From: srinivasarao vegunta <sriveg@yahoo.com>
Date: Wed, 24 Jan 2007 20:02:19 -0800 (PST)
To: xmlschema-dev@w3.org
Message-ID: <276036.16694.qm@web57211.mail.re3.yahoo.com>
srinivasarao vegunta <sriveg@yahoo.com> wrote: Michael Kay <mike@saxonica.com> wrote: I agree. If you're only giving a match or no-match result, as in XML Schema, greediness is irrelevant. Michael Kay http://www.saxonica.com/ > -----Original Message----- > From: xmlschema-dev-request@w3.org > [mailto:xmlschema-dev-request@w3.org] On Behalf Of Your Name > Sent: 19 January 2007 05:01 > To: xmlschema-dev@w3.org > Subject: Re: regex help > > > Just a note on the greediness mentioned here... > > My understanding is that the greediness of a regular > expression is only an issue when you are capturing the values > of sub-patterns within the target data. (e.g. in Perl > 'ML123' =~ /ML(\d+)/; captures 123 into $1.) When only doing > matching, eventually, if possible, the pattern will be > matched irrespective of whether greedy or non-greedy matching is used. > > Greediness just affects whether the regular expression engine > attempts to grab lots of content for a sub-expression in it's > first attempt and them back track, or attempts to capture the > minimal amount in its first attempt and then forward track > (not sure if that's a proper term!). > > If anyone's opinion differs, please let me know
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