Re: Fixing null-environment and scheme-report-environment

[Guillermo J. Rozas <gjr@martigny.ai.mit.edu>]

|   Date: Wed, 18 Feb 1998 18:41:27 -0500
|   From: Richard Kelsey <kelsey@research.nj.nec.com>
|   Subject: Re: Fixing null-environment and scheme-report-environment
|   
|   The discussion has convinced me that I was wrong, and some
|   change is required.  I guess the intent wasn't as clear as I
|   thought.  So here is a new version, which is essentially Kent
|   Pitman's version with Bill Rozas's final paragraph.
|   
|                                         -Richard
|   
|    (scheme-report-environment _version_)                procedure
|    (null-environment _version_)                         procedure
|   
|    _Version_ must be the exact integer 5, corresponding to this
|    revision of the Scheme report (the Revised^5 Report on Scheme).
|    SCHEME-REPORT-ENVIRONMENT returns a specifier for an environment that 
|    is empty except for all bindings defined in this report that are either
|    required or both optional and supported by the implementation.
|    NULL-ENVIRONMENT returns a specifier for an environment that is empty
|    except for the (syntactic) bindings for all syntactic keywords 
|    defined in this report that are either required or both optional and
|    supported by the implementation.
|   
|    Other values of _version_ can be used to specify environments
|    matching past revisions of this report, but their support is not
|    required.  An implementation will signal an error if _version_
|    is neither 5, nor another value supported by the implementation.
|   

That looks good to me.

Kents?