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Code Editor : idxmac.tex

% 
% idxmac.tex
%
% Most of the code in this file are excerpts from latex.tex and manmac.tex.
% The actual style of the index environment \beginindex ... \endindex
% at the end of this file is left empty.
%
% 
\def\makeatletter{\catcode`\@=11\relax}
\def\makeatother{\catcode`\@=12\relax}
\makeatletter
\newif\if@filesw \@fileswtrue
\newif\if@nobreak \@nobreakfalse 
\def\@makeother#1{\catcode`#112\relax}
\def\newwrite{\alloc@7\write\chardef\sixt@@n}
\newwrite\@unused
\def\typeout#1{{\let\protect\string\immediate\write\@unused{#1}}}

%          ****************************************
%          *          PAGE NUMBERING              *
%          ****************************************
%
% Page numbers are produced by a page counter, used just like any other
% counter.  The only difference is that \c@page contains the number of
% the next page to be output (the one currently being produced), rather
% than one minus it.  Thus, it is normally initialized to 1 rather than
% 0.  \c@page is defined to be \count0, rather than a count assigned by
% \newcount.
% 
% The user sets the pagenumber style with the \pagenumbering{FOO}
% command, which sets the page counter to 1 and defines \thepage to be
% \FOO.  For example, \pagenumbering{roman} causes pages to be numbered
% i, ii, etc.

% Numbering commands for definitions of \theCOUNTER and \list arguments.
% \fnsymbol produces the standard footnoting symbols: asterisk, dagger, etc.
% They can be used only in math mode.

\def\arabic#1{\@arabic{\@nameuse{c@#1}}} 
\def\roman#1{\@roman{\@nameuse{c@#1}}}  
\def\Roman#1{\@Roman{\@nameuse{c@#1}}}  
\def\alph#1{\@alph{\@nameuse{c@#1}}}   
\def\Alph#1{\@Alph{\@nameuse{c@#1}}}   
\def\fnsymbol#1{\@fnsymbol{\@nameuse{c@#1}}}

\def\@arabic#1{\ifnum #1>0 \number #1\fi}
\def\@roman#1{\romannumeral #1}
\def\@Roman#1{\expandafter\uppercase\expandafter{\romannumeral #1}}
\def\@alph#1{\ifcase#1\or a\or b\or c\or d\else\@ialph{#1}\fi}
\def\@ialph#1{\ifcase#1\or \or \or \or \or e\or f\or g\or h\or i\or j\or
   k\or l\or m\or n\or o\or p\or q\or r\or s\or t\or u\or v\or w\or x\or y\or
   z\else\@ctrerr\fi}
\def\@Alph#1{\ifcase#1\or A\or B\or C\or D\else\@Ialph{#1}\fi}
\def\@Ialph#1{\ifcase#1\or \or \or \or \or E\or F\or G\or H\or I\or J\or
   K\or L\or M\or N\or O\or P\or Q\or R\or S\or T\or U\or V\or W\or X\or Y\or
   Z\else\@ctrerr\fi}
\def\@fnsymbol#1{\ifcase#1\or *\or \dagger\or \ddagger\or 
   \mathchar "278\or \mathchar "27B\or \|\or **\or \dagger\dagger
   \or \ddagger\ddagger \else\@ctrerr\fi\relax}

\countdef\c@page=0 \c@page=1
\def\cl@page{}
\def\pagenumbering#1{\global\c@page \@ne \gdef\thepage{\csname @#1\endcsname
   \c@page}}
\pagenumbering{arabic}

% \@bsphack ... \@esphack
%     used by macros such as \index and \begin{@float} ... \end{@float}
%     that want to be invisible -- i.e.,
%     not leave any extra space when used in the middle of text.  Such
%     a macro should begin with \@bsphack and end with \@esphack
%     The macro in question should not create any text, nor change the
%     mode.
%
% \@bsphack ==
%  BEGIN
%    \dimen\@savsk := \lastskip
%    if  hmode  then  \@savsf := \spacefactor  fi
%  END
%
% \@esphack ==
%  BEGIN
%    if  hmode
%      then  \spacefactor := \@savsf
%            if \dimen\@savsk > 0pt  then  \ignorespaces  
%                                          \global\ignoretrue   fi
%    fi
%  END
%

\newdimen\@savsk
\newcount\@savsf

\def\@bsphack{\@savsk\lastskip 
    \ifhmode\@savsf\spacefactor\fi}

\def\@esphack{\relax\ifhmode\spacefactor\@savsf
     {}\ifdim \@savsk >\z@ \global\ignoretrue \ignorespaces 
  \fi \fi}

% The command \@sanitize changes the catcode of all special characters
% except for braces to 'other'.  It can be used for commands like
% \index that want to write their arguments verbatim.  Needless to
% say, this command should only be executed within a group, or chaos
% will ensue.

\def\@sanitize{\@makeother\ \@makeother\\\@makeother\$\@makeother\&%
\@makeother\#\@makeother\^\@makeother\^^K\@makeother\_\@makeother\^^A%
\@makeother\%\@makeother\~}

%       ****************************************
%       *            INDEX COMMANDS            *
%       ****************************************
%
% \makeindex ==
%   BEGIN
%    if \@filesw = T
%      then  open file \jobname.IDX as \indexfile
%             \index ==  BEGIN \@bsphack 
%                              \begingroup
%                                  re-\catcode special characters to 'other'
%                                  \wrindex
%    fi
%   END  
%
%  \wrindex{ITEM} ==
%    BEGIN
%        write of {\indexentry{ITEM}{page number}}
%      \endgroup
%      \@esphack
%    END

%  INITIALIZATION:
%
%  \index == BEGIN \@bsphack 
%                  \begingroup
%                     re-\catcode special characters (in case '%' there)
%                     \index
%            END
%              
%  \index{ITEM} == BEGIN \endgroup \@esphack END
%
\def\makeindex{\if@filesw \newwrite\@indexfile
  \immediate\openout\@indexfile=\jobname.idx
  \def\index{\@bsphack\begingroup\@sanitize\@wrindex\@indexfile}
  \typeout{Writing index file \jobname.idx }\fi}

\def\@wrindex#1#2{\let\thepage\relax
   \xdef\gtempa{\write#1{\string
      \indexentry{#2}{\thepage}}}\endgroup\gtempa
   \if@nobreak \ifvmode\@nobreak\fi\fi\@esphack}

\def\index{\@bsphack\begingroup\@sanitize\@index}
\def\@index#1{\endgroup\@esphack}

\def\makeglossary{\if@@filesw \newwrite\@glossaryfile
  \immediate\openout\@glossaryfile=\jobname.glo
  \def\glossary{\@bsphack\begingroup\@sanitize\@wrindex\@glossaryfile}\typeout
  {Writing glossary file \jobname.glo }\fi}

\def\glossary{\@bsphack\begingroup\@sanitize\index}

\newdimen\pagewidth
\pagewidth=\hsize
\newbox\partialpage
\def\begindoublecolumns{\begingroup
  \output={\global\setbox\partialpage=\vbox{\unvbox255\bigskip}}\eject
  \output={\doublecolumnout} \hsize=14pc \vsize=89pc
  \let\item\@idxitem}
\def\enddoublecolumns{\output={\balancecolumns}\eject
  \endgroup \pagegoal=\vsize}
\def\doublecolumnout{\splittopskip=\topskip \splitmaxdepth=\maxdepth
  \dimen@=44pc \advance\dimen@ by-\ht\partialpage
  \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
  \onepageout\pagesofar
  \unvbox255 \penalty\outputpenalty}
\def\pagesofar{\unvbox\partialpage
  \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}}
\def\balancecolumns{\setbox0=\vbox{\unvbox255} \dimen@=\ht0
  \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
  \divide\dimen@ by2 \splittopskip=\topskip
  {\vbadness=10000 \loop \global\setbox3=\copy0
    \global\setbox1=\vsplit3 to\dimen@
    \ifdim\ht3>\dimen@ \global\advance\dimen@ by1pt \repeat}
  \setbox0=\vbox to\dimen@{\unvbox1}
  \setbox2=\vbox to\dimen@{\unvbox3}
  \pagesofar}

\def\@idxitem{\par\hangindent 40pt}
\def\subitem{\par\hangindent 40pt \hskip 20pt}
\def\subsubitem{\par\hangindent 40pt \hskip 30pt}
\def\indexspace{\par \vskip 10pt plus 5pt minus 3pt\relax}

\def\beginindex{\begingroup\let\item\@idxitem
% Output opening routines go here
}
\def\endindex{
% Output closing routines go here.
\endgroup}
\makeatother

${this.title}

Code Editor : idxmac.tex