Comment #4 on issue 4196 by [email protected]: Patch: Add
\numbered-time-signature markup command
https://code.google.com/p/lilypond/issues/detail?id=4196
I think I should post a review of all my C++-to-scheme work to give you
context. It won't be today, though, so I'll attempt to answer your
question briefly.
How about only making a \time-signature markup command? The style can
just be taken from the "style" property.
That would amount to (1) use style as a key to look up a markup procedure
and (2) call the procedure. This is what the time-signature print callback
does in my branch. What I have posted here is the inner procedure that is
called directly for the "numbered" style, wrapped in a very simple lambda
for the "single-digit" style, or called from a slightly more complicated
function for the "C" style when no glyph is found.
As I mentioned in the review, if you don't want to see
\numbered-time-signature as a documented markup command, I'll be happy to
convert it back to just a function that builds markup.
A generic \time-signature could be implemented if it were useful, but I
don't think it's actually that useful, and the interface required for
compound time signatures is an unnecessary complication for styles other
than numbered.
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