line_length = ((l_col = getenv("COLUMNS")) == NULL ? 0 : atoi(l_col));
if (line_length == 0 && isatty(STDOUT_FILENO) &&
ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1)
line_length = ((l_col = getenv("COLUMNS")) == NULL ? 0 : atoi(l_col));
if (line_length == 0 && isatty(STDOUT_FILENO) &&
ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) != -1)