That doesn't capture properly. Fix: 
my $regex = qr/\d\s+foo/;
$some_string =~ /($regex)[^\r\n]*($regex)/;

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Also, your solution doesn't scale (if capturing is desired). He can't say, for example, the following while capturing what $regexp matches:

my $regex = qr/\d\s+foo/;
$some_string =~ /(?:$regex[^\r\n]*)*($regex)/;

[download]

In reply to Re^3: PCRE: Repeating Subpattens After Intervening Characters by ikegami
in thread PCRE: Repeating Subpattens After Intervening Characters by schnarff

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