% \iffalse meta-comment
% 
% Copyright (C) 2006, 2007, 2009, 2010 by
%    Heiko Oberdiek <heiko.oberdiek at googlemail.com>
% 
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3c of this license or (at your option) any later
% version. This version of this license is in
%    http://www.latex-project.org/lppl/lppl-1-3c.txt
% and 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.
% 
% The Base Interpreter refers to any `TeX-Format',
% because some files are installed in TDS:tex/generic//.
% 
% This work consists of the main source file kvsetkeys.dtx
% and the derived files
%    kvsetkeys.sty, kvsetkeys.pdf, kvsetkeys.ins, kvsetkeys.drv,
%    kvsetkeys-example.tex, kvsetkeys-test1.tex,
%    kvsetkeys-test2.tex, kvsetkeys-test3.tex.
% 
% Distribution:
%    CTAN:macros/latex/contrib/oberdiek/kvsetkeys.dtx
%    CTAN:macros/latex/contrib/oberdiek/kvsetkeys.pdf
% 
% Unpacking:
%    (a) If kvsetkeys.ins is present:
%           tex kvsetkeys.ins
%    (b) Without kvsetkeys.ins:
%           tex kvsetkeys.dtx
%    (c) If you insist on using LaTeX
%           latex \let\install=y\input{kvsetkeys.dtx}
%        (quote the arguments according to the demands of your shell)
% 
% Documentation:
%    (a) If kvsetkeys.drv is present:
%           latex kvsetkeys.drv
%    (b) Without kvsetkeys.drv:
%           latex kvsetkeys.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 kvsetkeys.dtx
%       makeindex -s gind.ist kvsetkeys.idx
%       pdflatex kvsetkeys.dtx
%       makeindex -s gind.ist kvsetkeys.idx
%       pdflatex kvsetkeys.dtx
% 
% Installation:
%    TDS:tex/generic/oberdiek/kvsetkeys.sty
%    TDS:doc/latex/oberdiek/kvsetkeys.pdf
%    TDS:doc/latex/oberdiek/kvsetkeys-example.tex
%    TDS:doc/latex/oberdiek/test/kvsetkeys-test1.tex
%    TDS:doc/latex/oberdiek/test/kvsetkeys-test2.tex
%    TDS:doc/latex/oberdiek/test/kvsetkeys-test3.tex
%    TDS:source/latex/oberdiek/kvsetkeys.dtx
%
%<*ignore>
\begingroup
  \catcode123=1 %
  \catcode125=2 %
  \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: kvsetkeys 2010/03/01 v1.9 Key value parser (HO)}
\Msg{************************************************************************}

\keepsilent
\askforoverwritefalse

\let\MetaPrefix\relax
\preamble

This is a generated file.

Copyright (C) 2006, 2007, 2009, 2010 by
   Heiko Oberdiek <heiko.oberdiek at googlemail.com>

This work may be distributed and/or modified under the
conditions of the LaTeX Project Public License, either
version 1.3c of this license or (at your option) any later
version. This version of this license is in
   http://www.latex-project.org/lppl/lppl-1-3c.txt
and 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.

The Base Interpreter refers to any `TeX-Format',
because some files are installed in TDS:tex/generic//.

This work consists of the main source file kvsetkeys.dtx
and the derived files
   kvsetkeys.sty, kvsetkeys.pdf, kvsetkeys.ins, kvsetkeys.drv,
   kvsetkeys-example.tex, kvsetkeys-test1.tex,
   kvsetkeys-test2.tex, kvsetkeys-test3.tex.

\endpreamble
\let\MetaPrefix\DoubleperCent

\generate{%
  \file{kvsetkeys.ins}{\from{kvsetkeys.dtx}{install}}%
  \file{kvsetkeys.drv}{\from{kvsetkeys.dtx}{driver}}%
  \usedir{tex/generic/oberdiek}%
  \file{kvsetkeys.sty}{\from{kvsetkeys.dtx}{package}}%
  \usedir{doc/latex/oberdiek}%
  \file{kvsetkeys-example.tex}{\from{kvsetkeys.dtx}{example}}%
  \usedir{doc/latex/oberdiek/test}%
  \file{kvsetkeys-test1.tex}{\from{kvsetkeys.dtx}{test1}}%
  \file{kvsetkeys-test2.tex}{\from{kvsetkeys.dtx}{test2}}%
  \file{kvsetkeys-test3.tex}{\from{kvsetkeys.dtx}{test2,noetex}}%
}

\catcode32=13\relax% active space
\let =\space%
\Msg{************************************************************************}
\Msg{*}
\Msg{* To finish the installation you have to move the following}
\Msg{* file into a directory searched by TeX:}
\Msg{*}
\Msg{*     kvsetkeys.sty}
\Msg{*}
\Msg{* And install the following script file:}
\Msg{*}
\Msg{*     }
\Msg{*}
\Msg{* To produce the documentation run the file `kvsetkeys.drv'}
\Msg{* through LaTeX.}
\Msg{*}
\Msg{* Happy TeXing!}
\Msg{*}
\Msg{************************************************************************}

\endbatchfile
%</install>
%<*ignore>
\fi
%</ignore>
%<*driver>
\NeedsTeXFormat{LaTeX2e}
\ProvidesFile{kvsetkeys.drv}%
  [2010/03/01 v1.9 Key value parser (HO)]%
\documentclass{ltxdoc}
\usepackage{holtxdoc}[2008/08/11]
\begin{document}
  \DocInput{kvsetkeys.dtx}%
\end{document}
%</driver>
% \fi
%
% \CheckSum{1135}
%
% \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{kvsetkeys.drv}
%
% \title{The \xpackage{kvsetkeys} package}
% \date{2010/03/01 v1.9}
% \author{Heiko Oberdiek\\\xemail{heiko.oberdiek at googlemail.com}}
%
% \maketitle
%
% \begin{abstract}
% Package \xpackage{kvsetkeys} provides \cs{kvsetkeys}, a variant
% of package \xpackage{keyval}'s \cs{setkeys}. It allows to specify
% a handler that deals with unknown options. Active commas and equal
% signs may be used (e.g. see \xpackage{babel}'s shorthands) and
% only one level of curly braces is removed from the values.
% \end{abstract}
%
% \tableofcontents
%
% \def\M#1{\texttt{\{}\meta{#1}\texttt{\}}}
%
% \section{Documentation}
%
% First I want to recommend the very good review article
% ``A guide to key-value methods'' by Joseph Wright \cite{tb94wright}.
% It introduces the different key-value packages and compares them.
%
% \subsection{Motivation}
%
% \cs{kvsetkeys} serves as replacement for \xpackage{keyval}'s
% \cs{setkeys}. It basically uses the same syntax. But the
% implementation is more robust and predictable:
% \begin{description}
% \item[Active syntax characters:]
%   Comma `|,|' and the equals sign `|=|' are used inside
%   key value lists as syntax characters. Package \xpackage{keyval}
%   uses the catcode of the characters that is active during
%   package loading, usually this is catcode 12 (other).
%   But it can happen that the catcode setting of the syntax characters
%   changes. Especially active characters are of interest, because
%   some language adaptations uses them. For example, option \xoption{turkish}
%   of package \xpackage{babel} uses the equals sign as active shorthand
%   character. Therefore package \xpackage{kvsetkeys} deals with
%   both catcode settings 12 (other) and 13 (active).
% \item[Brace removal:]
%   Package \xpackage{keyval}'s \cs{setkeys} removes up to two
%   levels of curly braces around the value in some unpredictable way:
%\begin{quote}
%|\setkeys{fam}{key={{value}}} || || | $\rightarrow$ |value|\\
%|\setkeys{fam}{key={{{value}}}} | $\rightarrow$ |{value}|\\
%|\setkeys{fam}{key= {{{value}}}}| $\rightarrow$ |{{value}}|
%\end{quote}
%   This package \xpackage{kvsetkeys} follows a much stronger rule:
%   Exactly one level of braces are removed from an item, if the
%   item is surrounded by curly braces. An item can be a
%   the key value pair, the key or the value.
%\begin{quote}
%|\kvsetkeys{fam}{key={value}} || | $\rightarrow$ |value|\\
%|\kvsetkeys{fam}{key={{value}} | $\rightarrow$ |{value}|\\
%|\kvsetkeys{fam}{key= {{value}}| $\rightarrow$ |{value}|
%\end{quote}
% \item[Arbitrary values:] Unmatched conditionals are supported.
% \end{description}
%
% Before I describe
% \cs{kvsetkeys} in more detail, first I want to explain, how
% this package deals with key value lists. For the package also
% provides low level interfaces that can be used by package authors.
%
% \subsection{Normalizing key value lists}
%
% \begin{declcs}{kv@normalize}\,\M{key value list}
% \end{declcs}
% If the user specifies key value lists, he usually prefers
% nice formatted source code, e.g.:
% \begin{quote}
%\begin{verbatim}
%\hypersetup{
%  pdftitle    = {...},
%  pdfsubject  = {...},
%  pdfauthor   = {...},
%  pdfkeywords = {...},
%  ...
%}
%\end{verbatim}
% \end{quote}
% Thus there can be spaces around keys, around |=| or around the value.
% Also empty entries are possible by too many commas. Therefore these
% spaces and empty entries are silently removed by package \xpackage{keyval}
% and this package. Whereas the contents of the value can be protected
% by curly braces, especially if spaces or commas are used inside,
% a key name must not use spaces or other syntax characters.
%
% \cs{kv@normalize} takes a key value list and performs the cleanup:
% \begin{itemize}
% \item Spaces are removed.
% \item Syntax characters (comma and equal sign) that are active
%   are replaced by the same characters with standard catcode.
%   (Example: \xpackage{babel}'s language option \xoption{turkish}
%   uses the equal sign as active shorthand character.)
% \end{itemize}
% The result is stored in \cs{kv@list}, e.g.:
% \begin{quote}
% |\kv@list| $\rightarrow$ |,pdftitle={...},pdfsubject={...},...,|
% \end{quote}
% Curly braces around values (or keys) remain untouched.
% \begin{description}
% \item[v1.3+:]
% One comma is added in front of the list and each pair ends with
% a comma. Thus an empty list consists of one comma, otherwise
% two commas encloses the list. Empty entries other than the first
% are removed.
% \item[v1.0 -- v1.2:]
% Empty entries are removed later. In fact it adds a comma at the begin
% and end to protect the last value and an easier implementation.
% \end{description}
%
% \subsection{Parsing key value lists}
%
% \begin{declcs}{kv@parse}\,\M{key value list}\,\M{processor}
% \end{declcs}
% It is easier to parse a normalized list, thus \cs{kv@parse}
% normalizes the list and calls \cs{kv@parse@normalized}.
%
% \begin{declcs}{kv@parse@normalized}\,\M{key value list}%
%   \,\M{processor}
% \end{declcs}
% Now the key value list is split into single key value pairs.
% For further processing the key and value are given as arguments
% for the \meta{processor}:
% \begin{quote}
%   \meta{processor}\,\M{key}\,\M{value}
% \end{quote}
% Also key and value are stored in macro names:
% \begin{itemize}
% \item \cs{kv@key} stores the key.
% \item \cs{kv@value} stores the value or if the value was not
%   specified it has the meaning \cs{relax}.
% \end{itemize}
% The behaviour in pseudo code:
% \begin{quote}
%   foreach (\meta{key}, \meta{value}) in (\meta{key value list})\\
%   \hspace*{1.5em}\cs{kv@key} := \meta{key}\\
%   \hspace*{1.5em}\cs{kv@value} := \meta{value}\\
%   \hspace*{1.5em}\meta{processor}\,\M{key}\,\M{value}
% \end{quote}
%
% \subsection{Processing key value pairs}
%
% \begin{declcs}{kv@processor@default}\,\M{family}\,\M{key}\,\M{value}
% \end{declcs}
% There are many possiblities to process key value pairs.
% \cs{kv@processor@default} is the processor used in \cs{kvsetkeys}.
% It reimplements and extends the behaviour of
% \xpackage{keyval}'s \cs{setkeys}.
% In case of unknown keys \cs{setkeys} raise an error.
% This processer, however, calls a handler instead, if it
% is provided by the family.
%
% The behaviour in pseudo code:
% \begin{quote}
%   if \meta{key} exists\\
%   \hspace*{1.5em}call the keyval code of \meta{key}\\
%   else\\
%   \hspace*{1.5em}if \meta{handler} for \meta{family} exists\\
%   \hspace*{3em}\meta{handler}\,\M{key}\,\M{value}\\
%   \hspace*{1.5em}else\\
%   \hspace*{3em}raise unknown key error\\
%   \hspace*{1.5em}fi\\
%   fi
% \end{quote}
%
% \subsection{Default family handler}
%
% \cs{kv@processor@default} calls \meta{handler}, the default
% handler for the family, if the key does not exist in the family.
% The handler is called with two arguments, the key and the value.
% It can be defined with \cs{kv@set@family@hander}:
%
% \begin{declcs}{kv@set@family@handler}\,\M{family}\,\M{handler definition}
% \end{declcs}
% This sets the default family handler for the keyval family
% \meta{family}. Inside \meta{handler definition} |#1| stands for
% the key and |#2| is the value. Also \cs{kv@key} and \cs{kv@value}
% can be used for the key and the value. If the value is not given,
% \cs{kv@value} has the meaning \cs{relax}.
%
% \subsection{Put it all together}
%
% \begin{declcs}{kvsetkeys}\,\M{family}\,\M{key value list}
% \end{declcs}
% The work is done by the previous commands. \cs{kvsetkeys}
% just calls them:
% \begin{quote}
%   \cs{kv@parse}\,\M{key value list}^^A
%   \texttt{\{}\cs{kv@processor@default}\,\M{family}\texttt{\}}
% \end{quote}
%
% Thus you can replace \cs{setkeys} of package \xpackage{keyval}
% by the key value parser of this package:
% \begin{quote}
%   |\renewcommand*{\setkeys}{\kvsetkeys}|\\
%   or\\
%   |\let\setkeys\kvsetkeys|
% \end{quote}
%
% \subsection{Comma separated lists}
%
% Since version 2007/09/29 v1.3 this package also supports the normalizing
% and parsing of general comma separated lists.
%
% \begin{declcs}{comma@normalize}\,\M{comma list}
% \end{declcs}
% Macro \cs{comma@normalize} normalizes the comma separated list,
% removes spaces around commas. The result is put in macro \cs{comma@list}.
%
% \begin{declcs}{comma@parse}\,\M{comma list}\,\M{processor}
% \end{declcs}
% Macro \cs{comma@parse} first normalizes the comma separated list
% and then parses the list by calling \cs{comma@parse@normalized}.
%
% \begin{declcs}{comma@parse@normalized}\,\M{normalized comma list}^^A
%   \,\M{processor}
% \end{declcs}
% The list is parsed. Empty entries are ignored. \meta{processor}
% is called for each non-empty entry with the entry as argument:
% \begin{quote}
%   \meta{processor}|{|\meta{entry}|}|
% \end{quote}
% Also the entry is stored in the macro \cs{comma@entry}.
%
% \section{Example}
%
% The following example prints a short piece of HTML code using
% the tabbing environment for indenting purpose and a key value
% syntax for specifying the attributes of an HTML tag.
% The example illustrates the use of a default family handler.
%    \begin{macrocode}
%<*example>
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{kvsetkeys}
\usepackage{keyval}

\makeatletter
\newcommand*{\tag}[2][]{%
  % #1: attributes
  % #2: tag name
  \begingroup
    \toks@={}%
    \let\@endslash\@empty
    \kvsetkeys{tag}{#1}%
    \texttt{%
      \textless #2\the\toks@\@endslash\textgreater
    }%
  \endgroup
}
\kv@set@family@handler{tag}{%
  % #1: key
  % #2: value
  \toks@\expandafter{%
    \the\toks@
    \space
    #1=\string"#2\string"%
  }%
}
\define@key{tag}{/}[]{%
  \def\@endslash{/}%
}
\makeatother

\begin{document}
\begin{tabbing}
  \mbox{}\qquad\=\qquad\=\kill
  \tag{html}\\
  \>\dots\\
  \>\tag[border=1]{table}\\
  \>\>\tag[width=200, span=3, /]{colgroup}\\
  \>\>\dots\\
  \>\tag{/table}\\
  \>\dots\\
  \tag{/html}\\
\end{tabbing}
\end{document}
%</example>
%    \end{macrocode}
%
% \StopEventually{
% }
%
% \section{Implementation}
%
% \subsection{Identification}
%
%    \begin{macrocode}
%<*package>
%    \end{macrocode}
%    Reload check, especially if the package is not used with \LaTeX.
%    \begin{macrocode}
\begingroup
  \catcode44 12 % ,
  \catcode45 12 % -
  \catcode46 12 % .
  \catcode58 12 % :
  \catcode64 11 % @
  \catcode123 1 % {
  \catcode125 2 % }
  \expandafter\let\expandafter\x\csname ver@kvsetkeys.sty\endcsname
  \ifx\x\relax % plain-TeX, first loading
  \else
    \def\empty{}%
    \ifx\x\empty % LaTeX, first loading,
      % variable is initialized, but \ProvidesPackage not yet seen
    \else
      \catcode35 6 % #
      \expandafter\ifx\csname PackageInfo\endcsname\relax
        \def\x#1#2{%
          \immediate\write-1{Package #1 Info: #2.}%
        }%
      \else
        \def\x#1#2{\PackageInfo{#1}{#2, stopped}}%
      \fi
      \x{kvsetkeys}{The package is already loaded}%
      \aftergroup\endinput
    \fi
  \fi
\endgroup
%    \end{macrocode}
%    Package identification:
%    \begin{macrocode}
\begingroup
  \catcode35 6 % #
  \catcode40 12 % (
  \catcode41 12 % )
  \catcode44 12 % ,
  \catcode45 12 % -
  \catcode46 12 % .
  \catcode47 12 % /
  \catcode58 12 % :
  \catcode64 11 % @
  \catcode91 12 % [
  \catcode93 12 % ]
  \catcode123 1 % {
  \catcode125 2 % }
  \expandafter\ifx\csname ProvidesPackage\endcsname\relax
    \def\x#1#2#3[#4]{\endgroup
      \immediate\write-1{Package: #3 #4}%
      \xdef#1{#4}%
    }%
  \else
    \def\x#1#2[#3]{\endgroup
      #2[{#3}]%
      \ifx#1\@undefined
        \xdef#1{#3}%
      \fi
      \ifx#1\relax
        \xdef#1{#3}%
      \fi
    }%
  \fi
\expandafter\x\csname ver@kvsetkeys.sty\endcsname
\ProvidesPackage{kvsetkeys}%
  [2010/03/01 v1.9 Key value parser (HO)]
%    \end{macrocode}
%
%    \begin{macrocode}
\begingroup
  \catcode123 1 % {
  \catcode125 2 % }
  \def\x{\endgroup
    \expandafter\edef\csname KVS@AtEnd\endcsname{%
      \catcode35 \the\catcode35\relax
      \catcode64 \the\catcode64\relax
      \catcode123 \the\catcode123\relax
      \catcode125 \the\catcode125\relax
    }%
  }%
\x
\catcode35 6 % #
\catcode64 11 % @
\catcode123 1 % {
\catcode125 2 % }
\def\TMP@EnsureCode#1#2{%
  \edef\KVS@AtEnd{%
    \KVS@AtEnd
    \catcode#1 \the\catcode#1\relax
  }%
  \catcode#1 #2\relax
}
\TMP@EnsureCode{36}{3}% $
\TMP@EnsureCode{38}{4}% &
\TMP@EnsureCode{39}{12}% '
\TMP@EnsureCode{44}{12}% ,
\TMP@EnsureCode{46}{12}% .
\TMP@EnsureCode{47}{12}% /
\TMP@EnsureCode{61}{12}% =
\TMP@EnsureCode{94}{7}% ^ (superscript)
\TMP@EnsureCode{96}{12}% `
\TMP@EnsureCode{126}{13}% ~ (active)
%    \end{macrocode}
%
% \subsection{Package loading}
%
%    \begin{macrocode}
\begingroup\expandafter\expandafter\expandafter\endgroup
\expandafter\ifx\csname RequirePackage\endcsname\relax
  \input infwarerr.sty\relax
  \input etexcmds.sty\relax
\else
  \RequirePackage{infwarerr}[2007/09/09]%
  \RequirePackage{etexcmds}[2010/01/28]%
\fi
%    \end{macrocode}
%
%    \begin{macrocode}
\expandafter\ifx\csname toks@\endcsname\relax
  \toksdef\toks@=0 %
\fi
%    \end{macrocode}
%
% \subsection{Check for \eTeX}
%
%    \cs{unexpanded}, \cs{ifcsname}, and \cs{unless} are used if found.
%    \begin{macrocode}
\begingroup\expandafter\endgroup
\ifcase0\ifetex@unexpanded
          \expandafter\ifx\csname ifcsname\endcsname\relax
          \else
            \expandafter\ifx\csname unless\endcsname\relax
            \else
              1%
            \fi
          \fi
        \fi
  \catcode`\$=9 % ignore
  \catcode`\&=14 % comment
\else % e-TeX
  \catcode`\$=14 % comment
  \catcode`\&=9  % ignore
\fi
%    \end{macrocode}
%
% \subsection{Generic help macros}
%
%    \begin{macro}{\KVS@Empty}
%    \begin{macrocode}
\def\KVS@Empty{}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@FirstOfTwo}
%    \begin{macrocode}
\long\def\KVS@FirstOfTwo#1#2{#1}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@SecondOfTwo}
%    \begin{macrocode}
\long\def\KVS@SecondOfTwo#1#2{#2}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\KVS@IfEmpty}
%    \begin{macrocode}
\long\def\KVS@IfEmpty#1{%
& \edef\KVS@Temp{\etex@unexpanded{#1}}%
$ \begingroup
$   \toks@{#1}%
$   \edef\KVS@Temp{\the\toks@}%
$ \expandafter\endgroup
  \ifx\KVS@Temp\KVS@Empty
    \expandafter\KVS@FirstOfTwo
  \else
    \expandafter\KVS@SecondOfTwo
  \fi
}
%    \end{macrocode}
%    \end{macro}
%
% \subsection{Normalizing}
%
%    \begin{macro}{\kv@normalize}
%    \begin{macrocode}
\long\def\kv@normalize#1{%
  \begingroup
    \toks@{,#1,}%
    \KVS@Comma
    \KVS@SpaceComma{ }%
    \KVS@CommaSpace
    \KVS@CommaComma
    \KVS@Equals
    \KVS@SpaceEquals{ }%
    \KVS@EqualsSpace
    \xdef\KVS@Global{\the\toks@}%
  \endgroup
  \let\kv@list\KVS@Global
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\comma@normalize}
%    \begin{macrocode}
\def\comma@normalize#1{%
  \begingroup
    \toks@{,#1,}%
    \KVS@Comma
    \KVS@SpaceComma{ }%
    \KVS@CommaSpace
    \KVS@CommaComma
    \xdef\KVS@Global{\the\toks@}%
  \endgroup
  \let\comma@list\KVS@Global
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@Comma}
%    Converts active commas into comma with catcode other.
%    Also adds a comma at the end to protect the last value
%    for next cleanup steps.
%    \begin{macrocode}
\begingroup
  \lccode`\,=`\,%
  \lccode`\~=`\,%
\lowercase{\endgroup
  \def\KVS@Comma{%
    \toks@\expandafter{\expandafter}\expandafter
    \KVS@@Comma\the\toks@~\KVS@Nil
  }%
  \long\def\KVS@@Comma#1~#2\KVS@Nil{%
    \toks@\expandafter{\the\toks@#1}%
    \KVS@IfEmpty{#2}{%
    }{%
      \KVS@@Comma,#2\KVS@Nil
    }%
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@SpaceComma}
%    Removes spaces before the comma, may add commas at the end.
%    \begin{macrocode}
\long\def\KVS@SpaceComma#1{%
  \expandafter\KVS@@SpaceComma\the\toks@#1,\KVS@Nil
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@@SpaceComma}
%    \begin{macrocode}
\long\def\KVS@@SpaceComma#1 ,#2\KVS@Nil{%
  \KVS@IfEmpty{#2}{%
    \toks@{#1}%
  }{%
    \toks@{#1,#2}%
    \expandafter\KVS@@SpaceComma\the\toks@\KVS@Nil
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@CommaSpace}
%    Removes spaces after the comma, may add commas at the end.
%    \begin{macrocode}
\def\KVS@CommaSpace{%
  \expandafter\KVS@@CommaSpace\the\toks@, \KVS@Nil
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@@CommaSpace}
%    \begin{macrocode}
\long\def\KVS@@CommaSpace#1, #2\KVS@Nil{%
  \KVS@IfEmpty{#2}{%
    \toks@{#1}%
  }{%
    \toks@{#1,#2}%
    \expandafter\KVS@@CommaSpace\the\toks@\KVS@Nil
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@CommaComma}
%    Replaces multiple commas by one comma.
%    \begin{macrocode}
\def\KVS@CommaComma{%
  \expandafter\KVS@@CommaComma\the\toks@,\KVS@Nil
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@@CommaComma}
%    \begin{macrocode}
\long\def\KVS@@CommaComma#1,,#2\KVS@Nil{%
  \toks@{#1,#2}%
  \KVS@IfEmpty{#2}{%
  }{%
    \expandafter\KVS@@CommaComma\the\toks@\KVS@Nil
  }%
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\KVS@Equals}
%    Converts active equals signs into catcode other characters.
%    \begin{macrocode}
\begingroup
  \lccode`\==`\=%
  \lccode`\~=`\=%
\lowercase{\endgroup
  \def\KVS@Equals{%
    \toks@\expandafter{\expandafter}\expandafter
    \KVS@@Equals\the\toks@~\KVS@Nil
  }%
  \long\def\KVS@@Equals#1~#2\KVS@Nil{%
    \edef\KVS@Temp{\the\toks@}%
    \ifx\KVS@Temp\KVS@Empty
      \expandafter\KVS@FirstOfTwo
    \else
      \expandafter\KVS@SecondOfTwo
    \fi
    {%
      \toks@{#1}%
    }{%
      \toks@\expandafter{\the\toks@=#1}%
    }%
    \KVS@IfEmpty{#2}{%
    }{%
      \KVS@@Equals#2\KVS@Nil
    }%
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@SpaceEquals}
%    Removes spaces before the equals sign.
%    \begin{macrocode}
\long\def\KVS@SpaceEquals#1{%
  \expandafter\KVS@@SpaceEquals\the\toks@#1=\KVS@Nil
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@@SpaceEquals}
%    \begin{macrocode}
\long\def\KVS@@SpaceEquals#1 =#2\KVS@Nil{%
  \KVS@IfEmpty{#2}{%
    \toks@{#1}%
  }{%
    \toks@{#1=#2}%
    \expandafter\KVS@@SpaceEquals\the\toks@\KVS@Nil
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@EqualsSpace}
%    Removes spaces after the equals sign.
%    \begin{macrocode}
\def\KVS@EqualsSpace{%
  \expandafter\KVS@@EqualsSpace\the\toks@= \KVS@Nil
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@@EqualsSpace}
%    \begin{macrocode}
\long\def\KVS@@EqualsSpace#1= #2\KVS@Nil{%
  \KVS@IfEmpty{#2}{%
    \toks@{#1}%
  }{%
    \toks@{#1=#2}%
    \expandafter\KVS@@EqualsSpace\the\toks@\KVS@Nil
  }%
}
%    \end{macrocode}
%    \end{macro}
%
% \subsection{Parsing key value lists}
%
%    \begin{macro}{\kv@parse}
%    Normalizes and parses the key value list. Also sets \cs{kv@list}.
%    \begin{macrocode}
\long\def\kv@parse#1{%
  \kv@normalize{#1}%
  \expandafter\kv@parse@normalized\expandafter{\kv@list}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\kv@parse@normalized}
%    |#1|: key value list\\
%    |#2|: processor
%    \begin{macrocode}
\long\def\kv@parse@normalized#1#2{%
  \KVS@Parse#1,\KVS@Nil{#2}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@Parse}
%    |#1,#2|: key value list\\
%    |#3|: processor
%    \begin{macrocode}
\long\def\KVS@Parse#1,#2\KVS@Nil#3{%
  \KVS@IfEmpty{#1}{%
  }{%
    \KVS@Process#1=\KVS@Nil{#3}%
  }%
  \KVS@IfEmpty{#2}{%
  }{%
    \KVS@Parse#2\KVS@Nil{#3}%
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@Process}
%    |#1|: key\\
%    |#2|: value, |=|\\
%    |#3|: processor
%    \begin{macrocode}
\long\def\KVS@Process#1=#2\KVS@Nil#3{%
  \def\kv@key{#1}%
  \KVS@IfEmpty{#2}{%
    \let\kv@value\relax
    #3{#1}{}%
  }{%
    \KVS@@Process{#1}#2\KVS@Nil{#3}%
  }%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@@Process}
%    |#1|: key\\
%    |#2|: value\\
%    |#3|: processor
%    \begin{macrocode}
\long\def\KVS@@Process#1#2=\KVS@Nil#3{%
& \edef\kv@value{\etex@unexpanded{#2}}%
$ \begingroup
$   \toks@{#2}%
$   \xdef\KVS@Global{\the\toks@}%
$ \endgroup
$ \let\kv@value\KVS@Global
  #3{#1}{#2}%
}
%    \end{macrocode}
%    \end{macro}
%
% \subsection{Parsing comma lists}
%
%    \begin{macro}{\comma@parse}
%    Normalizes and parses the key value list. Also sets \cs{comma@list}.
%    \begin{macrocode}
\def\comma@parse#1{%
  \comma@normalize{#1}%
  \expandafter\comma@parse@normalized\expandafter{\comma@list}%
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\comma@parse@normalized}
%    |#1|: comma list\\
%    |#2|: processor
%    \begin{macrocode}
\def\comma@parse@normalized#1#2{%
  \KVS@CommaParse#1,\KVS@Nil{#2}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@CommaParse}
%    |#1,#2|: comma list\\
%    |#3|: processor
%    \begin{macrocode}
\def\KVS@CommaParse#1,#2\KVS@Nil#3{%
  \KVS@IfEmpty{#1}{%
  }{%
    \def\comma@entry{#1}%
    #3{#1}%
  }%
  \KVS@IfEmpty{#2}{%
  }{%
    \KVS@CommaParse#2\KVS@Nil{#3}%
  }%
}
%    \end{macrocode}
%    \end{macro}
%
% \subsection{Processing key value pairs}
%
%    \begin{macro}{\kv@processor@default}
%    \begin{macrocode}
\long\def\kv@processor@default#1#2#3{%
& \unless\ifcsname KV@#1@#2\endcsname
$ \begingroup\expandafter\expandafter\expandafter\endgroup
$ \expandafter\ifx\csname KV@#1@#2\endcsname\relax
&   \unless\ifcsname KVS@#1@handler\endcsname
$   \begingroup\expandafter\expandafter\expandafter\endgroup
$   \expandafter\ifx\csname KVS@#1@handler\endcsname\relax
      \kv@error@unknownkey{#1}{#2}%
    \else
      \csname KVS@#1@handler\endcsname{#2}{#3}%
      \relax
    \fi
  \else
    \ifx\kv@value\relax
&     \unless\ifcsname KV@#1@#2@default\endcsname
$     \begingroup\expandafter\expandafter\expandafter\endgroup
$     \expandafter\ifx\csname KV@#1@#2@default\endcsname\relax
        \kv@error@novalue{#1}{#2}%
      \else
        \csname KV@#1@#2@default\endcsname
        \relax
      \fi
    \else
      \csname KV@#1@#2\endcsname{#3}%
    \fi
  \fi
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macro}{\kv@set@family@handler}
%    \begin{macrocode}
\def\kv@set@family@handler#1{%
  \KVS@SetFamilyHandler{#1}\@nil
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\KVS@SetFamilyHandler}
%    \begin{macrocode}
\def\KVS@SetFamilyHandler#1\@nil#{%
  \expandafter\def\csname KVS@#1@handler\endcsname##1##2%
}
%    \end{macrocode}
%    \end{macro}
%
% \subsection{Error handling}
%
%    \begin{macro}{\kv@error@novalue}
%    \begin{macrocode}
\def\kv@error@novalue{%
  \kv@error@generic{No value specified for}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\kv@error@unknownkey}
%    \begin{macrocode}
\def\kv@error@unknownkey{%
  \kv@error@generic{Undefined}%
}
%    \end{macrocode}
%    \end{macro}
%    \begin{macro}{\kv@error@generic}
%    \begin{macrocode}
\def\kv@error@generic#1#2#3{%
  \@PackageError{kvsetkeys}{%
    #1 key `#3'%
  }{%
    The keyval family of the key `#3' is `#2'.\MessageBreak
    \MessageBreak
    \@ehc
  }%
}
%    \end{macrocode}
%    \end{macro}
%
% \subsection{Do it all}
%
%    \begin{macro}{\kvsetkeys}
%    \begin{macrocode}
\long\def\kvsetkeys#1#2{%
  \kv@parse{#2}{\kv@processor@default{#1}}%
}
%    \end{macrocode}
%    \end{macro}
%
%    \begin{macrocode}
\KVS@AtEnd
%</package>
%    \end{macrocode}
%
% \section{Test}
%
% \subsection{Catcode checks for loading}
%
%    \begin{macrocode}
%<*test1>
%    \end{macrocode}
%    \begin{macrocode}
\catcode`\{=1 %
\catcode`\}=2 %
\catcode`\#=6 %
\catcode`\@=11 %
\expandafter\ifx\csname count@\endcsname\relax
  \countdef\count@=255 %
\fi
\expandafter\ifx\csname @gobble\endcsname\relax
  \long\def\@gobble#1{}%
\fi
\expandafter\ifx\csname @firstofone\endcsname\relax
  \long\def\@firstofone#1{#1}%
\fi
\expandafter\ifx\csname loop\endcsname\relax
  \expandafter\@firstofone
\else
  \expandafter\@gobble
\fi
{%
  \def\loop#1\repeat{%
    \def\body{#1}%
    \iterate
  }%
  \def\iterate{%
    \body
      \let\next\iterate
    \else
      \let\next\relax
    \fi
    \next
  }%
  \let\repeat=\fi
}%
\def\RestoreCatcodes{}
\count@=0 %
\loop
  \edef\RestoreCatcodes{%
    \RestoreCatcodes
    \catcode\the\count@=\the\catcode\count@\relax
  }%
\ifnum\count@<255 %
  \advance\count@ 1 %
\repeat

\def\RangeCatcodeInvalid#1#2{%
  \count@=#1\relax
  \loop
    \catcode\count@=15 %
  \ifnum\count@<#2\relax
    \advance\count@ 1 %
  \repeat
}
\expandafter\ifx\csname LoadCommand\endcsname\relax
  \def\LoadCommand{\input kvsetkeys.sty\relax}%
\fi
\def\Test{%
  \RangeCatcodeInvalid{0}{47}%
  \RangeCatcodeInvalid{58}{64}%
  \RangeCatcodeInvalid{91}{96}%
  \RangeCatcodeInvalid{123}{255}%
  \catcode`\@=12 %
  \catcode`\\=0 %
  \catcode`\{=1 %
  \catcode`\}=2 %
  \catcode`\#=6 %
  \catcode`\[=12 %
  \catcode`\]=12 %
  \catcode`\%=14 %
  \catcode`\ =10 %
  \catcode13=5 %
  \LoadCommand
  \RestoreCatcodes
}
\Test
\csname @@end\endcsname
\end
%    \end{macrocode}
%    \begin{macrocode}
%</test1>
%    \end{macrocode}
%
% \subsection{Macro tests}
%
% \subsubsection{Preamble}
%
%    \begin{macrocode}
%<*test2>
\NeedsTeXFormat{LaTeX2e}
\nofiles
\documentclass{article}
%<noetex>\let\SavedUnexpanded\unexpanded
%<noetex>\let\unexpanded\UNDEFINED
\makeatletter
\chardef\KVS@TestMode=1 %
\makeatother
\usepackage{kvsetkeys}[2010/03/01]
%<noetex>\let\unexpanded\SavedUnexpanded
\usepackage{qstest}
\IncludeTests{*}
\LogTests{log}{*}{*}
%    \end{macrocode}
%
% \subsubsection{Time}
%
%    \begin{macrocode}
\begingroup\expandafter\expandafter\expandafter\endgroup
\expandafter\ifx\csname pdfresettimer\endcsname\relax
\else
  \makeatletter
  \newcount\SummaryTime
  \newcount\TestTime
  \SummaryTime=\z@
  \newcommand*{\PrintTime}[2]{%
    \typeout{%
      [Time #1: \strip@pt\dimexpr\number#2sp\relax\space s]%
    }%
  }%
  \newcommand*{\StartTime}[1]{%
    \renewcommand*{\TimeDescription}{#1}%
    \pdfresettimer
  }%
  \newcommand*{\TimeDescription}{}%
  \newcommand*{\StopTime}{%
    \TestTime=\pdfelapsedtime
    \global\advance\SummaryTime\TestTime
    \PrintTime\TimeDescription\TestTime
  }%
  \let\saved@qstest\qstest
  \let\saved@endqstest\endqstest
  \def\qstest#1#2{%
    \saved@qstest{#1}{#2}%
    \StartTime{#1}%
  }%
  \def\endqstest{%
    \StopTime
    \saved@endqstest
  }%
  \AtEndDocument{%
    \PrintTime{summary}\SummaryTime
  }%
  \makeatother
\fi
%    \end{macrocode}
%
% \subsubsection{Test sets}
%
%    \begin{macrocode}
\makeatletter
\def\@makeactive#1{%
  \catcode`#1=13\relax
}
\@makeactive\,
\def,{\errmessage{COMMA}}
\@makeother\,
\@makeactive\=
\def={\errmessage{EQUALS}}
\@makeother\=

\begin{qstest}{normalize}{normalize,active-chars,space-removal}%
  \long\def\Test#1#2{%
    \@makeother\,%
    \@makeother\=%
    \scantokens{\toks@={#2}}%
    \edef\Result{\the\toks@}%
    \@makeother\,%
    \@makeother\=%
    \@Test{#1}%
    \@makeactive\,%
    \@Test{#1}%
    \@makeactive\=%
    \@Test{#1}%
    \@makeother\,%
    \@Test{#1}%
    \@makeother\=%
  }%
  \long\def\@Test#1{%
    \scantokens{\kv@normalize{#1}}%
    \expandafter\expandafter\expandafter\Expect
    \expandafter\expandafter\expandafter
    {\expandafter\kv@list\expandafter}\expandafter{\Result}%
    \Expect*{\ifx\kv@list\Result true\else false\fi}{true}%
  }%
  \Test{}{,}%
  \Test{,}{,}%
  \Test{,,}{,}%
  \Test{,,,}{,}%
  \Test{ , }{,}%
  \Test{{a}}{,{a},}%
  \Test{,{a}}{,{a},}%
  \Test{{a},}{,{a},}%
  \Test{{a},{b}}{,{a},{b},}%
  \Test{{b}={c},{}=,{}={},{d}=}{,{b}={c},{}=,{}={},{d}=,}%
  \Test{{}}{,{},}%
  \Test{{},{},{}}{,{},{},{},}%
  \Test{=}{,=,}%
  \Test{=,=,=}{,=,=,=,}%
  \Test{a=\par}{,a=\par,}%
  \Test{\par}{,\par,}%
  \def\TestSet#1{%
    \Test{#1#1}{,}%
    \Test{#1#1,#1#1}{,}%
    \Test{#1#1,#1#1,#1#1}{,}%
    \Test{#1#1#1#1#1}{,}%
    \Test{{a}#1#1=#1#1{b}}{,{a}={b},}%
  }%
  \TestSet{ }%
  \begingroup
    \let\saved@normalize\kv@normalize
    \def\kv@normalize#1{%
      \saved@normalize{#1}%
      \@onelevel@sanitize\kv@list
      \@onelevel@sanitize\Result
    }%
    \Test{#,#=#,{#}={#},{#}=,{#}}{,#,#=#,{#}={#},{#}=,{#},}%
  \endgroup
  \begingroup
    \def\Test#1#2{%
      \edef\Result{#2}%
      \@Test{#1}%
    }%
    \Test{{ a = b }}{,{ a = b },}%
    \@makeactive\,%
    \Test{{,}}{\string,{\noexpand,}\string,}%
    \@makeother\,%
    \@makeactive\=%
    \Test{a={=}}{,a\string={\noexpand=},}%
  \endgroup
  \Test{a=b}{,a=b,}%
  \Test{a={b}}{,a={b},}%
  \Test{a ={b}}{,a={b},}%
  \Test{a= {b}}{,a={b},}%
  \Test{a = {b}}{,a={b},}%
  \Test{a = {b} ,}{,a={b},}%
  \Test{a}{,a,}%
  \Test{ a}{,a,}%
  \Test{a }{,a,}%
  \Test{ a }{,a,}%
  \Test{, a ,}{,a,}%
  \Test{, a b ,}{,a b,}%
  \Test{,a ,}{,a,}%
  \Test{ a =}{,a=,}%
  \Test{ a = }{,a=,}%
  \Test{a =}{,a=,}%
  \Test{{a} =}{,{a}=,}%
  \Test{{a}= {}}{,{a}={},}%
  \Test{, a = {}}{,a={},}%
  \Test{a,,b}{,a,b,}%
  \Test{a=\fi}{,a=\fi,}%
  \Test{a=\iffalse}{,a=\iffalse,}%
  \Test{a=\iffalse,b=\fi}{,a=\iffalse,b=\fi,}%
\end{qstest}

\begin{qstest}{parse}{parse,brace-removal}
  \def\Processor#1#2{%
    \expandafter\Expect\expandafter{\kv@key}{#1}%
    \toks@{#2}%
    \edef\x{\the\toks@}%
    \ifx\kv@value\relax
      \Expect*{\the\toks@}{}%
      \def\Value{<>}%
    \else
      \edef\Value{[\the\toks@]}%
      \@onelevel@sanitize\Value
    \fi
    \toks@{#1}%
    \ifx\Result\@empty
      \edef\Result{[\the\toks@]=\Value}%
    \else
      \edef\Result{\Result,[\the\toks@]=\Value}%
    \fi
    \@onelevel@sanitize\Result
  }%
  \def\Test#1#2{%
    \sbox0{%
      \let\Result\@empty
      \kv@parse{#1}\Processor
      \Expect*{\Result}{#2}%
    }%
    \Expect*{\the\wd0}{0.0pt}%
  }%
  \Test{}{}%
  \Test{{}}{}%
  \Test{{{}}}{[]=<>}%
  \Test{{{{}}}}{[{}]=<>}%
  \Test{a}{[a]=<>}%
  \Test{{a}}{[a]=<>}%
  \Test{{a}}{[a]=<>}%
  \Test{{{a}}}{[a]=<>}%
  \Test{{{{a}}}}{[{a}]=<>}%
  \Test{a=}{[a]=[]}%
  \Test{{a}=}{[a]=[]}%
  \Test{{{a}}=}{[{a}]=[]}%
  \Test{a={}}{[a]=[]}%
  \Test{{a}={{}}}{[a]=[{}]}%
  \Test{a=b}{[a]=[b]}%
  \Test{a=\fi}{[a]=[\fi]}%
  \Test{a=\iffalse}{[a]=[\iffalse]}%
  \Test{a=\iffalse,b=\fi}{[a]=[\iffalse],[b]=[\fi]}%
  \Test{{ a = b }}{[ a ]=[ b ]}%
  \Test{{{ a = b }}}{[ a = b ]=<>}%
\end{qstest}

\begin{qstest}{comma}{comma,parse}
  \def\Processor#1{%
    \expandafter\Expect\expandafter{\comma@entry}{#1}%
    \toks@{#1}%
    \ifx\Result\@empty
      \edef\Result{[\the\toks@]}%
    \else
      \edef\Result{\Result,[\the\toks@]}%
    \fi
    \@onelevel@sanitize\Result
  }%
  \def\Test#1#2{%
    \sbox0{%
      \let\Result\@empty
      \comma@parse{#1}\Processor
      \Expect*{\Result}{#2}%
    }%
    \Expect*{\the\wd0}{0.0pt}%
  }%
  \Test{}{}%
  \Test{{}}{}%
  \Test{{{}}}{[{}]}%
  \Test{a}{[a]}%
  \Test{{a}}{[a]}%
  \Test{{{a}}}{[{a}]}%
  \Test{a=}{[a=]}%
  \Test{a\fi}{[a\fi]}%
  \Test{a\iffalse}{[a\iffalse]}%
  \Test{\iffalse,\fi}{[\iffalse],[\fi]}%
  \Test{ a , b , c }{[a],[b],[c]}%
  \Test{ { } ,{ }, { }, { } , { } }{[ ],[ ],[ ],[ ],[ ]}%
  \Test{ {{}} ,{{}}, {{}}, {{}} , {{}} }{[{}],[{}],[{}],[{}],[{}]}%
\end{qstest}

\begin{document}
\end{document}
%</test2>
%    \end{macrocode}
%
% \section{Installation}
%
% \subsection{Download}
%
% \paragraph{Package.} This package is available on
% CTAN\footnote{\url{ftp://ftp.ctan.org/tex-archive/}}:
% \begin{description}
% \item[\CTAN{macros/latex/contrib/oberdiek/kvsetkeys.dtx}] The source file.
% \item[\CTAN{macros/latex/contrib/oberdiek/kvsetkeys.pdf}] Documentation.
% \end{description}
%
%
% \paragraph{Bundle.} All the packages of the bundle `oberdiek'
% are also available in a TDS compliant ZIP archive. There
% the packages are already unpacked and the documentation files
% are generated. The files and directories obey the TDS standard.
% \begin{description}
% \item[\CTAN{install/macros/latex/contrib/oberdiek.tds.zip}]
% \end{description}
% \emph{TDS} refers to the standard ``A Directory Structure
% for \TeX\ Files'' (\CTAN{tds/tds.pdf}). Directories
% with \xfile{texmf} in their name are usually organized this way.
%
% \subsection{Bundle installation}
%
% \paragraph{Unpacking.} Unpack the \xfile{oberdiek.tds.zip} in the
% TDS tree (also known as \xfile{texmf} tree) of your choice.
% Example (linux):
% \begin{quote}
%   |unzip oberdiek.tds.zip -d ~/texmf|
% \end{quote}
%
% \paragraph{Script installation.}
% Check the directory \xfile{TDS:scripts/oberdiek/} for
% scripts that need further installation steps.
% Package \xpackage{attachfile2} comes with the Perl script
% \xfile{pdfatfi.pl} that should be installed in such a way
% that it can be called as \texttt{pdfatfi}.
% Example (linux):
% \begin{quote}
%   |chmod +x scripts/oberdiek/pdfatfi.pl|\\
%   |cp scripts/oberdiek/pdfatfi.pl /usr/local/bin/|
% \end{quote}
%
% \subsection{Package installation}
%
% \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 kvsetkeys.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}
% \def\t{^^A
% \begin{tabular}{@{}>{\ttfamily}l@{ $\rightarrow$ }>{\ttfamily}l@{}}
%   kvsetkeys.sty & tex/generic/oberdiek/kvsetkeys.sty\\
%   kvsetkeys.pdf & doc/latex/oberdiek/kvsetkeys.pdf\\
%   kvsetkeys-example.tex & doc/latex/oberdiek/kvsetkeys-example.tex\\
%   test/kvsetkeys-test1.tex & doc/latex/oberdiek/test/kvsetkeys-test1.tex\\
%   test/kvsetkeys-test2.tex & doc/latex/oberdiek/test/kvsetkeys-test2.tex\\
%   test/kvsetkeys-test3.tex & doc/latex/oberdiek/test/kvsetkeys-test3.tex\\
%   kvsetkeys.dtx & source/latex/oberdiek/kvsetkeys.dtx\\
% \end{tabular}^^A
% }^^A
% \sbox0{\t}^^A
% \ifdim\wd0>\linewidth
%   \begingroup
%     \advance\linewidth by\leftmargin
%     \advance\linewidth by\rightmargin
%   \edef\x{\endgroup
%     \def\noexpand\lw{\the\linewidth}^^A
%   }\x
%   \def\lwbox{^^A
%     \leavevmode
%     \hbox to \linewidth{^^A
%       \kern-\leftmargin\relax
%       \hss
%       \usebox0
%       \hss
%       \kern-\rightmargin\relax
%     }^^A
%   }^^A
%   \ifdim\wd0>\lw
%     \sbox0{\small\t}^^A
%     \ifdim\wd0>\linewidth
%       \ifdim\wd0>\lw
%         \sbox0{\footnotesize\t}^^A
%         \ifdim\wd0>\linewidth
%           \ifdim\wd0>\lw
%             \sbox0{\scriptsize\t}^^A
%             \ifdim\wd0>\linewidth
%               \ifdim\wd0>\lw
%                 \sbox0{\tiny\t}^^A
%                 \ifdim\wd0>\linewidth
%                   \lwbox
%                 \else
%                   \usebox0
%                 \fi
%               \else
%                 \lwbox
%               \fi
%             \else
%               \usebox0
%             \fi
%           \else
%             \lwbox
%           \fi
%         \else
%           \usebox0
%         \fi
%       \else
%         \lwbox
%       \fi
%     \else
%       \usebox0
%     \fi
%   \else
%     \lwbox
%   \fi
% \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.
%
% \subsection{Refresh file name databases}
%
% If your \TeX~distribution
% (\teTeX, \mikTeX, \dots) relies on file name 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 kvsetkeys.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 intention:
% \begin{quote}
%   \verb|latex \let\install=y\input{kvsetkeys.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 kvsetkeys.dtx
%makeindex -s gind.ist kvsetkeys.idx
%pdflatex kvsetkeys.dtx
%makeindex -s gind.ist kvsetkeys.idx
%pdflatex kvsetkeys.dtx
%\end{verbatim}
% \end{quote}
%
% \begin{thebibliography}{9}
% \bibitem{tb94wright}
%   A guide to key-value methods, Joseph Wright, second draft for
%   \href{http://www.tug.org/tugboat}{TUGBoat}, 2009-03-17.
%   \url{http://www.texdev.net/wp-content/uploads/2009/03/keyval.pdf}
% 
% \bibitem{keyval}
%   David Carlisle:
%   \textit{The \xpackage{keyval} package};
%   1999/03/16 v1.13;
%   \CTAN{macros/latex/required/graphics/keyval.dtx}.
% 
% \end{thebibliography}
%
% \begin{History}
%   \begin{Version}{2006/03/06 v1.0}
%   \item
%     First version.
%   \end{Version}
%   \begin{Version}{2006/10/19 v1.1}
%   \item
%     Fix of \cs{kv@set@family@handler}.
%   \item
%     Example added.
%   \end{Version}
%   \begin{Version}{2007/09/09 v1.2}
%   \item
%     Using package \xpackage{infwarerr} for error messages.
%   \item
%     Catcode section rewritten.
%   \end{Version}
%   \begin{Version}{2007/09/29 v1.3}
%   \item
%     Normalizing and parsing of comma separated lists added.
%   \item
%     \cs{kv@normalize} rewritten.
%   \item
%     Robustness increased for normalizing and parsing,
%     e.g. for values with unmatched conditionals.
%   \item
%     \eTeX\ is used if available.
%   \item
%     Tests added for normalizing and parsing.
%   \end{Version}
%   \begin{Version}{2009/07/19 v1.4}
%   \item
%     Bug fix for \cs{kv@normalize}: unwanted space removed (Florent Chervet).
%   \end{Version}
%   \begin{Version}{2009/07/30 v1.5}
%   \item
%     Documentation addition: recommendation for Joseph Wright's
%     review article.
%   \end{Version}
%   \begin{Version}{2009/12/12 v1.6}
%   \item
%     Short info shortened.
%   \end{Version}
%   \begin{Version}{2009/12/22 v1.7}
%   \item
%     Internal optimization (\cs{KVS@CommaSpace}, \dots, \cs{KVS@EqualsSpace}).
%   \end{Version}
%   \begin{Version}{2010/01/28 v1.8}
%   \item
%     Compatibility to ini\TeX\ added.
%   \end{Version}
%   \begin{Version}{2010/03/01 v1.9}
%   \item
%     Support of \cs{par} inside values.
%   \end{Version}
% \end{History}
%
% \PrintIndex
%
% \Finale
\endinput