Comment #4 on issue 4387 by [email protected]: 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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