--- srfi-13.c.~1.19.~	2003-04-07 08:05:29.000000000 +1000
+++ srfi-13.c	2004-04-06 11:21:46.000000000 +1000
@@ -1,6 +1,6 @@
 /* srfi-13.c --- SRFI-13 procedures for Guile
  *
- * Copyright (C) 2001 Free Software Foundation, Inc.
+ * Copyright (C) 2001, 2004 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
@@ -593,7 +593,7 @@
     {
       while (cstart < cend)
 	{
-	  if (!isspace(cstr[cstart]))
+	  if (!isspace((int) (unsigned char) cstr[cstart]))
 	    break;
 	  cstart++;
 	}
@@ -668,7 +668,7 @@
     {
       while (cstart < cend)
 	{
-	  if (!isspace(cstr[cend - 1]))
+	  if (!isspace((int) (unsigned char) cstr[cend - 1]))
 	    break;
 	  cend--;
 	}
@@ -743,13 +743,13 @@
     {
       while (cstart < cend)
 	{
-	  if (!isspace(cstr[cstart]))
+	  if (!isspace((int) (unsigned char) cstr[cstart]))
 	    break;
 	  cstart++;
 	}
       while (cstart < cend)
 	{
-	  if (!isspace(cstr[cend - 1]))
+	  if (!isspace((int) (unsigned char) cstr[cend - 1]))
 	    break;
 	  cend--;
 	}