Re: grace notes break preceding ties in MIDI

[Adam Spiers]

Sorry, I should have moved this thread to lilypond-devel; I'll repost
there ...

On Sat, Jan 12, 2013 at 12:08:21PM +0000, Adam Spiers wrote:
> On Tue, Jan 8, 2013 at 5:59 PM, Adam Spiers
> <address@hidden> wrote:
> > On Tue, Jan 8, 2013 at 5:41 PM, Eluze <address@hidden> wrote:
> >> I've added an issue to the tracker:
> >> https://code.google.com/p/lilypond/issues/detail?id=3091&thanks=3091&ts=1357666391
> >
> > Thanks!
> >
> >> I'm not aware of a workaround - I could imagine using 2 voices, one without
> >> the grace the other with just the grace and a muted note - but this seems
> >> pretty awkward!
> >
> > Is it perhaps the fault of the
> >
> >     if (now_mom ().grace_part_)
> >
> > section in Note_performer::process_music() in lily/note-performer.cc?
> > Does it somehow reintroduce the previous note when shortening it to
> > make room for the grace note, even though the previous note was tied
> > to the one before?
> 
> Is there a performer tutorial similar to the engraver tutorial?
> 
> http://lilypond.org/doc/v2.16/Documentation/contributor/engraver-tutorial
> 
> I've started trying to fix the above bug, but my knowledge of
> LilyPond's C++ performer code (let alone any other code) is poor, and
> getting to grips with the various data structures is slow work.  I'm
> running it through gdb which helps, but any other pointers would be
> really useful.  Thanks!
> 
> Adam