generic_window_size
extern int generic_window_size(int fd, void *unused, unsigned short *rows_out,
.window_size = generic_window_size,
.window_size = generic_window_size,
.window_size = generic_window_size,
.window_size = generic_window_size,
.window_size = generic_window_size,
.window_size = generic_window_size,
.window_size = generic_window_size,