Re: [Lilypond-auto] Issue 4564 in lilypond: make Grob an abstract class

[lilypond]

Comment #4 on issue 4564 by address@hidden: make Grob an abstract class
https://code.google.com/p/lilypond/issues/detail?id=4564

Re #2: where is the point in that?  Basically, you are declaring something  
as Accidental_interface * which isn't.  You cannot call any member function  
of Accidental_interface through it since the underlying Grob object is not  
derived from Accidental_interface.

My "hopes to convert scheme callbacks into member functions" don't extent  
to calling "member functions" on objects not actually derived from the  
class of which the member function is being called.

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