# Two column minted listing inside tcolorbox

I have a quite long but narrow code I want to typeset inside a tcolorbox. Is it possible to enable a two (or more) column mode inside the box (not break the box and set the parts adjacent). The remaining part of the document is single-column. If possible I would like it to still be floatable if enabled, it doesn't need to be breakable.

EDIT: it seems not to be enough to escape \tcblower from the minted part. I tried it with the listings package and it just broke the layout.

\documentclass{report}
\usepackage{tcolorbox}
\tcbuselibrary{minted}
\usepackage{blindtext}
\begin{document}
\blindtext
\begin{tcblisting}{title=This is source code in another language (XML),
minted language=XML,listing only}
<project
name="Package tcolorbox"
default="documentation"
basedir="."
>
</project>
<project
name="Package tcolorbox"
default="documentation"
basedir="."
>
</project>
<project
name="Package tcolorbox"
default="documentation"
basedir="."
>
</project>
\end{tcblisting}
\blindtext
\end{document}

• Presuming the lines lengths are the same for every line, is there anything wrong with splitting the code manually and just putting two boxes in a listings/minted environment side by side? Or are you looking for a less manual solution? – Nathanael Farley Jan 30 '15 at 12:12
• I would like to still have it in a single tcblisting-box and referenced as a single listing. My current solution are two tcblistings side by side in miniboxes broken by hand. But I don't really like that solution. – Juri Robl Jan 30 '15 at 12:15
• I would obviously prefer a completely automatic solution, but would use a manual too. I don't have that many listings of that kind. – Juri Robl Jan 30 '15 at 12:16

It's not perfect (I personally don't like how the code cuts mid tag) but it should do the job.

Basically, I unpacked the tcblisting environment and added a multicols environment.

\documentclass{report}
\usepackage{tcolorbox}
\tcbuselibrary{minted}
\usepackage{blindtext}
\begin{document}
\blindtext
\begin{tcolorbox}[title=This is source code in another language (XML)]
%add special color box to list of listings
\makeatletter
\makeatother

\begin{multicols}{2}
\begin{minted}{xml}

<project
name="Package tcolorbox"
default="documentation"
basedir="."
>
</project>
<project
name="Package tcolorbox"
default="documentation"
basedir="."
>
</project>
<project
name="Package tcolorbox"
default="documentation"
basedir="."
>
</project>
\end{minted}
\end{multicols}
\end{tcolorbox}
\blindtext
\end{document}


• Of course! Why didn't I think of that. Works great! I defined a new newtcolorbox and copied the formating from my normal newtcblisting and used it's counter with use counter from. – Juri Robl Jan 30 '15 at 12:59
• The one drawback of this approach is that it doesn't come up in list of listings properly (since the title is not a caption), is that a problem? – Nathanael Farley Jan 30 '15 at 13:01
• Nope, that works with the option addtolol from here I am already using. – Juri Robl Jan 30 '15 at 13:05
• That's nice! Updated my answer to include addtolol. – Nathanael Farley Jan 30 '15 at 13:11