check_subcmd_and_options
if (check_subcmd_and_options(subcmd, opt, inst_subcmds, &f) ==
ret = check_subcmd_and_options(subcmd, opt, menu_subcmds, &f);
ret = check_subcmd_and_options(subcmd, opt, arch_subcmds, &f);
extern error_t check_subcmd_and_options(char *, char *, subcmd_defn_t *,
ret = check_subcmd_and_options(subcmd, opt, menu_subcmds, &f);