\ProvidesPackage{libertineRoman}[%
 2023/11/26 (Bob Tennent) Supports Libertine Roman fonts for all LaTeX engines.] 

\RequirePackage{ifxetex,ifluatex,xkeyval,textcomp}

\newif\iflibertine@otf
\ifxetex
  \libertine@otftrue
\else\ifluatex
  \libertine@otftrue
\else  % [pdf]LaTeX
  \libertine@otffalse
\fi\fi

\newif\iflibertine@lining \libertine@liningtrue          % NEW
\newif\iflibertine@tabular \libertine@tabulartrue        % NEW
\newif\iflibertine@semibold \libertine@semiboldfalse

\def\libertine@newfigdefaults{%
\PackageWarningNoLine{libertine}{%
  ****************************************\MessageBreak
   Figure defaults are now: lining, tabular; \MessageBreak
   for options, see the documentation. \MessageBreak
  ****************************************}
}
\DeclareOptionX{type1}[true]{%
\@nameuse{if#1}\libertine@otffalse\fi
}
\DeclareOptionX{nofontspec}[true]{%
\@nameuse{if#1}\libertine@otffalse\fi
}
\DeclareOptionX{lining}[true]{%
\@nameuse{libertine@lining#1}
\iflibertine@lining\libertine@newfigdefaults\fi
}
\DeclareOptionX{nf}[true]{%
\@nameuse{libertine@lining#1}
\iflibertine@lining\libertine@newfigdefaults\fi
}
\DeclareOptionX{lf}[true]{%
\@nameuse{libertine@lining#1}
\iflibertine@lining\libertine@newfigdefaults\fi
}
\DeclareOptionX{oldstyle}[true]{%
\@nameuse{if#1}%
  \libertine@liningfalse
\else
  \libertine@liningtrue
\fi
\iflibertine@lining\libertine@newfigdefaults\fi
}
\DeclareOptionX{osf}[true]{%
\@nameuse{if#1}%
  \libertine@liningfalse
\else
  \libertine@liningtrue
\iflibertine@lining\libertine@newfigdefaults\fi
\fi
}
\DeclareOptionX{tabular}[true]{%
\@nameuse{libertine@tabular#1}
\iflibertine@tabular\libertine@newfigdefaults\fi
}
\DeclareOptionX{t}[true]{%
\@nameuse{libertine@tabular#1}
\iflibertine@tabular\libertine@newfigdefaults\fi
}
\DeclareOptionX{proportional}[true]{%
\@nameuse{if#1}%
  \libertine@tabularfalse
\else
  \libertine@tabulartrue
\fi
\iflibertine@tabular\libertine@newfigdefaults\fi
}
\DeclareOptionX{p}[true]{%
\@nameuse{if#1}%
  \libertine@tabularfalse
\else
  \libertine@tabulartrue
\fi
\iflibertine@tabular\libertine@newfigdefaults\fi
}

\DeclareOptionX{semibold}[true]{%
\@nameuse{libertine@semibold#1}
}
\DeclareOptionX{sb}[true]{%
\@nameuse{libertine@semibold#1}
}
\DeclareOptionX{bold}[true]{%
\@nameuse{if#1}\libertine@semiboldfalse\else\libertine@semiboldtrue\fi
}

\newcommand*{\LinuxLibertineT@scale}{1}  
\newcommand*{\LinuxLibertineDisplayT@scale}{1} 
\newcommand*{\LinuxLibertineInitialsT@scale}{1}  

\DeclareOptionX{defaultfeatures}{\def\libertine@defaultfeatures{#1}}
\def\libertine@defaultfeatures{}

\ProcessOptionsX\relax

\iflibertine@otf
  \iflibertine@lining
    \def\libertine@figurestyle{Lining}
  \else
    \def\libertine@figurestyle{OldStyle}
  \fi
  \iflibertine@tabular
    \def\libertine@figurealign{Monospaced} 
  \else
    \def\libertine@figurealign{Proportional} 
  \fi
  \iflibertine@semibold
     \def\libertine@boldstyle{RZ} 
  \else
    \def\libertine@boldstyle{RB} 
  \fi

\else % type1

  \iflibertine@lining
    \def\libertine@figurestyle{LF} 
  \else
    \def\libertine@figurestyle{OsF} 
  \fi
  \iflibertine@tabular
    \def\libertine@figurealign{T} 
  \else
    \def\libertine@figurealign{} 
  \fi
  \iflibertine@semibold
    \def\bfseries@rm{sb}
  \else
    \def\bfseries@rm{b}
  \fi
\fi


\iflibertine@otf
  \RequirePackage{fontspec}
\else
  \RequirePackage{mweights}
  \RequirePackage{fontenc,fontaxes}
\fi

% Set main and/or sans and mono fonts:

\iflibertine@otf

  \def\libertine@base{LinLibertine}
  \defaultfontfeatures{
     Ligatures = TeX ,
     Extension = .otf ,
     SmallCapsFeatures={Letters=SmallCaps} ,
     \libertine@defaultfeatures
  }
    \setmainfont
          [ Numbers = {\libertine@figurealign,\libertine@figurestyle},
            UprightFont    = *_R,
            ItalicFont     = *_RI,
            BoldFont       = *_\libertine@boldstyle, 
            BoldItalicFont = *_\libertine@boldstyle I,
          ] {\libertine@base}
  \newfontfamily\libertine
        [ Numbers = {\libertine@figurealign,\libertine@figurestyle},
          UprightFont    = *_R,
          ItalicFont     = *_RI,
          BoldFont       = *_\libertine@boldstyle, 
          BoldItalicFont = *_\libertine@boldstyle I,
        ] {\libertine@base}
  \newfontfamily\libertineSB
        [ Numbers = {\libertine@figurealign,\libertine@figurestyle},
          UprightFont    = *_RZ,
          ItalicFont     = *_RZI,
          BoldFont       = *_\libertine@boldstyle, 
          BoldItalicFont = *_\libertine@boldstyle I,
        ] {\libertine@base}
  \newfontfamily\libertineOsF
        [ Numbers = {\libertine@figurealign,OldStyle},
          UprightFont    = *_R,
          ItalicFont     = *_RI,
          BoldFont       = *_\libertine@boldstyle, 
          BoldItalicFont = *_\libertine@boldstyle I,
        ] {\libertine@base}
  \newfontfamily\libertineLF
        [ Numbers = {\libertine@figurealign,Lining},
          UprightFont    = *_R,
          ItalicFont     = *_RI,
          BoldFont       = *_\libertine@boldstyle, 
          BoldItalicFont = *_\libertine@boldstyle I,
        ] {\libertine@base}
  \newfontfamily\libertineDisplay
        [ Numbers = {\libertine@figurealign,\libertine@figurestyle},
          UprightFont    = *_DR,
          ItalicFont     = *_RI,
          BoldFont       = *_\libertine@boldstyle, 
          BoldItalicFont = *_\libertine@boldstyle I,
        ] {\libertine@base}
  \newfontface\libertineInitial{\libertine@base _I}

  \providecommand\sufigures{\addfontfeatures{VerticalPosition=Superior}}

\else % type1

  \edef\libertine@family{LinuxLibertineT-\libertine@figurealign\libertine@figurestyle}

  \def\rmdefault{\libertine@family} 
  \providecommand*\libertine{\fontfamily{\libertine@family}\selectfont}
  \providecommand*\libertineSB{\fontfamily{\libertine@family}\fontseries{sb}\selectfont}
  \providecommand*\libertineOsF{\fontfamily{LinuxLibertineT-\libertine@figurealign OsF}\selectfont}
  \providecommand*\libertineLF{\fontfamily{LinuxLibertineT-\libertine@figurealign LF}\selectfont}
  \providecommand*\libertineDisplay{\fontfamily{LinuxLibertineDisplayT-\libertine@figurealign\libertine@figurestyle}\selectfont}
  \providecommand*\libertineInitial{\fontfamily{LinuxLibertineInitialsT-\libertine@figurealign\libertine@figurestyle}\selectfont}

  \fa@naming@exception{figures}{{superior}{proportional}}{Sup}
  \fa@naming@exception{figures}{{superior}{tabular}}{Sup}
  \def\sufigures{\@nomath\sufigures\fontfigurestyle{superior}\selectfont}

\fi
\DeclareTextFontCommand{\textsu}{\sufigures}
\let\textsuperior\textsu

% Define \oldstylenums[f] and \liningnums[f]

\iflibertine@otf
    \DeclareTextFontCommand{\oldstylenums}{\addfontfeatures{Numbers=OldStyle}}
    \DeclareTextFontCommand{\liningnums}{\addfontfeatures{Numbers=Lining}}
\else % type1
      \DeclareTextFontCommand{\oldstylenums}{\libertineOsF}
      \DeclareTextFontCommand{\liningnums}{\libertineLF}
      \DeclareTextFontCommand{\oldstylenumsf}{\sffamily\oldstylenums}
      \DeclareTextFontCommand{\liningnumsf}{\sffamily}
\fi

% Define \tabularnums[f] and \proportionalnums[f]

\iflibertine@otf
    \DeclareTextFontCommand{\tabularnums}{\addfontfeatures{Numbers=Tabular}}
    \DeclareTextFontCommand{\proportionalnums}{\addfontfeatures{Numbers=Proportional}}
\else % type1
    \DeclareTextFontCommand{\tabularnums}{\fontfamily{LinuxLibertineT-T\libertine@figurestyle}\selectfont}
    \DeclareTextFontCommand{\proportionalnums}{\fontfamily{LinuxLibertineT-\libertine@figurestyle}\selectfont}
\fi

\iflibertine@otf
  \def\lib@fxl{LinLibertine_R}
  \def\lib@fxi{LinLibertine_I}

  \providecommand*\DeclareTextGlyphY[3]{%
      % \DeclareTextGlyphY{fxl}{s_t}{64262}
      % #1=basefont #2=glyphname, #3=position
      \def\lib@temp{#1}%
      \ifx\lib@temp\lib@fxl \@namedef{#1@#2}{{\libertine\char#3\relax}}\else%
            \ifx\lib@temp\lib@fxi \@namedef{#1@#2}{{\libertineInitial\char#3\relax}}\else%
      \fi\fi}
  %
  \input{LinLibertine_R}
  \input{LinLibertine_I}
  %
  \DeclareRobustCommand*\libertineGlyph[1]{\@nameuse{LinLibertine_R@#1}}
  \DeclareRobustCommand*\libertineInitialGlyph[1]{\@nameuse{LinLibertine_I@#1}}
  \DeclareTextFontCommand{\textsup}{\sufigures}

\else %type1
  
  \def\lib@ini{LinLibertine_I}
  \providecommand*\DeclareTextGlyphY[3]{%
      % \DeclareTextGlyphY{fxl}{s_t}{64262}
      % #1=basefont #2=glyphname, #3=position
      \def\lib@temp{#1}%
      \ifx\lib@temp\lib@ini \@namedef{#1@#2}{{\libertineInitial\char#3\relax}}\else%
      \fi}
  %
  \input{LinLibertine_I}
  %
  \DeclareRobustCommand*\libertineInitialGlyph[1]{\@nameuse{LinLibertine_I@#1}}

\fi

\iflibertine@otf
% turn off defaults in case other fonts are selected:
  \defaultfontfeatures{}
\fi

\endinput