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Re: Note heads and grace

From: Mats Bengtsson
Subject: Re: Note heads and grace
Date: Mon, 10 Nov 2003 11:47:05 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031007

Actually, I do have an advanced guess on why it happens.
The \grace command sets some properties for the NoteHead
object within the current Voice context. Then, LilyPond
will make a local copy of the list of properties for the
NoteHead object within this specific Voice context. So, the
properties you set with \property Staff.NoteHead ... will
no more be visible to the current Voice context.

This intricate detail of how property settings work is probably
obvious to Han-Wen and Jan who wrote the code but I cannot find
it mentioned explicitly anywhere in the documentation and I was
not aware of it myself.


address@hidden wrote:
Why ?    :-)

Selon Mats Bengtsson <address@hidden>:

Don't ask me why, but if you replace Staff.NoteHead with Voice.NoteHead
in your example, it will work.

Also, I recommend to use \override ... \revert instead of explicitly
setting the value back to default:

\property Voice.NoteHead \override #'style = #'xcircle
c4 c c c
\property Voice.NoteHead \revert #'style
d4 d d d
\grace{d16 d}
d4 d d d
\property Voice.NoteHead \override #'style = #'xcircle
e4 e e e

See http://lilypond.org/doc/v2.0/Documentation/user/out-www/lilypond/Tuning-


for more details.

To do a setting for a single note head, use \once \property ...
You can define your own shorthand macro like
xcircle = \notes{ \once \property Voice.NoteHead \override #'style = #'xcircle }
and use it with
\xcircle c4


Marco Caliari wrote:

Hi all.

The following example

\property Staff.NoteHead \set #'style = #'xcircle
c4 c c c \property Staff.NoteHead \set #'style = #'default
d4 d d d
\grace{d16 d}
d4 d d d
\property Staff.NoteHead \set #'style = #'xcircle
e4 e e e

does not restore note heads to xcircle (lily 2.1.0). It works if you remove \grace{d16 d}. Is it possible to change a single note head with a command like




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