In both:
Notation 5.6.1 "Substitution function syntax", and
Extending 2.1.2 "Simple substitution functions",
it says that variables inside the music block part of a
music-function definition should be referenced using the
hash-cash notation (#$), but this clearly doesn't work in
several significant cases:
\tempo \markup { \bold #$tempotext }
#$note
In fact, I did an experiment where I took every example from
these sections, removing the # from every #$, and all the
examples still compiled fine. Are there any cases where the
#$ is actually needed? Also, for cases where both #$ and $
work, is there any reason that omitting the # would be bad
practice or something? Any additional insights would be
appreciated too.
Thanks.
- Mark
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