Updates:
Labels: -Patch-review Patch-new
Comment #12 on issue 1650 by [email protected]: using multiple \header in a
block prints only the latest items
http://code.google.com/p/lilypond/issues/detail?id=1650#c12
Issue 1650: merge multiple header specifications.
I am not totally sure this is all correct, but here is:
books and scores get initialized from $defaultheader, this is what toplevel
\header will set, and bookparts are initialized empty so that they will end
up combined with their respective books.
http://codereview.appspot.com/6445053
