Aubrey Jaffer <xxxxxx@alum.mit.edu> writes:

> The first task in writing text-processing programs is to separate the
> input text into words, punctuation, and whitespace.  Could R6RS deal
> with Unicode text as words, punctuation, and whitespace?
>
>   Unicode-read port
>
> would return a word, punctuation, or whitespace object; or an
> eof-object.

An interesting idea.  But I surely hope that you aren't assuming that
text consists of a bunch of words separated by whitespace and/or
punctuation.  In some languages there is essentially no whitespace.
(For example, this is how Japanese books are traditionally printed.)