int parse_opt_expiry_date_cb(const struct option *, const char *, int);
int parse_opt_color_flag_cb(const struct option *, const char *, int);
int parse_opt_verbosity_cb(const struct option *, const char *, int);
int parse_opt_expiry_date_cb(const struct option *, const char *, int);
int parse_opt_color_flag_cb(const struct option *, const char *, int);
int parse_opt_verbosity_cb(const struct option *, const char *, int);