char * extract_arg_const(const char **arg)
int check_for_argument(char **str, char *arg, int arg_len)
char * remove_trailing_whitespace(const char *start, char *s)
void init_number_or_range(struct get_number_or_range_state *state, const char *string)
char * extract_arg(char **arg)
int get_number_const(const char **)
int number_is_in_list(const char *list, int number)
int get_number_or_range(struct get_number_or_range_state *state)