Red/Rebol has a different, powerful approach to homoiconicity and DSLs. And there is this XL language that has very interesting approach to extending the langu

Red/Rebol has a different, powerful approach to homoiconicity and DSLs. And there is this XL language that has very interesting approach to extending the language, but sadly the compiler is not in a runnable state, I could only assess it by the docs.