RE: namespace node implementation

> Part of that is I'm hoping more experienced 
> users *and* implementors can 
> advice me whether my proposed implementation would produce 
> results close 
> to users' expectations.

Users' expectations hardly come into the matter. The first question is
whether the algorithm is correct according to the spec. (I'm afraid I'm far
too busy debugging my own algorithms to help you on that).

Of course it's nice if you can satisfy users' expectations as well as
conforming to the spec, especially by delivering:

* namespace prefixes that the users recognize
* no redundant namespace declarations in serialized output

but actually, that's the easy part of the problem.

Michael Kay