Re: [Lilypond-auto] Issue 3962 in lilypond: Patch: use X-parents to align MMRNumbers, MMRTexts and PercentRepeatCounters

[lilypond]

Updates:
        Cc: address@hidden

Comment #7 on issue 3962 by address@hidden: Patch: use X-parents to align  
MMRNumbers, MMRTexts and PercentRepeatCounters
http://code.google.com/p/lilypond/issues/detail?id=3962

Well, it is a bit late to comment after this has been pushed.  I feel  
uncertainty about "It makes more sense to use X-parents than Y-parents for  
horizontal alignment.".

The basic uncertainty boils down to the question: "what are the legitimate  
use cases for X-parent and Y-parent pointing to different items".  I don't  
know the answer to that off-hand.  If the answer is "none", then we could  
make do with just a single XY-parent, making it unnecessary to think about  
that particular question in future.

If the answer is different from "none", then looking at those use cases  
would tell us how to evaluate the "it makes more sense to use X-parents  
than Y-parents" statement which I currently don't feel qualified to judge.

Anybody have any insights or knowledge here?

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