Re: [Lilypond-auto] Issue 4387 in lilypond: Patch: Let \relative work on \transpose content as if it were untransposed

[lilypond]

Comment #4 on issue 4387 by address@hidden: Patch: Let \relative work  
on \transpose content as if it were untransposed
https://code.google.com/p/lilypond/issues/detail?id=4387

In a search for combinations of \relative and \transpose   
https://www.google.com/search?q=site:mutopiaproject.org+relative+transpose
I find that often \transpose applied is to the whole part, which causes no  
confusion.  There are also uses of \transpose of a short segment, a motif  
that recurs at different pitches, within a long sequence of music within a  
\relative.  These cases usually use \relative around the motif.

Probably it would be less surprising if the melody stayed the same shape in  
the straight and transposed quotations
  motif = { c4 e g c b a g a }
  \relative c' { \motif \transpose c g' \motif }
But, I find it quite difficult to predict what octave mark I need in  
\transpose c g, \motif to get a continuous melody if we "let \relative work  
on \transpose ..."

Existing code depends on the old (quirky) behavior, so to preserve those  
scores convert-ly to \absolute\transpose seems appropriate.

The only purpose I know of \displayLilyMusic is to show the *output* of  
\transpose, and it is useful for that.
https://lists.gnu.org/archive/html/lilypond-devel/2005-07/msg00194.html

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