Re: [NTG-context] def with if..else fails in TABLE

18 Oct 2005


      Peter Rolf wrote:
...
Henning Hraban Ramm wrote:
...
Am 2005-10-18 um 10:23 schrieb Peter Rolf:
...
...
I tried to write a macro for a TABLE line:
\def\TestCmd{\dodoubleempty\doTestCmd}
\def\doTestCmd[#1][#2]#3{\bTR\bTD #3
   \iffirstargument\hfill (#1)\fi
   \eTD \bTD
   \ifsecondargument
       3: #2 and #3
   \else
       2: only #3
   \fi
   \eTD\eTR
}
But it never goes into "else" (if #2 is empty, I get "3: and #3")!
And it's only with the table commands around.
Why? What can I do?
the numbering is not bound to the parameter number; it's just a  counter.
calling the macro with two arguments ->
 \iffirstargument  is true
 \ifsecondargument is true
 \ifthirdargument  is false
But why *does it work* without the TABLE commands??
If it would be true (or at least the reason for my problem) what you 
wrote, the following should work:
\def\TestCmd{\dodoubleempty\doTestCmd}
\def\doTestCmd[#1][#2]#3{\bTR\bTD #3
   \ifsecondargument
       \iffirstargument\hfill (#1)\fi
       \eTD \bTD
       3(#1.#2.#3)
   \else
       \iffirstargument\hfill (#1)\fi
       \eTD \bTD
       2(#1/#2/#3)
   \fi
   \eTD\eTR
}
But there I get only a
! Incomplete \iftrue; all text was ignored after line 63.
<inserted text>
               \fi
The problem is, that the analysis of the \if?argument is not working
here. You always get three arguments inside the TABLE.
I did not test but my opinion is:

- \if*argument is set in the \do*empty

- \bTR, \eTR has optional params so they also use \do*empty

- using test \if*argument AFTER \bTR, \bTD, ... is related to the \bTR, 
... number of arguments not to the \TestCmd.

vit
...
The following example shows this in the first three rows. If you use
\doifelsenothing{TEST}
  {NOTHING part}
  {SOMETHING part}%
it works (last three rows). Dunno why ;)
Greetings,
Peter
-----
% interface=en output=pdftex
% Time-stamp: 
%
\def\TestCmd{\dodoubleempty\doTestCmd}
\def\doTestCmd[#1][#2]#3{\bTR\bTD #3%
  \ifsecondargument
    \hfill (#1) 3: #2 and #3
  \else
    \iffirstargument
      \hfill (#1) 2: #3
    \else
      1: #3
    \fi
  \fi
  \eTD\eTR
}
\def\TestCmdA{\dodoubleempty\doTestCmdA}
\def\doTestCmdA[#1][#2]#3{\bTR\bTD #3%
  \doifelsenothing{#2}
    {\doifelsenothing{#1}
      {1: #3}
      {\hfill (#1) 2: #3}%
    }
    {\doifelsenothing{#1}
      {2: #2 and #3}
      {\hfill (#1) 3: #2 and #3}%
    }%
  \eTD\eTR
}
\starttext
\bTABLE
\TestCmd{C}
\TestCmd[A]{C}
\TestCmd[A][B]{C}
\TestCmdA{Z}
\TestCmdA[Y]{Z}
\TestCmdA[X][Y]{Z}
\eTABLE
\stoptext
%%% Local Variables:
%%% mode: context
%%% TeX-master: ""
%%% End:
-----
...
Grüßlis vom Hraban!
---
http://www.fiee.net/texnique/
http://contextgarden.net
http://www.cacert.org (I'm an assurer)
_______________________________________________
ntg-context mailing list
ntg-context@ntg.nl
http://www.ntg.nl/mailman/listinfo/ntg-context
_______________________________________________
ntg-context mailing list
ntg-context@ntg.nl
http://www.ntg.nl/mailman/listinfo/ntg-context
-- 
=======================================================
Ing. Vít Zýka, Ph.D.                         TYPOkvítek

database publishing              databazove publikovani
data maintaining and typesetting in typographic quality
priprava dat a jejich sazba v typograficke kvalite

tel.: (+420) 777 198 189     www: http://typokvitek.com
=======================================================

Re: [NTG-context] def with if..else fails in TABLE

Vit Zyka