[racket] a little macro exercise

From: Neil Van Dyke (neil at neilvandyke.org)
Date: Fri Oct 8 22:34:43 EDT 2010

Shriram Krishnamurthi wrote at 10/08/2010 09:04 PM:
>   http://github.com/shriram/cas-cad-e

And using "syntax-rules":


Note that it was unclear to me where the "break" form could appear, so I 
restricted it to being at the end of the clause, like how people 
typically use "break" in C-like "switch" forms.


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