[plt-scheme] process.ss bug

Hi all, (DrScheme, version 301.16-svn25may2006)

(let-values ([(stdout stdin pid stderr proc) (process "/usr/bin/ls")])
    (printf "DONE!"))

This results in:
context (lexical binding) expected 5 values, received 1 value:
(#<input-port:subprocess-stdout> #<output-port:subprocess-stdin> 13702
#<input-port:subprocess-stderr> #<procedure:control>)

A bug?

Cheers,
-- 
Paulo Jorge Matos - pocm at sat inesc-id pt
Web: http://sat.inesc-id.pt/~pocm
Computer and Software Engineering
INESC-ID - SAT Group