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Code Editor : grfext.sty

%%
%% This is file `grfext.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% grfext.dtx  (with options: `package')
%% 
%% This is a generated file.
%% 
%% Project: grfext
%% Version: 2019/12/03 v1.3
%% 
%% Copyright (C)
%%    2007, 2010 Heiko Oberdiek
%%    2016-2019 Oberdiek Package Support Group
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.3c of this license or (at your option) any later
%% version. This version of this license is in
%%    https://www.latex-project.org/lppl/lppl-1-3c.txt
%% and the latest version of this license is in
%%    https://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.
%% 
%% This work has the LPPL maintenance status "maintained".
%% 
%% The Current Maintainers of this work are
%% Heiko Oberdiek and the Oberdiek Package Support Group
%% https://github.com/ho-tex/grfext/issues
%% 
%% 
%% This work consists of the main source file grfext.dtx
%% and the derived files
%%    grfext.sty, grfext.pdf, grfext.ins, grfext.drv.
%% 
\begingroup\catcode61\catcode48\catcode32=10\relax%
  \catcode13=5 % ^^M
  \endlinechar=13 %
  \catcode35=6 % #
  \catcode39=12 % '
  \catcode44=12 % ,
  \catcode45=12 % -
  \catcode46=12 % .
  \catcode58=12 % :
  \catcode64=11 % @
  \catcode123=1 % {
  \catcode125=2 % }
  \expandafter\let\expandafter\x\csname ver@grfext.sty\endcsname
  \ifx\x\relax % plain-TeX, first loading
  \else
    \def\empty{}%
    \ifx\x\empty % LaTeX, first loading,
      % variable is initialized, but \ProvidesPackage not yet seen
    \else
      \expandafter\ifx\csname PackageInfo\endcsname\relax
        \def\x#1#2{%
          \immediate\write-1{Package #1 Info: #2.}%
        }%
      \else
        \def\x#1#2{\PackageInfo{#1}{#2, stopped}}%
      \fi
      \x{grfext}{The package is already loaded}%
      \aftergroup\endinput
    \fi
  \fi
\endgroup%
\begingroup\catcode61\catcode48\catcode32=10\relax%
  \catcode13=5 % ^^M
  \endlinechar=13 %
  \catcode35=6 % #
  \catcode39=12 % '
  \catcode40=12 % (
  \catcode41=12 % )
  \catcode44=12 % ,
  \catcode45=12 % -
  \catcode46=12 % .
  \catcode47=12 % /
  \catcode58=12 % :
  \catcode64=11 % @
  \catcode91=12 % [
  \catcode93=12 % ]
  \catcode123=1 % {
  \catcode125=2 % }
  \expandafter\ifx\csname ProvidesPackage\endcsname\relax
    \def\x#1#2#3[#4]{\endgroup
      \immediate\write-1{Package: #3 #4}%
      \xdef#1{#4}%
    }%
  \else
    \def\x#1#2[#3]{\endgroup
      #2[{#3}]%
      \ifx#1\@undefined
        \xdef#1{#3}%
      \fi
      \ifx#1\relax
        \xdef#1{#3}%
      \fi
    }%
  \fi
\expandafter\x\csname ver@grfext.sty\endcsname
\ProvidesPackage{grfext}%
  [2019/12/03 v1.3 Manage graphics extensions (HO)]%
\begingroup\catcode61\catcode48\catcode32=10\relax%
  \catcode13=5 % ^^M
  \endlinechar=13 %
  \catcode123=1 % {
  \catcode125=2 % }
  \catcode64=11 % @
  \def\x{\endgroup
    \expandafter\edef\csname grfext@AtEnd\endcsname{%
      \endlinechar=\the\endlinechar\relax
      \catcode13=\the\catcode13\relax
      \catcode32=\the\catcode32\relax
      \catcode35=\the\catcode35\relax
      \catcode61=\the\catcode61\relax
      \catcode64=\the\catcode64\relax
      \catcode123=\the\catcode123\relax
      \catcode125=\the\catcode125\relax
    }%
  }%
\x\catcode61\catcode48\catcode32=10\relax%
\catcode13=5 % ^^M
\endlinechar=13 %
\catcode35=6 % #
\catcode64=11 % @
\catcode123=1 % {
\catcode125=2 % }
\def\TMP@EnsureCode#1#2{%
  \edef\grfext@AtEnd{%
    \grfext@AtEnd
    \catcode#1=\the\catcode#1\relax
  }%
  \catcode#1=#2\relax
}
\TMP@EnsureCode{42}{12}% *
\TMP@EnsureCode{44}{12}% ,
\TMP@EnsureCode{47}{12}% /
\TMP@EnsureCode{58}{12}% :
\TMP@EnsureCode{60}{12}% <
\TMP@EnsureCode{62}{12}% >
\TMP@EnsureCode{91}{12}% [
\TMP@EnsureCode{93}{12}% ]
\edef\grfext@AtEnd{\grfext@AtEnd\noexpand\endinput}
\@ifundefined{@expandtwoargs}{%
  \def\@expandtwoargs#1#2#3{%
    \edef\reserved@a{\noexpand#1{#2}{#3}}%
    \reserved@a
  }%
}{}
\newcommand*{\AppendGraphicsExtensions}{%
  \@ifundefined{Gin@extensions}{%
    \let\Gin@extensions\@empty
  }{}%
  \@ifstar{\grfext@Append\grfext@Check}{\grfext@Append\grfext@@Add}%
}%
\def\grfext@Append#1#2{%
  \let\grfext@Print\@gobble
  \edef\grfext@next{%
    \noexpand\grfext@Add\noexpand#1{%
      \zap@space#2 \@empty
    }{\noexpand\Gin@extensions,}{}%
  }%
  \grfext@next
  \let\grfext@Print\grfext@@Print
  \grfext@Print\AppendGraphicsExtensions
}
\newcommand*{\PrependGraphicsExtensions}{%
  \@ifundefined{Gin@extensions}{%
    \let\Gin@extensions\@empty
  }{}%
  \@ifstar{\grfext@Prepend\grfext@Check}{\grfext@Prepend\grfext@@Add}%
}%
\def\grfext@Prepend#1#2{%
  \let\grfext@Print\@gobble
  \edef\grfext@next{%
    \noexpand\grfext@Add\noexpand#1{%
      \zap@space#2 \@empty
    }{}{,\noexpand\Gin@extensions}%
  }%
  \grfext@next
  \let\grfext@Print\grfext@@Print
  \grfext@Print\PrependGraphicsExtensions
}
\def\grfext@Add#1#2{%
  #1{#2}%
}
\def\grfext@@Add#1#2#3{%
  \RemoveGraphicsExtensions{#1}%
  \ifx\Gin@extensions\@empty
    \def\Gin@extensions{#1}%
  \else
    \edef\Gin@extensions{#2#1#3}%
  \fi
}
\def\grfext@Check#1{%
  \let\grfext@tmp\@empty
  \@for\grfext@ext:=#1\do{%
    \@ifundefined{Gin@rule@\grfext@ext}{%
    }{%
      \ifx\grfext@tmp\@empty
        \let\grfext@tmp\grfext@ext
      \else
        \edef\grfext@tmp{\grfext@tmp,\grfext@ext}%
      \fi
    }%
  }%
  \ifx\grfext@tmp\@empty
    \def\grfext@next##1##2{}%
  \else
    \edef\grfext@next{%
      \noexpand\grfext@@Add{\grfext@tmp}%
    }%
  \fi
  \grfext@next
}
\newcommand*{\RemoveGraphicsExtensions}[1]{%
  \@ifundefined{Gin@extensions}{%
    \def\Gin@extensions{}%
  }{%
    \edef\grfext@tmp{\zap@space#1 \@empty}%
    \@for\grfext@ext:=\grfext@tmp\do{%
      \def\grfext@next{%
        \let\grfext@tmp\Gin@extensions
        \@expandtwoargs
        \@removeelement\grfext@ext\Gin@extensions\Gin@extensions
        \ifx\grfext@tmp\Gin@extensions
          \let\grfext@next\relax
        \fi
        \grfext@next
      }%
      \grfext@next
    }%
  }%
  \grfext@Print\RemoveGraphicsExtensions
}
\RequirePackage{infwarerr}[2007/09/09]
\def\PrintGraphicsExtensions{%
  \grfext@Print\PrintGraphicsExtensions
}
\def\grfext@Print#1{%
  \@PackageInfo{grfext}{%
    Graphics extension search list:\MessageBreak
    \@ifundefined{Gin@extensions}{%
      <unavailable>%
    }{%
      [\Gin@extensions]%
    }\MessageBreak
    \string#1%
  }%
}
\let\grfext@@Print\grfext@Print
\RequirePackage{kvdefinekeys}[2010/03/01]
\kv@define@key{Gin}{AppendGraphicsExtensions}{%
  \AppendGraphicsExtensions{#1}%
}
\kv@define@key{Gin}{AppendGraphicsExtensions*}{%
  \AppendGraphicsExtensions*{#1}%
}
\kv@define@key{Gin}{PrependGraphicsExtensions}{%
  \PrependGraphicsExtensions{#1}%
}
\kv@define@key{Gin}{PrependGraphicsExtensions*}{%
  \PrependGraphicsExtensions*{#1}%
}
\kv@define@key{Gin}{RemoveGraphicsExtensions}{%
  \RemoveGraphicsExtensions{#1}%
}
\kv@define@key{Gin}{PrintGraphicsExtensions}[]{%
  \PrintGraphicsExtensions
}
\grfext@AtEnd%
\endinput
%%
%% End of file `grfext.sty'.

${this.title}

Code Editor : grfext.sty