extern int prefer_symlink_refs;
extern int log_all_ref_updates;
extern int warn_ambiguous_refs;
-extern int diff_rename_limit_default;
extern int shared_repository;
extern const char *apply_default_whitespace;
int git_config_perm(const char *var, const char *value);
int adjust_shared_perm(const char *path);
int safe_create_leading_directories(char *path);
-size_t safe_strncpy(char *, const char *, size_t);
char *enter_repo(char *path, int strict);
/* Read and unpack a sha1 file into memory, write memory to a sha1 file */