Re: Calling functions defined in a .scm file in a .ly file

[Nicolas Sceaux]

Le 30 août 09 à 14:44, Reinhold Kainhofer a écrit :

> I'm struggling with how to access a function that is define- 
> public'ed in an scm
> file. In particular, the file define-music-display-methods.scm  
> defines the
> note-name->lily-string function to return a human-readable  
> representation of
> the given pitch. Now, I want to call that from a custom function  
> that I'm
> definin in my own .ly file. How can I call that note-name->lily- 
> string function?
>
> That function does not seem to be available by default (judging from  
> the code,
> it is in the display-lily module...).
>
> I tried inserting
>  #(use-module (scm display-lily))
> in my .ly file, but that didn't work at all.

The note-name->lily-string function is not public in (scm display-lily)
module. Export the symbol, and you will be able to call the function
from your .ly file after the #(use-modules (scm display-lily))


> Using
>  #(ly:load "define-music-display-methods.scm")
> makes note-name->lily-string available, but then $defaultlayout can  
> no longer
> be found?!?

When you load that file, you change the current module in your
.ly file, that's why $defaultlayout cannot be found: it is not
bound in the (scm display-lily) module.

Nicolas