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I am also not sure what you exactly want to achieve by your second question, however try this:
#! /usr/bin/perl use strict; use warnings; use Regexp::Assemble; my @urls = qw( http://www.youtube.com/user/test1 http://www.youtube.com/user/test2 http://www.youtube.com/user/test3 http://www.youtube.com/user/test4 http://www.youtube.com/user/test5 ); my $r = Regexp::Assemble->new; for (@urls) { $r->add( quotemeta ); } print $r->re, $/; __END__
output: (?-xism:http:\/\/www\.youtube\.com\/user\/test[12345])

And you may also find valuable the String-Approx distribution from CPAN which implements approximate string matching based on Levenshtein distance.

Hope this helps.

In reply to Re: Reverse regexp a regexp? by rubasov
in thread Reverse regexp a regexp? by freakingwildchild

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