Hi list,
I'm working on a music function/engraver combination. The music function
has to attach information to a grob to pass it on to the engraver.
I found that an alist is the appropriate data type for the information,
so I need a way to attach an alist to a grob in a music function. I made
it to work smoothly, but I'm quite positive that hijacking the 'details
property for that purpose is completely inacceptable.
One problem is that the function doesn't necessarily take a ly:music?
argument but can also work on the grob name and issue a \once \override
command, so I don't see a chance to get hold of the grob and at least
append my alist to 'details (which I suppose wouldn't hurt LilyPond).
So does anyone have an idea how I can attach an alist to a grob so that
an engraver can retrieve it?
Is it for example possible to add an arbitrary property to a grob?
TIA
Urs
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