case 'u':
      /* user:password  */
      GetStr(&config->userpwd, nextarg);
      cleanarg(nextarg);
      break;

void cleanarg(char *str)
{
#ifdef HAVE_WRITABLE_ARGV
  /* now that GetStr has copied the contents of nextarg, wipe the next
   * argument out so that the username:password isn't displayed in the
   * system process list */
  if(str) {
    size_t len = strlen(str);
    memset(str, ' ', len);
  }
#else
  (void)str;
#endif
}

        char *nextarg = (i < (argc - 1))
          ? curlx_convert_tchar_to_UTF8(argv[i + 1])
          : NULL;

        result = getparameter(orig_opt, nextarg, &passarg, global, config);

        curlx_unicodefree(nextarg);

#if defined(UNICODE) && defined(WIN32)

#define curlx_convert_UTF8_to_tchar(ptr) curlx_convert_UTF8_to_wchar((ptr))
#define curlx_convert_tchar_to_UTF8(ptr) curlx_convert_wchar_to_UTF8((ptr))

typedef union {
  unsigned short       *tchar_ptr;
  const unsigned short *const_tchar_ptr;
  unsigned short       *tbyte_ptr;
  const unsigned short *const_tbyte_ptr;
} xcharp_u;

#else

#define curlx_convert_UTF8_to_tchar(ptr) (strdup)(ptr)
#define curlx_convert_tchar_to_UTF8(ptr) (strdup)(ptr)

        char *nextarg = (i < (argc - 1)) ? argv[i + 1] : NULL;
        result = getparameter(flag, nextarg, &passarg, global, config);