Comment #7 on issue 3160 by [email protected]: chord names pushed into the
staff
http://code.google.com/p/lilypond/issues/detail?id=3160
Conceptually, things that implement the axis-group-interface have widths,
heights, and skylines that are 100% linked to the elements they contain. I
think it's important to maintain this distinction. So, for example, you
could create a transparent stub grob that causes the VerticalAxisGroup of
Dynamics to always have a skyline. But this would pose the issue of where
to put said baseline. For example, in the case:
<<
\Staff { c,,,,,4 }
\Lyrics { }
\Staff { r2 c'''''4 }
where is the baseline established and how long is it? If it is at the same
X position as one of the two notes, it will cause radically different
spacing then if it is between them. That is why I think these axis groups
should be removed all together if they have no elements - it is a
conceptually cleaner approach.
To me, removeEmpty means "if there is no musical information, remove."
That is, if there are no notes. There may be, however, rests, time
signatures, etc.. However, if there are no grobs period, then the
containing axis group is empty and as it has no height apart from its
elements. Thus, a baseline cannot be established to it because it
is "solid" nowhere.
