[NTG-context] setupinteraction and macroexpansion

[Wolfgang Schuster]

Am 19.06.2012 um 10:39 schrieb Andreas Schneider:

> Hello,
> 
> I'm  a bit lost with macro expansion here. I try to use some macros to
> set  the title (and subject) of the PDF document. The attached minimal
> example shows what I want to achieve.
> 
> I tried def, edef, gdef, define, explicit expand, expandoneafter, etc.
> etc.  without  any  success. Whatever I do, the title field in the PDF
> metadata  always  contains  the  raw "\date..." command instead of the
> formatted date.
> 
> Any suggestions?

You can’t use \date (or any other unexpandable command) in an expandable context.

Wolfgang