On Wed, Aug 31, 2011 at 3:53 PM, Denis Washington <denisw@online.de> wrote:
> Am 31.08.2011 02:18, schrieb Alex Shinn:
>> R7RS is a revision of both R5RS and R6RS (we've taken text
>> directly from both).  To say it is closer to one or the other is
>> irrelevant - it is the seventh revision of the Scheme reports,
>> and to call it otherwise is confusing.
>
> Arguably, R7RS is not a revision of R6RS (or R5RS, for that matter) in
> the sense of "one document created by augmenting and/or editing
> another", but more of an reorganization in that the original single
> report is now split into *two* reports. This introduces a whole new
> notion of conformance levels and what consitutes a Scheme implementation
> - which, I'd say, is a deep structural change. Calling this a "revision"
> is, in my opinion, a stretch.

It's much less a reorganization than R6RS was, which
itself is divided into two separate reports.

--
Alex

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