Re: Bug or feature? Strange counter behaviour in macro

[Carsten Fechtmann <fecht@zarm-technik.de>]

Hi Aditya,

yes, looking at the .tuo did the trick. :-D

I had tried things with expanded already, but at that time I still had
> {\expanded{\Issue[\IssueCounter]{Issue~\IssueCounter:}{\currentdate}}}
as command. Which does NOT work (due to the tilde ~ resulting in an  
error message then)
The rest was actually fine. Now, without it (i.e. "~") it works!
...
{\expanded{\Issue[\IssueCounter]{Issue: \IssueCounter:}{\currentdate}}}
...

Thanks a lot, that had me seriously baffled ;-)
Carsten

On 12.01.2008 at 23:29 wrote Aditya Mahajan:

> Hi Carsten,
>
> On Sat, 12 Jan 2008, Carsten Fechtmann wrote:
>
>> What this all burns down is, that I /really/ would like to  
>> understand,
>> how I can pass a value from a counter as (constant) argument to a  
>> self-
>> defined function. As that seems to be the core of the matter/problem
>> here.
>
> You need to understand how synonyms work. It writes enteries to the  
> tuo
> file, and then uses that in the second pass to sort things. One way to
> make sure that you have the correct entry in the tuo file is to use
> expanded:
>
> \definesynonyms[Issue][issues][\IssueText][\IssueDate]
> \setupsynonyms[Issue][criterium=all]
>
> \newcounter\IssueCounter
>
> \def\NewIssue{\dosingleargument\doNewIssue}
>
> \def\doNewIssue[#1]%
>   {\increment\IssueCounter
>     %Debug: \IssueCounter / \getnumber[IssueNumber]%
>     \doifelsenothing{#1}
>       {\expanded{\Issue[\IssueCounter]{\IssueCounter}{\currentdate}}}
>       {\expanded{\Issue[\IssueCounter]{\IssueCounter}{#1}}}}
>
> % Compare the tuo file with and without expanded and you will know  
> what is
> % happening.
>
> \starttext
> \NewIssue[January 9, 2008]
> \NewIssue[January 10, 2008]
> \NewIssue                       % January 11, 2008
>
> List of issue \# and dates:
>
> \placelistofissues \blank
>
> \IssueDate{\IssueCounter} % produces correct result in either case
>
> \stoptext
>
> Aditya
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