Re:Namespace resolution in L3 Core and XPath (was Full infoset support for DOM 3 Core)

>Since null and "" are indistinguishable on some bindings

See previous discussion:  there are pre-existing places where the
distinction may be meaningful, and the binding which chooses to create this
situation is responsible for deciding how it will be handled. (Note that it
_IS_ a choice, since a reserved value other than "" could have been used to
represent the null string. Given Unicode, it isn't hard to come up with a
string which is exceedingly unlikely to ever collide with actual data!)

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Joe Kesselman  / IBM Research