I am trying to change the size of all grace notes within a staff (or within the score, both would work) while engraving with Lilypond. The documentation on the grace engraver is not the most explanatory x__x I know how to change the size of one grace note, but I'm engraving a score with like, tens and tens, so, not looking forward to do it by hand. Plus, if I suddenly decide to change the size to something else, it won't be very agreeable.
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I'm not familiar with Lilypond, but is there a macro facility? In other words can you define a macro, X = a,b,c, etc., such that every time it comes across #X it replaces it with "a,b,c"? If so then you need to macroize from the start.– Brian TowersCommented Jun 20, 2020 at 11:29
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@BrianTowers Lilypond is LISP-based. The entire language is a macro facility.– chrylis -cautiouslyoptimistic-Commented Jun 21, 2020 at 0:50
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2 Answers
You can define global defaults for grace notes with startGraceMusic and stopGraceMusic. The following code:
startGraceMusic = {
<>(
\override NoteHead.font-size = #3
}
stopGraceMusic = {
\revert NoteHead.font-size
<>)
}
\new Staff {
\relative c'' {
\grace { b16 } c4
\grace { b16 } c4
\grace { b16 } c4
\grace { b16 } c4
}
}
produces extremely large notes (but I've included it here to see the effect); you probably want #-3 or something.
answered Jun 20, 2020 at 12:22
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Actually, I ran into a problem after I accepted that answer. I'm not actually using grace notes (
\grace), but rather\slashedGrace(because they are barred and are not slurred). So I just wrotestartSlashedGraceMusicandstopSlashedGraceMusicinstead ofstartGraceMusicandstopGraceMusic. But now, my\slashedGracenotes are not longer barred, and they are slurred. Any idea how I revert to "normal" behavior (minus note head size) ? Commented Jun 20, 2020 at 17:01 -
Perhaps add
\override Flag.stroke-style = #"grace"(and a corresponding\revert)? You can keep using\gracethen. Commented Jun 20, 2020 at 17:05 -
Thanks, it work (for the slash). Do you know off the top of your head, the
overridefor the slur (to remove it) ? Commented Jun 20, 2020 at 17:12 -
I see here a sample using
\slurDashedand\slurSolid, but I have no idea if there's something like\slurInvisible. Commented Jun 20, 2020 at 17:19 -
\slurInvisibledoesn't work, but the doc says that the global defaults are defined inly/grace-init.lyso I gave it a try (to no avail). In that file, it seems that<>\stopGraceSlurand<>\startGraceSlurare used; defined asstartGraceSlur = #(make-music 'SlurEvent 'span-direction START 'spanner-id 'grace)andstopGraceSlur = #(make-music 'SlurEvent 'span-direction STOP 'spanner-id 'grace); but I couldn't make anything of it. It's okay, though. I'll stick with the default size of slashed grace notes (if nothing else). Thanks for your time ! Commented Jun 20, 2020 at 17:46
Glorfindel's answer was very helpful. I also had the same problem with \slashedGrace though, in that I don't want the slur signs. I was able to solve that problem by altering the syntax slightly, getting rid of <>, resulting in
startSlashedGraceMusic = {
\override NoteHead.font-size = #-6
\override Flag.stroke-style = "grace"
}
stopSlashedGraceMusic = {
\revert NoteHead.font-size
}
