July 13, 2004
6:33 p.m.
[Jim]
The documentation is still off I think, as it says that a non-zero value indicates an error, but I don't think that this is true.
I checked in doc chages, to clarify this, and to clarify that a NULL cannot be passed as the first arg to the visit() callback, and to clarify that users aren't normally expected to write visit() callbacks themselves (they're supplied by the core).