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Re: error with #(make-music 'Music)

From: Eluze
Subject: Re: error with #(make-music 'Music)
Date: Fri, 2 Aug 2013 14:44:23 -0700 (PDT)

David Kastrup wrote
> This is totally confused.  It defines bracketOpenSymbol as a vector
> consisting of the symbol make-music and the list (quote Music).  But it
> puts these definitions in a list where they don't make sense.  This is a
> totally confused mixture of Scheme and LilyPond code.  Not using #(...)
> inside of Scheme instead of the probably desired (...) would already
> help, but the rest looks pretty much equally awkward.  I am surprised
> that it is supposed to do anything, actually.

the aim of this French user is to render the same music once with manual
beaming only and once with auto-beaming or without any beaming.

I proposed to redefine the 2 square brackets to another function (inspired
by the example pipeSymbol in NR). not knowing how to define empty music I
gave the example

bracketOpenSymbol = #(make-music 'LaissezVibrerEvent)

and in the affected context I removed the corresponding engraver - which
works perfectly but eliminates the possibility to use laisser vibrer.

what's the correct way to associate empty music - I guess that's what's
needed here - to these variables?

thanks for any improvements on the code or new approaches

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