Re: Bad \partcombine Output: Example

[Graham Percival]

Fair enough.  I've added it as
http://code.google.com/p/lilypond/issues/detail?id=385

But don't hold your breath waiting for a fix; it will probably be a 
while before anybody as the time/energy to try to clean up grace notes 
and partcombine issues.

Cheers,
- Graham


Will Oram wrote:
> I had thought about it being the same bug before mentioning it, and it 
> might be, but I don't see many similarities. Grace notes in lilypond 
> produce so many quirks that it's a decision between one big 'Grace notes 
> break everything around it' in the tracker, or several individual ones.
>
> A smaller example:
>
>
> \include "english.ly"
>
> mIFluteI = \relative c''' {
>     \clef "treble"
>     b1 \bar "" \grace { c16[( d]) } \bar "|"
>     e2 e
> }
> mIFluteII = \relative c'' {
>     \clef "treble"
>     b1 \bar "" \grace { c16[( d]) } \bar "|"
>     e4 e e r
> }
>
>
> \score {
>        \new Staff <<
>         \partcombine
>             \mIFluteI
>             \mIFluteII
>     >>
>
> \layout {
> }
> }
>
> On Jun 17, 2007, at 3.08 PM, Graham Percival wrote:
>
> > Hi Will,
> >
> > If you create a _minimal_ example I'll add it to the bug tracker, but I
> > suspect that the answer will be that this is a duplicate of
> > http://code.google.com/p/lilypond/issues/detail?id=34
> >
> > Sorry,
> > - Graham
> >
> > Will Oram wrote:
> > > Earlier (see 
> > > http://lists.gnu.org/archive/html/bug-lilypond/2007-06/msg00046.html), 
> > > I described very ugly output when using partcombine in lilypond 
> > > .11.21 to the current day. Parts took no heed of each other and 
> > > proceeded to overlap and create a trainwreck.
> > > After a LOT of ripping apart code, I've come up with a reason and an 
> > > example.
> > > REASON: Grace notes! When grace notes occupy the same space, it 
> > > causes a partcombine meltdown.
> > > Try this. In reading the output, note measure two: a quarter and 
> > > dotted half occupy the same beam, and slurring looks plain wrong.
> > > \include "english.ly"
> > > partA = \relative c''' {
> > >     \clef "treble"
> > >     c2 d\trill \bar "" \grace { c16[( d]) } \bar "|"
> > >         cflat2.( c4)
> > >     dflat2 r
> > > }
> > > partB = \relative c'' {
> > >     \clef "treble"
> > >     c d2_\trill \bar "" \grace { c16[( d]) } \bar "|"
> > >         eflat4( f8 gflat aflat4 gflat)
> > >     f2 r
> > > }
> > > \score {
> > >        \new Staff <<
> > >         \partcombine
> > >             \partA
> > >             \partB
> > >     >>
> > > \layout {
> > > }
> > > }
> > > learn from Crunchy
> > > ----------------------------------------------------------
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