111 	    tp->tp_diffbuf[i] = NULL;  in diff_buf_delete()
141 		curtab->tp_diffbuf[i] = NULL;  in diff_buf_adjust()
168 	if (curtab->tp_diffbuf[i] == NULL)  in diff_buf_add()
170 	    curtab->tp_diffbuf[i] = buf;  in diff_buf_add()
188 	if (curtab->tp_diffbuf[i] != NULL)  in diff_buf_clear()
190 	    curtab->tp_diffbuf[i] = NULL;  in diff_buf_clear()
206 	if (curtab->tp_diffbuf[idx] == buf)  in diff_buf_idx()
221 	if (tp->tp_diffbuf[idx] == buf)  in diff_buf_idx_tp()
345 		if (tp->tp_diffbuf[i] != NULL && i != idx)  in diff_mark_adjust_tp()
452 			if (tp->tp_diffbuf[i] != NULL && i != idx)  in diff_mark_adjust_tp()
484 		if (tp->tp_diffbuf[i] != NULL)  in diff_mark_adjust_tp()
504 	    if (tp->tp_diffbuf[i] != NULL && dp->df_count[i] != 0)  in diff_mark_adjust_tp()
575 	if (tp->tp_diffbuf[i_org] != NULL)  in diff_check_unchanged()
595 	    line_org = vim_strsave(ml_get_buf(tp->tp_diffbuf[i_org],  in diff_check_unchanged()
601 		if (tp->tp_diffbuf[i_new] == NULL)  in diff_check_unchanged()
608 		if (diff_cmp(line_org, ml_get_buf(tp->tp_diffbuf[i_new],  in diff_check_unchanged()
620 		if (tp->tp_diffbuf[i_new] != NULL)  in diff_check_unchanged()
643 	if (tp->tp_diffbuf[i] != NULL)  in diff_check_sanity()
645 				      > tp->tp_diffbuf[i]->b_ml.ml_line_count)  in diff_check_sanity()
859 	    buf = curtab->tp_diffbuf[idx_new];  in diff_try_update()
865     buf = curtab->tp_diffbuf[idx_orig];  in diff_try_update()
872 	buf = curtab->tp_diffbuf[idx_new];  in diff_try_update()
921 	if (curtab->tp_diffbuf[idx] != NULL  in diff_internal_failed()
922 		&& curtab->tp_diffbuf[idx]->b_diff_failed)  in diff_internal_failed()
953 	if (curtab->tp_diffbuf[idx_orig] != NULL)  in ex_diffupdate()
960 	if (curtab->tp_diffbuf[idx_new] != NULL)  in ex_diffupdate()
1737 		    if (curtab->tp_diffbuf[i] != NULL)  in diff_read()
1767 		if (curtab->tp_diffbuf[i] != NULL)  in diff_read()
1797 		if (curtab->tp_diffbuf[i] != NULL)  in diff_read()
1910 	    if (i != idx && curtab->tp_diffbuf[i] != NULL)  in diff_check()
1926 		if (i != idx && curtab->tp_diffbuf[i] != NULL  in diff_check()
1949 	if (curtab->tp_diffbuf[i] != NULL && dp->df_count[i] > maxcount)  in diff_check()
1970 	line = vim_strsave(ml_get_buf(curtab->tp_diffbuf[idx1],  in diff_equal_entry()
1974 	cmp = diff_cmp(line, ml_get_buf(curtab->tp_diffbuf[idx2],  in diff_equal_entry()
2131 		if (curtab->tp_diffbuf[i] != NULL  in diff_set_topline()
2429 	if (curtab->tp_diffbuf[i] != NULL && i != idx)  in diff_find_change()
2435 	    line_new = ml_get_buf(curtab->tp_diffbuf[i],  in diff_find_change()
2534 	if (curtab->tp_diffbuf[i] == wp->w_buffer)  in diff_infold()
2536 	else if (curtab->tp_diffbuf[i] != NULL)  in diff_infold()
2636 	    if (curtab->tp_diffbuf[idx_other] != curbuf  in ex_diffgetput()
2637 		    && curtab->tp_diffbuf[idx_other] != NULL)  in ex_diffgetput()
2640 				     || curtab->tp_diffbuf[idx_other]->b_p_ma)  in ex_diffgetput()
2655 	    if (curtab->tp_diffbuf[i] != curbuf  in ex_diffgetput()
2656 		    && curtab->tp_diffbuf[i] != NULL  in ex_diffgetput()
2657 		    && (eap->cmdidx != CMD_diffput || curtab->tp_diffbuf[i]->b_p_ma))  in ex_diffgetput()
2723 	aucmd_prepbuf(&aco, curtab->tp_diffbuf[idx_other]);  in ex_diffgetput()
2812 		if (nr > curtab->tp_diffbuf[idx_from]->b_ml.ml_line_count)  in ex_diffgetput()
2814 		p = vim_strsave(ml_get_buf(curtab->tp_diffbuf[idx_from],  in ex_diffgetput()
2838 		    if (curtab->tp_diffbuf[i] != NULL && i != idx_from  in ex_diffgetput()
2942 	    if (curtab->tp_diffbuf[i] == wp->w_buffer && i != skip_idx)  in diff_fold_update()