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Source for wiki HygienicInclusion version 4
Are inclusions hygienic?
Given the macro
((_) (lambda (a) (include "add.scm")))))
where `add.scm` contains `(+ a 1)`, is the `a` that is bound inside the macro the same as the `a` in `add.scm`? In particular, does `((m) 32)` evaluate to 33, or is `a` reported as an undefined variable?
Evaluates to 33: Racket, Gambit, Guile, Kawa, SISC, Chez, Mosh, !IronScheme, SXM
`a` is undefined: Gauche, Chicken, Chibi, STklos, S7, Foment, Owl Lisp
`include` is undefined or broken: MIT, Bigloo, Scheme48/scsh, SCM, Vicare, Larceny, Ypsilon, Scheme 9, Sagittarius
No syntax-rules macros: NexJ, JScheme, KSi, RScheme, !SigScheme, Shoe, !TinyScheme, Dream, BDC, XLisp, Rep, Schemik, Elk, UMB, Oaklisp, Llava, Sizzle, !FemtoLisp, Dfsch, Inlab