use strict;
my $str = 'This is paragraph #1
New-York, London, Paris, Berlin
Some other text
End of paragraph
This is paragraph #2
London, Paris
End of paragraph
This is paragraph #3
New-York, Paris, Berlin
Some other text
End of paragraph
This is paragraph #4
End of paragraph
This is paragraph #5
Paris, Berlin
Some other text
End of paragraph';
my $regex = qr/(?m)^(?=.*(?:\r?\n(?!\r?\n).*)*?\bNew-York\b)(?=.*(?:\r?\n(?!\r?\n).*)*?\bBerlin\b).*(?:\r?\n(?!\r?\n).*)*/p;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html