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嵌套环境/项目的自动编号

tag-icon • tag-icon lists numbering environments enumerate nesting
嵌套环境/项目的自动编号

我想要一个环境，我们称之为nested，它产生如下输出

Case 1: top level item 1
Case 2: top level item 2
Case 2.1: nested item 1
Case 2.2: nested item 2
Case 2.2.1: even nestier item 1
Case 2.3: just nested again
Case 3: and toplevel to top it off

从代码中任何一个看起来像嵌套enumerate的，即

\begin{nested}
\item top level item 1
\item top level item 2
      \begin{nested}
      \item nested item 1
      \item nested item 2
            \begin{nested}
            \item even nestier item 1
            \end{nested}
      \item just nested again
      \end{nested}
\item and toplevel to top it off
\end{nested}

或者从看起来像嵌套环境的代码中：

\begin{nested} top level item 1 \end{nested}
\begin{nested} top level item 2 
    \begin{nested} nested item 1 \end{nested}
    \begin{nested} nested item 2 
            \begin{nested} even nestier item 1 \end{nested}
    \end{nested}
    \begin{nested} just nested again \end{nested}
\end{nested}
\begin{nested} and toplevel to top it off \end{nested}

事实上，我根本不关心代码看起来如何，只要案例上的编号是自动完成的即可。然而，我尝试实现上述两种方法，却完全搞不懂。有办法实现这一点吗？

答案1

\documentclass{scrartcl}
\usepackage{enumitem}
\SetLabelAlign{Case}{Case #1:\hfil}
\newlist{nested}{enumerate}{5}
\setlist[nested]{nosep,leftmargin=0pt,labelwidth=*,align=Case,label*=.\arabic*}
\setlist[nested,1]{label=\arabic*}

\begin{document}
\begin{nested}
\item top level item 1
\item top level item 2
      \begin{nested}
      \item nested item 1
      \item nested item 2
            \begin{nested}
            \item even nestier item 1
            \end{nested}
      \item just nested again
      \end{nested}
\item and toplevel to top it off
\end{nested}


\end{document}

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