===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/cvs/buf.c,v
retrieving revision 1.51
retrieving revision 1.52
diff -c -r1.51 -r1.52
*** src/usr.bin/cvs/buf.c	2006/05/27 03:30:30	1.51
--- src/usr.bin/cvs/buf.c	2006/05/28 22:43:54	1.52
***************
*** 1,4 ****
! /*	$OpenBSD: buf.c,v 1.51 2006/05/27 03:30:30 joris Exp $	*/
  /*
   * Copyright (c) 2003 Jean-Francois Brousseau <jfb@openbsd.org>
   * All rights reserved.
--- 1,4 ----
! /*	$OpenBSD: buf.c,v 1.52 2006/05/28 22:43:54 joris Exp $	*/
  /*
   * Copyright (c) 2003 Jean-Francois Brousseau <jfb@openbsd.org>
   * All rights reserved.
***************
*** 451,454 ****
--- 451,480 ----
  		return (NULL);
  
  	return (b->cb_buf + off);
+ }
+ 
+ int
+ cvs_buf_differ(BUF *b1, BUF *b2)
+ {
+ 	char *c1, *c2;
+ 	int i, l1, l2, len, ret;
+ 
+ 	l1 = cvs_buf_len(b1);
+ 	l2 = cvs_buf_len(b2);
+ 	len = MIN(l1, l2);
+ 
+ 	if (l1 != l2)
+ 		return (1);
+ 
+ 	c1 = cvs_buf_release(b1);
+ 	c2 = cvs_buf_release(b2);
+ 
+ 	ret = memcmp(c1, c2, len);
+ 
+ 	if (c1 != NULL)
+ 		xfree(c1);
+ 	if (c2 != NULL)
+ 		xfree(c2);
+ 
+ 	return (ret);
  }