I do like the npf_pprintf function with a call-back that is called for each outputted character. It would have been nice to have such a function in the C standa

I do like the npf_pprintf function with a call-back that is called for each outputted character. It would have been nice to have such a function in the C standard. Even beter would be an interator interface, that gives you the next character each time it is called.