unnatural tranpositions

[Werner LEMBERG]

Consider a trumpet 1 in B flat (\tri), quoting trumpet 2 in B flat
(\trii).  Both voices are entered normally (that is, in C).  To make
this work, I have to say

  in trumpet1.ly:

     \addquote "trii \trii
     \transpose bes c' \tri

  in \tri:

     ...
     \quote "trii" ...
     ...

  in \trii:

     \transposition d'
     ...

It is the last command which worries me.  The d' looks very unnatural:
I fear that in more complex situations enharmonic problems can arise
due to the doubled transposition: Consider a horn in E...
Additionally, I'm not sure whether it sounds correctly if converted to
MIDI.

Maybe the logic how \transposition and \transpose interact should be
changed.  Assuming that it should be

  \transpose bes c'

and

  \transposition bes

I suggest that the difference between \transpose and \transposition is
applied to material used in \quote, then the quote is transposed.  In
the example, both trumpet 1 and trumpet 2 are in B flat, so the
difference is zero, thus the notes in \quote are simply transposed as
is everything else in the trumpet voice.


    Werner