extern uschar *search_find(void *, const uschar *, uschar *, int,
const uschar *, int, int, int *, const uschar *);
extern int search_findtype(const uschar *, int);
extern uschar *search_find(void *, const uschar *, uschar *, int,
const uschar *, int, int, int *, const uschar *);
extern int search_findtype(const uschar *, int);