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Source for wiki SquareBrackets version 6
I tested the usual suite of Schemes with `'[a b c]` to see how they reacted to the square brackets. R6RS requires the result to be `(a b c)`.
Evaluates to `(a b c)`: Racket, Gauche, Gambit, Chicken, Bigloo, Guile, SISC, Chez, Vicare, Larceny, Ypsilon, Mosh, !IronScheme, Scheme 9, STklos, KSi, Schemik, Elk, Oaklisp, SXM, Sizzle, Spark, Sagittarius
Evaluates to the symbol `[a`, followed by undefined-variable error on `b`: Chibi, SCM, Shoe, !TinyScheme, Dream, S7, BDC, XLisp, UMB, VX, Llava, Dfsch, Inlab
Syntax error: MIT, Scheme48/scsh, NexJ, !SigScheme, RScheme, Owl Lisp
Evaluates to `#(a b c)`: Rep, !FemtoLisp
Evaluates to `($bracket-list$ a b c)`: Kawa