160 static struct edstate	*undo;  variable
561 			if (es->cursor == undo->cursor) {  in vi_insert()
577 		if (insert == REPLACE && es->cursor < undo->linelen)  in vi_insert()
578 			memcpy(es->cbuf + tcursor, undo->cbuf + tcursor,  in vi_insert()
715 			undo->winleft = es->winleft;  in vi_cmd()
716 			memmove(undo->cbuf, es->cbuf, es->linelen);  in vi_cmd()
717 			undo->linelen = es->linelen;  in vi_cmd()
718 			undo->cursor = es->cursor;  in vi_cmd()
1012 			es = undo;  in vi_cmd()
1013 			undo = t;  in vi_cmd()
1432 	undo = &undobuf;  in edit_reset()
1433 	undo->cbufsize = len;  in edit_reset()
1435 	es->linelen = undo->linelen = 0;  in edit_reset()
1436 	es->cursor = undo->cursor = 0;  in edit_reset()
1437 	es->winleft = undo->winleft = 0;  in edit_reset()