Even using your 'unbroken' way, I get 

Not enough arguments for pack at -e line 1, near "pack;"
Not enough arguments for pack at -e line 1, near "pack->import"
BEGIN not safe after errors--compilation aborted at -e line 1.

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perl v5.6.1

In reply to Re^2: use x; equivalent by ikegami
in thread use x; equivalent by unclesmiff

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