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From: Drew Adams <drew.adams@oracle.com>
To: Dmitry Gutov <dgutov@yandex.ru>, Alan Mackenzie <acm@muc.de>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: RE: forward-comment and syntax-ppss
Date: Thu, 15 Dec 2016 18:06:09 -0800 (PST)	[thread overview]
Message-ID: <b258e8f2-a27c-4346-bffa-0243088a2f6b@default> (raw)
In-Reply-To: <51c0554f-40d0-37a5-b134-17058343aa3f@yandex.ru>

> From where I'm standing, the things you use it for (hide
> buffer contents)

No.  Narrowing is not used to "hide buffer contents".  That's not
the point of narrowing, even if it is one effect.  It's used to
make some buffer contents inaccessible to certain (many, typical,
ordinary) operations.  It is not just you who does not see parts
of the buffer; it is also Emacs features that do not perceive
them.

> can be implemented in a much better fashion using overlays
> with invisibility (in fact, one such implementation exists
> already),

No.  It's not about invisibility.  Overlays do not offer
anything that comes close to replacing or simulating the
effect of narrowing.

> which don't introduce the difficulties of changing point-min and
> point-max. 

What difficulties?  What's hard about changing those?

That's the essential design of narrowing - the entire point
of it: change `point-min' and `point-max'.  If you're not
doing that then you are not in any way giving users (and
code) any kind of a replacement for narrowing.  And if you
are doing that then, well, you're narrowing the buffer.

At the base, narrowing is nothing more than binding the
meanings/behavior of `point-min' and `point-max'.

> Thus, without making things harder for many other facilities.

No one has given an example of how narrowing makes things
hard "for many other facilities" - or even for one facility.



  reply	other threads:[~2016-12-16  2:06 UTC|newest]

Thread overview: 299+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-28 19:50 Preview: portable dumper Daniel Colascione
2016-11-28 19:58 ` Burton Samograd
2016-11-28 20:11   ` Daniel Colascione
2016-11-28 20:12 ` Eli Zaretskii
2016-11-28 20:14   ` Daniel Colascione
2016-11-28 20:16     ` Daniel Colascione
2016-11-28 20:29     ` Eli Zaretskii
2016-11-28 20:20   ` John Wiegley
2016-11-28 20:22     ` Daniel Colascione
2016-11-28 20:26       ` John Wiegley
2016-11-28 20:31         ` Daniel Colascione
2016-11-28 20:37           ` Burton Samograd
2016-11-28 20:44             ` Daniel Colascione
2016-11-29 16:02               ` Ted Zlatanov
2016-11-29 17:58                 ` Daniel Colascione
2016-11-29 16:48               ` Richard Stallman
2016-11-29 17:32                 ` Daniel Colascione
2016-11-29 19:55                   ` Philippe Vaucher
2016-11-29 17:43                 ` Eli Zaretskii
2016-11-29 17:49                   ` Daniel Colascione
2016-11-29 18:17                     ` Eli Zaretskii
2016-11-29 18:03                   ` John Wiegley
2016-11-29 18:23                     ` Eli Zaretskii
2016-11-29 18:49                       ` Daniel Colascione
2016-11-29 19:02                         ` Eli Zaretskii
2016-12-01  9:18                         ` Richard Stallman
2016-12-01 18:11                           ` Eli Zaretskii
2016-12-02  4:28                             ` Ken Raeburn
2016-12-02  4:41                               ` Daniel Colascione
2016-12-02  8:08                                 ` Eli Zaretskii
2016-12-02  8:03                               ` Eli Zaretskii
2016-12-02 17:24                                 ` Ken Raeburn
2016-11-28 20:39           ` John Wiegley
2016-11-28 20:34         ` Burton Samograd
2016-11-28 20:31     ` Eli Zaretskii
2016-11-28 20:21   ` Paul Eggert
2016-11-28 20:34     ` Eli Zaretskii
2016-11-28 20:47       ` John Wiegley
2016-11-28 21:14         ` Eli Zaretskii
2016-11-28 21:55           ` Daniel Colascione
2016-11-28 22:18           ` John Wiegley
2016-11-29 18:40             ` Eli Zaretskii
2016-11-29 19:11               ` John Wiegley
2016-11-29 20:07                 ` Eli Zaretskii
2016-11-29 20:29                   ` John Wiegley
2016-11-29 20:36                     ` Daniel Colascione
2016-11-29 21:30                       ` John Wiegley
2016-11-30  8:26                       ` Philippe Vaucher
2016-11-29 19:12               ` Daniel Colascione
2016-11-29 16:55   ` Richard Stallman
2016-11-29 18:39     ` Eli Zaretskii
2016-11-29 19:03       ` Daniel Colascione
2016-11-29 19:59         ` Eli Zaretskii
2016-11-29 20:28           ` John Wiegley
2016-11-29 19:13       ` Paul Eggert
2016-11-29 19:35         ` Eli Zaretskii
2016-11-29 20:54           ` Paul Eggert
2016-11-30 16:38             ` Eli Zaretskii
2016-11-30 18:57               ` John Wiegley
2016-11-30 19:14                 ` Daniel Colascione
2016-11-30 21:03                   ` John Wiegley
2016-11-30 21:06                     ` Paul Eggert
2016-11-30 21:44                       ` John Wiegley
2016-12-01  3:32                       ` Eli Zaretskii
2016-12-01  9:16                         ` Paul Eggert
2016-12-01 17:26                           ` Eli Zaretskii
2016-12-01 17:35                             ` Daniel Colascione
2016-12-01 17:58                             ` Paul Eggert
2016-11-30 21:35                     ` Daniel Colascione
2016-11-30 21:44                       ` John Wiegley
2016-11-30 21:50                         ` Daniel Colascione
2016-11-30 22:20                           ` John Wiegley
2016-12-01  1:37                           ` Paul Eggert
2016-12-01  1:45                             ` Daniel Colascione
2016-12-01  3:47                           ` Eli Zaretskii
2016-12-01  4:10                             ` John Wiegley
2016-12-01  4:12                               ` Daniel Colascione
2016-12-01  4:49                                 ` John Wiegley
2016-12-01  5:12                                   ` Daniel Colascione
2016-12-01  9:03                                     ` Matt Armstrong
2016-12-02  8:10                                       ` John Wiegley
2016-12-01  9:18                                     ` Phillip Lord
2016-12-01  4:10                             ` Daniel Colascione
2016-12-01  3:41                         ` Eli Zaretskii
2016-11-30 19:29                 ` Philippe Vaucher
2016-11-30 19:45                   ` Daniel Colascione
2016-11-30 21:06               ` Paul Eggert
2016-12-01  9:18       ` Richard Stallman
2016-12-01 18:09         ` Eli Zaretskii
2016-12-02  2:18           ` Stefan Monnier
2016-12-02  7:54             ` Eli Zaretskii
2016-12-02  8:08               ` John Wiegley
2016-12-02  8:59                 ` Eli Zaretskii
2016-12-02 19:39                   ` John Wiegley
2016-12-02 20:11                     ` Karl Fogel
2016-12-02 21:22                       ` Daniel Colascione
2016-12-02 22:06                         ` Eli Zaretskii
2016-12-02 23:15                         ` Karl Fogel
2016-12-15 14:28                         ` Philippe Vaucher
2017-10-18 23:36                           ` Kaushal Modi
2017-10-19 10:12                             ` Jeremie Courreges-Anglas
2018-02-12 20:18                               ` Daniel Colascione
2018-02-13 16:37                                 ` Eli Zaretskii
2018-02-14 21:03                                   ` Philipp Stephani
2018-02-15  0:42                                     ` Daniel Colascione
2018-02-15 23:31                                   ` Ken Brown
2018-02-15 23:36                                     ` Daniel Colascione
2018-02-16  1:56                                       ` Ken Brown
2018-02-16  2:36                                         ` Daniel Colascione
2018-02-17 23:38                                           ` Ken Brown
2018-02-17 23:59                                             ` Ken Brown
2018-02-18  0:02                                             ` Daniel Colascione
2018-02-19 13:30                                               ` Ken Brown
2018-02-19 17:03                                                 ` Daniel Colascione
2018-02-19 22:33                                                   ` Ken Brown
2018-02-20 16:32                                                     ` Ken Brown
2018-02-20 17:23                                                       ` Daniel Colascione
2018-02-20  1:16                                                   ` Andy Moreton
2018-02-17  1:01                                   ` Clément Pit-Claudel
2018-02-19 17:06                                     ` Daniel Colascione
2018-02-19 22:00                                       ` Clément Pit-Claudel
2018-02-17 11:53                                   ` Charles A. Roelli
2018-02-17 12:09                                     ` Alan Third
2018-02-17 14:12                                       ` Charles A. Roelli
2018-02-20  0:54                                   ` Andy Moreton
2018-02-15  4:28                                 ` Stefan Monnier
2018-02-15 22:13                                   ` Daniel Colascione
2018-02-15 22:30                                     ` Paul Eggert
2018-02-15 22:35                                       ` Daniel Colascione
2018-02-15 22:56                                         ` Paul Eggert
2018-02-15 22:35                                     ` Paul Eggert
2018-02-15 18:34                                 ` andres.ramirez
2018-02-19 22:01                                 ` Daniele Nicolodi
2018-02-20  0:28                                   ` Daniel Colascione
2016-12-02 22:06                       ` Eli Zaretskii
2016-12-02 22:28                         ` Daniel Colascione
2016-12-03  8:48                           ` Eli Zaretskii
2016-12-03  9:34                             ` Daniel Colascione
2016-12-03 12:47                               ` Eli Zaretskii
2016-12-03 14:36                                 ` Alan Mackenzie
2016-12-03 15:11                                   ` Eli Zaretskii
2016-12-04 12:20                                     ` Alan Mackenzie
2016-12-04 12:48                                       ` Dmitry Gutov
2016-12-04 15:53                                       ` Eli Zaretskii
2016-12-03 17:36                                   ` Daniel Colascione
2016-12-03 17:40                                     ` Dmitry Gutov
2016-12-03 21:09                                       ` Stefan Monnier
2016-12-03 21:31                                         ` Daniel Colascione
2016-12-04  4:25                                           ` Stefan Monnier
2016-12-04 12:34                                         ` Alan Mackenzie
2016-12-04 12:51                                           ` Dmitry Gutov
2016-12-04 14:08                                           ` Stefan Monnier
2016-12-04 15:22                                             ` Alan Mackenzie
2016-12-04 22:24                                             ` forward-comment and syntax-ppss (was: Preview: portable dumper) Stefan Monnier
2016-12-06 19:55                                               ` Alan Mackenzie
2016-12-06 22:56                                                 ` forward-comment and syntax-ppss Stefan Monnier
2016-12-07  6:55                                                   ` Andreas Röhler
2016-12-07 14:01                                                     ` Stefan Monnier
2016-12-07 14:49                                                       ` Andreas Röhler
2016-12-07 14:53                                                         ` Clément Pit--Claudel
2016-12-07 22:04                                                           ` Alan Mackenzie
2016-12-07 22:23                                                             ` Clément Pit--Claudel
2016-12-08 19:31                                                               ` Alan Mackenzie
2016-12-08 19:54                                                                 ` Clément Pit--Claudel
2016-12-09  8:37                                                                   ` Eli Zaretskii
2016-12-08  2:32                                                             ` Stefan Monnier
2016-12-08 20:15                                                               ` Alan Mackenzie
2016-12-08 20:34                                                                 ` Clément Pit--Claudel
2016-12-08 21:25                                                                   ` Dmitry Gutov
2016-12-08 21:35                                                                   ` Stefan Monnier
2016-12-08 21:13                                                                 ` Stefan Monnier
2016-12-09 18:00                                                                   ` Alan Mackenzie
2016-12-09 18:47                                                                     ` Stefan Monnier
2016-12-09 22:33                                                                       ` Clément Pit--Claudel
2016-12-09 23:09                                                                         ` Alan Mackenzie
2016-12-10  6:56                                                                         ` Eli Zaretskii
2016-12-10 18:39                                                                       ` Andreas Röhler
2016-12-08 21:24                                                                 ` Dmitry Gutov
2016-12-08 21:47                                                                   ` Stefan Monnier
2016-12-09  7:39                                                                     ` Andreas Röhler
2016-12-09 19:07                                                                   ` Alan Mackenzie
2016-12-09 23:30                                                                     ` Dmitry Gutov
2016-12-11  0:24                                                                       ` Stefan Monnier
2016-12-11 10:17                                                                       ` Alan Mackenzie
2016-12-11 10:40                                                                         ` Andreas Röhler
2016-12-16  1:33                                                                         ` Dmitry Gutov
2016-12-16  2:06                                                                           ` Drew Adams [this message]
2016-12-16  8:12                                                                             ` Eli Zaretskii
2016-12-16 12:32                                                                             ` Dmitry Gutov
2016-12-16 16:22                                                                               ` Drew Adams
2016-12-16 19:14                                                                                 ` Dmitry Gutov
2016-12-16 23:16                                                                                   ` Drew Adams
2016-12-17  0:08                                                                                     ` Dmitry Gutov
2016-12-16 19:25                                                                               ` Alan Mackenzie
2016-12-16 20:06                                                                                 ` Dmitry Gutov
2016-12-16 23:16                                                                                   ` Drew Adams
2016-12-17  0:42                                                                                     ` Dmitry Gutov
2016-12-17  1:30                                                                                       ` Drew Adams
2016-12-17  1:40                                                                                         ` Stefan Monnier
2016-12-17  2:26                                                                                           ` Drew Adams
2016-12-17 14:37                                                                                             ` Stefan Monnier
2016-12-16 14:24                                                                             ` Clément Pit--Claudel
2016-12-16 16:22                                                                               ` Drew Adams
2016-12-16 19:50                                                                                 ` Clément Pit--Claudel
2016-12-16 23:16                                                                                   ` Drew Adams
2016-12-17  2:39                                                                                     ` Clément Pit--Claudel
2016-12-17  4:50                                                                                       ` Wording of the Elisp manuals (was: forward-comment and syntax-ppss) Marcin Borkowski
2016-12-20  9:22                                                                                         ` Wording of the Elisp manuals Michael Heerdegen
2016-12-20 10:52                                                                                         ` Wording of the Elisp manuals (was: forward-comment and syntax-ppss) Jean-Christophe Helary
2016-12-20 16:01                                                                                           ` Eli Zaretskii
     [not found]                                                                             ` <<83oa0c8f7r.fsf@gnu.org>
2016-12-16 16:22                                                                               ` forward-comment and syntax-ppss Drew Adams
2016-12-16 21:00                                                                                 ` Eli Zaretskii
     [not found]                                                                                 ` <<8337hn8u81.fsf@gnu.org>
2016-12-16 23:16                                                                                   ` Drew Adams
2016-12-16 20:06                                                                           ` Alan Mackenzie
2016-12-16 22:08                                                                             ` Dmitry Gutov
2016-12-16 23:08                                                                               ` Stefan Monnier
2016-12-17  0:18                                                                                 ` Dmitry Gutov
2016-12-17  7:37                                                                                   ` Marcin Borkowski
2016-12-17  7:42                                                                                 ` Eli Zaretskii
2016-12-17 14:41                                                                                   ` Stefan Monnier
2016-12-17 14:49                                                                                     ` Eli Zaretskii
2016-12-17 15:09                                                                                       ` Lars Ingebrigtsen
2016-12-18 20:08                                                                                         ` Dmitry Gutov
2017-02-05 23:33                                                                                         ` Drew Adams
2016-12-17 15:38                                                                                       ` Stefan Monnier
2016-12-19  2:31                                                                                         ` Dmitry Gutov
2016-12-19 13:12                                                                                           ` Stefan Monnier
2016-12-19 13:34                                                                                             ` Dmitry Gutov
2016-12-19 14:17                                                                                               ` Stefan Monnier
2016-12-19 23:16                                                                                                 ` Dmitry Gutov
2016-12-20 13:33                                                                                                   ` Stefan Monnier
2017-11-29 23:48                                                                                                     ` multi-modes and widen (again), was: " Dmitry Gutov
2017-11-30 13:05                                                                                                       ` Stefan Monnier
2017-12-01 23:57                                                                                                         ` Dmitry Gutov
2016-12-16 23:16                                                                               ` Drew Adams
2016-12-09  8:35                                                                 ` Eli Zaretskii
2016-12-09 17:08                                                                   ` Alan Mackenzie
2016-12-09 17:22                                                                     ` Eli Zaretskii
2016-12-09 21:55                                                                       ` Richard Stallman
2016-12-03 21:31                                   ` Preview: portable dumper Richard Stallman
2016-12-04 12:41                                     ` Alan Mackenzie
2016-12-03 17:41                                 ` Paul Eggert
2016-12-03 19:49                                   ` Eli Zaretskii
2016-12-03 21:30                                 ` Richard Stallman
2016-12-04  3:31                                   ` Eli Zaretskii
2016-12-04 23:03                                     ` Richard Stallman
2016-12-03 17:24                               ` Paul Eggert
2016-12-03 15:56                             ` Stefan Monnier
2016-12-03 21:31                               ` Richard Stallman
2016-12-04 23:05                             ` Richard Stallman
2016-12-02 22:29                         ` John Wiegley
2016-12-03 21:28                         ` Richard Stallman
2016-12-04 15:57                           ` Eli Zaretskii
2016-12-04 17:12                             ` Daniel Colascione
2016-12-04 23:07                               ` Richard Stallman
2016-12-05  0:24                                 ` Daniel Colascione
2016-12-06 10:38                               ` Philippe Vaucher
2016-12-02  9:00               ` Philippe Vaucher
2016-12-02 10:56                 ` Eli Zaretskii
2017-05-26 19:48                   ` Thien-Thi Nguyen
2017-05-26 20:26                     ` Kaushal Modi
2017-05-27  7:27                       ` Thien-Thi Nguyen
2016-12-02 13:04               ` Stefan Monnier
2016-12-02 14:45                 ` Eli Zaretskii
2016-12-02 14:51                   ` Stefan Monnier
2016-12-02 22:24                     ` Richard Stallman
2016-12-02 23:32                       ` Stefan Monnier
2016-12-03  8:28                       ` Eli Zaretskii
2016-12-02 23:42                     ` Paul Eggert
2016-12-02 15:38                   ` Daniel Colascione
2016-12-02 17:26                   ` Ken Raeburn
2016-12-02 17:47                     ` Paul Eggert
     [not found]                   ` <<jwvlgvyv10x.fsf-monnier+Inbox@gnu.org>
     [not found]                     ` <<E1cCwGF-0002PT-Kq@fencepost.gnu.org>
2016-12-03  0:07                       ` Drew Adams
2016-12-03  8:25                         ` Eli Zaretskii
2016-12-03 20:40                           ` Joost Kremers
2016-12-03 21:30                         ` Richard Stallman
     [not found]                   ` <<<jwvlgvyv10x.fsf-monnier+Inbox@gnu.org>
     [not found]                     ` <<<E1cCwGF-0002PT-Kq@fencepost.gnu.org>
     [not found]                       ` <<2b63d48d-a678-49c2-a3a9-4f91d8d8bdb4@default>
     [not found]                         ` <<8337i5mnb5.fsf@gnu.org>
2016-12-03 16:14                           ` Drew Adams
2016-12-03 16:42                             ` Eli Zaretskii
2016-12-02 14:27           ` Richard Stallman
2016-11-28 21:14 ` Paul Eggert
2016-11-28 23:01 ` Stefan Monnier
2016-11-28 23:17   ` Daniel Colascione
2016-11-29 13:06     ` Stefan Monnier
2016-11-29 21:19       ` Daniel Colascione
2016-11-29 21:35         ` Paul Eggert
2016-11-29 21:50           ` Daniel Colascione
2016-11-29 22:01             ` Paul Eggert
2016-11-30  0:37               ` Daniel Colascione
2016-11-30  7:35                 ` Paul Eggert
2016-11-30 13:33                   ` Stefan Monnier
2016-11-30 20:07               ` Richard Stallman
2016-11-30 20:18                 ` Daniel Colascione
2016-12-03 21:32                   ` Richard Stallman
2016-12-03 21:37                     ` Daniel Colascione
2016-12-04 23:03                       ` Richard Stallman
2016-12-03 21:54                     ` Paul Eggert
2016-11-29 22:01           ` Stefan Monnier
2016-11-29 22:22           ` Philipp Stephani
2016-11-29 22:34             ` Paul Eggert

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