+
+ Interval y (il->pure_height (ycommon, 0, very_large));
+ Interval x (il->extent (pc, X_AXIS));
+
+ Interval extra = robust_scm2interval (elts[i]->get_property ("extra-spacing-width"),
+ Interval (-0.1, 0.1));
+ x[LEFT] += extra[LEFT];
+ x[RIGHT] += extra[RIGHT];
+ if (to_boolean (elts[i]->get_property ("infinite-spacing-height")))
+ y = Interval (-infinity_f, infinity_f);
+
+ if (!x.is_empty () && !y.is_empty ())
+ out.push_back (Box (x, y));