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Subject:
From:
Stephan Hennig <[log in to unmask]>
Reply To:
Mailing list for the LaTeX3 project <[log in to unmask]>
Date:
Tue, 14 Jun 2011 23:48:26 +0200
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schrieb Joseph Wright:
> On 14/06/2011 22:00, Stephan Hennig wrote:
>> 
>> Is that expected behaviour?  Would it be possible to make
>> \NewDocumentCommand macros work with hyperref bookmarks?  I'd prefer
>> using \NewDocumentCommand macros because of the mandatory argument of
>> \DeclareExpandableDocumentCommand macros which I don't need in my context.
> 
> That is not trivial in general because you need to know what definition
> to use in an expansion context (arguments or not). That can only really
> be done by a programmer, not an automated system. For example, in
> siunitx I do provide appropriate 'shortcut' definitions and hook them
> into hyperref using \pdfstringdefDisableCommands. Doing that means
> making some pretty careful judgements on what should happen in
> bookmarks: many things simply do not make sense there.

OK, thanks!  I'll have a look at how \pdfstringdefDisableCommands can
help me.  I have already used \texorpdfstring, but having to maintain
two arguments is no fun.


> In the case case you mention, I'm not sure why you have used
> 
>   \DeclareExpandableDocumentCommand{\foob}{m}{FooB}
> 
> rather than
> 
>   \DeclareExpandableDocumentCommand{\foob}{}{FooB}
> 
> which works fine.

Well, because of this item from xparse documentation (sec. 1.7):

> * The function must have at least one mandatory argument, and in 
> particular the last argument must be one of the mandatory types (l, m
> or u).

Do I miss something?

Best regards,
Stephan Hennig

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