extern uschar *string_split_message(uschar *);
extern uschar *string_unprinting(uschar *);
#ifdef EXPERIMENTAL_INTERNATIONAL
+extern uschar *string_address_utf8_to_alabel(uschar *, uschar **, int *);
extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);