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Source for wiki SyntaxAbuse version 2
How is `(eqv? do 1)` interpreted?
Racket, MIT, Gambit, SISC, Chez, SCM, Ikarus, Larceny, Mosh, !SigScheme, SXM,
VSCM, Chibi report bad syntax.
Chicken, Bigloo, Scheme48/scsh, STklos report an undefined variable.
Gauche, Guile, Kawa, Scheme 9, S7 report `#f`.