Sync with gnulib.

lib/mbswidth.h

@@ -1,5 +1,5 @@
 /* Determine the number of screen columns needed for a string.
-   Copyright (C) 2000-2002 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -17,6 +17,14 @@
 
 #include <stddef.h>
 
+/* Avoid a clash of our mbswidth() with a function of the same name defined
+   in UnixWare 7.1.1 <wchar.h>.  We need this #include before the #define
+   below.  */
+#if HAVE_WCHAR_H
+# include <wchar.h>
+#endif
+
+
 /* Optional flags to influence mbswidth/mbsnwidth behavior.  */
 
 /* If this bit is set, return -1 upon finding an invalid or incomplete
@@ -28,6 +36,7 @@
    control characters and 1 otherwise.  */
 #define MBSW_REJECT_UNPRINTABLE	2
 
+
 /* Returns the number of screen columns needed for STRING.  */
 #define mbswidth gnu_mbswidth  /* avoid clash with UnixWare 7.1.1 function */
 extern int mbswidth (const char *string, int flags);