Issue 786 in lilypond: Extenders in lyrics stop prematurely if a single underscore is found

[codesite-noreply]

Comment #5 on issue 786 by address@hidden: Extenders in lyrics stop  
prematurely if a single underscore is found
http://code.google.com/p/lilypond/issues/detail?id=786

I've done some looking into this, and am not sure of the best way to fix  
this. My
original patch (the one that caused the regression) added the following  
code:
if (!melisma_busy (voice))
{
   completize_extender (pending_extender_);
   pending_extender_ = 0;
}

The more I think about it, the more I think that the patch is correct - if
melisma_busy is intended to behave like I think it should. The  
documentation for the
melisma_busy function doesn't make it clear, but I would expect, based on  
its name,
that it should return true whenever the associated lyrics context is in the  
middle of
a melisma. Since single underscores extend the melisma ("You can define  
melismata
entirely in the lyrics, by entering _ for every extra note that has to be  
added to
the melisma." --LNR 2.1.3), the fix would therefore be to alter the  
behavior of the
melisma_busy function.

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