support for Appendix package to get a title over the appendices

tex/header/stdmath.sty

@@ -109,6 +109,14 @@ exponent-product=\cdot]{siunitx}  % provides nice typesetting for units and numb
    pdfencoding=auto
   ]{hyperref}
 %\parindent0.0em % = Einrueckungsweite des ersten Satzes eines Absatzes
+% is necessary to let babel work with appendix:
+% see https://tex.stackexchange.com/a/67636
+\RequirePackage{bookmark}
+\RequirePackage[toc,page]{appendix}
+\ifopt@german \renewcommand{\appendixpagename}{Anhänge}
+  \renewcommand{\appendixname}{Anhang}
+  \renewcommand{\appendixtocname}{Anhänge}
+\fi
 
 % ---------------------------------------------------------------
 % Custom commands, rougly grouped

tex/main.tex

@@ -5,6 +5,8 @@
 \author{Felix Hilsky}
 \maketitle
 % use \textinput as described in /header and _TEMPLATE
-\appendix
+\begin{appendices}
+  % \textinput{some-appendix-section}
+\end{appendices}
 % use \textinput as described in /header and _TEMPLATE
 \docEnd