LINE_DELETE
if (mark_insdel(sp, LINE_DELETE, lno))
if (ex_g_insdel(sp, LINE_DELETE, lno))
return (scr_update(sp, lno, LINE_DELETE, 1));
case LINE_DELETE:
if (op == LINE_DELETE) {
if (op == LINE_DELETE) {
if (vs_change(sp, ntp->lno + 1, LINE_DELETE))
case LINE_DELETE:
case LINE_DELETE: