GRID_ATTR_UNDERSCORE_2
(attr & GRID_ATTR_UNDERSCORE_2) ? "double-underscore," : "",
{ "double-underscore", GRID_ATTR_UNDERSCORE_2 },
{ GRID_ATTR_UNDERSCORE_2, 42 },
gc->attr |= GRID_ATTR_UNDERSCORE_2;
gc->attr |= GRID_ATTR_UNDERSCORE_2;
GRID_ATTR_UNDERSCORE_2| \
else if (changed & GRID_ATTR_UNDERSCORE_2)