slanted trill span with alteration indications

[Reinhold Kainhofer]

I'm currently writing some example excerpts of Brahm's violino concert 
for the diploma thesis of a friend. There is one example that is really 
giving me headaches: measures 332-337 of the first movement. An example 
scan from an old edition is attached. As you can see, there is a slanted 
trill spanner with accidentals to indicate pitched trills.

The recent skyline improvements don't seem to have any effect on the 
slanted spanner, as all the accidentals are placed way too high up, as 
if the spanner wasn't rotated at all.

Attached is my current code hightlighting that problem. Any idea how I 
can have lilypond automatically place the accidentals and the tempo mark 
at the proper position?


The other problem is that so far I have to manually hardcode the 
rotation, which will break if I want to create two versions (one with 
ragged-right to insert into the text of the thesis, and one without 
ragged right for the appendix, where all music samples are listed). Any 
idea how to get the spanner automatically rotated?

Thanks,
Reinhold

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Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
 * Financial&  Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * LilyPond, Music typesetting, http://www.lilypond.org asd

Brahms_Violin_Movement1_measures333f.png
Description: PNG image

trillspan-slanted-accidentals.ly
Description: Text document

trillspan-slanted-accidentals.pdf
Description: Adobe PDF document