int redisFormatCommand(char **target, const char *format, ...) {
    va_list ap;
    int len;
    va_start(ap,format);
    len = redisvFormatCommand(target,format,ap);
    va_end(ap);

    /* The API says "-1" means bad result, but we now also return "-2" in some
     * cases.  Force the return value to always be -1. */
    if (len < 0)
        len = -1;

    return len;
}
int redisFormatCommand(char **target, const char *format, ...) {
    va_list ap;
    int len;
    va_start(ap,format);
    len = redisvFormatCommand(target,format,ap);
    va_end(ap);

     
    if (len < 0)
        len = -1;

    return len;
}