+ * Revision 1.4 2001/06/22 19:36:18 mdw
+ * Include @<ctype.h>@.
+ *
+ * Revision 1.3 2001/01/20 12:06:21 mdw
+ * Be more conservative in base-64 encoding.
+ *
+ * Revision 1.2 1999/09/03 08:02:05 mdw
+ * Make `#' a special character which needs escaping.
+ *