char *base_name PARAMS ((char const *));
char *find_backup_file_name PARAMS ((char const *, enum backup_type));
enum backup_type get_version PARAMS ((char const *));
void addext PARAMS ((char *, char const *, int));
char *base_name PARAMS ((char const *));
char *find_backup_file_name PARAMS ((char const *, enum backup_type));
enum backup_type get_version PARAMS ((char const *));
void addext PARAMS ((char *, char const *, int));