Why codeigniter shopping cart class doesn't allow any special character in the name?

Question

I have a question just like in the title - Why codeigniter shopping cart class doesn\'t allow any special character in the name? When I\'m adding some item with normal name

Answer 1

I just found this question from google while facing the same problem, but the answer ipalaus provided didn't fix my problem, because it still does not allow greek characters. After some more digging I found this :

which basically allows everything. Enjoy!