Since we're dealing with a var, 

use Data::Dumper qw( Dumper );
$Data::Dumper::Useqq = 1;
print(Dumper($str));

[download]
or 
use Devel::Peek qw( Dump );
Dump($str);

[download]

In reply to Re^2: Weird underscore/whitespace failing regex by ikegami
in thread Weird underscore/whitespace failing regex by d-napizzle

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