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From: gumby@Cygnus.COM (David V. Wallace)
Newsgroups: comp.lang.scheme
Subject: Multiple return values
Message-ID: <GUMBY.91Apr4152228@Cygnus.COM>
Date: 4 Apr 91 21:22:28 GMT
References: <9104042101.AA28583@kuwait>
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Organization: Cygnus Support, Palo Alto, California
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In-Reply-To: jonl%kuwait@lucid.COM's message of 4 Apr 91 21:01:00 GMT


   Date: 4 Apr 91 21:01:00 GMT
   From: jonl%kuwait@lucid.COM (Jon L White)

   Your particular suggestions look fine to me, but what's missing from
   the dialogue is the concept, elaborately worked out in the CL world,
   of constructs that (1) truncate multiple-values down to one value, 
   and (2) "pass back" multiple values.

I always enjoyed the comment in the Chine Ual that read (for several
editions) "Multiple values are not returned through an unwind-protect.
I'd like to fix it but it's hard."

When it finally was fixed that comment was sadly not replaced by any
note indicating how difficult it in fact turned out to have been.