Re: [Lilypond-auto] Issue 3884 in lilypond: Patch: Add on-page-greater-than, -less-than (on-the-fly)

[lilypond]

Comment #5 on issue 3884 by address@hidden: Patch: Add  
on-page-greater-than, -less-than (on-the-fly)
http://code.google.com/p/lilypond/issues/detail?id=3884

Thanks for the cc on comment #4.  I hadn't seen comment #2 before.  I've  
just starred the issue so I'm on board now.

Reworking the design instead sounds like it might be a good idea, although  
I haven't really thought it through.  One idea would be to just pass the  
operator as an argument.  So one could write:

  (on-page = 1)
  (on-page > 1)
  (on-page < 8)

That would cover those three cases without adding to the list of ready-made  
procedures.  Then, if we wanted to trim down the list, we could  
remove "first-page" and "not-first-page" since those can be achieved with  
(on-page = 1) and (on-page > 1).

Replacing "last-page" is trickier, but maybe there's a way to let the user  
supply it as an argument (instead of a page number), so that one could  
write something like the following (which could replace "last-page"  
and "not-last-page"):

  (on-page = last-page)
  (on-page < last-page)

Although, you're thinking of something more comprehensive.  However, I  
think it's already possible to use a procedure written in scheme here (i.e.  
directly).  The procedures in that list are just some "ready-made"  
shortcuts.  (The docs could probably make this more explicit.)  So I think  
we already have what you're thinking of, unless I'm missing something?



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