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From: "Mattias Engdegård" <mattiase@acm.org>
To: Richard Stallman <rms@gnu.org>
Cc: jan <rtm443x@googlemail.com>, Stefan Kangas <stefan@marxist.se>,
	41006@debbugs.gnu.org
Subject: bug#41006: 26.3; regular expressions documentation
Date: Tue, 5 May 2020 19:12:50 +0200	[thread overview]
Message-ID: <6F7830C9-FED5-4CE4-AAA3-45BFA0638F58@acm.org> (raw)
In-Reply-To: <E1jVRV3-0008Fj-MZ@fencepost.gnu.org>

4 maj 2020 kl. 05.10 skrev Richard Stallman <rms@gnu.org>:

> Would you like to propose an ordering and classification by function?

Start with the lexical details: special chars, escaping, literals.
Then something like this:

* concatenation and alternative
* repetition: * + ? etc
* bracketing: \(?: ... \)
* single-character expressions: [...] '.' \cX etc
* zero-width assertions: ^ $ \< etc
* capture groups and backrefs

Aim for all in a single node, using subheadings as appropriate, as this is what the user probably wants to see. Use subnodes for some in-depth information such as named character classes.

As Stefan pointed out, a section comparing the syntax with that of other regexp implementations likely seen by the user would be very welcome. It would permit the reader to make use of existing knowledge while reducing mistakes coming from incorrect assumptions.






  parent reply	other threads:[~2020-05-05 17:12 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-01 19:06 bug#41006: 26.3; regular expressions documentation jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-03  3:40 ` Richard Stallman
2020-05-03 10:31   ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-03 13:07 ` Mattias Engdegård
2020-05-03 14:00   ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-03 20:08   ` Drew Adams
2020-05-03 20:31     ` Stefan Kangas
2020-05-04  1:00       ` Drew Adams
2020-05-05  2:56       ` Richard Stallman
2020-05-05 10:05         ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-05 16:51           ` Mattias Engdegård
2020-05-05 18:20         ` Stefan Kangas
2020-05-05 18:40           ` Drew Adams
2020-05-05 19:04             ` Stefan Kangas
2020-05-05 19:42               ` Drew Adams
2020-05-05 21:23                 ` Stefan Kangas
2020-05-05 21:37                   ` Drew Adams
2020-05-07  2:40                   ` Richard Stallman
2020-05-09  3:48               ` Richard Stallman
2020-05-07  2:41             ` Richard Stallman
2020-05-07  3:17               ` Drew Adams
2020-05-08  2:51                 ` Richard Stallman
2020-05-07 10:31               ` Stefan Kangas
2020-05-07  2:41           ` Richard Stallman
2020-05-07  3:18             ` Drew Adams
2020-05-07 10:32             ` Stefan Kangas
2020-05-08  2:49               ` Richard Stallman
2020-05-08  6:47                 ` Eli Zaretskii
2020-05-08 10:10                   ` Stefan Kangas
2020-05-08 10:31                     ` Eli Zaretskii
2020-05-08 18:17                       ` Stefan Kangas
2020-05-08 18:47                         ` Eli Zaretskii
2020-05-08 20:09                           ` Stefan Kangas
2020-05-08 10:04                 ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-09  3:56                   ` Richard Stallman
2020-05-08 16:49                 ` Drew Adams
2020-05-09  3:53                   ` Richard Stallman
2020-05-09  3:54                   ` Richard Stallman
2020-05-07  2:41           ` Richard Stallman
2020-05-04  3:10   ` Richard Stallman
2020-05-04  9:13     ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-05  2:56       ` Richard Stallman
2020-05-05 10:02         ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-05 17:12     ` Mattias Engdegård [this message]
2020-05-05 17:40       ` Eli Zaretskii
2020-05-05 17:50         ` jan via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-05-05 18:09         ` Stefan Kangas
2020-05-05 18:23           ` Eli Zaretskii
2020-05-07  2:42       ` Richard Stallman
2022-04-29 12:22 ` Lars Ingebrigtsen

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