From b0d81eb83c9e4191bdab9d0982fdabe959220942 Mon Sep 17 00:00:00 2001
From: Chris Hanson <org/chris-hanson/cph>
Date: Tue, 9 Sep 2003 03:46:09 +0000
Subject: [PATCH] Implement equality predicate for character sets.

---
 v7/src/runtime/chrset.scm  | 10 ++++++++--
 v7/src/runtime/equals.scm  |  7 +++++--
 v7/src/runtime/runtime.pkg |  3 ++-
 3 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/v7/src/runtime/chrset.scm b/v7/src/runtime/chrset.scm
index 9a9bba79b..5efd09c0d 100644
--- a/v7/src/runtime/chrset.scm
+++ b/v7/src/runtime/chrset.scm
@@ -1,8 +1,9 @@
 #| -*-Scheme-*-
 
-$Id: chrset.scm,v 14.19 2003/03/08 02:06:31 cph Exp $
+$Id: chrset.scm,v 14.20 2003/09/09 03:45:52 cph Exp $
 
-Copyright (c) 1988-2001 Massachusetts Institute of Technology
+Copyright 1988,1995,1997,1998,2000,2001 Massachusetts Institute of Technology
+Copyright 2003 Massachusetts Institute of Technology
 
 This file is part of MIT/GNU Scheme.
 
@@ -84,6 +85,11 @@ USA.
 	((fix:= code char-set-table-length))
       (vector-8b-set! table code (if (predicate (integer->char code)) 1 0)))
     (make-char-set table)))
+
+(define (char-set=? c1 c2)
+  (guarantee-char-set c1 'CHAR-SET=?)
+  (guarantee-char-set c2 'CHAR-SET=?)
+  (string=? (char-set-table c1) (char-set-table c2)))
 
 (define (char-set-members char-set)
   (guarantee-char-set char-set 'CHAR-SET-MEMBERS)
diff --git a/v7/src/runtime/equals.scm b/v7/src/runtime/equals.scm
index 5a45a47f0..6b3b2b1dc 100644
--- a/v7/src/runtime/equals.scm
+++ b/v7/src/runtime/equals.scm
@@ -1,8 +1,8 @@
 #| -*-Scheme-*-
 
-$Id: equals.scm,v 14.11 2003/02/14 18:28:32 cph Exp $
+$Id: equals.scm,v 14.12 2003/09/09 03:46:00 cph Exp $
 
-Copyright (c) 1988-1999, 2001 Massachusetts Institute of Technology
+Copyright 1987,1991,1993,1994,2001,2003 Massachusetts Institute of Technology
 
 This file is part of MIT/GNU Scheme.
 
@@ -72,6 +72,9 @@ USA.
 		((pathname? x)
 		 (and (pathname? y)
 		      (pathname=? x y)))
+		((char-set? x)
+		 (and (char-set? y)
+		      (char-set=? x y)))
 		(else #f))
 	  (and (number? x)
 	       (number? y)
diff --git a/v7/src/runtime/runtime.pkg b/v7/src/runtime/runtime.pkg
index d7ab4898b..800898051 100644
--- a/v7/src/runtime/runtime.pkg
+++ b/v7/src/runtime/runtime.pkg
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: runtime.pkg,v 14.455 2003/09/05 20:51:01 cph Exp $
+$Id: runtime.pkg,v 14.456 2003/09/09 03:46:09 cph Exp $
 
 Copyright 1988,1989,1990,1991,1992,1993 Massachusetts Institute of Technology
 Copyright 1994,1995,1996,1997,1998,1999 Massachusetts Institute of Technology
@@ -969,6 +969,7 @@ USA.
 	  char-set:standard
 	  char-set:upper-case
 	  char-set:whitespace
+	  char-set=?
 	  char-set?
 	  char-standard?
 	  char-upper-case?
-- 
2.25.1