GRID_ATTR_OVERLINE
(attr & GRID_ATTR_OVERLINE) ? "overline," : "",
{ "overline", GRID_ATTR_OVERLINE }
{ GRID_ATTR_OVERLINE, 53 },
gc->attr |= GRID_ATTR_OVERLINE;
gc->attr &= ~GRID_ATTR_OVERLINE;
if (changed & GRID_ATTR_OVERLINE)