Some code from my patch for issue 3161 is copied over to this patch. The fact that Grob::pure_height returns Interval (0,0) as default causes point stencils to be placed in the skyline, potentially effecting vertical spacing.
Separation_item::boxes uses this (0,0) extent to add extra spacing height to certain grobs. To allow this to still happen, we give the grobs without pure height a small empty extent so that the (almost) full compliment of extra spacing height is taken into account. This is why small-empty-interval exists in lily-library.scm. https://codereview.appspot.com/7377046/ _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-devel
