this is great !! And I was not a little but a big blockhead.;)
Hah, no... I'm just a fresh pair of eyes :) Speaking of which, looking with fresh eyes at the file I just attached, I really should have condensed that list of nearly identical offset calculations. (See attached for the way I came up with.)
> The results look fine to me, except for the arpeggio of course. I don't
> know what the problem is here.
The arpeggio seems to belong to the NoteColumn (with "2.15.x"),
although the IR speaks only about Stems and NoteHeads . This means
that a chord with an arpeggio has a bigger extent (and length) and is
selected when passing the condition of dir-correction as being greater
than one-note-head-length.
It's of course possible to change the condition, but I'm not sure,
perhaps it's a bug. Did you notice
http://old.nabble.com/bug-or-feature-with-the-extent-of-NoteColumn-with-%222.15.20%22---td32935365.html
where I ask about it (so far without answer)?
Yes, I saw your thread and I'd be interested in hearing the answer too. I just tried the file with 2.14.2, and the arpeggio works perfectly there.
Many, many thanks!!
You're quite welcome!
-David
center-note-column-11.ly