[NTG-context] setupinteraction and macroexpansion

Andreas Schneider aksdb at gmx.de
Tue Jun 19 10:59:34 CEST 2012


On Tuesday, June 19, 2012, at 10:42 Wolfgang Schuster wrote:

> 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

Hmm  I  see, so \date is simply not possible for that case. Ok, thanks
for  explaining  that  I wasn't aware (until now) that commands can be
unexpandable.

Thanks again! :-)

-- 
Best Regards,
Andreas
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