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I'm having a problem with formatting a tcolorbox so that it contains a table and its width fits the width of the table. A MWE of my code is as follows:

\documentclass{standalone}
\usepackage{booktabs}
\usepackage{tabularx}
\usepackage{colortbl}
\usepackage{array}
\usepackage{tikz}
\usepackage{tcolorbox}
\tcbuselibrary{skins, breakable}

\begin{document}
    \begin{tcolorbox}[skin = enhanced jigsaw, tabularx = {p{2cm}p{3cm}}, capture = hbox, breakable = false, title = {Test}, label = {test}, center]
        \textbf{Column 1} & \textbf{Column 2}\tabularnewline\midrule
        1 & 2\tabularnewline
        3 & 4\tabularnewline
        5 & 6\tabularnewline
    \end{tcolorbox}
\end{document}

LuaLaTeX throws the following errors when trying to compile it:

Argument of \TX@get@body has an extra }. \end{tcolorbox}
Paragraph ended before \TX@get@body was complete. \end{tcolorbox}
Missing } inserted. \end{tcolorbox}

The same code compiles fine without the hbox option but I can't seem to find any information on the incompatibility between it and tabularx. Setting or unsetting explicit table column widths (e.g., with p) has no effect. Please advise.

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  • 1
    please provide a small test document that shows the error, not a fragment. Note that tabularx = {cc} looks wrong, there should always be at least one X column otherwise tabularx can do nothing useful. – David Carlisle Nov 15 '18 at 11:20
  • Added a full MWE. – Arets Paeglis Nov 15 '18 at 11:33
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I'm not sure what the real problem is. Using tabularx without an X column is wrong to begin with.

Perhaps defining a new style modeled on tabularx is what you're looking for:

\documentclass{standalone}
\usepackage{booktabs}
\usepackage{tabularx}
\usepackage{colortbl}
\usepackage{array}
\usepackage{tikz}
\usepackage{tcolorbox}
\tcbuselibrary{skins, breakable}

\makeatletter
\tcbset{
  tabular/.style={
    boxsep=\z@,top=\z@,bottom=\z@,leftupper=\z@,rightupper=\z@,
    toptitle=1mm,bottomtitle=1mm,boxrule=0.5mm,
    before upper={\arrayrulecolor{tcbcol@frame}\def\arraystretch{1.1}%
      \tcb@hack@currenvir\tabular{#1}},
    after upper=\endtabular\arrayrulecolor{black}},
}
\makeatother

\begin{document}

\begin{tcolorbox}[
  skin = enhanced jigsaw,
  tabular = {p{2cm}p{3cm}},
  capture = hbox,
  breakable = false,
  title = {Test},
  label = {test},
  center
]
\textbf{Column 1} & \textbf{Column 2}\tabularnewline\midrule
1 & 2\tabularnewline
3 & 4\tabularnewline
5 & 6\tabularnewline
\end{tcolorbox}

\end{document}

enter image description here

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  • You're right. And thanks, I believe this solves my problem. – Arets Paeglis Dec 16 '18 at 16:02
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What about this:

\documentclass{article}
\usepackage{tcolorbox}
\tcbuselibrary{breakable}
\usepackage{tabularx, colortbl, booktabs}
\begin{document}

\begin{tcolorbox}[tabularx = {XX}, breakable = false, title = {Test}, label = {test}, center]
    \textbf{Column 1} & \textbf{Column 2}\tabularnewline\midrule
    1 & 2\tabularnewline
    3 & 4\tabularnewline
    5 & 6\tabularnewline
\end{tcolorbox}

\noindent X\dotfill X\par
\end{document}

enter image description here

Is this what is asked for ?

\documentclass{standalone}
\usepackage{booktabs}
%\usepackage{tabularx}
\usepackage{colortbl}
\usepackage{array}
\usepackage{tikz}
\usepackage{tcolorbox}
\tcbuselibrary{skins, breakable}

\begin{document}
    \begin{tcolorbox}[skin = enhanced jigsaw, breakable = false,
      capture=hbox, title = {Test}, label = {test}, center]
      \begin{tabular}{p{2cm}p{3cm}}
        \textbf{Column 1} & \textbf{Column 2}\tabularnewline\midrule
        1 & 2\tabularnewline
        3 & 4\tabularnewline
        5 & 6
      \end{tabular}
    \end{tcolorbox}
\end{document}

enter image description here

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6
  • I'm afraid this doesn't solve my problem, since in my actual code the table columns have set widths. – Arets Paeglis Nov 15 '18 at 11:34
  • I don't know what your problem is... – user4686 Nov 15 '18 at 11:35
  • See OP. I can't use the X specifier for my table and that doesn't solve the problem anyway, since it changes column widths instead of the width of the box. – Arets Paeglis Nov 15 '18 at 11:38
  • The edited example is my current fallback solution but it's not optimal since I have to manually fit paddings etc., whereas using the tabularx option "fills" the colorbox with the table and overall seems to provide better integration. – Arets Paeglis Nov 15 '18 at 11:47
  • @AretsPaeglis if you do not use X then use tabular not tabularx, tabularx without an X column can not do anything to achieve the specified width so it will just act like tabular but give underfull box warnings. – David Carlisle Nov 15 '18 at 12:10

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