3457 static struct edstate	*undo;  variable
3512 	undo = &undobuf;  in x_vi()
3513 	undo->cbufsize = es->cbufsize = len > LINE ? LINE : len;  in x_vi()
3515 	es->linelen = undo->linelen = 0;  in x_vi()
3516 	es->cursor = undo->cursor = 0;  in x_vi()
3517 	es->winleft = undo->winleft = 0;  in x_vi()
3897 			if (es->cursor == undo->cursor) {  in vi_insert()
3904 			if (es->cursor >= undo->linelen)  in vi_insert()
3907 				es->cbuf[es->cursor] = undo->cbuf[es->cursor];  in vi_insert()
4038 			undo->winleft = es->winleft;  in vi_cmd()
4039 			memmove(undo->cbuf, es->cbuf, es->linelen);  in vi_cmd()
4040 			undo->linelen = es->linelen;  in vi_cmd()
4041 			undo->cursor = es->cursor;  in vi_cmd()
4337 			es = undo;  in vi_cmd()
4338 			undo = t;  in vi_cmd()