Andy Wingo scripsit:

> It's mentioned that "start" and "end" may be omitted, and their default
> values are mentioned.  If that is the case then the entry headings which
> omit "start" and "end" may also be omitted.

As throughout the report, the entry headings are definitive on what may and
what may not be omitted.

> Similarly, one could allow the "start" and "end" arguments to
> "substring" to be omitted, this making it the exact same as
> "string-copy".

One could, but there is no benefit to this extension to R5RS.

--
John Cowan    http://ccil.org/~cowan    cowan@ccil.org
SAXParserFactory [is] a hideous, evil monstrosity of a class that should
be hung, shot, beheaded, drawn and quartered, burned at the stake,
buried in unconsecrated ground, dug up, cremated, and the ashes tossed
in the Tiber while the complete cast of Wicked sings "Ding dong, the
witch is dead."  --Elliotte Rusty Harold on xml-dev

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