VTFL_DECAWM
vd->flags = VTFL_DECAWM | VTFL_CURSORON;
if ((vd->flags & (VTFL_LASTCHAR | VTFL_DECAWM)) ==
(VTFL_LASTCHAR | VTFL_DECAWM)) {
flags |= VTFL_DECAWM;
flags &= ~VTFL_DECAWM;
res = ((flags & VTFL_DECAWM) ? 1 : 2);