use POSIX;

for ("foo; is ok", "foo\x3") {
  if (/[^[:print:]]/) {
    print "Contains unprintables\n";
  }
  else {
    print "$_ is safe\n";
  }
}

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See POSIX isprint function.
Caution: Contents may have been coded under pressure.

In reply to Re: Testing for unprintable characters by Roy Johnson
in thread Testing for unprintable characters by Moron

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