On 2020-06-02 15:06 -0400, Wolfgang Corcoran-Mathe wrote:
> > Here is the commit summary:
> >
> >    - fold functions accept all values plus nil
> >    - Implement Draft #3 of SRFI 189 (multiple values).
> >    - Remove maybe-contains? and either-contains?.
> >    - clarified -sequence operations
> >    - maybe->list mutation is an error
> >    - Update -sequence functions.
> >    - Remove tests for -contains procedures.
> >    - Update test sets: predicates, accessors, join and bind.
> >    - Delete "obj" argument in either-remove and -filter.
> >    - Update test sets: sequence operations, conversions.
> >    - Fix arity error in either->lisp-values.
> >    - Update test set for map, fold, unfold.
> >    - Return unspecified value from -for-each procedures.
> >    - Fix typos in definition of maybe-if.
> >    - Improve the bargain basement SRFI 78 implementation.
> >    - Comment cleanup and improvement.
> >    - Add tests for `maybe-if'.
> >    - Refactor some tests for readability.
> >    - style typos
> >    - Lefts now contain exactly one value
> >    - Show keywords.
> >    - Use HTML links on HTML pages.
> >    - Fix typo. Publish fourth draft.
>
> These changes have been part of the SRFI 189 repository since
> May 17th (https://srfi-email.schemers.org/srfi-189/msg/14117692/).

Actually, that's wrong.  They were merged long before May 17th:

https://github.com/scheme-requests-for-implementation/srfi-189/pull/4

These are some very old changes.

--
Wolfgang Corcoran-Mathe  <xxxxxx@sigwinch.xyz>

"Heresy is a cradle; orthodoxy, a coffin.  Why should man be
afraid to think, and why should he fear to express his thoughts?"
--Robert G. Ingersoll