I ran your exact script and got the right result. 

>ARGVtest.pl
$VAR1 = [];

-1

[download]

I think your system's handling of .pl files is broken.

  1. First, get the file type from the default key of HKEY_CLASSES_ROOT\.pl. For me, it's "Perl".
  2. Then, set the default key of HKEY_CLASSES_ROOT\Perl\shell\Open\command to "c:\perl\bin\perl.exe" "%1" %* (where "Perl" is the file type from the first step).

As a .reg: 

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.pl]
@="Perl"

[HKEY_CLASSES_ROOT\Perl]
@="Perl File"

[HKEY_CLASSES_ROOT\Perl\shell]

[HKEY_CLASSES_ROOT\Perl\shell\Open]

[HKEY_CLASSES_ROOT\Perl\shell\Open\command]
@="\"c:\\perl\\bin\\perl.exe\" \"%1\" %*"

[download]

In reply to Re^6: unpacking wmic command's unicode output by ikegami
in thread unpacking wmic command's unicode output by goibhniu

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