Skip Menu |
 

This queue is for tickets about the Regexp-Grammars CPAN distribution.

Report information
The Basics
Id: 75391
Status: open
Priority: 0/
Queue: Regexp-Grammars

People
Owner: Nobody in particular
Requestors: shtil [...] comcast.net
Cc:
AdminCc:

Bug Information
Severity: (no value)
Broken in: (no value)
Fixed in: (no value)



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
Download (untitled) / with headers
text/plain 276b
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?
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>
Download (untitled) / with headers
text/plain 228b
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
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
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
Download (untitled) / with headers
text/plain 753b
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 $rg. Show quoted text
----- Original Message ----- From: "damian@conway.org via RT" <bug-Regexp-Grammars@rt.cpan.org> To: shtil@comcast.net Sent: Tuesday, February 28, 2012 5:40:12 PM Subject: Re: [rt.cpan.org #75391] Using regex assertions with < <URL: https://rt.cpan.org/Ticket/Display.html?id=75391 > Just uploaded release 1.015, which includes a fix for this bug. Thanks again. Damian
Subject: Re: [rt.cpan.org #75391] Using regex assertions with <
Date: Fri, 2 Mar 2012 06:14:10 +1100
To: bug-Regexp-Grammars [...] rt.cpan.org
From: Damian Conway <damian [...] conway.org>
Download (untitled) / with headers
text/plain 114b
Not a bug. Just standard Perl behaviour. You need to put: use re 'eval'; before the interpolation. Damian
Subject: Re: [rt.cpan.org #75391] Using regex assertions with <
Date: Thu, 1 Mar 2012 20:02:00 +0000 (UTC)
To: bug-Regexp-Grammars [...] rt.cpan.org
From: shtil [...] comcast.net
Download (untitled) / with headers
text/plain 616b
I see, One more question: Is it possible to fail a rule from an autoaction method? sub method { my ($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
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>
Download (untitled) / with headers
text/plain 290b
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


This service is sponsored and maintained by Best Practical Solutions and runs on Perl.org infrastructure.

Please report any issues with rt.cpan.org to rt-cpan-admin@bestpractical.com.