While there can not be a is_packed function you can write a is_not_string function. 

sub is_not_string
{
  my $a = shift;
  my $packed;
  for (split(//,$a)) {
    $packed = 1 if (ord($_) == 0);
    $packed = 1 if (ord($_) > 127);
  }
  return $packed;
}

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Unicode might make the much harder. Update: did not think of "\n" and "\t". Thanks Zaxo
-- gam3
A picture is worth a thousand words, but takes 200K.

In reply to Re: Detecting packed data by gam3
in thread Detecting packed data by vx

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