\mintinline double-renders # symbol in footnote

Question

I'm using minted to display inline code in a footnote. For some reason the # symbol is rendered twice. This does not happen outside of footnotes.

\footnote{bla bla \mintinline{python}{x = 5 # text} and so on}

Answer 1

As stated in the first footnote on page 8 of minted documentation,

The command (\mintinline) has been carefully crafted so that in most cases it will function correctly when used inside other commands.¹

¹ For example, \mintinline works in footnotes! The main exception is when the code contains the percent % or hash # characters, or unmatched curly braces.

The following trick tries to handle #:

\documentclass{article}
\usepackage{minted}

\makeatletter
\let\footnote@orig\footnote
\def\footnote{%
  \begingroup
  \@makeother\#%
  \footnote@i
}
% added \long to accept multi-para footnotes
\long\def\footnote@i#1{%
  \endgroup
  \footnote@orig{#1}%
}
\makeatother

\begin{document}
content\footnote{bla bla \mintinline{python}{x = 5 # text} and so on}
\end{document}

Updates:

• Apr 3, 2022 Made \footnote@i long, cf @cgnieder 's comment.

Answer 2

For information, if you use the package piton in order to format Python listings, you won't have this problem (however \piton works only with LuaLaTeX).

\documentclass{article}
\usepackage{xcolor}
\usepackage{piton}

\begin{document}

Some text.\footnote{bla bla \piton{x = 5 # text} and so on}

\end{document}

The colors are the colors are the style manni of Pygments (and minted).

Answer 3

I had a similar problem with double-hash rendering in beamer slides. Adding the attribute fragile to the frame solved my problem.