531     if (bt_terminal(buf) && (buf->b_nwindows == 1 || del_buf))  in close_buffer()
579 	if (buf->b_nwindows == 1)  in close_buffer()
589     if (buf->b_nwindows == 1)  in close_buffer()
642     nwindows = buf->b_nwindows;  in close_buffer()
645     if (buf->b_nwindows > 0)  in close_buffer()
646 	--buf->b_nwindows;  in close_buffer()
649     if (diffopt_hiddenoff() && !unload_buf && buf->b_nwindows == 0)  in close_buffer()
655     if (buf->b_nwindows > 0 || !unload_buf)  in close_buffer()
677     buf->b_nwindows = nwindows;  in close_buffer()
705     if (buf->b_nwindows > 0)  in close_buffer()
706 	--buf->b_nwindows;  in close_buffer()
1203     if (buf != curbuf && bufref_valid(&bufref) && buf->b_nwindows == 0)  in empty_curbuf()
1402 	    if (buf != curbuf && bufref_valid(&bufref) && buf->b_nwindows <= 0)  in do_buffer_ext()
1791     ++curbuf->b_nwindows;  in enter_buffer()
1944 	&& curbuf->b_nwindows <= 1  in curbuf_reusable()
3204 			&& (buf->b_ml.ml_mfp == NULL || buf->b_nwindows == 0))  in buflist_list()
3206 			&& (buf->b_ml.ml_mfp == NULL || buf->b_nwindows != 0))  in buflist_list()
3254 			(buf->b_nwindows == 0 ? 'h' : 'a'),  in buflist_list()
5244 	    if ((wp->w_buffer->b_nwindows > 1  in ex_buffer_all()
5286 	    if (buf->b_nwindows > 0)  in ex_buffer_all()