From: Eli Zaretskii <eliz@gnu.org>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: mattiase@acm.org, cpitclaudel@gmail.com, emacs-devel@gnu.org
Subject: Re: :alnum: broken?
Date: Fri, 28 Feb 2020 15:11:29 +0200 [thread overview]
Message-ID: <83v9nqg8la.fsf@gnu.org> (raw)
In-Reply-To: <1c654ac9-10a2-4e5d-f77c-3b78bb580ffc@cs.ucla.edu> (message from Paul Eggert on Fri, 28 Feb 2020 00:48:32 -0800)
> Cc: emacs-devel@gnu.org, cpitclaudel@gmail.com
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Fri, 28 Feb 2020 00:48:32 -0800
>
> On 2/28/20 12:09 AM, Eli Zaretskii wrote:
> > I don't believe it is right for us to reject questionable but
> > valid code.
>
> That begs the question. The code is valid only if we continue to insist that it
> be valid, despite the clear drawbacks of doing so.
I think it's valid due to regexp specification.
> Instead, we can easily change the definition of Emacs regular
> expressions so that the code is invalid. Since such code is
> invariably a mistake, it's a win to make such a change. That's what
> GNU grep has done for many years, and it works.
So what is your question?
> > I can even agree to reject this at
> > run time under a non-default value of some special variable
>
> That would be better than nothing, but it's not very good since most people
> won't know about the variable and thus will continue to suffer from these
> errors. Better would be to make the default reject these buggy regexps, which is
> what GNU grep does (it accepts the buggy regexps only if POSIXLY_CORRECT is set).
We disagree (as has been established already).
next prev parent reply other threads:[~2020-02-28 13:11 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-21 18:58 :alnum: broken? Stephen Leake
2020-02-21 19:00 ` Paul Eggert
2020-02-21 19:32 ` Mattias Engdegård
2020-02-21 21:28 ` Stephen Leake
2020-02-22 1:09 ` Paul Eggert
2020-02-22 7:48 ` Eli Zaretskii
2020-02-22 21:28 ` Paul Eggert
2020-02-23 3:28 ` Eli Zaretskii
2020-02-23 10:21 ` Mattias Engdegård
2020-02-23 18:13 ` Paul Eggert
2020-02-23 18:27 ` Eli Zaretskii
2020-02-23 19:34 ` Óscar Fuentes
2020-02-23 22:12 ` Drew Adams
2020-02-25 3:57 ` Richard Stallman
2020-02-25 14:37 ` Stefan Monnier
2020-02-25 15:45 ` Drew Adams
2020-02-25 15:40 ` Drew Adams
2020-02-25 9:33 ` Andreas Schwab
2020-02-25 13:53 ` Clément Pit-Claudel
2020-02-25 15:40 ` Drew Adams
2020-02-23 18:40 ` Mattias Engdegård
2020-02-26 14:10 ` Mattias Engdegård
2020-02-26 14:54 ` Drew Adams
2020-02-26 15:48 ` Stefan Monnier
2020-02-26 21:00 ` Paul Eggert
2020-02-26 21:18 ` Mattias Engdegård
2020-02-26 21:24 ` Clément Pit-Claudel
2020-02-26 22:01 ` Mattias Engdegård
2020-02-26 22:38 ` Eli Zaretskii
2020-02-27 17:57 ` Mattias Engdegård
2020-02-27 23:17 ` Óscar Fuentes
2020-02-28 8:09 ` Eli Zaretskii
2020-02-28 8:48 ` Paul Eggert
2020-02-28 13:11 ` Eli Zaretskii [this message]
2020-02-28 17:41 ` Paul Eggert
2020-02-28 20:09 ` Eli Zaretskii
2020-02-28 20:25 ` Paul Eggert
2020-02-28 20:38 ` Eli Zaretskii
2020-02-28 21:04 ` Mattias Engdegård
2020-02-28 21:40 ` Eli Zaretskii
2020-02-29 11:43 ` Mattias Engdegård
2020-02-29 12:07 ` Eli Zaretskii
2020-02-29 14:24 ` Stefan Monnier
2020-02-29 14:14 ` Stefan Monnier
2020-02-29 17:33 ` Óscar Fuentes
2020-02-29 19:52 ` Stefan Monnier
2020-02-29 21:12 ` Óscar Fuentes
2020-02-29 22:22 ` Marcin Borkowski
2020-02-29 22:34 ` Clément Pit-Claudel
2020-03-01 22:44 ` Marcin Borkowski
2020-03-02 3:07 ` Stefan Monnier
2020-03-02 7:15 ` Marcin Borkowski
2020-03-02 7:41 ` Emanuel Berg via Emacs development discussions.
2020-03-02 16:14 ` Drew Adams
2020-03-02 16:51 ` Emanuel Berg via Emacs development discussions.
2020-03-02 7:56 ` Joost Kremers
2020-03-02 9:44 ` Štěpán Němec
2020-03-02 10:43 ` Joost Kremers
2020-03-02 13:37 ` Clément Pit-Claudel
2020-03-02 17:03 ` Stefan Monnier
2020-03-02 18:23 ` Clément Pit-Claudel
2020-02-29 23:02 ` Andrea Corallo
2020-03-01 22:41 ` Marcin Borkowski
2020-02-29 22:58 ` Stefan Monnier
2020-02-29 23:28 ` Óscar Fuentes
2020-02-27 1:33 ` Paul Eggert
2020-02-26 16:01 ` Andreas Schwab
2020-02-26 21:06 ` Mattias Engdegård
2020-02-27 8:43 ` Andreas Schwab
2020-02-27 18:05 ` Mattias Engdegård
2020-02-22 9:09 ` Eli Zaretskii
2020-02-23 3:49 ` Richard Stallman
2020-02-23 7:51 ` Paul Eggert
2020-02-23 15:07 ` Eli Zaretskii
2020-02-21 19:01 ` Noam Postavsky
2020-02-21 19:04 ` Andreas Schwab
[not found] <<86wo8flqct.fsf@stephe-leake.org>
[not found] ` <<f89e340f-9a19-50e1-4421-57fd3e235548@cs.ucla.edu>
[not found] ` <<86sgj3ljf0.fsf@stephe-leake.org>
[not found] ` <<E1j5iGS-0000r6-Id@fencepost.gnu.org>
[not found] ` <<18bd2b64-1c2f-055f-4fa0-092bdb1da531@cs.ucla.edu>
[not found] ` <<838sktibpu.fsf@gnu.org>
2020-02-23 16:52 ` Drew Adams
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