/m changes the effect of ^ and $ to match at the start and end of lines (rather than the whole string). You need /s which changes the meaning of . so it matches \n.

I remember it as /s changes the meaning of a single metacharacter and /m changes the meaning of multiple metacharacters.

#!/usr/bin/perl -w

use strict;

$_ =
'<P>
THE GENERAL SYNOPSIS AT 0100<BR>
LOW SOUTH FITZROY 1000 MOVING SLOWLY NORTH AND FILLING 1006 BY 0100<BR
+>
TOMORROW. NEW LOW EXPECTED 50 MILES WEST OF TRAFALGAR 1007 BY SAME<BR>
TIME. HIGH 100 MILES WEST OF ROCKALL 1023 SLOW MOVING AND DECLINING<BR
+>
1021 BY THAT TIME<BR>
<P>
THE AREA FORECASTS FOR THE NEXT 24 HOURS<BR>';

/GENERAL SYNOPSIS AT (\d{4})<BR>\s+(.*)\s<P>/s;

print "1 -> $1\n2 -> $2\n";

[download]

Of course the usual caveats about not parsing HTML with regexes still apply :)

--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re: Multi-Line Regex's by davorg
in thread Multi-Line Regex's by sch

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