# Paragraph breaks inside tcolorbox

I have a document full of nicely formatted and separated paragraphs (each separated by two line breaks in the source), which is working nicely. Now I'd like to put some of them into a tcolorbox.

But when the text is inside a tcolorbox, all paragraph breaks are replaced by simple line breaks!

Is there a way I can get normal formatting inside a tcolorbox?

MWE (I'd like the first three and last three paragraphs formatted the same):

\documentclass{article}
\usepackage{tcolorbox}
\usepackage{lipsum}

\setlength{\parskip}{1em}

\begin{document}

\begin{tcolorbox}
\lipsum[1]

\lipsum[2]

\lipsum[3]
\end{tcolorbox}

\lipsum[4]

\lipsum[5]

\lipsum[6]
\end{document}

• Looks like tcolorbox redefines \parskip, but adding it inside the tcolorbox, e.g. after \begin{tcolorbox}, fixes the issue. – user121799 Nov 14 '18 at 3:05
• @marmot So it does! Is there a way to automatically prepend that to every one of my tcolorboxes? If so that would make a good answer, and I'd accept. – Draconis Nov 14 '18 at 3:06
• Whether you separate your paragraphs in the source by one or by twenty-seven blank lines will change nothing in the output. – thymaro Nov 14 '18 at 3:08

You can set the parbox key to false:

\documentclass{article}
\usepackage{tcolorbox}
\usepackage{lipsum}

\setlength{\parskip}{1em}

\begin{document}

\begin{tcolorbox}[parbox=false]
\lipsum[1]

\lipsum[2]

\lipsum[3]
\end{tcolorbox}

\lipsum[4]

\lipsum[5]

\lipsum[6]
\end{document}


I cannot give you an answer that works for all imaginable tcolorbox variations as these can have upper and lower and you-know-not parts (I'm exaggerating a bit, I know;-). However, for your simple scenario one way to smuggle the desired \parskip (or whatever setting) inside the tcolorbox is to say \tcbset{before upper=\setlength{\parskip}{1em}}. Whether or not a more universal way exists, I don't know.

\documentclass{article}
\usepackage{tcolorbox}
\usepackage{lipsum}

\setlength{\parskip}{1em}
\tcbset{before upper=\setlength{\parskip}{1em}}
\begin{document}

\begin{tcolorbox}
\lipsum[1]

\lipsum[2]

\lipsum[3]
\end{tcolorbox}

\lipsum[4]

\lipsum[5]

\lipsum[6]
\end{document}