Re: For those who need new features and bug fixes...

[Reinhold Kainhofer]

On 2012-12-21 13:33, David Kastrup wrote:
> In contrast, grace notes in typesetting are usually _not_ aligned.

Grace notes in one voice may even overlap previous moments of other 
instruments (See Gould, first image p.128): "This facilitates 
score-reading, as it prevents distorted note-spacing of a single 
beat"(Gould).

> An appoggiatura comes _on_ the beat, with the main note following it
> without additional spacing, acciaccature come _before_ the beat.  We
> should really only have one NoteColumn per _main_ time (and not on grace
> times), and in the case of appoggiature, it should align on the
> appoggiatura itself, whereas for normal grace notes and acciaccature, it
> should align on the main note.

Gould: "Grace notes are placed before the position of the beat 
regardless of whether they are prerformed on or before the beat."


>  In either case, grace notes and main
> notes should be next to each other without doing _any_ NoteColumn kind
> of alignment for vertically aligning material within the grace timing.
> Visual grace alignment is really a thing that should be per-voice.  It
> may be nice to have a "Grace_alignment_engraver" which you can call in
> at higher level such as Staff optionally (to synchronize graces for
> potentially multi-voice instruments).  But by default I don't think they
> should be aligned.

Gould: "When there are two parts on one stave, align the grace notes of 
the two parts.
[image]
When two parts with grace notes are on separate staves, it may be more 
helpful visually to close up grace notes to the following measured 
value, regardless of vertical alignment)."

Cheers,
Reinhold

--
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Reinhold Kainhofer, address@hidden, http://www.kainhofer.com
 * Financial & Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * Edition Kainhofer, Music Publisher, http://www.edition-kainhofer.com