GNU bug report logs -
#41558
Regexp Bug
Previous Next
To reply to this bug, email your comments to 41558 AT debbugs.gnu.org.
Toggle the display of automated, internal messages from the tracker.
Report forwarded
to
bug-sed <at> gnu.org
:
bug#41558
; Package
sed
.
(Wed, 27 May 2020 04:16:02 GMT)
Full text and
rfc822 format available.
Acknowledgement sent
to
"anton.paras" <anton <at> paras.nu>
:
New bug report received and forwarded. Copy sent to
bug-sed <at> gnu.org
.
(Wed, 27 May 2020 04:16:02 GMT)
Full text and
rfc822 format available.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
[Message part 1 (text/plain, inline)]
I posted to Stack Exchange, and they recommended that I file a bug. I'd rather not copy+paste it all, so here's the link:
https://unix.stackexchange.com/questions/579889/why-doesnt-this-sed-command-replace-the-3rd-to-last-and
here's an example
> echo 'dog and foo and bar and baz land good' | sed -E 's/(.*)\band\b((.*\band\b){2})/\1XYZ\2/'
expected output: dog XYZ foo and bar and baz land good
actual output: dog and foo XYZ bar and baz land good
here's my sed --version output: sed (GNU sed) 4.2.2
I hope this is helpful, cheers!
[Message part 2 (text/html, inline)]
Information forwarded
to
bug-sed <at> gnu.org
:
bug#41558
; Package
sed
.
(Thu, 28 May 2020 06:30:02 GMT)
Full text and
rfc822 format available.
Message #8 received at 41558 <at> debbugs.gnu.org (full text, mbox):
On Tue, 26 May 2020 21:14:12 -0700
"anton.paras" <anton <at> paras.nu> wrote:
> I posted to Stack Exchange, and they recommended that I file a bug. I'd rather not copy+paste it all, so here's the link:
>
>
>
> https://unix.stackexchange.com/questions/579889/why-doesnt-this-sed-command-replace-the-3rd-to-last-and
>
>
>
> here's an example
>
>
>
> > echo 'dog and foo and bar and baz land good' |??? sed -E 's/(.*)\band\b((.*\band\b){2})/\1XYZ\2/'
>
>
>
> expected output:?dog XYZ foo and bar and baz land good
>
> actual output:?dog and foo XYZ bar and baz land good
>
>
> here's my sed --version output:?sed (GNU sed) 4.2.2
>
>
>
> I hope this is helpful, cheers!
$ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/(.*\band){2}/p'
foo and bar land
$ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/.*\band.*\band/p'
$
It seems that there is the bug in regex.
expected:
$ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/(.*\band){2}/p'
$ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/.*\band.*\band/p'
$
It also reproduces in grep.
$ echo 'foo and bar land' | env LC_ALL=en_US.utf8 grep -E '(.*\band){2}'
foo and bar land
$ echo 'foo and bar land' | env LC_ALL=en_US.utf8 grep -E '.*\band.*\band'
$
Information forwarded
to
bug-sed <at> gnu.org
:
bug#41558
; Package
sed
.
(Tue, 22 Sep 2020 23:41:02 GMT)
Full text and
rfc822 format available.
Message #11 received at 41558 <at> debbugs.gnu.org (full text, mbox):
On Wed, May 27, 2020 at 11:30 PM Norihiro Tanaka <noritnk <at> kcn.ne.jp> wrote:
> On Tue, 26 May 2020 21:14:12 -0700
> "anton.paras" <anton <at> paras.nu> wrote:
>
> > I posted to Stack Exchange, and they recommended that I file a bug. I'd rather not copy+paste it all, so here's the link:
> >
> >
> >
> > https://unix.stackexchange.com/questions/579889/why-doesnt-this-sed-command-replace-the-3rd-to-last-and
> >
> >
> >
> > here's an example
> >
> >
> >
> > > echo 'dog and foo and bar and baz land good' |??? sed -E 's/(.*)\band\b((.*\band\b){2})/\1XYZ\2/'
> >
> >
> >
> > expected output:?dog XYZ foo and bar and baz land good
> >
> > actual output:?dog and foo XYZ bar and baz land good
> >
> >
> > here's my sed --version output:?sed (GNU sed) 4.2.2
> >
> >
> >
> > I hope this is helpful, cheers!
>
> $ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/(.*\band){2}/p'
> foo and bar land
> $ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/.*\band.*\band/p'
> $
>
> It seems that there is the bug in regex.
>
> expected:
> $ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/(.*\band){2}/p'
> $ echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/.*\band.*\band/p'
> $
>
> It also reproduces in grep.
>
> $ echo 'foo and bar land' | env LC_ALL=en_US.utf8 grep -E '(.*\band){2}'
> foo and bar land
> $ echo 'foo and bar land' | env LC_ALL=en_US.utf8 grep -E '.*\band.*\band'
> $
I agree that this looks like a regex bug. This should print nothing:
echo 'foo and bar land' | env LC_ALL=en_US.utf8 sed -nE '/(.*\band){2}/p'
just as this already does:
echo 'foo and bar land' | env LC_ALL=C sed -nE '/(.*\band){2}/p'
Does anyone know if there's a glibc bug number for it?
Information forwarded
to
bug-sed <at> gnu.org
:
bug#41558
; Package
sed
.
(Wed, 23 Sep 2020 00:41:01 GMT)
Full text and
rfc822 format available.
Message #14 received at 41558 <at> debbugs.gnu.org (full text, mbox):
On 9/22/20 4:40 PM, Jim Meyering wrote:
> Does anyone know if there's a glibc bug number for it?
I looked for one and didn't find it, so I created glibc bug 26653 for it. See:
https://sourceware.org/bugzilla/show_bug.cgi?id=26653
Information forwarded
to
bug-sed <at> gnu.org
:
bug#41558
; Package
sed
.
(Wed, 23 Sep 2020 02:05:02 GMT)
Full text and
rfc822 format available.
Message #17 received at 41558 <at> debbugs.gnu.org (full text, mbox):
On Tue, Sep 22, 2020 at 5:40 PM Paul Eggert <eggert <at> cs.ucla.edu> wrote:
> On 9/22/20 4:40 PM, Jim Meyering wrote:
> > Does anyone know if there's a glibc bug number for it?
>
> I looked for one and didn't find it, so I created glibc bug 26653 for it. See:
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=26653
Nice! Thank you!
This bug report was last modified 4 years and 44 days ago.
Previous Next
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.