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%% $Id: xy.sty,v 3.3 1996/12/19 03:31:56 krisrose Exp $
%%
%% ``Xy-pic as LaTeX 2.09 style option and LaTeX 2e package''.
%% Copyright (c) 1993-1996 Kristoffer H. Rose <krisrose@brics.dk>
%%
%% This file is part of the Xy-pic package for graphs and diagrams in TeX.
%% See the companion README and INSTALL files for further information.
%% Copyright (c) 1991-1996 Kristoffer H. Rose <krisrose@brics.dk>
%%
%% The Xy-pic 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 2 of the License, or (at your
%% option) any later version.
%%
%% The Xy-pic 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.
%%
%% You should have received a copy of the GNU General Public License along
%% with this package; if not, write to the Free Software Foundation, Inc.,
%% 675 Mass Ave, Cambridge, MA 02139, USA.
% Load Xy-pic with catcode of @ set as it will be in user text:
\count255=\the\catcode`\@ {\catcode`\@=11 \xdef\xystycatcode{\the\count255}}
\makeatletter
% REPAIR bug of the 2e version of AMS-LaTeX where \makeatother is broken...
\ifx\@ifpackageloaded\undefined \makeatother
\else \@ifpackageloaded{amstex}{\catcode`\@=\active}{\makeatother}\fi
\input xy
% That is all unless this is called as a LaTeX2e `native mode' package. Is
% there an official way to check this? Anyway, this seems to work:
\makeatletter
\ifx\if@compatibility\undefined \catcode`\@=\xystycatcode \endinput \fi
% Ensure that we are *really* running LaTeX2e...!
\NeedsTeXFormat{LaTeX2e}
% This file provides the current version of Xy-pic!
\edef\next{%
\noexpand\ProvidesPackage{xy}[\xydate\space Xy-pic version \xyversion]}\next
% Recognise some standard LaTeX2e class options (cf. `LaTeX Companion' p.317):
\DeclareOption{cmactex}{\xyoption{cmactex}}
\DeclareOption{dvips}{\xyoption{dvips}\xyoption{ps}}
\DeclareOption{dvitops}{\xyoption{dvitops}\xyoption{ps}}
\DeclareOption{emtex}{\xyoption{emtex}}
\DeclareOption{ln}{\xywarning@{`ln' DVI driver not yet fully supported}}
\DeclareOption{oztex}{\xyoption{oztex}}
\DeclareOption{textures}{\xyoption{textures}}
\DeclareOption{xdvi}{\xyoption{xdvi}}
% This is special:
\DeclareOption{colour}{\xyoption{color}} % :-)
% This (obsolete) cmtip style option should be activated after loading:
\DeclareOption{cmtip}{\xyoption{cmtip}\UseComputerModernTips}
% Pass the desired tip size if defined
\DeclareOption{10pt}{\xywithoption{tips}{\def\tipsize@@{10}}}
\DeclareOption{11pt}{\xywithoption{tips}{\def\tipsize@@{11}}}
\DeclareOption{12pt}{\xywithoption{tips}{\def\tipsize@@{12}}}
% Other options are just loaded.
\DeclareOption*{\edef\next{\noexpand\xyoption{\CurrentOption}}\next}
% Reinstall catcode of @...
\catcode`\@=\xystycatcode
% ... process the options, and that is all.
\ProcessOptions
\endinput
% $Log: xy.sty,v $
% Revision 3.3 1996/12/19 03:31:56 krisrose
% Maintenance release
%
% Revision 3.1 1995/09/05 20:31:32 kris
% Releasing!
%
% Revision 3.0 1995/07/07 20:14:21 kris
% Major release w/new User's Guide!
%
% Revision 2.13 1995/07/04 15:11:17 kris
% Ready to release v3?
%
% Revision 2.12 1994/10/25 11:34:25 kris
% Interim release just before v3 [works with AMS-LaTeX 1.2]...
%
% Revision 2.9 1994/06/09 14:59:19 kris
% Release 3beta.
%
% Revision 2.8 1994/04/08 04:30:00 kris
% Second (bug fix) 3alpha release.
%
% Revision 2.7 1994/03/08 02:06:01 kris
% Release 3alpha.
%
% New for version 2.7.
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