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diff --git a/Master/texmf-dist/source/latex/beamertheme-metropolis/beamerfontthememetropolis.dtx b/Master/texmf-dist/source/latex/beamertheme-metropolis/beamerfontthememetropolis.dtx
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+% \iffalse meta-comment -------------------------------------------------------
+% Copyright 2015 Matthias Vogelgesang and the LaTeX community. A full list of
+% contributors can be found at
+%
+%     https://github.com/matze/mtheme/graphs/contributors
+%
+% and the original template was based on the HSRM theme by Benjamin Weiss.
+%
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/).
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<driver> \ProvidesFile{beamerfontthememetropolis.dtx}
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerfontthememetropolis}[2015/12/04 Metropolis font theme]
+%</package>
+%<driver> \documentclass{ltxdoc}
+%<driver> \usepackage{beamerfontthememetropolis}
+%<driver> \begin{document}
+%<driver> \DocInput{beamerfontthememetropolis.dtx}
+%<driver> \end{document}
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+% \subsection{\textsc{metropolis} font theme}
+%
+%
+% Load required packages.
+%    \begin{macrocode}
+\RequirePackage{etoolbox}
+\RequirePackage{ifxetex}
+\RequirePackage{ifluatex}
+%    \end{macrocode}
+%
+% \subsubsection{Load Fira font}
+% If the presentation is compiled with XeLaTeX or LuaLaTeX the fontspec package
+% will be loaded.
+%    \begin{macrocode}
+\ifboolexpr{bool {xetex} or bool {luatex}}{
+  \RequirePackage[no-math]{fontspec}
+%    \end{macrocode}
+%
+% To simplify the check whether the |Fira| fonts are installed, a set macros is
+% defined.
+%
+% \begin{macro}{\checkfont}
+% Checks if a font is installed and increases |fontsnotfound| counter if not.
+%    \begin{macrocode}
+  \newcounter{fontsnotfound}
+  \newcommand{\checkfont}[1]{%
+    \suppressfontnotfounderror=1%
+    \font\x = "#1" at 10pt
+    \selectfont
+    \ifx\x\nullfont%
+      \stepcounter{fontsnotfound}%
+    \fi%
+    \suppressfontnotfounderror=0%
+  }
+
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\iffontexists}
+% Resets the |fontsnotfound| counter and calls |\checkfont| for each font in
+% the comma separated list in the first argument.
+%    \begin{macrocode}
+  \newcommand{\iffontsexist}[3]{%
+    \setcounter{fontsnotfound}{0}%
+    \expandafter\forcsvlist\expandafter%
+    \checkfont\expandafter{#1}%
+    \ifnum\value{fontsnotfound}=0%
+      #2%
+    \else%
+      #3%
+    \fi%
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% Using the previously defined macros it is tried to load the |Fira| fonts.
+% First the default |Fira| name will be tried. Second the |Fira| fonts with
+% the suffix OT -- used by some Linux distributions -- will be tried. If this
+% also fails a warning will be displayed and the standard fonts will be used.
+%
+%    \begin{macrocode}
+  \iffontsexist{Fira Sans Light,%
+                Fira Sans Light Italic,%
+                Fira Sans,%
+                Fira Sans Italic}{%
+    \setsansfont[BoldFont={Fira Sans}]{Fira Sans Light}%
+  }{%
+    \iffontsexist{Fira Sans Light OT,%
+                  Fira Sans Light Italic OT,%
+                  Fira Sans OT,%
+                  Fira Sans Italic OT}{%
+      \setsansfont[BoldFont={Fira Sans OT}]{Fira Sans Light OT}%
+    }{%
+      \PackageWarning{beamerthememetropolis}{%
+        Could not find Fira Sans fonts%
+      }
+    }
+  }
+  \iffontsexist{Fira Mono, Fira Mono Bold}{%
+    \setmonofont{Fira Mono}%
+  }{%
+    \iffontsexist{Fira Mono OT, Fira Mono Bold OT}{%
+      \setmonofont{Fira Mono OT}%
+    }{%
+      \PackageWarning{beamerthememetropolis}{%
+        Could not find Fira Mono fonts%
+      }
+    }
+  }
+  \AtBeginEnvironment{tabular}{%
+    \addfontfeature{Numbers={Monospaced}}%
+  }
+}{%
+  \PackageWarning{beamerthememetropolis}{%
+    You need to compile with XeLaTeX or LuaLaTeX to use the Fira fonts%
+  }
+}
+%    \end{macrocode}
+%
+%
+%
+% \subsubsection{General font definitions}
+%
+%    \begin{macrocode}
+\setbeamerfont{title}{size=\Large,%
+                      series=\bfseries}
+\setbeamerfont{author}{size=\small}
+\setbeamerfont{date}{size=\small}
+\setbeamerfont{section title}{size=\Large,%
+                              series=\bfseries}
+\setbeamerfont{plain title}{size=\Large,%
+                            series=\bfseries}
+\setbeamerfont{block title}{size=\normalsize,%
+                            series=\bfseries}
+\setbeamerfont{block title alerted}{size=\normalsize,%
+                                    series=\bfseries}
+\setbeamerfont*{subtitle}{size=\large}
+\setbeamerfont{frametitle}{size=\large,%
+                           series=\bfseries}
+\setbeamerfont{caption}{size=\small}
+\setbeamerfont{caption name}{series=\bfseries}
+\setbeamerfont{description item}{series=\bfseries}
+\setbeamerfont{page number in head/foot}{size=\scriptsize}
+\setbeamerfont{bibliography entry author}{size=\normalsize,%
+                                          series=\normalfont}
+\setbeamerfont{bibliography entry title}{size=\normalsize,%
+                                         series=\bfseries}
+\setbeamerfont{bibliography entry location}{size=\normalsize,%
+                                            series=\normalfont}
+\setbeamerfont{bibliography entry note}{size=\small,%
+                                        series=\normalfont}
+%    \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput