Bill Kelly wrote:
> From: "Michael W. Ryder" <_mwryder / worldnet.att.net>
>> Bill Kelly wrote:
>>>
>>> Based on: 
>>> http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/248540
>>>
>>> To test for non-printable characters, use:
>>>
>>>  str =~ /[^[:print:]]/
>>>
>> Even though I am not the OP I tried that and using index but none of 
>> them seem to work.  I get an error message saying "warning character 
>> class has '[' without escape" followed by "warning regexp has ']' 
>> without escape" and the return is nil regardless what is in the string.
>> Is there something I am missing here?
> 
> Not sure.  It works for me, without warnings even with ruby -w on:
> ruby 1.8.4 (2005-12-24) [i386-mswin32]
> 
> And in IRB:
> 
> irb(main):117:0> "abc\ndef" =~ /[^[:print:]]/
> => 3   # yes, a non-printable character was found at idx 3
> 
> irb(main):118:0> "abcdef" =~ /[^[:print:]]/
> => nil  # no, a non-printable character was not found
> 
> 

OK, I see what I did.  I forgot the trailing colon.  Still getting used 
to the language and regular expressions.

> Regards,
> 
> Bill
> 
> 
>