% breaks compilation

[Try2Code]

hi!

I encountered a compilation error that seems to get triggered by simple tex comment starting with '%'

\documentclass{beamer}
\usepackage{minted}
\begin{document}
\begin{frame}[fragile]
\frametitle{Python Code listing in Beamer}
\begin{minted}{python}
    print('The sum of {0} and {1} is {2}'.format(num1, num2, sum))
\end{minted}
\end{frame}%                                                                                                                                           
\end{document}

Putting '%' at the end of an existing line (l.6,8,9) leads to an error. putting it to a separate line does not lead to an error. Is this a known limitation? is this a parsing issue? I thought comments like this are normal latex syntax - am I right?

[gpoore]

This appears to be caused by beamer's fragile mode, so I don't believe there anything that minted can do about it. Typically we would expected comments % to work anywhere. However, some environments are specially defined so that nothing is allowed to follow them. I'm not sure if this is a bug, or if this is the way frame combined with fragile is designed (in which case it would be nice to have a better error message, if that's possible).

[Try2Code]

the point is that frames need to be fragile in order to use minted. So the conclusion is to avoid comments like this in frames with source code, right?

[gpoore]

Yes, you can't have comments like this with fragile frames, at least with the way that beamer currently works.

[muzimuzhi]

fancyvrb, which is used by minted to provide verbatim envs, also thinks a % right after \end{Verbatim} is invalid:

\documentclass{article}
\usepackage{fancyvrb}

\begin{document}
\begin{Verbatim}
content
\end{Verbatim}%
\end{document}

will get error

! FancyVerb Error:
  Extraneous input `%\end{}' between \end{Verbatim} and line end

[Try2Code]

Alright - thx a lot for the fast support @gpoore @muzimuzhi