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%%
%% This is file `flushend.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% flushend.dtx  (with options: `package')
%% 
%% Copyright (C) 1997-2012 by Sigitas Tolu\v{s}is <sigitas@vtex.lt>
%% VTeX Ltd., Akademijos 4, Vilnius, Lithuania
%% http://www.vtex.lt/tex/download/macros/
%% --------------------------------------------------------------------------
%% 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.
%%
%% PURPOSE:   Balanced columns on last page in twocolumn mode.
%%
\NeedsTeXFormat{LaTeX2e}[1999/12/01]
\ProvidesPackage{flushend}
    [2012/05/29 v1.1 Balancing columns at last page]
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{flushend}[1997/10/01]
\newbox\@aaa
\newbox\@ccc
\@ifundefined{@viper}{\newbox\@viper}{}
\@ifundefined{hold@viper}{\newbox\hold@viper}{}
\newtoks\atColsBreak \atColsBreak={}
\newdimen\@extra@skip \@extra@skip\z@
\newdimen\@nd@page@rule \@nd@page@rule\z@
\def\last@outputdblcol{%
  \if@firstcolumn
    \global \@firstcolumnfalse
    \global \setbox\@leftcolumn \box\@outputbox
  \else
    \global \@firstcolumntrue
    \if@lastpage
      \@tempdima\ht\@leftcolumn
      \splittopskip\topskip\splitmaxdepth\maxdepth
      \setbox\@tempboxa\vbox{%
        \unvbox\@leftcolumn\setbox0\lastbox\unskip
        \the\atColsBreak
        \unvbox\@outputbox\setbox0\lastbox\unskip
        }%
      \@tempdimb .5\ht\@tempboxa
      \loop
        \setbox\@aaa\copy\@tempboxa
        \setbox\@ccc\vbox to\@tempdimb{%
          \vsplit\@aaa to\@tempdimb
          \vss
          \vsplit\@aaa to\@tempdimb
          }%
        \wlog{Extra height:\the\ht\@aaa\space when \the\@tempdimb}%
      \ifvoid\@aaa
      \else
        \advance\@tempdimb 1\p@
      \repeat
      \loop
        \setbox\@aaa\copy\@tempboxa
        \setbox\@ccc\vbox to\@tempdimb{%
          \vsplit\@aaa to\@tempdimb
          \vss
          }%
        \wlog{(2)Left:\the\ht\@ccc\space
                Right:\the\ht\@aaa\space
               Output:\the\@tempdimb
             }%
      \ifdim \ht\@ccc<\ht\@aaa
        \@tempdimb \the\ht\@aaa
      \repeat
      \wlog{- LAST -^^JExtra skip:\the\@extra@skip
                    ^^JLeft:\the\ht\@ccc
                    ^^JRight:\the\ht\@aaa
                    ^^JOutput:\the\@tempdimb
           }%
      \setbox\@ccc\vbox to\@tempdimb{%
        \vsplit\@tempboxa to\@tempdimb
        \vss
        }%
      \setbox\@leftcolumn\vbox to\@tempdima{%
        \vbox to\@tempdimb{\unvbox\@ccc}%
        \hrule\@height\@nd@page@rule
        \vss
        }%
      \setbox\@outputbox\vbox to\@tempdima{%
        \vbox to\@tempdimb{%
          \unvbox\@tempboxa
          \vfilneg
          \vskip\@extra@skip
          }%
        \hrule\@height\@nd@page@rule
        \vss
        }%
      \setbox\@outputbox \vbox {%
        \hb@xt@\textwidth {%
          \hb@xt@\columnwidth {\box\@leftcolumn \hss}%
          \hfil
          \vrule \@width\columnseprule
          \hfil
          \hb@xt@\columnwidth {\box\@outputbox \hss}%
          }%
        }%
    \else
      \setbox\@outputbox \vbox {%
        \hb@xt@\textwidth {%
          \hb@xt@\columnwidth {\box\@leftcolumn \hss}%
          \hfil
          \vrule \@width\columnseprule
          \hfil
          \hb@xt@\columnwidth {\box\@outputbox \hss}%
          }%
        }%
    \fi
    \ifvoid\hold@viper
    \else
      \setbox\@outputbox \vbox{\box\hold@viper\box\@outputbox}%
    \fi
    \@combinedblfloats
    \@outputpage
    \begingroup
      \@dblfloatplacement
      \@startdblcolumn
      \@whilesw\if@fcolmade \fi
        {\@outputpage \@startdblcolumn}%
      \ifvoid\@viper
      \else
        \global\setbox\@viper\vbox{%
          \vskip-\stripsep
          \unvbox\@viper
          }%
        \@viperoutput
      \fi
    \endgroup
  \fi
}
\let\prev@enddocument\enddocument
\newif\if@lastpage \@lastpagefalse
\def\enddocument{%
  \global\@lastpagetrue
  \let\@outputdblcol\last@outputdblcol
  \prev@enddocument
  }
\def\raggedend{\global\let\enddocument\prev@enddocument}
\def\flushend{%
  \gdef\enddocument{%
    \global\@lastpagetrue
    \let\@outputdblcol\last@outputdblcol
    \prev@enddocument
    }%
  }
\def\showcolsendrule{\global\@nd@page@rule=.4pt}
\endinput
%%
%% End of file `flushend.sty'.

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