Square brackets

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).

R6RS, so evaluates to (a b c): Racket, Guile, SISC, Vicare, Larceny, Ypsilon, Mosh, IronScheme, Sagittarius

Non-R6RS but evaluates to (a b c): Gauche, Gambit, Chicken, Bigloo, SISC, Scheme 9, STklos, KSi, Schemik, Elk, Oaklisp, SXM, Sizzle, Spark

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

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