enum submodule_update_type parse_submodule_update_type(const char *value);
int parse_submodule_update_strategy(const char *value,
struct submodule_update_strategy *dst);
-const char *submodule_strategy_to_string(const struct submodule_update_strategy *s);
+const char *submodule_update_type_to_string(enum submodule_update_type type);
void handle_ignore_submodules_arg(struct diff_options *, const char *);
void show_submodule_diff_summary(struct diff_options *o, const char *path,
struct object_id *one, struct object_id *two,