mintinline in footnote doesn't resize properly

Question

When setting up the minted environment to use a specific fontsize, it is not correctly resize with the environment.

This is a MWE:

\documentclass{scrbook}
\usepackage[chapter]{minted}
\setminted[c++]{fontsize=\footnotesize}
%% define shortcut
\newcommand{\cd}[1]{\mintinline{c++}{#1}}
\newcommand{\cdfoot}[1]{\mintinline[fontsize=\scriptsize]{c++}{#1}}

\usepackage{scrhack}
\begin{document}

\chapter{one}

regular inline \cd{code}\footnote{footnote \cd{code} (the same size as in text)}

regular inline \cd{code} {\footnotesize \cd{code}} (no difference)

regular inline \cd{code} \cdfoot{code} (this would be expected)

\end{document}

As shown, I can work around the problem by using an extra command, but this is error-prone since the visual difference is rather small and it is easy miss incorrect usage.

Answer 1

You seem to want that \cd uses a context depending font size, namely \footnotesize in normal size and \scriptsize in footnotes (or when \footnotesize is in force).

You're lucky, because scrbook uses 9pt size for \footnotesize, so you can easily use relsize.

\documentclass{scrbook}
\usepackage[chapter]{minted}
\usepackage{relsize}
\usepackage{scrhack}

%% define shortcut
\newcommand{\cd}{\mintinline[fontsize={\smaller}]{c++}}

\textheight=6cm % just to get a smaller picture

\begin{document}

\chapter{one}

regular inline \cd{code}\footnote{footnote \cd{code} (the same size as in text)}

regular inline \cd{code} {\footnotesize footnotesize \cd{code}}

\end{document}