extern const char *commit_type;
-struct commit *lookup_commit(unsigned char *sha1);
-struct commit *lookup_commit_reference(unsigned char *sha1);
+struct commit *lookup_commit(const unsigned char *sha1);
+struct commit *lookup_commit_reference(const unsigned char *sha1);
int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space);
+void insert_by_date(struct commit_list **list, struct commit *item);
/** Removes the first commit from a list sorted by date, and adds all
* of its parents.
struct commit *pop_most_recent_commit(struct commit_list **list,
unsigned int mark);
+struct commit *pop_commit(struct commit_list **stack);
+
+int count_parents(struct commit * commit);
#endif /* COMMIT_H */