更改 LaTeX 描述环境的悬挂缩进

Question

我正在memoir为一本书使用文档类。它在这样的description环境中格式化项目：

THE TERM has a long definition that may run
      on for quite some time.

我想在不定义新环境的情况下将所有description环境的悬挂缩进减少到 2em （这样我就不必修改我组装成一个整体的任何文件）。我可以在序言中添加哪些命令，或者我可以使用哪些命令来执行此操作？所需的输出是：.tex\renewcommand

THE TERM has a long definition that may run
  on for quite some time.

Answer 1

您可以更新description环境并为\leftmargin.

\documentclass{memoir}

\usepackage{lipsum}

\begin{document}

\lipsum[1]
\begin{description}
  \item[THE TERM]
    has a long definition that may run on for quite some time and break into multiple lines.
\end{description}

\makeatletter
\renewenvironment{description}%
               {\list{}{\leftmargin=10pt % <------- Adjust this length
                        \labelwidth\z@ \itemindent-\leftmargin
                        \let\makelabel\descriptionlabel}}%
               {\endlist}
\makeatother

\lipsum[1]
\begin{description}
  \item[THE TERM]
    has a long definition that may run on for quite some time and break into multiple lines.
\end{description}

\end{document}

上面我descripion使用\renewenvironment（允许您使用相同的命名方案）更改重新定义环境并使用\leftmargin. 更改此设置以满足您的需求。