%% ---------------------------------------------------------------------------
%% This version of arcs.sty was hacked up to work around an incompatibility
%% between arcs and relsize.  See Michael Sharpe's August 2013 posting to
%% the XeTeX list (http://tug.org/pipermail/xetex/2013-August/024674.html)
%% for details, but the patch is basically to replace \@gobbletwo with a
%% newly defined \@gobblethree.
%% ---------------------------------------------------------------------------

%%
%% This is file `arcs.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% arcs.dtx  (with options: `package')
%% 
%% This is a generated file.
%% 
%% Copyright 2004 Gianfranco Boggio-Togna
%% 
%% This file may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.2 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 1.2 or later is part of all distributions
%% of LaTeX version 1999/12/01 or later.
%% 
\NeedsTeXFormat {LaTeX2e}[2003/12/01]
\ProvidesPackage {arcs}[2004/05/09]
\RequirePackage {relsize}
\long\def\@gobblethree#1#2#3{}
\newcommand{\overarc}[2][1]{\over@under@arc{#1}{#2}\z@}
\newcommand{\underarc}[2][1]{\over@under@arc{#1}{#2}\@ne}
\newcommand{\over@under@arc}[3]{%
  \leavevmode
  \hbox {%
    \setbox\z@ = \hbox {#2}%
    \ifdim \ht\z@ = \z@ %      arc over/under space
      \ifdim \dp\z@ = \z@
        \ht\z@ = 1ex\relax
      \fi
    \fi
    \dimen@ = #1\wd\z@
    \begingroup
    \let \rs@size@warning = \@gobblethree
    \relsize{-10}%
    \wd\@ne = \z@
    \@whiledim \wd\@ne < .95\dimen@ \do {%
      \ifx \@currsize \Huge
        \dimen@ = \z@
      \else
        $%
        \skip@ = \f@baselineskip
        \fontencoding{OML}\fontfamily{cmm}\fontseries{m}%
        \fontshape{it}\fontsize{\ssf@size}{\skip@}\selectfont
        \global \setbox\@ne = \hbox {%
           \hss\symbol{"5\ifnum #3=\z@ F\else E\fi}\hss}%
        \ifdim \wd\@ne < \dimen@
          \fontsize{\sf@size}{\skip@}\selectfont
          \global \setbox\@ne = \hbox {%
             \hss\symbol{"5\ifnum #3=\z@ F\else E\fi}\hss}%
          \ifdim \wd\@ne < \dimen@
            \fontsize{\tf@size}{\skip@}\selectfont
            \global \setbox\@ne = \hbox {%
              \hss\symbol{"5\ifnum #3=\z@ F\else E\fi}\hss}%
          \fi
        \fi
        $%
      \fi
      \ifdim \wd\@ne < \dimen@
        \relsize{+1}%
      \fi
      \global \dimen@i = \fontdimen5\the\font
    }%
    \endgroup
    \ifnum #3 = \z@
      \dimen@ii = 1.067\ht\z@
      \global \divide \dimen@i by \tw@
      \global \advance \dimen@i by -\ht\@ne
      \advance \dimen@ii by .6\dimen@i
    \else
      \dimen@ii = -1.05\ht\@ne
      \advance \dimen@ii by -.75pt
      \ifdim \dp\z@ > \z@
        \advance \dimen@ii by -\dp\z@
      \fi
    \fi
    \copy\z@
    \dimen@ = \wd\z@
    \advance \dimen@ by \wd\@ne
    \kern -.5\dimen@
    \raisebox {\dimen@ii}[\z@][\z@]{\copy\@ne}%
    \dimen@ = \wd\z@
    \advance \dimen@ by -\wd\@ne
    \dimen@ = .5\dimen@
    \kern \dimen@
  }%
}
%% \Finale
\endinput
%%
%% End of file `arcs.sty'.