Comment #4 on issue 3162 by [email protected]: Patch: Eliminates pure-print-callbacks list
http://code.google.com/p/lilypond/issues/detail?id=3162
The expected symptoms are that horizontal spacing is no longer linked to pre-defined stencil grobs but instead height functions for grobs. So the flag change is expected. Ditto for tablature-repeat, where the spacing is more uniform.
I agree that the graphviz stuff is crazy...not sure what the regtest does but it makes sense that this'd show a lot of changes as a lot of property definitions are changing.
