Tue Feb 28 19:42:45 2012shtil [...] comcast.net - Ticket created
Subject:
Using regex assertions with <
Date:
Wed, 29 Feb 2012 00:42:36 +0000 (UTC)
To:
bug-regexp-grammars [...] rt.cpan.org
From:
shtil [...] comcast.net
Hi,
I tried to use a look-behing assertion in a regex with Regexp::Grammars and discovered that the < symbol clashes with Regexp::Grammars syntax:
<rule: foo>
<pref=((?<!bar)foo)>
The module did not like the < inside the sub-pattern.
Am I missing something?
Tue Feb 28 20:14:17 2012damian [...] conway.org - Correspondence added
Subject:
Re: [rt.cpan.org #75391] Using regex assertions with <
Date:
Wed, 29 Feb 2012 12:13:28 +1100
To:
bug-Regexp-Grammars [...] rt.cpan.org
From:
Damian Conway <damian [...] conway.org>
That's definitely a bug.
The workaround for the moment is:
<rule: foo>
<pref>
<token: pref>
(?<!bar) foo
I'll endeavour to fix it for the next release.
Thanks for the report,
Damian
Tue Feb 28 20:14:18 2012The RT System itself - Status changed from 'new' to 'open'
Tue Feb 28 20:40:12 2012damian [...] conway.org - Correspondence added
Subject:
Re: [rt.cpan.org #75391] Using regex assertions with <
Date:
Wed, 29 Feb 2012 12:39:20 +1100
To:
bug-Regexp-Grammars [...] rt.cpan.org
From:
Damian Conway <damian [...] conway.org>
Just uploaded release 1.015, which includes a fix for
this bug.
Thanks again.
Damian
Thu Mar 01 12:32:24 2012shtil [...] comcast.net - Correspondence added
Subject:
Re: [rt.cpan.org #75391] Using regex assertions with <
Date:
Thu, 1 Mar 2012 17:32:11 +0000 (UTC)
To:
bug-Regexp-Grammars [...] rt.cpan.org
From:
shtil [...] comcast.net
Thank you very much for the prompt response and resolution.
While we are at it, do you think the following is a bug too.
my $r1 = q@
<rule: r>
<\$>
@;
my $rg = qr/
<r>
$r1
/x;
# I get: Eval-group not allowed at runtime, use re 'eval' in regex m/(?{; *Regexp::Grammars::LOGFILE ...
No matter what I did I could not get an escaped $ into $rg.
Show quoted text
----- Original Message -----
From: "damian@conway.org via RT" <bug-Regexp-Grammars@rt.cpan.org>
To: shtil@comcast.net
Sent: Tuesday, February 28, 2012 5:40:12 PM
Subject: Re: [rt.cpan.org #75391] Using regex assertions with <
<URL: https://rt.cpan.org/Ticket/Display.html?id=75391 >
Just uploaded release 1.015, which includes a fix for
this bug.
Thanks again.
Damian
Thu Mar 01 14:14:58 2012damian [...] conway.org - Correspondence added
Subject:
Re: [rt.cpan.org #75391] Using regex assertions with <
Date:
Fri, 2 Mar 2012 06:14:10 +1100
To:
bug-Regexp-Grammars [...] rt.cpan.org
From:
Damian Conway <damian [...] conway.org>
Not a bug. Just standard Perl behaviour.
You need to put:
use re 'eval';
before the interpolation.
Damian
Thu Mar 01 15:02:10 2012shtil [...] comcast.net - Correspondence added
Subject:
Re: [rt.cpan.org #75391] Using regex assertions with <
Date:
Thu, 1 Mar 2012 20:02:00 +0000 (UTC)
To:
bug-Regexp-Grammars [...] rt.cpan.org
From:
shtil [...] comcast.net
I see,
One more question:
Is it possible to fail a rule from an autoaction method?
sub method {
my ($self, $rhash) = @_;
# ... figure out what to do
if (MUST_FAIL) {
DO_SOMETHING_TO_FAIL
}
}
Show quoted text
----- Original Message -----
From: "damian@conway.org via RT" <bug-Regexp-Grammars@rt.cpan.org>
To: shtil@comcast.net
Sent: Thursday, March 1, 2012 11:14:59 AM
Subject: Re: [rt.cpan.org #75391] Using regex assertions with <
<URL: https://rt.cpan.org/Ticket/Display.html?id=75391 >
Not a bug. Just standard Perl behaviour.
You need to put:
use re 'eval';
before the interpolation.
Damian
Thu Mar 01 15:27:14 2012damian [...] conway.org - Correspondence added
Subject:
Re: [rt.cpan.org #75391] Using regex assertions with <
Date:
Fri, 2 Mar 2012 07:26:26 +1100
To:
bug-Regexp-Grammars [...] rt.cpan.org
From:
Damian Conway <damian [...] conway.org>
Show quoted text
> One more question:
> Is it possible to fail a rule from an autoaction method?
I'm afraid, not. autoactions happen too late (after the
rule has finally matched and after its stack frame has
been popped).
I looked into it, but there's really no way to allow that to
work.
Sorry,
Damian
RT for rt.cpan.org