[barcode] Code 39 ASCII Character

[Alessandro Rubini]

Hello.

> is GNU Barcode able to handle non-printable ACSII Characters like 
> ESC or CR ?

No, extended code-39 is not implemented, though it should be pretty
straightforward to.
 
> (see http://www.idautomation.com/code39faq.html#Code39ASCII)

Thanks for the link, I'll see what can I do (besides accepting a patch :)

/alessandro, who's pretty late with barcode work, and knows about that