Cfrgtkky

I have a problem compiling the following minimal example:

documentclass{article}

usepackage{listings}

usepackage{tcolorbox}



begin{document}

begin{center}

    begin{tcolorbox}

        begin{lstlisting}

            alert(123);

        end{lstlisting}



        boom



        begin{enumerate}

            item one

            item two

        end{enumerate}

    end{tcolorbox}

end{center}

end{document}

I cannot reduce anything and don't know if the problem is dedicated to listings, tcolorbox, enumerate or center. (maybe all of them together)

The error is

! LaTeX Error: Something's wrong--perhaps a missing item.



See the LaTeX manual or LaTeX Companion for explanation.

Type  H <return>  for immediate help.

 ...                                              



l.15 ^^I^^I^^Iitem o

                     ne

which is (like most LaTeX errors) not very useful…

The begin{center} confuses tcolorbox besides adding undesirable additional vertical space. Either add leavevmode before begin{tcolorbox} or better use {centering.... } as suggested by @PeterGrill in a comment.

documentclass{article}

usepackage{listings}

usepackage{tcolorbox}



begin{document}



begin{center}leavevmode

begin{tcolorbox}

    begin{lstlisting}

        alert(123);

    end{lstlisting}

    boom

    begin{enumerate}

        item one

        item two

    end{enumerate}

end{tcolorbox}

end{center}



end{document}

Update: removal of borders.

It seems to me that from your own response to your problem that you don't want the listing to be in a visible box. And as with tcolorbox, everything is configurable, just set it up.

• With the skin=empty parameter, nothing is drawn at all: so there is no border (see page 237).


• With the parameter lowerbox=ignored not to display the lower part of the box (see p 24).

It is therefore also possible to set the distances between the content of the listing and the rest of the box, but i did not do.

documentclass{article}

%usepackage{listings}

usepackage[most]{tcolorbox}



begin{document}

begin{center}

    begin{tcolorbox}

        begin{tcblisting}{skin=empty,lowerbox=ignored}

            alert(123);

        end{tcblisting}



        boom



        begin{enumerate}

            item one

            item two

        end{enumerate}

    end{tcolorbox}

end{center}



end{document}

Old answer:

It is possible to use the dispListing environment of the tcolorbox documentation library (see page 465 of the 4.14 manual).

documentclass{article}

%usepackage{listings}

usepackage[most]{tcolorbox}

tcbuselibrary{documentation}

begin{document}

begin{center}

    begin{tcolorbox}

        begin{dispListing}

            alert(123);

        end{dispListing}



        boom



        begin{enumerate}

            item one

            item two

        end{enumerate}

    end{tcolorbox}

end{center}

end{document}

Translated with www.DeepL.com/Translator

Thank's to @AboAmmar , @PeterGrill and @egreg who managed to find out the source of the error namely the center environment.

To get the the tcolorbox centered we can use its center option:

documentclass{article}

usepackage{listings}

usepackage{tcolorbox}



begin{document}



noindenthrulefill % this rule is added to show that the box is actually centered



    begin{tcolorbox}[width=0.75linewidth,center]

        begin{lstlisting}

            alert(123);

        end{lstlisting}



        boom



        begin{enumerate}

            item one

            item two

        end{enumerate}

    end{tcolorbox}



    noindenthrulefill 





end{document}