char *new_name (const char *, const char *);
char *safer_name_suffix (char const *, bool);
size_t stripped_path_len (char const *file_name, size_t num);
char *new_name (const char *, const char *);
char *safer_name_suffix (char const *, bool);
size_t stripped_path_len (char const *file_name, size_t num);