彩色环境文本

Question

我希望能够使用可选参数（默认为橙色）为文本着色。虽然Something Something不应该着色。

\documentclass{article}
\usepackage{xcolor}

\NewDocumentEnvironment{Statement}{O{}}
  {
    Something Something
  }
  { \vspace{0.3cm} }

\begin{document}

\begin{Statement}
  This text is displayed in color.
\end{Statement}

\end{document}

Answer 1

您只需指定 Orange 作为默认值即可O{}

\usepackage{xcolor}

\NewDocumentEnvironment{Statement}{O{orange}}
  {%
    Something Something \color{#1}%
  }
  { \vspace{0.3cm} }

\begin{document}

\begin{Statement}
  This text is displayed in color.
\end{Statement}

Black
\end{document}

Answer 2

正如大卫卡莱尔所说，环境是一个群体。关闭标记\color{}后不会影响文本\end{statement}。

如果您想要橙色的默认颜色，您只需在定义中声明它并应用\color{#1}所选的颜色（如果没有，它将是橙色）。

看这里 ：

\documentclass{article}
\usepackage{xcolor}

\newenvironment{statement}[1][orange]%
{%
    \color{#1}% other stuff to apply at the start of the environment
}{%
    %%%Stuff here to apply at the end
}
\begin{document}
    This is normal text.
    \begin{statement}
        This text is displayed in color. Default is orange.
    \end{statement}
    
    This is normal text.
    
    \begin{statement}[purple]
        This text is displayed in purple.
    \end{statement}
    
    This is normal text
\end{document}