> (1) enrich the trailer API (make trailer.h have simpler data structures > and practical functions that clients can readily use), and > (2) make builtin/interpret-trailers.c, and other clients in the Git > codebase use this new API. I've done some more thinking/hacking and I'm realizing that changing the data structures significantly as a first step will be difficult to get right without being able to unit-test things as we go. As we don't have unit tests (sorry, I keep forgetting...), I think changing the shape of data structures right now is a showstopper. Step (1) will have to be done without changing any of the existing data structures.
