
2016-03-22 19:36 ` Vitalie Spinu
2016-03-23 2:22 ` Stefan Monnier
2016-03-23 11:41 ` Vitalie Spinu
2016-03-23 12:34 ` Stefan Monnier
2016-03-23 12:41 ` Vitalie Spinu
2016-03-29 21:43 ` Vitalie Spinu
2016-04-22 14:34 ` Dmitry Gutov
2016-04-24 7:22 ` Vitalie Spinu
2016-04-24 7:28 ` Achim Gratz
2016-04-24 11:33 ` Vitalie Spinu
2016-04-24 13:20 ` Andreas Schwab
2016-04-24 16:11 ` Vitalie Spinu
2016-04-24 16:19 ` Andreas Schwab
2016-04-24 16:41 ` Vitalie Spinu
2016-04-24 16:48 ` Andreas Schwab
2016-04-24 18:01 ` Vitalie Spinu
2016-04-24 19:05 ` Andreas Schwab
2016-04-28 13:29 ` Vitalie Spinu
2016-04-30 14:06 ` Stefan Monnier
2016-03-22 20:08 ` Richard Stallman
2016-03-22 22:45 ` Vitalie Spinu
2016-03-21 11:47 ` Syntax tables for multiple modes [was: bug#22983: syntax-ppss returns wrong result.] Dmitry Gutov
2016-03-21 12:40 ` Vitalie Spinu
2016-03-21 13:07 ` Dmitry Gutov
2016-03-21 14:20 ` Vitalie Spinu
2016-03-21 14:29 ` Dmitry Gutov
2016-03-21 14:42 ` Vitalie Spinu
2016-03-21 14:56 ` Dmitry Gutov
2016-03-21 16:52 ` Vitalie Spinu
2016-03-21 21:30 ` Dmitry Gutov
2016-04-03 23:34 ` John Wiegley
2016-03-21 14:02 ` Stefan Monnier
2016-03-21 14:31 ` Vitalie Spinu
2016-03-21 15:06 ` Stefan Monnier
2016-03-21 17:15 ` Andreas Röhler
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