Re: Function operating on header

[Noeck]

> Does this solve your problem?
> …
>   copyright = \markup \concat { "© " \fromproperty #'header:author }

Thank you, Timothy,

this is how far I got already. It is probably a step in the right
direction. But there are two issues with it:

1) I would like to use some Scheme code on the fields (with if etc),
   so I need the 'header:author as a string and #(markup->string …)
   did not work.
2) Can this be put in a command which I can move to a separate file?
   Like \evaluateHeaders

Cheers,
Joram