列表、计数器和引用

Question

我正在尝试创建一个包含单实例、编号列表的环境（以便我可以轻松控制间距等）。问题是我无法用于\ref交叉引用枚举项。

MWE 的代码是：

\documentclass{article}    
\newcounter{tesisc}
\AtBeginDocument{\setcounter{tesisc}{1}}
\newenvironment*{Tesis}
  {\begin{list}
    {$(\arabic{tesisc})$}
    {\setlength{\rightmargin}{0cm}
     \setlength{\leftmargin}{2\parindent}}
    \item
  }
  {\end{list}\refstepcounter{tesisc}}
\begin{document}
\begin{Tesis}
  Testing testing testing testing testing testing testing testing testing testing.
  \label{th:one}
\end{Tesis}
\begin{Tesis}
  Testing testing testing testing testing testing testing testing testing testing.
  \label{th:two}
\end{Tesis}
This is one reference: \ref{th:one}. This is another reference: \ref{th:two}.
\end{document}

我的环境编号工作正常，但交叉引用则不然。

我怎样才能调整我的定义以便我的参考文献能够发挥作用？

Answer 1

您需要移动\refstepcounter较早的，或者像这里使用\usecounter这样list设置\item来增加计数器。

\documentclass{article}    
\newcounter{tesisc}

\newenvironment*{Tesis}
  {\begin{list}
    {$(\arabic{tesisc})$}
    {\setlength{\rightmargin}{0cm}
     \refstepcounter{tesisc}\setlength{\leftmargin}{2\parindent}}
    \item
  }
  {\end{list}}
\begin{document}
\begin{Tesis}
  Testing testing testing testing testing testing testing testing testing testing.
  \label{th:one}
\end{Tesis}
\begin{Tesis}
  Testing testing testing testing testing testing testing testing testing testing.
  \label{th:two}
\end{Tesis}
This is one reference: \ref{th:one}. This is another reference: \ref{th:two}.
\end{document}