Re: Reading global variables from Scheme [documentation request?]

[David Kastrup]

Jérôme Plût <address@hidden> writes:

> I would like to *read*, from within a Scheme function
> (define-music-function), the values of variables such as
> Score.currentBarNumber or Score.alternativeNumberingStyle.
>
> I can have a guess that this is possible with such functions as
> ly:context-property or ly:output-def-lookup, but the documentation of
> these functions is quite terse.
>
> How is it possible to access these values?

Not at all since they don't exist at the time a music function is
interpreted.  Depending on what you actually want to do, you might
install callbacks that kick in at a time where those values exist.

How this is done depends on just what you want to see done when.

-- 
David Kastrup