if(string =~ /.*[\a\b\e\f\n\r\t\v].*/)
  puts "Invalid string"
else
  puts string + " is ok"
end

On 5/15/07, Mike Steiner <mikejaysteiner / gmail.com> wrote:
> Is there an easy way to test if a string is printable (doesn't contain
> control characters)? Something easier than listing out all the letters,
> numbers, and punctuation and checking each character.
>
> Mike Steiner
>