File: tableaux.sty

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%
% tableaux.sty  version 1.0
% Copyright (C) 2007  by Kasper Peeters
%
% A LaTeX style file for drawing Young diagrams and Young tableaux.
%
% This file is part of the Cadabra computer algebra system,
%
%   http://www.aei.mpg.de/~peekas/cadabra/
%
% but may be distributed /or modified under the conditions of the
% LaTeX Project Public License, either version 1.3 of this license or
% (at your option) any later version. The latest version of this
% license is in
%
%   http://www.latex-project.org/lppl.txt
%
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
% The current maintainer of this work is Kasper Peeters.
%

\def\@tabforc#1#2#3{\expandafter\tabf@rc\expandafter#1{#2 \^}{#3}}
\def\tabf@@rc#1#2#3\tabf@@rc#4{\def#1{#2}#4\tabf@rc#1{#3}{#4}}
\long\def\ReturnAfterFi#1\fi{\fi#1}
    \def\tabf@rc#1#2#3{%
      \def\temp@ty{#2}%
      \ifx\@empty\temp@ty
      \else
        \ReturnAfterFi{%
          \tabf@@rc#1#2\tabf@@rc{#3}%
        }%
      \fi
    }%

% Sorry, some global registers...
\newdimen\ytsize\ytsize=2mm
\newdimen\ytfsize\ytfsize=4mm
\newcount\repcnt
\newdimen\acchspace
\newdimen\accvspace
\newdimen\raiseh
\newdimen\maxw

\newcommand\phrule[1]{\hbox{\vbox to0pt{\hrule height .2pt width#1\vss}}}
%\newcommand\pvrule{\vbox{\hbox to0pt{\vrule width .2pt height\ytsize\hss}}}

\newcommand\ftableau[1]{%
\def\ctest{,}
\def\Ktest{\^}
\acchspace=0ex
\accvspace=0ex
\maxw=0ex
\vbox{\hbox{%
\@tabforc\thisel{#1}{%
 \ifx\thisel\Ktest{%
     \ifnum\maxw=0\maxw=\acchspace\fi%
     \raisebox{\accvspace}{\vbox to \ytfsize{\hbox to
		 0pt{\vrule height \ytfsize\hss}}}\kern\acchspace\kern-\maxw}
 \else\ifx\thisel\ctest
     \ifnum\maxw=0\maxw=\acchspace\fi%
     \raisebox{\accvspace}{\vbox to \ytfsize{\hbox to 0pt{\vrule height \ytfsize\hss}}}%
     \kern\acchspace\acchspace=0ex
	  \advance\accvspace by -\ytfsize
 \else
     \setbox3=\hbox{$\thisel$}%
	  \raiseh=\ytfsize%
	  \advance\raiseh by -1ex%
	  \divide\raiseh by 2%
     \advance\acchspace by-\ytfsize%
     \raisebox{\accvspace}{\vbox to \ytfsize{\hrule\hbox to%
        \ytfsize{\vrule height \ytfsize\hskip.5ex%
         \raisebox{\raiseh}{\tiny$\thisel$}\hss}\vss\phrule{\ytfsize}}}%
 \fi\fi}}}}

\newcommand\tableau[1]{%
\def\stest{ }
\def\Ktest{\^}
\acchspace=0ex
\accvspace=0ex
\maxw=0ex
\hbox{%
\@tabforc\thisel{#1}{%
 \ifx\thisel\Ktest{}
 \else
     \repcnt=\thisel%
     \loop{}%
     \advance\acchspace by-\ytsize%
     \raisebox{\accvspace}{\vbox to \ytsize{\hrule \hbox to%
			\ytsize{\vrule height \ytsize\hss}\vss\phrule{\ytsize}}}%
     \advance\repcnt by -1\ifnum\repcnt>1{}\repeat%
     \ifnum\maxw=0\maxw=\acchspace\fi%
     \raisebox{\accvspace}{\vbox to \ytsize{\hbox to 0pt{\vrule height \ytsize\hss}}}%
     \kern\acchspace\acchspace=0ex%
	  \advance\accvspace by -\ytsize%
 \fi}\kern-\maxw}}