Generalized and first-class macros: what is this called?

• macaroni

  3 27 4.0 Janet

  macro spaghetti code

• rhombus-prototype

  24 299 9.7 Racket

  Brainstorming and draft proposals for Rhombus

  

The notion of “tail sequence” in general doesn’t exist in Lisp’s macro-expansion model, since Lisp macros are strictly local transformations. A “tail sequence” allows a macro to control the expansion of the whole context, which requires wrapping the whole context in another macro in Lisp’s model. This is what leads to proposals like #%local-definition in Racket. However, this notion does exist in the enforestation model, which is what the experiment language Rhombus is based on, although it’s probably not quite a Lisp ;)

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