Are Extensible Programming Languages Coming?

Are Extensible Programming Languages Coming?
The reaction on the oXML list (where I heard about it) to this Slashdot article was brusk, but then again, Slashdot folk haven't taken kindly to the proposal, either. But I think there's something to it: a programming language written in XML that can be accessed through intuitive interfaces corresponding to your favorite source code editor. More...