354 	if (bufref_valid(&old_curbuf) && old_curbuf.br_buf->b_ml.ml_mfp != NULL)  in open_buffer()
398 bufref_valid(bufref_T *bufref)  in bufref_valid()  function
595 		&& !bufref_valid(&bufref))  in close_buffer()
616 		    && !bufref_valid(&bufref))  in close_buffer()
684     if (!bufref_valid(&bufref))  in close_buffer()
804 		&& !bufref_valid(&bufref))  in buf_freeall()
812 		&& !bufref_valid(&bufref))  in buf_freeall()
820 		&& !bufref_valid(&bufref))  in buf_freeall()
1114 	if (old_curbuf == NULL || !bufref_valid(old_curbuf)  in handle_swap_exists()
1203     if (buf != curbuf && bufref_valid(&bufref) && buf->b_nwindows == 0)  in empty_curbuf()
1357 		if (!bufref_valid(&bufref))  in do_buffer_ext()
1402 	    if (buf != curbuf && bufref_valid(&bufref) && buf->b_nwindows <= 0)  in do_buffer_ext()
1419 	if (au_new_curbuf.br_buf != NULL && bufref_valid(&au_new_curbuf))  in do_buffer_ext()
1542 	    if (!bufref_valid(&bufref))  in do_buffer_ext()
1730 	    || (bufref_valid(&prevbufref)  in set_curbuf()
1731 		&& bufref_valid(&newbufref)  in set_curbuf()
1744 	if (bufref_valid(&prevbufref) && !aborting())  in set_curbuf()
1746 	if (bufref_valid(&prevbufref))  in set_curbuf()
2020 			&& !bufref_valid(&bufref))  in buflist_new()
2221 		&& !bufref_valid(&bufref))  in buflist_new()
2226 		    && !bufref_valid(&bufref))  in buflist_new()
5320 	    if (!bufref_valid(&bufref))  in ex_buffer_all()