I've searched for this term, and can only find a few references, but i've heard it mentioned several times. None of these references seem "authoritative".
Nearest i can tell, "ad-hoc parsing" involves splitting an input into chunks and processing those chunks. Maybe that's correct, i don't know.
Can someone help me find some resources that explains ad-hoc parsing more completely? What's the origin of the term (from academia, etc)? What are some examples of ad-hoc parsing?