From cc7e01ceddaae8723feeedf33cca4fd106111025 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 18 Mar 2008 09:10:45 +0000
Subject: [PATCH] Use SRFI-1 in `(oop goops util)'.

---
 oop/ChangeLog      |  6 ++++++
 oop/goops/util.scm | 45 +++++----------------------------------------
 2 files changed, 11 insertions(+), 40 deletions(-)

diff --git a/oop/ChangeLog b/oop/ChangeLog
index 99c342844..6727ef3fb 100644
--- a/oop/ChangeLog
+++ b/oop/ChangeLog
@@ -1,3 +1,9 @@
+2008-03-18  Ludovic Courtès  <ludo@gnu.org>
+
+	* goops/util.scm (mapappend): Now an alias for SRFI-1's
+	`append-map', which is more efficient.
+	(every, any): Used and re-exported from SRFI-1.
+
 2008-03-12  Ludovic Courtès  <ludo@gnu.org>
 
 	* goops/describe.scm (describe): Provide `describe' (symbol),
diff --git a/oop/goops/util.scm b/oop/goops/util.scm
index 33e871c54..b6276aa37 100644
--- a/oop/goops/util.scm
+++ b/oop/goops/util.scm
@@ -1,4 +1,4 @@
-;;;; 	Copyright (C) 1999, 2000, 2001, 2003, 2006 Free Software Foundation, Inc.
+;;;; 	Copyright (C) 1999, 2000, 2001, 2003, 2006, 2008 Free Software Foundation, Inc.
 ;;;; 
 ;;;; This library is free software; you can redistribute it and/or
 ;;;; modify it under the terms of the GNU Lesser General Public
@@ -17,9 +17,10 @@
 
 
 (define-module (oop goops util)
-  :export (any every
-	   mapappend find-duplicate top-level-env top-level-env?
+  :export (mapappend find-duplicate top-level-env top-level-env?
 	   map* for-each* length* improper->proper)
+  :use-module (srfi srfi-1)
+  :re-export  (any every)
   :no-backtrace
   )
 
@@ -28,43 +29,7 @@
 ;;; {Utilities}
 ;;;
 
-(define (any pred lst . rest)
-  (if (null? rest) ;fast path
-      (and (not (null? lst))
-           (let loop ((head (car lst)) (tail (cdr lst)))
-             (if (null? tail)
-                 (pred head)
-                 (or (pred head)
-                     (loop (car tail) (cdr tail))))))
-      (let ((lsts (cons lst rest)))
-        (and (not (any null? lsts))
-             (let loop ((heads (map car lsts)) (tails (map cdr lsts)))
-               (if (any null? tails)
-                   (apply pred heads)
-                   (or (apply pred heads)
-                       (loop (map car tails) (map cdr tails)))))))))
-
-(define (every pred lst . rest)
-  (if (null? rest) ;fast path
-      (or (null? lst)
-          (let loop ((head (car lst)) (tail (cdr lst)))
-            (if (null? tail)
-                (pred head)
-                (and (pred head)
-                     (loop (car tail) (cdr tail))))))
-      (let ((lsts (cons lst rest)))
-        (or (any null? lsts)
-            (let loop ((heads (map car lsts)) (tails (map cdr lsts)))
-              (if (any null? tails)
-                  (apply pred heads)
-                  (and (apply pred heads)
-                       (loop (map car tails) (map cdr tails)))))))))
-
-(define (mapappend func . args)
-  (if (memv '()  args)
-      '()
-      (append (apply func (map car args))
-	      (apply mapappend func (map cdr args)))))
+(define mapappend append-map)
 
 (define (find-duplicate l)	; find a duplicate in a list; #f otherwise
   (cond