It sounds really good, just one thing is unclear...
When the macro body is a string that is "shoved back into the input and reparsed", can I ask which variables to evaluate and which not ? I.e.
my macro this {"self{$foo}"}
Will $foo be interpolated/evaluated at compile-time, when the macro is expanded, or at runtime, in the context of the macro's usage ? In Lisp, using special syntax you can have both, which is very, *very* powerful.
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