Birdtest: Put hard new lines for strict line width

static void

bt_log_result(int result, const char *fmt, va_list argptr)

{

  char fmt_buf[BT_BUFFER_SIZE];

  char msg_buf[BT_BUFFER_SIZE];

  static char msg_buf[BT_BUFFER_SIZE];

  char *pos;

  snprintf(msg_buf, sizeof(msg_buf), "%s%s%s%s",

  vsnprintf(pos, sizeof(msg_buf) - (pos - msg_buf), fmt, argptr);

  /* 'll' means here Last Line */

  uint cols = get_num_terminal_cols();

  uint ll_len = (strlen(msg_buf) % cols) + BT_PROMPT_OK_FAIL_STRLEN;

  uint ll_offset = (ll_len / get_num_terminal_cols() + 1) * cols - BT_PROMPT_OK_FAIL_STRLEN;

  uint offset = ll_offset + (strlen(msg_buf) / cols) * cols;

  snprintf(fmt_buf, sizeof(fmt_buf), "%%-%us%%s\n", offset);

  int chrs = 0;

  for (int i = 0; i < strlen(msg_buf); i += get_num_terminal_cols())

  {

    if (i)

      printf("\n");

    char *stop = msg_buf + i + get_num_terminal_cols();

    char backup = *stop;

    *stop = 0;

    chrs = printf("%s", msg_buf + i);

    *stop = backup;

  }

  int offset = get_num_terminal_cols() - chrs - BT_PROMPT_OK_FAIL_STRLEN;

  if (offset < 0)

  {

    printf("\n");

    offset = get_num_terminal_cols() - BT_PROMPT_OK_FAIL_STRLEN;

  }

  for (int i = 0; i < offset; i++)

    putchar(' ');

  const char *result_str = is_terminal ? BT_PROMPT_OK : BT_PROMPT_OK_NO_COLOR;

  if (result != BT_SUCCESS)

    result_str = is_terminal ? BT_PROMPT_FAIL : BT_PROMPT_FAIL_NO_COLOR;

  printf(fmt_buf, msg_buf, result_str);

  printf("%s\n", result_str);

}

/**