__attribute__((format (printf, 1, 2)))
void advise(const char *advice, ...);
int error_resolve_conflict(const char *me);
-extern void NORETURN die_resolve_conflict(const char *me);
+void NORETURN die_resolve_conflict(const char *me);
void NORETURN die_conclude_merge(void);
void detach_advice(const char *new_name);