oberdiek update (8dec06)

git-svn-id: svn://tug.org/texlive/trunk@2619 c570f23f-e606-0410-a88d-b1316a301751

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+% \iffalse meta-comment
+%
+% Copyright (C) 2006 by Heiko Oberdiek <oberdiek@uni-freiburg.de>
+%
+% This work may be distributed and/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".
+%
+% This Current Maintainer of this work is Heiko Oberdiek.
+%
+% This work consists of the main source file centernot.dtx
+% and the derived files
+%    centernot.sty, centernot.pdf, centernot.ins, centernot.drv.
+%
+% Distribution:
+%    CTAN:macros/latex/contrib/oberdiek/centernot.dtx
+%    CTAN:macros/latex/contrib/oberdiek/centernot.pdf
+%
+% Unpacking:
+%    (a) If centernot.ins is present:
+%           tex centernot.ins
+%    (b) Without centernot.ins:
+%           tex centernot.dtx
+%    (c) If you insist on using LaTeX
+%           latex \let\install=y\input{centernot.dtx}
+%        (quote the arguments according to the demands of your shell)
+%
+% Documentation:
+%    (a) If centernot.drv is present:
+%           latex centernot.drv
+%    (b) Without centernot.drv:
+%           latex centernot.dtx; ...
+%    The class ltxdoc loads the configuration file ltxdoc.cfg
+%    if available. Here you can specify further options, e.g.
+%    use A4 as paper format:
+%       \PassOptionsToClass{a4paper}{article}
+%
+%    Programm calls to get the documentation (example):
+%       pdflatex centernot.dtx
+%       makeindex -s gind.ist centernot.idx
+%       pdflatex centernot.dtx
+%       makeindex -s gind.ist centernot.idx
+%       pdflatex centernot.dtx
+%
+% Installation:
+%    TDS:tex/latex/oberdiek/centernot.sty
+%    TDS:doc/latex/oberdiek/centernot.pdf
+%    TDS:source/latex/oberdiek/centernot.dtx
+%
+%<*ignore>
+\begingroup
+  \def\x{LaTeX2e}
+\expandafter\endgroup
+\ifcase 0\ifx\install y1\fi\expandafter
+         \ifx\csname processbatchFile\endcsname\relax\else1\fi
+         \ifx\fmtname\x\else 1\fi\relax
+\else\csname fi\endcsname
+%</ignore>
+%<*install>
+\input docstrip.tex
+\Msg{************************************************************************}
+\Msg{* Installation}
+\Msg{* Package: centernot 2006/12/02 v1.0 Centers the not symbol horizontally (HO)}
+\Msg{************************************************************************}
+
+\keepsilent
+\askforoverwritefalse
+
+\preamble
+
+This is a generated file.
+
+Copyright (C) 2006 by Heiko Oberdiek <oberdiek@uni-freiburg.de>
+
+This work may be distributed and/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".
+
+This Current Maintainer of this work is Heiko Oberdiek.
+
+This work consists of the main source file centernot.dtx
+and the derived files
+   centernot.sty, centernot.pdf, centernot.ins, centernot.drv.
+
+\endpreamble
+
+\generate{%
+  \file{centernot.ins}{\from{centernot.dtx}{install}}%
+  \file{centernot.drv}{\from{centernot.dtx}{driver}}%
+  \usedir{tex/latex/oberdiek}%
+  \file{centernot.sty}{\from{centernot.dtx}{package}}%
+}
+
+\obeyspaces
+\Msg{************************************************************************}
+\Msg{*}
+\Msg{* To finish the installation you have to move the following}
+\Msg{* file into a directory searched by TeX:}
+\Msg{*}
+\Msg{*     centernot.sty}
+\Msg{*}
+\Msg{* To produce the documentation run the file `centernot.drv'}
+\Msg{* through LaTeX.}
+\Msg{*}
+\Msg{* Happy TeXing!}
+\Msg{*}
+\Msg{************************************************************************}
+
+\endbatchfile
+%</install>
+%<*ignore>
+\fi
+%</ignore>
+%<*driver>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesFile{centernot.drv}%
+  [2006/12/02 v1.0 Centers the not symbol horizontally (HO)]
+\documentclass{ltxdoc}
+\usepackage{holtxdoc}
+\usepackage{centernot}
+\begin{document}
+  \DocInput{centernot.dtx}
+\end{document}
+%</driver>
+% \fi
+%
+% \CheckSum{23}
+%
+% \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         \~}
+%
+% \GetFileInfo{centernot.drv}
+%
+% \title{The \xpackage{centernot} package}
+% \date{2006/12/02 v1.0}
+% \author{Heiko Oberdiek\\\xemail{oberdiek@uni-freiburg.de}}
+%
+% \maketitle
+%
+% \begin{abstract}
+% This package provides \cs{centernot} that prints the symbol
+% \cs{not} on the following argument. Unlike \cs{not} the symbol
+% is horizontally centered.
+% \end{abstract}
+%
+% \tableofcontents
+%
+% \section{User interface}
+%
+% If a negotiated relational symbol is not available, \cs{not}
+% can be used to create the negotiated variant of the relational
+% symbol. The disadvantage of \cs{not} is that it is put at
+% a fixed location regardless of the width of the relational
+% symbol. Therefore \cs{centernot} takes an argument and
+% measures its width to achieve a better placement of the
+% symbol \cs{not}.
+% Examples:
+% \begin{quote}
+%   \begin{tabular}{@{}cccl@{}}
+%     Symbol & \cs{not} & \cs{centernot} &\\
+%     \hline
+%     |=| & $\not=$ & $\centernot=$ & \textit{(definition)}\\
+%     \cs{parallel} & $\not\parallel$ & $\centernot\parallel$\\
+%     \cs{longrightarrow} &
+%       $\not\longrightarrow$ & $\centernot\longrightarrow$
+%   \end{tabular}
+% \end{quote}
+%
+% \StopEventually{
+% }
+%
+% \section{Implementation}
+%
+%    \begin{macrocode}
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{centernot}
+  [2006/12/02 v1.0 Centers the not symbol horizontally (HO)]
+%    \end{macrocode}
+%
+%    \noindent
+%    \cs{not} is a \cs{mathrel} atom with zero width. It prints itself
+%    outside its character box, similar to \cs{rlap}. The next
+%    \cs{mathrel} symbol is then print on top of it. \TeX\ does not
+%    add space between two \cs{mathrel} atoms. The following implementation
+%    assumes that the math font is designed in such a way that the
+%    position of \cs{not} fits well on the equal symbol.
+%
+%    The blue boxes marks the character bounding boxes seen by \TeX:
+%    \begin{quote}
+%      \setlength{\fboxrule}{.8pt}
+%      \setlength{\fboxsep}{.8pt}
+%      \def\xbox#1{^^A
+%        \begingroup
+%          \large
+%          \color{blue}%
+%          \fbox{\color{black}\boldmath$#1$}^^A
+%          \kern-2\fboxsep
+%          \kern-2\fboxrule
+%        \endgroup
+%      }
+%      \begin{tabular}{@{}c@{\qquad}c@{\qquad}c@{}}
+%        |\not| & |=| & |\not=|\\
+%        \xbox{\not} & \xbox{=} & \xbox{\not}\xbox{=}
+%      \end{tabular}
+%    \end{quote}
+%    \begin{macro}{\centernot}
+%    \cs{centernot} is not a symbol but a macro that takes
+%    one argument. It measures the width of the argument
+%    and places \cs{not} horizontally centered on that argument.
+%    The result is a \cs{mathrel} atom.
+%    \begin{macrocode}
+\newcommand*{\centernot}{%
+  \mathpalette\@centernot
+}
+\def\@centernot#1#2{%
+  \mathrel{%
+    \rlap{%
+      \settowidth\dimen@{$\m@th#1{#2}$}%
+      \kern.5\dimen@
+      \settowidth\dimen@{$\m@th#1=$}%
+      \kern-.5\dimen@
+      $\m@th#1\not$%
+    }%
+    {#2}%
+  }%
+}
+\makeatother
+%    \end{macrocode}
+%    \end{macro}
+%
+%    \begin{macrocode}
+%</package>
+%    \end{macrocode}
+% \section{Installation}
+%
+% \paragraph{CTAN.} This package is available on
+% CTAN\footnote{\url{ftp://ftp.ctan.org/tex-archive/}}:
+% \begin{description}
+% \item[\CTAN{macros/latex/contrib/oberdiek/centernot.dtx}] The source file.
+% \item[\CTAN{macros/latex/contrib/oberdiek/centernot.pdf}] Documentation.
+% \end{description}
+%
+% \paragraph{Unpacking.} The \xfile{.dtx} file is a self-extracting
+% \docstrip\ archive. The files are extracted by running the
+% \xfile{.dtx} through \plainTeX:
+% \begin{quote}
+%   \verb|tex centernot.dtx|
+% \end{quote}
+%
+% \paragraph{TDS.} Now the different files must be moved into
+% the different directories in your installation TDS tree
+% (also known as \xfile{texmf} tree):
+% \begin{quote}
+% \sbox0{^^A
+% \begin{tabular}{@{}>{\ttfamily}l@{$\quad\rightarrow\quad$}>{\ttfamily}l@{}}
+%   centernot.sty & tex/latex/oberdiek/centernot.sty\\
+%   centernot.pdf & doc/latex/oberdiek/centernot.pdf\\
+%   centernot.dtx & source/latex/oberdiek/centernot.dtx\\
+% \end{tabular}^^A
+% }%
+% \ifdim\wd0>\linewidth
+%   \mbox{}\nobreak\hskip0pt minus\leftmargin
+%   \usebox0
+%   \nobreak\hskip0pt minus\rightmargin
+% \else
+%   \usebox0
+% \fi
+% \end{quote}
+% If you have a \xfile{docstrip.cfg} that configures and enables \docstrip's
+% TDS installing feature, then some files can already be in the right
+% place, see the documentation of \docstrip.
+%
+% \paragraph{Refresh file databases.} If your \TeX~distribution
+% (\teTeX, \mikTeX, \dots) rely on file databases, you must refresh
+% these. For example, \teTeX\ users run \verb|texhash| or
+% \verb|mktexlsr|.
+%
+% \subsection{Some details for the interested}
+%
+% \paragraph{Attached source.}
+%
+% The PDF documentation on CTAN also includes the
+% \xfile{.dtx} source file. It can be extracted by
+% AcrobatReader 6 or higher. Another option is \textsf{pdftk},
+% e.g. unpack the file into the current directory:
+% \begin{quote}
+%   \verb|pdftk centernot.pdf unpack_files output .|
+% \end{quote}
+%
+% \paragraph{Unpacking with \LaTeX.}
+% The \xfile{.dtx} chooses its action depending on the format:
+% \begin{description}
+% \item[\plainTeX:] Run \docstrip\ and extract the files.
+% \item[\LaTeX:] Generate the documentation.
+% \end{description}
+% If you insist on using \LaTeX\ for \docstrip\ (really,
+% \docstrip\ does not need \LaTeX), then inform the autodetect routine
+% about your intension:
+% \begin{quote}
+%   \verb|latex \install=y\input{centernot.dtx}|
+% \end{quote}
+% Do not forget to quote the argument according to the demands
+% of your shell.
+%
+% \paragraph{Generating the documentation.}
+% You can use both the \xfile{.dtx} or the \xfile{.drv} to generate
+% the documentation. The process can be configured by the
+% configuration file \xfile{ltxdoc.cfg}. For instance, put this
+% line into this file, if you want to have A4 as paper format:
+% \begin{quote}
+%   \verb|\PassOptionsToClass{a4paper}{article}|
+% \end{quote}
+% An example follows how to generate the
+% documentation with pdf\LaTeX:
+% \begin{quote}
+%\begin{verbatim}
+%pdflatex centernot.dtx
+%makeindex -s gind.ist centernot.idx
+%pdflatex centernot.dtx
+%makeindex -s gind.ist centernot.idx
+%pdflatex centernot.dtx
+%\end{verbatim}
+% \end{quote}
+%
+% \begin{History}
+%   \begin{Version}{2006/12/02 v1.0}
+%   \item
+%     First version.
+%   \end{Version}
+% \end{History}
+%
+% \PrintIndex
+%
+% \Finale
+\endinput