On 2021-06-17 07:31 -1000, Shiro Kawai wrote:
> (That reminds me another tangential issue: Should we be explicit about what
> happens in case when multiple returns occur in X-unfold?)

In the case of 224, I don't know whether we need to be.  Unlike
R7RS with `map', we've waved away the possibility of mutating results
of earlier returns:

"If an implementation allows fxmappings to be mutated, the effects of
combining mutation and the procedures of this library are unspecified."

--
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