Re: [Lilypond-auto] Issue 3761 in lilypond: LeftEdge no longer takes up space

[lilypond]

Comment #8 on issue 3761 by address@hidden: LeftEdge no longer takes  
up space
http://code.google.com/p/lilypond/issues/detail?id=3761

Sorry to chime in late.

I am wary of giving extents to unseen unless they are implementing the axis  
group interface (like note columns) or are stubs (like SpanBarStub).   
Furthermore, the extent '(0 . 0) is arbitrary and things could slide over  
or under that depending on where they are on the page.  Why not, for  
example, '(1 . 1)?

The solution I always use in cases like this, which I'd like to see be the  
norm, is the creation of "stub" grobs.  Thinking of it in terms of  
classical engraving, stubs are objects we put on the plates to keep other  
objects flush but that we don't put ink on, so they leave no trace on the  
printed score.  Stubs should take their heights from the neighboring grobs  
they're blocking, which is the point of the pure-from-neighbor-engraver.

This is conceptually similar to  
https://code.google.com/p/lilypond/issues/detail?id=910.

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