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% \iffalse meta-comment
% linegoal : 2010/11/19 v2.2 - linegoal : a new dimen corresponding to the remainder of the line]
%
% 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
%
% This work consists of the main source file linegoal.dtx
% and the derived files
%    linegoal.sty, linegoal.pdf, linegoal.ins
%
% Unpacking:
%    (a) If linegoal.ins is present:
%           etex linegoal.ins
%    (b) Without linegoal.ins:
%           etex linegoal.dtx
%    (c) If you insist on using LaTeX
%           latex \let\install=y\input{linegoal.dtx}
%        (quote the arguments according to the demands of your shell)
%
% Documentation:
%           (pdf)latex linegoal.dtx
% Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>
%<*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
\tracingall \tracingonline=0
\Msg{************************************************************************}
\Msg{* Installation}
\Msg{* Package: 2010/11/19 v2.2 - linegoal : a new dimen corresponding to the remainder of the line}
\Msg{************************************************************************}

\keepsilent
\askforoverwritefalse

\let\MetaPrefix\relax
\preamble

This is a generated file.

linegoal : 2010/11/19 v2.2 - linegoal : a new dimen corresponding to the remainder of the line

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

This work consists of the main source file linegoal.dtx
and the derived files
   linegoal.sty, linegoal.pdf, linegoal.ins

linegoal : linegoal : a new dimen corresponding to the remainder of the line
Copyright (C) 2010 by Florent Chervet <florent.chervet@free.fr>

\endpreamble
\let\MetaPrefix\DoubleperCent

\generate{%
   \file{linegoal.ins}{\from{linegoal.dtx}{install}}%
   \file{linegoal.sty}{\from{linegoal.dtx}{package}}%
   \file{linegoal.tex}{\from{linegoal.dtx}{example}}%
}

\askforoverwritefalse
\generate{%
   \file{linegoal.drv}{\from{linegoal.dtx}{driver}}%
}

\obeyspaces
\Msg{************************************************************************}
\Msg{*}
\Msg{* To finish the installation you have to move the following}
\Msg{* file into a directory searched by TeX:}
\Msg{*}
\Msg{*     linegoal.sty}
\Msg{*}
\Msg{* To produce the documentation run the file `linegoal.dtx'}
\Msg{* through LaTeX.}
\Msg{*}
\Msg{* Happy TeXing!}
\Msg{*}
\Msg{************************************************************************}

\endbatchfile
%</install>
%<*ignore>
\fi
%</ignore>
%<*driver>
\edef\thisfile{\jobname}
\def\thisinfo{A new ``dimen'' corresponding to the remainder of the line}
\def\thisdate{2010/11/19}
\def\thisversion{2.2}
\def\CTANbaseurl{http://www.ctan.org/tex-archive/macros/latex}
\def\CTANdisplay{CTAN:macros/latex}
\makeatletter\protected\def\CTANhref{\@ifstar\CTANhrefstar\CTANhrefnost}\makeatother
\newcommand*\CTANhrefstar[3][/contrib/]{\href{\CTANbaseurl#1#2}{#3}}
\newcommand*\CTANhrefnost[2][/contrib/]{\href{\CTANbaseurl#1#2}{\nolinkurl{\CTANdisplay#1#2}}}
\let\loadclass\LoadClass
\def\LoadClass#1{\loadclass[abstracton]{scrartcl}\let\scrmaketitle\maketitle\AtEndOfClass{\let\maketitle\scrmaketitle}}
\PassOptionsToPackage{svgnames}{xcolor}
\documentclass[a4paper,oneside,american,latin1,T1]{ltxdoc}
\AtBeginDocument{\DeleteShortVerb{\|}}
\usepackage{inputenc,babel}
\usepackage[T1]{fontenc}
\usepackage{etoolbox,geometry,xcolor,bbding,txfonts,xspace,hologo,graphicx}
\usepackage{lastpage,fancyhdr,enumitem,framed,tocloft,tabu,multirow,makecell,tabularx}
\usepackage{embedfile}
\usepackage{interfaces}
\csname endofdump\endcsname
\CodelineNumbered\lastlinefit999
\usepackage{holtxdoc,bookmark}
\usepackage{linegoal}
\usepackage{fancyvrb}\fvset{gobble=1,listparameters={\topsep=0pt}}
\hypersetup{%
  pdftitle={The linegoal package},
  pdfsubject={A new dimen corresponding to the remainder of the line},
  pdfauthor={Florent CHERVET},
  colorlinks,linkcolor=reflink,
  pdfstartview=FitH,
  pdfkeywords={TeX, LaTeX, e-TeX, pdfTeX, package, zref, linegoal}}
\embedfile{\thisfile.dtx}
\geometry{top=0pt,headheight=.6cm,includehead,headsep=.6cm,bottom=1.4cm,footskip=.5cm,left=2.5cm,right=1cm}
\begin{document}
   \DocInput{\thisfile.dtx}
\end{document}
%</driver>
% \fi
%
% \CheckSum{141}
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%  head/right=\thisinfo,
%  foot/left=\vbox to\baselineskip{\vss{{\rotatebox[origin=l]{90}{\thispackage\,[rev.\thisversion]\,\copyright\,\thisyear\,\lower.4ex\hbox{\pkgcolor\NibRight}\,\FC}}}},
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%  }
% \pagestyle{fancy}
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%     norules,font=\scriptsize,
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%     foot/right/font=\scriptsize\color[gray]{.55},
%     foot/right=\oldstylenums{\arabic{page}}/\oldstylenums{\pageref{LastPage}},
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% }
% \bookmarksetup{openlevel=3}
% \makeatother
%
% \deffootnote{1em}{0pt}{\rlap{\textsuperscript{\thefootnotemark}}\kern1em}
% \title{\vspace*{-28pt}\mdseries The {\bfseries\thispackage\footnotemark}\kern.6em package}
% \author{\small\thisdate~--~version \thisversion}
% \date{}
% \subtitle{\LARGE A new ``dimen'' corresponding to the remainder of the line\endgraf{\small\FC}}
% \maketitle
%
% \makeatletter\begingroup\let\@thefnmark\@empty\let\@makefntext\@firstofone
% \footnotetext{\noindent
% This documentation is produced with the +DocStrip+ utility.
% \begin{tabbing}
% \qquad\=\smex\=To get the documentation, \= run (thrice):\quad\= \textt{pdflatex \thisfile.dtx} \\
% \qquad\>\>To get the index, \> run:\>\texttt{makeindex -s gind.ist \thisfile.idx} \\
% \>\smex\>To get the package, \> run:\>        \texttt{etex \thisfile.dtx}
% \end{tabbing}§
% The \xext{dtx} file is embedded into this pdf file thank to \xpackage{embedfile} by H. Oberdiek.}
% \endgroup\makeatother
%
% \deffootnote{1em}{0pt}{\rlap{\thefootnotemark.}\kern1em}
% {\vspace*{-16pt}\let\quotation\relax
% \begin{abstract}\parskip\medskipamount\parindent0pt\lastlinefit0\relax\rightskip1.5cm\leftskip\rightskip\advance\linewidth by-2\leftskip
%
% \thispackage provides a macro \csbf{linegoal} which expands to the dimension of the remainder of the line.
% It requires \hologo{pdfTeX} for its \cs{pdfsavepos} primitive. With \hologo{pdfTeX}, \cs{pdfsavepos} works
% in \textt{pdf} mode (\cs{pdfoutput}>0) \textbf{and also in} \textt{dvi} mode (\cs{pdfoutput}=0).
% Two compilations (at least) are necessary to get the correct line goal.§
% {\centering\extrarowheight\parskip
% \begin{tabular}{ll}
% Saying:       &\Verb+\somedimen = \linegoal+            \\
% or:           &\Verb+\setlength \somedimen {\linegoal}+
% \end{tabular}\par}
%
% sets \cs{somedimen} to be the (horizontal) length of the remainder of the current line. This can be useful for
% use with \textt{tabularx},\, \textt{tabular\stform*}\, or\, \textt{tabu}\, for example.§
% {\centering\extrarowheight\parskip
% \begin{tabu} to\linewidth{@{}lX}
% At first run:  &\cs{linegoal} expands to \cs{linewidth} and writes the correct line goal into the \xext{aux} file.                                      \\
% Other runs:    &\cs{linegoal} expands to the value read in the \xext{aux} file and (eventually) updates the
%                  correct line-goal into the \xext{aux} file, if the value has changed.
% \end{tabu}\par}
%
% \thispackage requires pdf\TeX{} (in \textt{pdf} or \textt{dvi} mode) and the module \xpackage{zref-savepos} of \Xpackage[/oberdiek/]{zref} package.
%
% \end{abstract}
%
% \tocsetup{%
%  section/skip=4pt plus2pt minus2pt,
%  subsection/skip=0pt plus2pt minus2pt,
%  section/dotsep,
%  dotsep=1.5mu,
%  dot=\hbox{\scriptsize.},
%  title=Contents\quad\leaders\vrule height3.4pt depth-3pt\hfill\null,
%  title/bottom=6pt,
%  after=\leavevmode\hrule,
%  }
%
% \tableofcontents
%
% \ClearPage*
%
% \section{User interface}
% \label{userinterface}
%
% The first aim of \cs{linegoal} is to give a facility to get the length of the remainder of the line.
% This is possible with \hologo{pdfTeX} and its \cs{pdfsavepos} primitive. For convenience, \thispackage loads
% and uses the \xpackage{zref-savepos} package from H. Oberdiek.
%
% \cs{pdfsavepos} is supplied by \hologo{pdfTeX} in both \textt{pdf} and \textt{dvi} modes. If the document
% is not compiled with \hologo{pdfTeX} then \cs{linegoal} will expand to \cs{linewidth} in any case.
%
% \begin{VerbLines}
% This is a tabularx that fills the remainder of the line:
%     \begin{tabularx}\linegoal{|l|X|}\hline
%        Something & Something else \\
%        Something & Something else \\\hline
%     \end{tabularx}
% \end{VerbLines}
%
% \textbf{Typical application is for tabular of variable width} like \xpackage{tabularx} or \xpackage{tabu}.
% Package \xpackage{tabu} has a \textt{linegoal} option to use \cs{linegoal} as default target for the whole
% tabular.
%
%
% This is a \textt{tabularx} that fills the remainder of the line:
% \begin{tabularx}\linegoal{|l|X|}\hline
%  Something & Something else \\
%  Something & Something else \\\hline
% \end{tabularx}
%
% \begin{VerbLines}
% This is a tabu that fills the half of the remainder of the line:
%     $\begin{tabu}to .5\linegoal{|[red]X[$c]|[red]X[2$c]|[red]} \tabucline[red]-
%        \alpha & \beta    \\ \tabucline[on 2pt,red]-
%        \gamma & \delta   \\ \tabucline[red]-
%     \end{tabu}$
% \end{VerbLines}
%
% This is a \textt{tabu} that fills the half of the remainder of the line:
%     $\begin{tabu}to .5\linegoal{|[red]X[$c]|[red]X[2$c]|[red]} \tabucline[red]-
%        \alpha & \beta    \\ \tabucline[on 2pt,red]-
%        \gamma & \delta   \\ \tabucline[red]-
%     \end{tabu}$
%
% Please, refer to \xpackage{tabu} documentation for more information on the preamble and
% the command \cs{tabucline} used here as an example.
%
%
% \StopEventually{
% }
%
% \section{Implementation} \label{sec:implementation}
% \csdef{HDorg@PrintMacroName}#1{\hbox to4em{\strut \MacroFont \string #1\ \hss}}
%
% \subsection{Identification}
%
% \begin{itemize}
% \item The package namespace is \texttbf{\macrocodecolor\string\LNGL@}
% \end{itemize}
%
%    \begin{macrocode}
%<*package>
\NeedsTeXFormat{LaTeX2e}% LaTeX 2.09 can't be used (nor non-LaTeX)
   [2005/12/01]% LaTeX must be 2005/12/01 or younger
\ProvidesPackage{linegoal}
         [2010/11/19 v2.2 - A new dimen corresponding to the remainder of the line]
%    \end{macrocode}
%
% \subsection{Requirements}
%
% The package requires \xpackage{zref} and its module \xpackage{zref-savepos}.
%
% It requires \xpackage{srclfile} for a patch when using the \xpackage{calc} package.
%
%    \begin{macrocode}
\ifdefined\pdfsavepos\else % works also in dvi mode
   \PackageWarning{linegoal}
      {This package requires pdfTeX for its \string\pdfsavepos\space primitive\MessageBreak
      pdfTeX has not been detected and \string\linegoal\space will expand\MessageBreak
      to \string\linewidth\space in any case}
   \gdef\linegoal{\linewidth}%
   \expandafter\endinput
\fi
\RequirePackage{etex,zref,zref-savepos,scrlfile}
%    \end{macrocode}
%
% \subsection{zref property : page as arabic number}
%
% \subsection{The linegoal macro}
%
%\begin{macro}{\linegoal}
%    \begin{macrocode}
\newcommand*\linegoal{%
   \zref@extract{linegoal.\the\LNGL@unique}{linegoal}\LNGL@setlinegoal
}% \linegoal
\zref@newprop*{linegoal}[\linewidth]{\dimexpr
   \linewidth-\the\pdflastxpos sp
   +\ifodd\zref@extractdefault{linegoal/page.\the\LNGL@unique}{page}\c@page
      \oddsidemargin
   \else\evensidemargin
   \fi
   +1in+\hoffset
   \relax
}% linegoal zref-property
\globcount\LNGL@unique
\globdimen\LNGL@tempdim
\let\LNGL@calc@stop=\relax
\let\LNGL@calc@cleanup\relax
\AfterPackage*{calc}{%
   \let\LNGL@calc@stop=!%
   \def\LNGL@calc@cleanup!{}%
}
\def\LNGL@setlinegoal{\relax\csname LNGL@set\ifdefined\calc@next!\fi\endcsname}
\expandafter\def\csname LNGL@set!\endcsname!{!\LNGL@set}
\protected\def\LNGL@set{%
   \@bsphack
      \if@filesw
         \pdfsavepos
         \zref@refused{linegoal.\the\LNGL@unique}%
         \LNGL@tempdim\zref@extractdefault{linegoal.\the\LNGL@unique}{linegoal}\maxdimen
         \zref@labelbyprops{linegoal/page.\the\LNGL@unique}{page,posx}%
         \zref@labelbyprops{linegoal.\the\LNGL@unique}{linegoal}%
         \ifdim\zref@extract{linegoal.\the\LNGL@unique}{linegoal}=\LNGL@tempdim
         \else \expandafter\LNGL@warn%
                  \number\zref@extractdefault{linegoal/page.\the\LNGL@unique}{page}\c@page\relax
         \fi
         \global\advance\LNGL@unique\@ne
      \else\LNGL@noauxerr
      \fi
   \@esphack
}% \LNGL@set
\def\LNGL@warn#1\relax{\PackageWarning{linegoal}
   {\string\linegoal\space value on page #1
   \MessageBreak has changed since last run
   \MessageBreak Please rerun to get correct values}%
}% \LNGL@warn
\def\LNGL@noauxerr{\PackageError{linegoal}
   {\string\linegoal\space does not work if output file are disabled
   \MessageBreak please check the value of \string\if@filesw!}\@ehd
}% \LNGL@noauxerr
%</package>
%    \end{macrocode}
%\end{macro}
%
% \DeleteShortVerb{\+}
% \begin{History}
%
%   \begin{Version}{2010/11/19 v2.2}
%   \item Fix a bug when using a syntax like \textt{.5\cs{linegoal}}. \\
%         Hence a better fitting with \xpackage{tabu} package (version \textt{1.4 -- 2010/11/20}).
%   \end{Version}
%
%   \begin{Version}{2010/10/31 v2.1}
%   \item \thispackage works also without \hologo{pdfTeX}, but \cs{linegoal}
%         is replaced by \cs{linewidth} in any case. \\
%         A warning is displayed.
%   \end{Version}
%
%   \begin{Version}{2010/09/25 v2.0}
%   \item New approach: \cs{setlength} is not used anymore. \\
%         \cs{linegoal} behaves more like a real dimen. \\
%         code like: \cs{hspace}\textasteriskcentered\cs{linegoal} is now possible.
%   \end{Version}
%
%   \begin{Version}{2010/06/20 v1.2}
%   \item Modification in warning message...
%   \end{Version}
%
%   \begin{Version}{2010/06/06 v1.1}
%   \item The first release required some small corrections  !
%   \end{Version}
%
%   \begin{Version}{2010/05/07 v1.0}
%   \item First version.
%   \end{Version}
%
% \end{History}
%
% \begin{thebibliography}{9}
%
% \bibitem{zref}
%   Heiko Oberdiek:
%   \textit{The \xpackage{zref} package};
%   2010/05/01 v2.17;
%   \CTAN{macros/latex/contrib/oberdiek/}.
%
% \end{thebibliography}
%
% \PrintIndex
%
% \Finale