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Macro pre-processing?


From: Geoff Horton
Subject: Macro pre-processing?
Date: Thu, 6 Apr 2006 11:57:44 -0400

I guess I should start by explaining what I want to do. I have a lot
of notes in chords whose noteheads need to be individually \tweak-ed
to be smaller. Always on the lookout to reduce typing (and thus
typos), I tried:

organ = { \tweak "'font-size #-2 }

But LilyPond wants an argument right then and there. I strongly
suspect I could do a Scheme macro if I knew enough about Scheme and
LilyPond internals, but that seems overkill when all I really want is
the equivalent of a C compilers macro expansion capability.

I could write such a utility easily enough in Perl, and I suspect it's
simple enough that I could learn enough Python to write it without too
much trouble (thereby not introducing a fourth language into the mix),
but I'm wondering if there already exists a simple way to do text
substitutions that I don't know about. (I'd also like to use this for
a more general conditional interpretation facility than the tags
supply.)

Geoff




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