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Top Forums Shell Programming and Scripting Regexp help -- (a*)(b*|(ab)*) and (a*)((b|ab)*) on "aabab" Post 302300186 by radoulov on Monday 23rd of March 2009 12:26:15 PM
Old 03-23-2009
Only the second backreference is different:

Code:
% perl -pe's/(a*)((b|ab)*)/-->$1<-- -->$2<--/'<<<aabab 
-->aa<-- -->bab<--


Last edited by radoulov; 03-23-2009 at 01:27 PM.. Reason: corrected
 

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PPIx::Regexp::Token(3)					User Contributed Perl Documentation				    PPIx::Regexp::Token(3)

NAME
PPIx::Regexp::Token - Base class for PPIx::Regexp tokens. SYNOPSIS
use PPIx::Regexp::Dumper; PPIx::Regexp::Dumper->new( 'qr{foo}' )->print(); INHERITANCE
"PPIx::Regexp::Token" is a PPIx::Regexp::Element. "PPIx::Regexp::Token" is the parent of PPIx::Regexp::Token::Assertion, PPIx::Regexp::Token::Backtrack, PPIx::Regexp::Token::CharClass, PPIx::Regexp::Token::Code, PPIx::Regexp::Token::Comment, PPIx::Regexp::Token::Control, PPIx::Regexp::Token::Greediness, PPIx::Regexp::Token::GroupType, PPIx::Regexp::Token::Literal, PPIx::Regexp::Token::Modifier, PPIx::Regexp::Token::Operator, PPIx::Regexp::Token::Quantifier, PPIx::Regexp::Token::Reference, PPIx::Regexp::Token::Structure, PPIx::Regexp::Token::Unknown, PPIx::Regexp::Token::Unmatched and PPIx::Regexp::Token::Whitespace. DESCRIPTION
This class represents the base of the class hierarchy for tokens in the PPIx::Regexp package. METHODS
This class provides no public methods beyond those provided by its superclass. SUPPORT
Support is by the author. Please file bug reports at <http://rt.cpan.org>, or in electronic mail to the author. AUTHOR
Thomas R. Wyant, III wyant at cpan dot org COPYRIGHT AND LICENSE
Copyright (C) 2009-2013 by Thomas R. Wyant, III This program is free software; you can redistribute it and/or modify it under the same terms as Perl 5.10.0. For more details, see the full text of the licenses in the directory LICENSES. This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. perl v5.16.3 2014-06-10 PPIx::Regexp::Token(3)
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