[racket] scheme_basic_env problem

The reset behavior of scheme_basic_env() broke again. I've pushed a
repair.

(I had a test, but it wasn't set up right for DrDr to run. I've fixed
that, too, so scheme_basic_env() should stop getting broken in this
way.)

Using scheme_main_setup() is right, but then still call
scheme_basic_env() directly to reset.

At Sun, 01 Jan 2012 20:04:59 +0200, David Griffiths wrote:
> Hi all,
> 
> I'm looking into getting fluxus running with the latest version of
> racket, we were having some problems with MZ_REGISTER_STATIC when using
> scheme_basic_env. By changing the order of initialisation I now have
> this working, but resetting the environment (with a second call to
> scheme_basic_env) results in a crash.
> 
> When Gabor Papp looked into this a while back I believe we were
> encouraged to use scheme_main_setup, and the environment it provides
> instead - as a more future proof approach. Is there a way of resetting
> this environment without calling scheme_basic_env?
> 
> cheers,
> 
> dave
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