extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc);
+extern int get_oid(const char *str, struct object_id *oid);
+
typedef int each_abbrev_fn(const unsigned char *sha1, void *);
extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);