eqnarray is back, thanks roland (2dec10)

git-svn-id: svn://tug.org/texlive/trunk@20641 c570f23f-e606-0410-a88d-b1316a301751

10 files changed, 643 insertions, 2 deletions

diff --git a/Master/texmf-dist/doc/latex/eqnarray/README b/Master/texmf-dist/doc/latex/eqnarray/README
new file mode 100644
index 00000000000..13fdf004369
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/eqnarray/README
@@ -0,0 +1,31 @@
+Copyright (C) 1993-2010 Roland Winkler <rwinkler@niu.edu>
+
+Abstract
+ This package provides the equationarray environment. It combines the
+ line numbering of the eqnarray and the more flexible formatting
+ features of the array environment. This package requires the array
+ package.
+
+Recent Changes (version 1.3)
+ The new command \eqnnum gives customizable equation numbers.
+ This package is published under the terms of the GPL.
+
+Files:
+ * README         -  this file
+ * eqnarray.ins   -  for installation to get .sty from .dtx
+ * eqnarray.dtx   -  including sources and documentation
+ * eqnarray.pdf   -  print-ready documentation
+
+License
+ This LaTeX package is free software: you can redistribute it
+ and/or modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation, either version 3 of
+ the License, or (at your option) any later version.
+
+ This package is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ The GNU General Public License is available at
+ http://www.gnu.org/licenses/gpl.html
diff --git a/Master/texmf-dist/doc/latex/eqnarray/eqnarray.pdf b/Master/texmf-dist/doc/latex/eqnarray/eqnarray.pdf
new file mode 100644
index 00000000000..bf4e4af12f6
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/eqnarray/eqnarray.pdf
diff --git a/Master/texmf-dist/source/latex/eqnarray/eqnarray.drv b/Master/texmf-dist/source/latex/eqnarray/eqnarray.drv
new file mode 100644
index 00000000000..eb58900443d
--- /dev/null
+++ b/Master/texmf-dist/source/latex/eqnarray/eqnarray.drv
@@ -0,0 +1,34 @@
+%%
+%% This is file `eqnarray.drv',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% eqnarray.dtx  (with options: `driver')
+%% 
+%% IMPORTANT NOTICE:
+%% 
+%% For the copyright see the source file.
+%% 
+%% Any modified versions of this file must be renamed
+%% with new filenames distinct from eqnarray.drv.
+%% 
+%% For distribution of the original source see the terms
+%% for copying and modification in the file eqnarray.dtx.
+%% 
+%% This generated file may be distributed as long as the
+%% original source files, as listed above, are part of the
+%% same distribution. (The sources need not necessarily be
+%% in the same archive or directory.)
+\def\fileversion{1.3}
+\def\filedate{December 1, 2010}
+\def\docdate{December 1, 2010}
+\documentclass{article}
+\usepackage{doc}
+\usepackage{eqnarray}
+\begin{document}
+  \DocInput{eqnarray.dtx}
+\end{document}
+\endinput
+%%
+%% End of file `eqnarray.drv'.
diff --git a/Master/texmf-dist/source/latex/eqnarray/eqnarray.dtx b/Master/texmf-dist/source/latex/eqnarray/eqnarray.dtx
new file mode 100644
index 00000000000..c010a05bdfe
--- /dev/null
+++ b/Master/texmf-dist/source/latex/eqnarray/eqnarray.dtx
@@ -0,0 +1,402 @@
+\def\fileversion{1.3}
+\def\filedate{December 1, 2010}
+\def\docdate{December 1, 2010}
+%
+% \MakeShortVerb{\|}
+%
+% \iffalse
+%    Version 1.1: \def\filedate{jan 1993}, \def\docdate{9 jan 1995}
+%    Version 1.2: Piet van Oostrum <piet@cs.ruu.nl> added the code which
+%                 is necessary for the |fleqn| option.
+%                 \def\filedate{17 May 1995} \def\docdate{17 May 1995}
+%    Version 1.2a: \def\filedate{17 July 1997}, \def\docdate{17 July 1997}
+%                 Apart from a statement \RequirePackage{array} no
+%                 modifications have been made in the style file itself.
+%                 I improved the documentation and I packed
+%                 everything into an easier-to-use dtx file
+%    Version 1.3: \def\filedate{December 1, 2010}
+%                 \def\docdate{December 1, 2010}
+%                 The new command \eqnnum gives customizable equation numbers.
+%                 This package is published under the terms of the GPL
+% \fi
+%
+% \title{The |equationarray| environment}
+% \author{Roland Winkler\\ \normalsize
+%         |rwinkler@niu.edu|}
+% \date{\filedate\quad v\fileversion}
+% \maketitle
+% \begin{abstract}\noindent 
+%   This package provides the |equationarray| environment. It combines
+%   the line numbering of the |eqnarray| and the more flexible
+%   formatting features of the |array| environment. It requires the
+%   |array| package. 
+% 
+%   This package is published under the terms of the GNU General
+%   Public License as published by the Free Software Foundation,
+%   either version 3 of the License, or (at your option) any later
+%   version.
+% \end{abstract}
+%
+% \section{Introduction}
+%
+% Problem: The |eqnarray| environment is too restrictive because it is
+% only prepared to accept three part equations.  Some applications
+% require more sophisticated mathematics, so three parts aren't
+% enough.  Simultaneously, we would like to have our equations
+% numbered.  If the equations aren't to be numbered, then the |array|
+% environment suffices.\footnote{Nevertheless it is often easier to use the
+% |equationarray*| environment than both an |equation| plus an |array|
+% environment. Moreover a page break is possible between two lines of the
+% |equationarray|.} If the equations aren't to be aligned with
+% each other, then the |equation| environment is preferred.
+%
+% A first version of the |equationarray| environment was written by
+% Tony Li, University of Southern California, |<tli@sargas.usc.edu>|
+% starting 6/15/1988. The current version has been completely
+% rewritten in order to make it compatible with Frank Mittelbach's
+% |array| environment, i.e., it should be possible to use all features
+% of the |array| environment. If you find a bug (see below!) or if you
+% make any improvements, I'd like to hear about them.
+%
+% \section{Example}
+%
+% We give a short example for the use of |equationarray|. The text is
+% %
+% \begin{verbatim}
+% \newcolumntype{e}{@{\quad}}
+% \arraycolsep 0.2em
+% \begin{equationarray}{p{2.5em}erclecercl}
+% now: & - i\partial_t \psi & = & H\,\psi & \Rightarrow
+% & \psi (t) & = & \psi (0) \exp (iEt) \\[3ex]
+% then: & - i\partial_t \psi & = & (H+E_0) \,\psi & \Rightarrow
+% & \psi (t) & = & \psi (0) \exp [i(E+E_0)t]
+% \end{equationarray}
+% \end{verbatim}
+% %
+% \noindent and we obtain
+% %
+% \newcolumntype{e}{@{\quad}}
+% \arraycolsep 0.2em
+% \begin{equationarray}{p{2.5em}erclecercl}
+%   now: & - i\partial_t \psi & = & H\,\psi & \Rightarrow
+%   & \psi (t) & = & \psi (0) \exp (iEt) \\[3ex]
+%   then: & - i\partial_t \psi & = & (H+E_0) \,\psi & \Rightarrow
+%   & \psi (t) & = & \psi (0) \exp [i(E+E_0)t]
+% \end{equationarray}
+% %
+% An |equationarray| behaves very much like an |array|. For example,
+% |equationarray| accepts the same tokens for defining columns, and
+% new column types can be defined with |\newcolumntype|. One can use
+% |\multicolumn|, |\hline|, |\cline|, and |\vline|. Moreover,
+% |equationarray| makes use of |\arraycolsep|, |\extracolsep|, and
+% |\extrarowheight|.\footnote{Some people don't like the large spacing
+%  between the columns of the standard |eqnarray|. Don't be surprised
+%  that |equationarray| seems to have the same ``bug''. To decrease
+%  the spacing between two columns you just have to change the value
+%  of $\tt\backslash$|arraycolsep|, see the example above.} In an
+% |equationarray| all these things have the same meaning like in an
+% |array|. The main difference is that by default each entry of an
+% |equationarray| is displayed with |\displaystyle| whereas |array|
+% uses |\textstyle|. One can avoid page breaks between two lines by
+% using the star version |\\*|. There is also the star version
+% |equationarray*| which has usually no line numbers. But if for a
+% particular line you still want a line number, you can use
+% |\yesnumber|. (I find this more convenient than having many lines
+% with |\nonumber|.) Inside the |equationarray| and |equationarray*|
+% environments, there is also the macro |\eqnnum| available. It takes
+% one argument that is used as the equation number for the current
+% line. The normal line number is always suppressed in such a line.
+% 
+% The default is that without the |fleqn| option the equations are
+% centered. With the |fleqn| option they are left-justified, indented
+% by |\mathindent|.\footnote{Thanks to Piet van Oostrum
+%  |<piet@cs.ruu.nl>| who added the code which is necessary for the
+%  |fleqn| option.} With the optional argument |[l]| or |[r]| the
+% |equationarray| will appear flushleft or flushright, with the option
+% |[c]| the |equationarray| will be centered, e.g.\
+% |\begin{equationarray}[l]{rclll}|.
+% 
+% \section{Bugs}
+% 
+% Compared with |array| the |equationarray| uses slightly extended
+% versions of |\@classz| and |\multicolumn| because it must count the
+% columns. Each time you insert a |&| the counter |\@eqcnt| is
+% increased by one. |\multicolumn| increases |\@eqcnt| according to
+% the number of |\span|ed columns. Thus if you have an |array| within
+% the |equationarray| environment and in that line of the
+% |equationarray| you have less |&|'s than columns defined in the
+% preamble, then the line numbering will be not flushright but further
+% to the left.
+% 
+% In that case you can either fill up the end of the line with extra
+% |&|'s (straightforward) or you can put the original definition of
+% |\@classz| and |\multicolumn| within the definition of the |array|
+% command.
+% 
+% \section{License}
+% 
+% This \LaTeX package is free software: you can redistribute it
+% and/or modify it under the terms of the GNU General Public License
+% as published by the Free Software Foundation, either version 3 of
+% the License, or (at your option) any later version.
+% 
+% This package is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+% GNU General Public License for more details.
+% 
+% The GNU General Public License is available at\\
+% \texttt{http://www.gnu.org/licenses/gpl.html}
+%
+% \section{The code}
+%
+%\iffalse
+%<*style>
+%\fi
+%    \begin{macrocode}
+  \typeout{equationarray \fileversion\space<\filedate>}
+  % \typeout{English documentation\space\space<\docdate>}
+  \NeedsTeXFormat{LaTeX2e} \ProvidesPackage{eqnarray}
+%    \end{macrocode}
+% |equationarray| can't do anything if we don't have the |array| package.
+%    \begin{macrocode}
+\RequirePackage{array}
+%    \end{macrocode}
+% Process the |fleqn| option.
+%    \begin{macrocode}
+\def\eqnarr@left{\@centering}
+\let\eqnarr@opts\relax
+\DeclareOption{fleqn}{
+  \def\eqnarr@left{\mathindent}
+  \def\eqnarr@opts{\displaywidth\linewidth
+                   \advance\displaywidth-\mathindent} }
+\ProcessOptions
+%    \end{macrocode}
+%
+% \begin{macro}{\equationarray}
+%    \begin{macrocode}
+\def\equationarray{%
+ \col@sep\arraycolsep
+ \def\d@llarbegin{$\displaystyle}%
+ \def\d@llarend{$}%
+ \stepcounter{equation}%
+ \let\@currentlabel=\theequation
+ \set@eqnsw \global\@eqcnt\z@ \global\@eqargcnt\z@
+ \let\@classz\@eqnclassz
+%    \end{macrocode}
+% We need an extended definition of |\multicolumn| which increases
+% the counter |\@eqcnt| according to the number of columns covered
+% by |\multicolumn|.
+%    \begin{macrocode}
+ \def\multicolumn##1##2##3{\@eqnmulticolumn{##1}{##2}{##3}%
+                           \global\advance\@eqcnt##1
+                           \global\advance\@eqcnt\m@ne}%
+%    \end{macrocode}
+% The macro |\eqnnum| initializes |\@eqnarrnum| and suppresses
+% ordinary equation numbering.
+%    \begin{macrocode}
+ \def\eqnnum##1{\global\@eqnswfalse\gdef\@eqnarrnum{##1}}
+ \def\@halignto{to\displaywidth}%
+ \@ifnextchar[{\@equationarray}{\@equationarray[.]}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@eqnmulticolumn}
+% |\@eqnmulticolumn| equals the original version of |\multicolumn|.
+%    \begin{macrocode}
+\let\@eqnmulticolumn=\multicolumn
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\nonumber,\yesnumber}
+% Note that |\nonumber| is already defined in standard latex.tex
+%    \begin{macrocode}
+% \def\nonumber{\global\@eqnswfalse}
+\def\yesnumber{\global\@eqnswtrue}
+\let\set@eqnsw=\yesnumber
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@amper}
+% We need a macro for |&| that expands at the right time.
+%    \begin{macrocode}
+\def\@amper{&}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@eqargcnt}
+% The main idea about the |equationarray| is the following: The
+% counter |\@eqargcnt| counts the number of columns defined in the
+% preamble. In each line of the |equationarray|, the counter
+% |\@eqcnt| counts the number of |&| which have been introduced
+% explicitely by the user. By comparing these counters we can
+% silently fill every line of the |equationarray| with exactly
+% |\@eqargcnt| copies of |&| before we insert the equation
+% number. See also the \TeX book, Exercise 22.9.
+%    \begin{macrocode}
+\newcount\@eqargcnt  % counts number of columns
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@equationarray}
+%    \begin{macrocode}
+\def\@equationarray[#1]#2{%
+     \eqnarr@opts
+     \@tempdima \ht \strutbox
+     \advance \@tempdima by\extrarowheight
+     \setbox\@arstrutbox=\hbox{\vrule
+               \@height\arraystretch \@tempdima
+               \@depth\arraystretch \dp \strutbox
+               \@width\z@}%
+     \gdef\advance@eqargcnt{\global\advance\@eqargcnt\@ne}%
+     \begingroup
+     \@mkpream{#2}%
+     \xdef\@preamble{%
+      \if #1l\tabskip\z@ \else\if #1r\tabskip\@centering
+                         \else\if #1c\tabskip\@centering
+                         \else\tabskip\eqnarr@left \fi\fi\fi
+      \halign \@halignto
+      \bgroup \tabskip\z@ \@arstrut \@preamble
+      \if #1l\tabskip\@centering \else\if #1r\tabskip\z@
+                                 \else\tabskip\@centering \fi\fi
+%    \end{macrocode}
+%
+% Here we need an extra column for the equation-number
+%
+%    \begin{macrocode}
+      \@amper\llap{\@sharp}\tabskip\z@\cr}%
+     \endgroup
+     \gdef\advance@eqargcnt{}%
+     \bgroup
+     \let\@sharp## \let\protect\relax
+     \m@th   \let\\=\@equationcr
+     \let\par\@empty
+     $$                            % $$ BRACE MATCHING HACK
+     \lineskip \z@
+     \baselineskip \z@
+     \@preamble}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@eqnclassz}
+% |\@eqnclassz| does the same thing as |\@classz| except that we add\\
+% |\advance@eqargcnt|
+%    \begin{macrocode}
+\def\@eqnclassz{\@classx
+   \@tempcnta \count@
+   \advance@eqargcnt
+   \prepnext@tok
+   \@addtopreamble{%
+      \global\advance\@eqcnt\@ne
+      \ifcase \@chnum
+      \hfil \d@llarbegin \insert@column \d@llarend\hfil \or
+      \d@llarbegin \insert@column \d@llarend \hfil \or
+      \hfil\kern\z@ \d@llarbegin \insert@column \d@llarend \or
+      $\vcenter
+      \@startpbox{\@nextchar}\insert@column \@endpbox $\or
+      \vtop \@startpbox{\@nextchar}\insert@column \@endpbox \or
+      \vbox \@startpbox{\@nextchar}\insert@column \@endpbox
+      \fi}\prepnext@tok}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\endequationarray}
+%    \begin{macrocode}
+\def\endequationarray{\@zequationcr
+   \egroup
+   \global\advance\c@equation\m@ne $$  % $$ BRACE MATCHING HACK
+   \egroup\global\@ignoretrue
+   \gdef\@preamble{}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@equationcr}
+% If we have |\\*| the command |\@equationcr| avoids page breaks
+%    \begin{macrocode}
+\def\@equationcr{${\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
+    \@xequationcr}{\global\@eqpen\interdisplaylinepenalty
+                   \@xequationcr}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@xequationcr}
+%    \begin{macrocode}
+\def\@xequationcr{%
+    \@ifnextchar[{\@argequationcr}{\ifnum0=`{\fi}${}%
+    \@zequationcr}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@argequationcr}
+%    \begin{macrocode}
+\def\@argequationcr[#1]{\ifnum0=`{\fi}${}\ifdim #1>\z@
+   \@xargequationcr{#1}\else
+   \@yargequationcr{#1}\fi}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@xargequationcr}
+%    \begin{macrocode}
+\def\@xargequationcr#1{\unskip
+   \@tempdima #1\advance\@tempdima \dp \@arstrutbox
+   \vrule \@depth\@tempdima \@width\z@
+   \@zequationcr\noalign{\penalty\@eqpen}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@yargequationcr}
+%    \begin{macrocode}
+\def\@yargequationcr#1{%
+   \@zequationcr\noalign{\penalty\@eqpen\vskip #1}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@eqnarrnum}
+% The macro |\@eqnarrnum| holds a customized equation number.
+% This macro is initialized via the macro |\eqnnum|.
+%    \begin{macrocode}
+\let\@eqnarrnum\relax
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@zequationcr}
+% We add |&\omit| for those columns that will remain empty.
+% Note that without |\omit| we already have |\advance\@eqcnt\@ne| in
+% the preamble.
+%
+%    \begin{macrocode}
+\def\@zequationcr{\@whilenum\@eqcnt <\@eqargcnt
+   \do{\@amper\omit\global\advance\@eqcnt\@ne}%
+%    \end{macrocode}
+% We add an extra alignment tab for the equationnumber
+%    \begin{macrocode}
+   \@amper
+%    \end{macrocode}
+% Either we insert the regular equation number or the customized one.
+%    \begin{macrocode}
+   \if@eqnsw\@eqnnum\stepcounter{equation}\else
+     \@eqnarrnum\global\let\@eqnarrnum\relax\fi
+   \set@eqnsw\global\@eqcnt\z@\cr}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\equationarray*}
+% Finally we define the |equationarray*| environment. It does exactly
+% the same thing as |\equationarray| except that we |\let| the command
+% |\set@eqnsw| equal |\nonumber|
+%    \begin{macrocode}
+\@namedef{equationarray*}{%
+   \let\set@eqnsw=\nonumber \equationarray}
+\@namedef{endequationarray*}{\endequationarray}
+%    \end{macrocode}
+% \end{macro}
+%\iffalse
+%</style>
+%<+driver>\documentclass{article}
+%<+driver>\usepackage{doc}
+%<+driver>\usepackage{eqnarray}
+%<+driver>\begin{document}
+%<+driver>  \DocInput{eqnarray.dtx}
+%<+driver>\end{document}
+%\fi
+\endinput
diff --git a/Master/texmf-dist/source/latex/eqnarray/eqnarray.ins b/Master/texmf-dist/source/latex/eqnarray/eqnarray.ins
new file mode 100644
index 00000000000..d18d8bc2634
--- /dev/null
+++ b/Master/texmf-dist/source/latex/eqnarray/eqnarray.ins
@@ -0,0 +1,41 @@
+%% Copyright (C) 1993-2010 Roland Winkler <rwinkler@niu.edu>
+%%
+%% This file will generate fast loadable file eqnarray.sty from
+%% eqnarray.dtx when run through LaTeX or TeX
+%%
+%% This LaTeX package is free software: you can redistribute it
+%% and/or modify it under the terms of the GNU General Public License
+%% as published by the Free Software Foundation, either version 3 of
+%% the License, or (at your option) any later version.
+%%
+%% This package is distributed in the hope that it will be useful,
+%% but WITHOUT ANY WARRANTY; without even the implied warranty of
+%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%% GNU General Public License for more details.
+%%
+%% The GNU General Public License is available at
+%% http://www.gnu.org/licenses/gpl.html
+%%
+%%%% --------------- start of docstrip commands ------------------
+%%
+\def\batchfile{eqnarray.ins}
+\input docstrip.tex
+\keepsilent
+
+\generateFile{eqnarray.sty}{t}{%
+  \from{eqnarray.dtx}{style}}
+
+\generateFile{eqnarray.drv}{t}{%
+  \from{eqnarray.dtx}{driver}}
+
+\Msg{***********************************************************}
+\Msg{*}
+\Msg{* To finish the installation move the following}
+\Msg{* style file into a directory searched by LaTeX:}
+\Msg{*}
+\Msg{* \space\space eqnarray.sty}
+\Msg{*}
+\Msg{* To produce the documentation run the file}
+\Msg{* `eqnarray.drv' through LaTeX.}
+\Msg{*}
+\Msg{***********************************************************}
diff --git a/Master/texmf-dist/tex/latex/eqnarray/eqnarray.sty b/Master/texmf-dist/tex/latex/eqnarray/eqnarray.sty
new file mode 100644
index 00000000000..3be35b4eadd
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/eqnarray/eqnarray.sty
@@ -0,0 +1,133 @@
+%%
+%% This is file `eqnarray.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% eqnarray.dtx  (with options: `style')
+%% 
+%% IMPORTANT NOTICE:
+%% 
+%% For the copyright see the source file.
+%% 
+%% Any modified versions of this file must be renamed
+%% with new filenames distinct from eqnarray.sty.
+%% 
+%% For distribution of the original source see the terms
+%% for copying and modification in the file eqnarray.dtx.
+%% 
+%% This generated file may be distributed as long as the
+%% original source files, as listed above, are part of the
+%% same distribution. (The sources need not necessarily be
+%% in the same archive or directory.)
+\def\fileversion{1.3}
+\def\filedate{December 1, 2010}
+\def\docdate{December 1, 2010}
+  \typeout{equationarray \fileversion\space<\filedate>}
+  % \typeout{English documentation\space\space<\docdate>}
+  \NeedsTeXFormat{LaTeX2e} \ProvidesPackage{eqnarray}
+\RequirePackage{array}
+\def\eqnarr@left{\@centering}
+\let\eqnarr@opts\relax
+\DeclareOption{fleqn}{
+  \def\eqnarr@left{\mathindent}
+  \def\eqnarr@opts{\displaywidth\linewidth
+                   \advance\displaywidth-\mathindent} }
+\ProcessOptions
+\def\equationarray{%
+ \col@sep\arraycolsep
+ \def\d@llarbegin{$\displaystyle}%
+ \def\d@llarend{$}%
+ \stepcounter{equation}%
+ \let\@currentlabel=\theequation
+ \set@eqnsw \global\@eqcnt\z@ \global\@eqargcnt\z@
+ \let\@classz\@eqnclassz
+ \def\multicolumn##1##2##3{\@eqnmulticolumn{##1}{##2}{##3}%
+                           \global\advance\@eqcnt##1
+                           \global\advance\@eqcnt\m@ne}%
+ \def\eqnnum##1{\global\@eqnswfalse\gdef\@eqnarrnum{##1}}
+ \def\@halignto{to\displaywidth}%
+ \@ifnextchar[{\@equationarray}{\@equationarray[.]}}
+\let\@eqnmulticolumn=\multicolumn
+\def\yesnumber{\global\@eqnswtrue}
+\let\set@eqnsw=\yesnumber
+\def\@amper{&}
+\newcount\@eqargcnt  % counts number of columns
+\def\@equationarray[#1]#2{%
+     \eqnarr@opts
+     \@tempdima \ht \strutbox
+     \advance \@tempdima by\extrarowheight
+     \setbox\@arstrutbox=\hbox{\vrule
+               \@height\arraystretch \@tempdima
+               \@depth\arraystretch \dp \strutbox
+               \@width\z@}%
+     \gdef\advance@eqargcnt{\global\advance\@eqargcnt\@ne}%
+     \begingroup
+     \@mkpream{#2}%
+     \xdef\@preamble{%
+      \if #1l\tabskip\z@ \else\if #1r\tabskip\@centering
+                         \else\if #1c\tabskip\@centering
+                         \else\tabskip\eqnarr@left \fi\fi\fi
+      \halign \@halignto
+      \bgroup \tabskip\z@ \@arstrut \@preamble
+      \if #1l\tabskip\@centering \else\if #1r\tabskip\z@
+                                 \else\tabskip\@centering \fi\fi
+      \@amper\llap{\@sharp}\tabskip\z@\cr}%
+     \endgroup
+     \gdef\advance@eqargcnt{}%
+     \bgroup
+     \let\@sharp## \let\protect\relax
+     \m@th   \let\\=\@equationcr
+     \let\par\@empty
+     $$                            % $$ BRACE MATCHING HACK
+     \lineskip \z@
+     \baselineskip \z@
+     \@preamble}
+\def\@eqnclassz{\@classx
+   \@tempcnta \count@
+   \advance@eqargcnt
+   \prepnext@tok
+   \@addtopreamble{%
+      \global\advance\@eqcnt\@ne
+      \ifcase \@chnum
+      \hfil \d@llarbegin \insert@column \d@llarend\hfil \or
+      \d@llarbegin \insert@column \d@llarend \hfil \or
+      \hfil\kern\z@ \d@llarbegin \insert@column \d@llarend \or
+      $\vcenter
+      \@startpbox{\@nextchar}\insert@column \@endpbox $\or
+      \vtop \@startpbox{\@nextchar}\insert@column \@endpbox \or
+      \vbox \@startpbox{\@nextchar}\insert@column \@endpbox
+      \fi}\prepnext@tok}
+\def\endequationarray{\@zequationcr
+   \egroup
+   \global\advance\c@equation\m@ne $$  % $$ BRACE MATCHING HACK
+   \egroup\global\@ignoretrue
+   \gdef\@preamble{}}
+\def\@equationcr{${\ifnum0=`}\fi\@ifstar{\global\@eqpen\@M
+    \@xequationcr}{\global\@eqpen\interdisplaylinepenalty
+                   \@xequationcr}}
+\def\@xequationcr{%
+    \@ifnextchar[{\@argequationcr}{\ifnum0=`{\fi}${}%
+    \@zequationcr}}
+\def\@argequationcr[#1]{\ifnum0=`{\fi}${}\ifdim #1>\z@
+   \@xargequationcr{#1}\else
+   \@yargequationcr{#1}\fi}
+\def\@xargequationcr#1{\unskip
+   \@tempdima #1\advance\@tempdima \dp \@arstrutbox
+   \vrule \@depth\@tempdima \@width\z@
+   \@zequationcr\noalign{\penalty\@eqpen}}
+\def\@yargequationcr#1{%
+   \@zequationcr\noalign{\penalty\@eqpen\vskip #1}}
+\let\@eqnarrnum\relax
+\def\@zequationcr{\@whilenum\@eqcnt <\@eqargcnt
+   \do{\@amper\omit\global\advance\@eqcnt\@ne}%
+   \@amper
+   \if@eqnsw\@eqnnum\stepcounter{equation}\else
+     \@eqnarrnum\global\let\@eqnarrnum\relax\fi
+   \set@eqnsw\global\@eqcnt\z@\cr}
+\@namedef{equationarray*}{%
+   \let\set@eqnsw=\nonumber \equationarray}
+\@namedef{endequationarray*}{\endequationarray}
+\endinput
+%%
+%% End of file `eqnarray.sty'.
diff --git a/Master/tlpkg/bin/tlpkg-ctan-check b/Master/tlpkg/bin/tlpkg-ctan-check
index d73698177c3..c0392bdd0bf 100755
--- a/Master/tlpkg/bin/tlpkg-ctan-check
+++ b/Master/tlpkg/bin/tlpkg-ctan-check
@@ -122,7 +122,7 @@ my @TLP_working = qw(
     engpron engrec engtlc enumitem envbig environ envlab
     epigrafica epigram epigraph epiolmec eplain
     epsdice epsf epsincl epslatex-fr epspdf epspdfconversion epstopdf
-    eqell eqlist eqparbox errata es-tex-faq
+    eqell eqlist eqnarray eqparbox errata es-tex-faq
     erdc esdiff esint esint-type1 esk eskd eskdx eso-pic esvect
     estcpmm
     etaremune etex-pkg etextools ethiop ethiop-t1 etoolbox euenc eukdate
diff --git a/Master/tlpkg/libexec/ctan2tds b/Master/tlpkg/libexec/ctan2tds
index 94d9c25b54a..449b9d7168a 100755
--- a/Master/tlpkg/libexec/ctan2tds
+++ b/Master/tlpkg/libexec/ctan2tds
@@ -274,7 +274,6 @@ $Master = "$mydir/../..";
  'epspdf',	"&MAKEflatten",
  'eqexam',	"die 'skipping, per author request'",
  'eqmark',	"die 'skipping, latex 2.09, was never in TL'",
- 'eqnarray',	"die 'skipping, nonfree'",
  'esindex',	"die 'skipping, use bezos'",
  'eskdx',	"&MAKEeskdx",
  'esvect',	"&MAKEflatten",
diff --git a/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc
index cd03dd22797..9a334cf9be7 100644
--- a/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc
+++ b/Master/tlpkg/tlpsrc/collection-mathextra.tlpsrc
@@ -11,6 +11,7 @@ depend circle
 depend commath
 depend concmath
 depend concrete
+depend eqnarray
 depend extarrows
 depend extpfeil
 depend faktor
diff --git a/Master/tlpkg/tlpsrc/eqnarray.tlpsrc b/Master/tlpkg/tlpsrc/eqnarray.tlpsrc
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/Master/tlpkg/tlpsrc/eqnarray.tlpsrc