Method error

src/e9tool/e9frontend.cpp:75–90

* Report an error and exit. */

 * Report an error and exit.
 */
void NO_RETURN e9tool::error(const char *msg, ...)
{
    flushWarnings();

    fprintf(stderr, "%serror%s  : ",
        (option_is_tty? "\33[31m": ""),
        (option_is_tty? "\33[0m" : ""));

    va_list ap;
    va_start(ap, msg);
    vfprintf(stderr, msg, ap);
    va_end(ap);
    putc('\n', stderr);

    _Exit(EXIT_FAILURE);
}

/*
 * Print a warning message.