Dunno, it works for me on perl 5.6.0, 5.6.1, and 5.8.0. Which version are you using? 
print join("\n", @empty_square), "\n";

+----+
|2   |
|3   |
|4   |
+----+

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In reply to Re: Re: Question of variable interpolation in regex by Thelonius
in thread Question of variable interpolation in regex by SparkeyG

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