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% \iffalse meta-comment
%
% Copyright (C) Johannes Fink
% -----------------------------------
%
% This file may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.2
% 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 1.2 or later is part of all distributions of LaTeX
% version 1999/12/01 or later.
%
% \fi
%
% \iffalse
%<package>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
%<package>\ProvidesPackage{tabularborder}
%<package> [2010/04/14 v1.0a Tabular without border]
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{tabularborder}

\EnableCrossrefs

\CodelineIndex

\RecordChanges

%\OnlyDescription

\begin{document}
\DocInput{tabularborder.dtx}
\end{document}
%</driver>
% \fi
%
% \CheckSum{162}
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%   Digits        \0\1\2\3\4\5\6\7\8\9
%   Exclamation   \!     Double quote  \"     Hash (number) \#
%   Dollar        \$     Percent       \%     Ampersand     \&
%   Acute accent  \'     Left paren    \(     Right paren   \)
%   Asterisk      \*     Plus          \+     Comma         \,
%   Minus         \-     Point         \.     Solidus       \/
%   Colon         \:     Semicolon     \;     Less than     \<
%   Equals        \=     Greater than  \>     Question mark \?
%   Commercial at \@     Left bracket  \[     Backslash     \\
%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}
%
%
% \changes{v1.0}{2010/04/03}{Initial version}
%
% \GetFileInfo{tabularborder.sty}
%
% \DoNotIndex{\#,\$,\%,\&,\@,\\,\{,\},\^,\_,\~,\ }
% \DoNotIndex{\@ne}
% \DoNotIndex{\advance,\begingroup,\catcode,\closein}
% \DoNotIndex{\closeout,\day,\def,\edef,\else,\empty,\endgroup}
% \DoNotIndex{\bgroup,\egroup,\newcommand}
% \DoNotIndex{\ifx,\fi}
% \DoNotIndex{\let}
%
% \title{The \textsf{tabularborder} package
% \thanks{This document corresponds to \textsf{tabularborder}~\fileversion,
% dated \filedate.}}
% \author{Johannes Fink\\
% \iffalse\texttt{fink@unileoben.ac.at}\fi
% }
%
% \maketitle
%
% \begin{abstract}
% This package changes the space for horizontal lines
% at the left side and the right side of a |tabular| (but  not |array|) to zero space.
%
% \end{abstract}
% \tableofcontents
% \section{Introduction}
% Usually, the |tabular| environment adds a space of |\tabcolsep| on the left side and on the right
% side of the text. For this reason a |\hline|, or a |\toprule|, etc. will exceed the text by
% the total length of 2 |\tabcolsep|.
% \tboff\vskip3ex
%
%     \begin{tabular}{llll}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
%
% \begin{verbatim}
%     \begin{tabular}{llll}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
% \end{verbatim}
%
%
% If some publishers, or authors, respectively, do
% not like these additional length of the horizontal lines, the |tabular| must be reformatted.
%
% \vskip3ex
%
%     \begin{tabular}{@{}llll@{}}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{@{}l}{multicol 1-2}
%     & \multicolumn{2}{l@{}}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
%
% \begin{verbatim}
%     \begin{tabular}{@{}llll@{}}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{@{}l}{multicol 1-2}
%     & \multicolumn{2}{l@{}}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
% \end{verbatim}
%
% Formatting is done with |@{}|, as shown above. Note that the |\multicolumn| commands must
% be formatted separately.
% In a longer project, such as a thesis or book,
% this reformatting may be a time consuming and a tedious task.
% In particular, if the supervisor of a thesis work changes his opinion about the layout several times
% in the course of correcting.
%
% This package changes the leading and trailing spaces automatically into zero without the need of inserting the |@{}|.
% \tbon\vskip3ex
% \begin{center}
%     \begin{tabular}{llll}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
% \end{center}
%
%
% Of course, with such an arrangement, outer
% vertical lines do not make sense,
% and actually, they are displaced if tried anyway.
% By the way, we are using here the package |booktabs|.
%
%
%
% \section{Usage}
%
% Here are some examples:
% \subsection{Basic Example}
% \begin{center}
%     \begin{tabular}{llll}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
% \end{center}
% %
% Source code:
% \begin{verbatim}
%     \begin{tabular}{llll}
%     \toprule
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \bottomrule
%     \end{tabular}
% \end{verbatim}
%
% \subsection{Odd Example}
% Vertical lines look odd here:
%
% \begin{center}
%     \begin{tabular}{|ll|ll|}
%     \hline
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \hline
%     \end{tabular}
% \end{center}
% %
% Source code:
% \begin{verbatim}
%     \begin{tabular}{|ll|ll|}
%     \hline
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{l}{multicol 1-2}
%     & \multicolumn{2}{l}{multicol 3-4}\\
%     \hline
%     \end{tabular}
% \end{verbatim}
%
% \subsection{Improved Example}
% But we may switch off the |tabularborder| package with |\tboff|.
% \tboff
% \begin{center}
%     \begin{tabular}{|ll|ll|}
%     \hline
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{|l|}{multicol 1-2}
%     & \multicolumn{2}{l|}{multicol 3-4}\\
%     \hline
%     \end{tabular}
% \end{center}
% %
% Source code:
% \begin{verbatim}
%     \begin{tabular}{|ll|ll|}
%     \hline
%     col 1 & col 2 & col 3 & col4\\
%     \multicolumn{2}{|l|}{multicol 1-2}
%     & \multicolumn{2}{l|}{multicol 3-4}\\
%     \hline
%     \end{tabular}
% \end{verbatim}
% But we had still to manipulate the |\multicolumn| command.
% And now switch on again with |\tbon|. \tbon
% \subsection{Sophisticated Example}
%
% %
% \begin{center}
%     \begin{tabular}{>{\sf}l|r@{}l}
%     \toprule
%     Article & \multicolumn{2}{c}{Price/[USD]} \\
%     \midrule
%     Beer      & \hskip4ex 3&.40\\
%     Whisky    &           8&.20 \\
%     \bottomrule
%     \end{tabular}
% \end{center}
%
% Source code:
% \begin{verbatim}
%     \begin{tabular}{>{\sf}l|r@{}l}
%     \toprule
%     Article & \multicolumn{2}{c}{Price/[USD]} \\
%     \midrule
%     Beer      & \hskip4ex 3&.40\\
%     Whisky    &           8&.20 \\
%     \bottomrule
%     \end{tabular}
% \end{verbatim}
%
%
% \subsection{Example Using Helpers}
%
% \begin{tabular}
% {b{0.5\tabcolwidthii\hangindent2ex}%
% b{0.5\tabcolwidthii\hangindent2ex}}
% \toprule
% Article & Remark \\
% \midrule
% Beer      & Note that this article
%         can be sold only
%         in special shops\\
% Whisky    &  ---          \\
% \bottomrule
% \end{tabular}
% \vskip3ex
% Source code:
% \begin{verbatim}
% \begin{tabular}
% {b{0.5\tabcolwidthii\hangindent2ex}%
% b{0.5\tabcolwidthii\hangindent2ex}}
% \toprule
% Article & Remark \\
% \midrule
% Beer      & Note that this article
%         can be sold only
%         in special shops\\
% Whisky    &  ---          \\
% \bottomrule
% \end{tabular}
% \end{verbatim}
%
% \subsection{Example Using Helpers}
% \label{2010.04.03.17:45}
%
% \begin{tabular}
% {b{0.25\tabcolwidthiv\hangindent2ex}%
%  b{0.25\tabcolwidthiv\hangindent2ex}%
%  b{0.25\tabcolwidthiv\hangindent2ex}%
%  b{0.25\tabcolwidthiv\hangindent2ex}}%
% \toprule
% Article &\hskip-2ex Code & \hskip-4ex Subcode & Remark\\
% \midrule
% Beer    &B&12  & Note that this article
%         can be sold only
%         in special shops\\
% Whisky    &W&10&  ---          \\
% \bottomrule
% \end{tabular}
% \vskip3ex
% Source code:
% \begin{verbatim}
% \begin{tabular}
% {b{0.25\tabcolwidthiv\hangindent2ex}%
%  b{0.25\tabcolwidthiv\hangindent2ex}%
%  b{0.25\tabcolwidthiv\hangindent2ex}%
%  b{0.25\tabcolwidthiv\hangindent2ex}}%
% \toprule
% Article &\hskip-2ex Code & \hskip-4ex Subcode & Remark\\
% \midrule
% Beer    &B&12  & Note that this article
%         can be sold only
%         in special shops\\
% Whisky    &W&10&  ---          \\
% \bottomrule
% \end{tabular}
% \end{verbatim}
%
% \subsection{Array Example}
% The |array| environment is left as before:
% \[
% \begin{array}{lcr}
% \toprule
% x^2+y^2 &=& z^2\\
% \end{array}
% \]
% \vskip3ex
% Source code:
% \begin{verbatim}
% \[
% \begin{array}{lcr}
% \toprule
% x^2+y^2 &=& z^2\\
% \end{array}
% \]
% \end{verbatim}
% \subsection{Example Using Tabular Star Form}
%
% The following does not make sense:
% \vskip3ex
% \begin{tabular*}{0.5\textwidth}{@{}lr}
% \toprule
% first column & second column\\
% first column & next second column\\
% \bottomrule
% \end{tabular*}
%
% \vskip3ex
% Source code:
% \vskip3ex
%
%
% \begin{verbatim}
% \begin{tabular*}{0.5\textwidth}{@{}lr}
% \toprule
% first column & second column\\
% first column & next second column\\
% \bottomrule
% \end{tabular*}
% \end{verbatim}
%
%
%
% \subsection{Nested Tabular Example}
%
% A nested tabular:
% \vskip3ex
% \begin{tabular}{ll}
% \toprule
% first column & second column\\
% first column & next second column\\
% \bottomrule
% \multicolumn{2}{l}
% {\begin{tabular}{ll}
% \textsuperscript{a} & A nested tabular, longer in this field now \\
% \end{tabular}}\\
% \end{tabular}
%
% \vskip3ex
% Source code:
% \vskip3ex
%
%
% \begin{verbatim}
% \begin{tabular}{ll}
% \toprule
% first column & second column\\
% first column & next second column\\
% \bottomrule
% \multicolumn{2}{l}
% {\begin{tabular}{ll}
% \textsuperscript{a} & A nested tabular, longer in this field now \\
% \end{tabular}}\\
% \end{tabular}
% \end{verbatim}
%
%
%
%
%
%
% \StopEventually{\PrintIndex}
%
% \section{Implementation}
%
%\iffalse
%<*package>
%\fi
% \begin{macro}{\RequirePackage}
% This package has been tested based on the following package:
%    \begin{macrocode}
\RequirePackage{booktabs}
\RequirePackage{array}[2003/12/17 v2.4a Tabular extension package (FMi)]
%    \end{macrocode}
% However, the examples given here are working with version |v2.4c| too.
% \end{macro}
% \begin{macro}{\tb@ialign}
% We redefine |\ialign|, |\tabskip| into |-\col@sep|:
%    \begin{macrocode}
\newcommand{\tb@ialign}{\everycr{}\tabskip-\col@sep\halign}
%    \end{macrocode}
% Here we change definitions so that only the |tabular| is involved.
%    \begin{macrocode}
\newcommand{\tb@tbtabarray}{\@ifnextchar[{\tb@array}{\tb@array[c]}}
\def\@tabular{%
  \leavevmode
  \hbox \bgroup $\col@sep\tabcolsep \let\d@llarbegin\begingroup
                                    \let\d@llarend\endgroup
  \@tb@tbtabarray}
%    \end{macrocode}
% \end{macro}
% \begin{macro}{\tbon \tboff}
% The following allows to switch back to the original settings by |\tboff| and reactivate by |\tbon|.
%    \begin{macrocode}
\newcommand{\@tb@tbtabarray}{}
\newcommand{\tbon}{\global\let\@tb@tbtabarray\tb@tbtabarray}
\tbon
\newcommand{\tboff}{\global\let\@tb@tbtabarray\@tabarray}
%    \end{macrocode}
% \end{macro}
% \begin{macro}{\tb@array}
% We change the definition of the macro |\@@array| and rename it.
% Only three changes are needed, but we must place the full macro.
%    \begin{macrocode}
\newcommand{\tb@array}{}
\def\tb@array[#1]#2{%
  \@tempdima \ht \strutbox
  \advance \@tempdima by\extrarowheight
  \setbox \@arstrutbox \hbox{\vrule
             \@height \arraystretch \@tempdima
             \@depth \arraystretch \dp \strutbox
             \@width \z@}%
%    \end{macrocode}
%    \begin{macrocode}
  \begingroup
  \@mkpream{#2}%
%    \end{macrocode}
% Here we use |\tb@ialign|, and in the next line we reset the |\tabskip|.
%    \begin{macrocode}
  \xdef\@preamble{\noexpand \tb@ialign \@halignto
                  \bgroup \@arstrut \tabskip \z@skip \@preamble
%    \end{macrocode}
% In the next line we are switching the |\tabskip| to
% |-\col@sep|.
%    \begin{macrocode}
                          \tabskip-\col@sep \cr}%
%    \end{macrocode}
% The rest of the macro is unchanged.
%    \begin{macrocode}
  \endgroup
  \@arrayleft
  \if #1t\vtop \else \if#1b\vbox \else \vcenter \fi \fi
  \bgroup
  \let \@sharp ##\let \protect \relax
  \lineskip \z@
  \baselineskip \z@
  \m@th
  \let\\\@arraycr \let\tabularnewline\\\let\par\@empty \@preamble}
%    \end{macrocode}
% \end{macro}
%
% \subsection{Additional Helpers}
% Here are some additional definitions that facilitate the handling of a tabular.
% An example is given in section \ref{2010.04.03.17:45}.
%    \begin{macrocode}
\ifdefined\tabcolwidthi\else\newlength{\tabcolwidthi}\fi
\ifdefined\tabcolwidthii\else\newlength{\tabcolwidthii}\fi
\ifdefined\tabcolwidthiii\else\newlength{\tabcolwidthiii}\fi
\ifdefined\tabcolwidthiv\else\newlength{\tabcolwidthiv}\fi
\setlength{\tabcolwidthi}{\textwidth}
\addtolength{\tabcolwidthi}{-0\tabcolsep}
\setlength{\tabcolwidthii}{\textwidth}
\addtolength{\tabcolwidthii}{-2\tabcolsep}
\setlength{\tabcolwidthiii}{\textwidth}
\addtolength{\tabcolwidthiii}{-4\tabcolsep}
\setlength{\tabcolwidthiv}{\textwidth}
\addtolength{\tabcolwidthiv}{-6\tabcolsep}
%    \end{macrocode}
%\iffalse
%</package>
%\fi
% \PrintChanges
% \Finale
\endinput