ksh_getopt_reset
ksh_getopt_reset(&user_opt,
ksh_getopt_reset(&builtin_opt, GF_ERROR);
ksh_getopt_reset(&opt, 0);
ksh_getopt_reset(&builtin_opt, GF_ERROR);
ksh_getopt_reset(&builtin_opt, GF_ERROR);
ksh_getopt_reset(&builtin_opt, 0);
ksh_getopt_reset(&go, GF_ERROR|GF_PLUSOPT);
void ksh_getopt_reset(Getopt *, int);