partcombine bug

[Simon Bailey]

hi,

i'm using lilypond-1.5.58, and am slowly working on arranging a piece
for brass and wind orchestra. 

in the attached ly file, up until bar 25, the two tenorhorns are playing
more or less the same melody, it just deviates in a few bars, where the
2nd horn drops below the 1st (bars 7 - 10, 17-18 & 25-26). the melody
has a quarter followed by two eigths. in the aforementioned bars,
lilypond does not combine the eigths as one would expect, but prints
both sets, thus making it look like two sixteenth chords...

another thing, both voices have staccato and tenuto marks on them (in
this first section). lily prints both sets of markings. is this
intentional, is there a workaround? has this already been corrected in
the latest release?

it's not desperate at the moment - it will be a while until i'm ready to
create the full score.

thanks for any help,
simon.
-- 
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