如何在描述环境中创建页面的水平虚线长度

Question

我想使用该包创建一条与页边距长度相同的水平虚线arydshln。我读过这但使用时\hdashline[1pt/2pt]出现错误。我应该如何\hdashline在描述环境中实现才能获得相同的结果。（它需要在描述环境中）

我的代码是：

\documentclass{article}
\usepackage{lipsum,comment,arydshln}
\author{something}
\title{something}
\begin{document}
    \maketitle
    \begin{description}
        \item[something] \lipsum[20]
        \noindent\makebox[\linewidth]{\rule{\textwidth}{1pt}}
        \begin{comment}
            need a dashline here but I don't know how to implement \hdashline[1pt/2pt] here. Moreover, I need the line to cover the page from margin to margin. This doesn't achieve this
        \end{comment}
        \item[something] \lipsum[20]
    \end{description}
    \lipsum[20]
\end{document}

我意识到我可以使用\hdashrule[0.5ex][c]{\linewidth}{1pt}{2pt}但这并不覆盖从边距到边距的页面。

Answer 1

dashrule您可以通过以下软件包和简单的方法获取它\makebox：

\documentclass{article}
\usepackage{lipsum,comment, dashrule}
\author{someone}
\title{something}

\begin{document}

    \maketitle
    \begin{description}
        \item[something] \lipsum[20]
        \vspace{-1ex}\makebox[\linewidth][r]{\hdashrule[1ex][x]{\textwidth}{0.4pt}{1pt 2pt}}
        \item[something else] \lipsum[20]
    \end{description}
    \lipsum[20]

\end{document} 

Answer 2

使用\leaders和\hfill您可以自己创建虚线。我们必须自己跳到左边距，因为否则线条将从描述文本的缩进宽度开始（因此我们使用\hskip\itemindent）：

\documentclass{article}
\usepackage{lipsum,comment,arydshln}
\author{something}
\title{something}
\newcommand*\descriptiondashsep
  {%
    \par\noindent
    \hskip\itemindent
    {\leaders\hbox{\rule{2pt}{.4pt}\hskip1pt}\hfill\hskip-1pt}%
    \null
  }
\begin{document}
\maketitle
\begin{description}
  \item[something] \lipsum[20]
  %\noindent\makebox[\linewidth]{\rule{\textwidth}{1pt}}
  \descriptiondashsep
  % need a dashline here but I don't know how to implement \hdashline[1pt/2pt]
  % here. Moreover, I need the line to cover the page from margin to margin.
  % This doesn't achieve this
  \item[something] \lipsum[20]
\end{description}
\lipsum[20]
\end{document}