Hi Hraban, Hans, Taco,

I followed this thread with interest. By coincidence I was struggling 
with this kind of problem during the last days. Thanks so much for this 
educative example!
In my case I have to fill in a table with the information concerning 
parcels to be sent. Some times there is a single one sometimes there are 
multiple pieces. For each of the parcels I have to fill in a table-row. 
And voilà! The community cooked up the pieces I missed. Thanks again.

Willi

Henning Hraban Ramm wrote:

> (This mail was rejected as spam in my first try, and the reject  
> message was catched by my spam filter...)
>
> Am 2006-01-03 um 11:51 schrieb Taco Hoekwater:
>
>> You need to expand the \Set commands in that first loop,
>> otherwise you store the literal token \recursevelel inside
>> the definitions of the Key and Val macros (\setvalue{}{}
>> autoexpands its first argument, but not its second argument).
>>
>> When not inside a recursion, \recurselevel expands to the number
>> 0  (zero) in the "manual bit", and you are actually re-evaluating
>> the macro using the then current \recurselevel definition
>> when inside the  "looping" bit.
>
>
> The magic expansion hit me again, I should've known it.
>
>> So you need:
>>
>>   \dostepwiserecurse{1}{9}{1}{
>>     \expanded{\Set{\recurselevel}{K\recurselevel}{V\recurselevel}}
>>   }
>>
>> I hope this is clear enough?
>
>
> Thank you very much!
> Actually, in the real environment I needed the \expanded at another  
> place:
>
> \def\Sender#1#2#3{\setvalue{SenderKey#1}{#2}\setvalue{SenderVal#1}{#3}}
> \def\GetSenderLine#1{\bTR\bTD\doiftextelse{\getvalue{SenderKey#1}}     
> {\getvalue{SenderKey#1}:}{}\eTD\bTD\getvalue{SenderVal#1}\eTD\eTR}
> % initialize values (not even needed)
> \dostepwiserecurse{1}{9}{1}{
>     \Sender{\recurselevel}{}{}
> }
>
> \startsetups sendertablesetup
>     \setupTABLE[frame=off]
>     \setupTABLE[x][1][width=\senderkeywidth, align=left, 
> style={\keystyle \strut}]
>     \setupTABLE[x][2][width=\sendervalwidth, align=right, style= 
> {\valstyle\strut}]
>     \bTABLE
> \dostepwiserecurse{1}{9}{1}{% count from 1 to 9, step 1
>     \expanded{\GetSenderLine{\recurselevel}}
> }
>     \eTABLE
> \stopsetups
>
> I collect this (and more) at http://wiki.contextgarden.net/ 
> Talk:Letter_style
>
>
>
> Grüßlis vom Hraban!
> ---
> http://www.fiee.net/texnique/
> http://contextgarden.net
> http://www.cacert.org (I'm an assurer)
>
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