我想定义一个新的环境来编写练习。此外，我想使用\ref和\nameref（带hyperref包）来构建练习编号和名称表。我写了以下文件。运行\ref良好（它给了我练习的编号），但\nameref给了我该部分的名称，而不是练习名称的名称
\documentclass{article}
\usepackage{hyperref}
\newcounter{exo}
\newenvironment{exo}[1]%
{\refstepcounter{exo}\vspace{0.5cm}\noindent
{\begin{large}\bfseries{Exercice \theexo~: #1} \end{large}} \par}
{\par\vspace{0.5cm}}
\begin{document}
A small example
\section{First degree}
\begin{exo}{First degree equation}\label{exo:first_degree}
Solve the equation~:\[ x+7 = -9 \: . \]
\end{exo}
\section{Second degree}
A little harder\ldots
\begin{exo}{Second degree equation}\label{exo:second_degree}
solve the equation~:\[ x^2 - 2x -3 =0 \: . \]
\end{exo}
\begin{exo}{Another exercise}\label{exo:other_exercise}
solve this equation:\[ -3x^2 +7x-64=0 \: .\]
\end{exo}
And here is a table of the exercices:
\begin{tabular}{|c | c|}
\hline
Number & tile \\
\ref{exo:first_degree} & \nameref{exo:first_degree}\\
\ref{exo:second_degree} &\nameref{exo:second_degree}\\
\ref{exo:other_exercise} &\nameref{exo:other_exercise}\\
\hline
\end{tabular}
\end{document}
答案1
\documentclass{article}
\usepackage{hyperref}
\newcounter{exo}
\makeatletter
\newenvironment{exo}[1]%
{\refstepcounter{exo}%
\protected@edef\@currentlabelname{#1}% addition here
\vspace{0.5cm}\noindent
{\large\bfseries{Exercice \theexo~: #1} \par}
{\par\vspace{0.5cm}}}
\makeatother
\begin{document}
A small example
\section{First degree}
\begin{exo}{First degree equation}\label{exo:first_degree}
Solve the equation~:\[ x+7 = -9 \: . \]
\end{exo}
\section{Second degree}
A little harder\ldots
\begin{exo}{Second degree equation}\label{exo:second_degree}
solve the equation~:\[ x^2 - 2x -3 =0 \: . \]
\end{exo}
\begin{exo}{Another exercise}\label{exo:other_exercise}
solve this equation:\[ -3x^2 +7x-64=0 \: .\]
\end{exo}
And here is a table of the exercices:
\begin{tabular}{|c | c|}
\hline
Number & tile \\
\ref{exo:first_degree} & \nameref{exo:first_degree}\\
\ref{exo:second_degree} &\nameref{exo:second_degree}\\
\ref{exo:other_exercise} &\nameref{exo:other_exercise}\\
\hline
\end{tabular}
\end{document}