From: Michael R. Blair <edu/mit/csail/zurich/ziggy>
Date: Thu, 25 May 1995 18:53:06 +0000 (+0000)
Subject: Corrected printed representation of undefined values: they are _NOT_ useless
X-Git-Tag: 20090517-FFI~6271
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=4eb7d8855168eb900b49044076ea939d8419d3fb;p=mit-scheme.git

Corrected printed representation of undefined values: they are _NOT_ useless
since they supply synchronization points and help programmers to avoid ill-
behaved implementation dependencies.
---

diff --git a/v7/src/runtime/usrint.scm b/v7/src/runtime/usrint.scm
index 25e333a1d..9f42d7458 100644
--- a/v7/src/runtime/usrint.scm
+++ b/v7/src/runtime/usrint.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: usrint.scm,v 1.13 1994/11/04 20:06:03 cph Exp $
+$Id: usrint.scm,v 1.14 1995/05/25 18:53:06 ziggy Exp $
 
 Copyright (c) 1991-94 Massachusetts Institute of Technology
 
@@ -233,7 +233,7 @@ MIT in each case. |#
       (write-string ";" port)
       (if (and write-result:undefined-value-is-special?
 	       (undefined-value? object))
-	  (write-string "No useful value" port)
+	  (write-string "Unspecified return value" port)
 	  (begin
 	    (write-string "Value" port)
 	    (if hash-number
@@ -278,4 +278,4 @@ MIT in each case. |#
 (define (port/read-finish port)
   (let ((operation (port/operation port 'READ-FINISH)))
     (if operation
-	(operation port))))
\ No newline at end of file
+	(operation port))))