From: Noam Postavsky <npostavs@gmail.com>
To: "Mattias Engdegård" <mattiase@acm.org>
Cc: Paul Eggert <eggert@cs.ucla.edu>,
Stefan Monnier <monnier@iro.umontreal.ca>,
Emacs developers <emacs-devel@gnu.org>
Subject: Re: Scan of regexps in Emacs (March 17)
Date: Tue, 2 Apr 2019 10:26:40 -0400 [thread overview]
Message-ID: <CAM-tV-9T9v2A8m=AK+hLV52npcZBOCrngVnri2WN4DajeDiRgg@mail.gmail.com> (raw)
In-Reply-To: <09AE372B-3A30-4596-8C4E-B9F4CBF6E348@acm.org>
On Tue, 2 Apr 2019 at 10:15, Mattias Engdegård <mattiase@acm.org> wrote:
> > After looking into it I realized that I don't really know the semantics here (the text I recently added there seems to be wrong, in some cases), and I have my doubts that anyone else knows the semantics either. The attached patch simply gets rid of that section, leaving the area undocumented. User beware!
>
> Apparently I don't really know it either -- I just discovered that:
>
> (string-match "\xff" "\xff") => 0
> (string-match "[\xff]" "\xff") => 0
> (string-match "\xffé?" "\xff") => nil
> (string-match "[\xff]é?" "\xff") => 0
> (string-match "\xff" "\xffé") => 0
> (string-match "[\xff]" "\xffé") => nil
> (string-match "\xffé?" "\xffé") => 0
> (string-match "[\xff]é?" "\xffé") => nil
See also Bug#3687.
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3687
next prev parent reply other threads:[~2019-04-02 14:26 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-17 13:50 Scan of regexps in Emacs (March 17) Mattias Engdegård
2019-03-19 1:21 ` Paul Eggert
2019-03-19 10:34 ` Mattias Engdegård
2019-03-20 1:53 ` Paul Eggert
2019-03-20 2:20 ` Stefan Monnier
2019-03-20 22:01 ` Paul Eggert
2019-03-20 22:59 ` Drew Adams
2019-03-20 23:10 ` Paul Eggert
2019-03-21 3:38 ` Eli Zaretskii
[not found] ` <<deeccd91-0f43-c329-6087-17435550b328@cs.ucla.edu>
[not found] ` <<83d0mk6go5.fsf@gnu.org>
2019-03-21 4:21 ` Drew Adams
2019-03-21 14:17 ` Eli Zaretskii
2019-03-21 0:57 ` Stefan Monnier
2019-03-21 11:15 ` Mattias Engdegård
2019-04-02 7:33 ` Paul Eggert
2019-04-02 14:15 ` Mattias Engdegård
2019-04-02 14:26 ` Noam Postavsky [this message]
2019-04-02 19:13 ` Mattias Engdegård
2019-04-02 16:58 ` Stefan Monnier
2019-04-02 22:08 ` Paul Eggert
2019-04-03 4:52 ` Eli Zaretskii
2019-04-03 17:02 ` Paul Eggert
2019-04-06 9:43 ` Mattias Engdegård
2019-04-07 8:15 ` Michael Albinus
2019-04-07 9:47 ` Paul Eggert
2019-04-07 10:06 ` Mattias Engdegård
2019-04-07 18:45 ` Paul Eggert
2019-03-21 2:07 ` Richard Stallman
2019-03-22 13:26 ` Stephen Leake
2019-03-22 14:03 ` Stefan Monnier
2019-03-22 14:12 ` Mattias Engdegård
2019-03-20 10:04 ` Mattias Engdegård
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