bt_dontwrite(buf_T *buf)
{
    return buf != NULL && (buf->b_p_bt[0] == 'n'
		 || buf->b_p_bt[0] == 't'
		 || buf->b_p_bt[0] == 'p');
}
bt_dontwrite(buf_T *buf)
{
    return buf != NULL && (buf->b_p_bt[0] == 'n'
		 || buf->b_p_bt[0] == 't'
		 || buf->b_p_bt[0] == 'p');
}