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Re: [Scheme-reports] [r6rs-discuss] Scheme pattern matching: the case for (case)

On Wed, 2010-12-22 at 15:55 -0500, Andre van Tonder wrote:

> R5RS chapter 6 intro:
> A program may use a top-level definition to bind any variable. It may 
> subsequently alter any such binding by an assignment (see 4.1.6). These 
> operations DO NOT MODIFY the behavior of Scheme's built-in procedures.
> Andre

But, in R6RS they are in the base library and no longer built-in. 

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