Jonathan Kulp wrote Monday, August 11, 2008 11:19 PM
1. The "add-grace-property" example currently appearing in NR does not
work anymore. --#(add-grace-property 'Voice 'Stem 'direction '()) It
needs to be removed or changed
Correct. Have you investigated whether other properties can
be changed in this way? For example, try this:
#(add-grace-property 'Voice 'NoteHead 'color #'red)
(Note that the #' are required here, as the value for color must be a list)
2. The way to accomplish the same thing is to use the new
remove-grace-property or Neil's ly:stem::calc-direction instead of '()
as the direction argument. I got Neil's solution to work but haven't
grabbed the new file from git to try Carl's. Will do that tonight.
I think the remove-grace-property function is best, but perhaps you
should check it works correctly. For example, try stacking a few
properties and clearing one or two of them in the middle.
So, the question is whether it's worth introducing add-grace-property
and/or remove-grace-property at that point in NR, since it already shows
how to alter stem direction using \stemDown in a different example right
before it.
The previous example shows how to change a single grace note.
Because this has to be placed within the \grace expression it must
be repeated every time. The key thing about add-grace-property
is that it applies to -all- grace notes which follow.
Is it sufficiently abnormal that it should belong to a
snippet instead of appearing in the main text? Should I create an
example that works and then move it to the @snippets area? This
question is probably for Carl :)
I don't feel strongly about this. A snippet would be fine, perhaps
containing a few different settings to show its generality, and to
demonstrate how it affects all grace notes. It also need to show
how remove-grace-property works.
Jon
Trevor
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