I have added various new columns to the feature groups spreadsheet at
<http://tinyurl.com/feature-groups>.  Essential Scheme is described at
http://lists.r6rs.org/pipermail/r6rs-discuss/2009-September/004638.html .

At <http://tinyurl.com/thing-one>, I have added make-list from SRFI-1
for symmetry with the other make-* constructors.  I have also added
rational-expt for use when expt is not available or undesirable:
its arguments must be a rational number and a non-negative integer
respectively, which confines the range to be rational.

I have definitively abandoned any attempt to propose standard custom
ports or date and time services.  SRFI-19 is well-accepted, but the
primitives on which it depends are not (only PLT and Chicken have them);
other systems presumably implement the SRFI using their own primitives.

I have put % signs in front of the feature group names so as not to
confuse them with bound identifiers.  I have renamed the %flonums feature
group (which controls the transcendental functions) to %inexact.  I have
also migrated load (which previously required both the %files and the
%eval features) to its own feature group.

There have been various other minor modifications.  In any case,
<http://tinyurl.com/thing-one> and the document it links to always
represent the state of what I have proposed at any given time.

-- 
John Cowan   [email protected]    http://ccil.org/~cowan
I come from under the hill, and under the hills and over the hills my paths
led. And through the air. I am he that walks unseen.  I am the clue-finder,
the web-cutter, the stinging fly. I was chosen for the lucky number.  --Bilbo

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