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抑制自身框架环境和 itemize 之间的顶部跳跃

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抑制自身框架环境和 itemize 之间的顶部跳跃

我需要排版一本给定了 定义的书{itemize}，我{framed}使用 添加了环境mdframed。如果里面的第一行{framed}是普通文本，那么一切都很好

normal text

但如果它从环境开始，{itemize}就会有一些我无法删除的额外空间。

itemize

在两种情况下，帧结束前的跳过都是可以的。如果我注释掉{itemize}跳过的重新定义也是可以的。

代码

\documentclass{scrartcl}

\usepackage[latin1]{inputenc}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}

\makeatletter
\renewenvironment{itemize}{%
    \begin{list}{\labelitemi}{%
        \setlength{\itemsep}{\z@}%
        \setlength{\parsep}{\z@}%
        \setlength{\parindent}{1em}%
        \setlength{\labelwidth}{\parindent}
        \setlength{\labelsep}{0pt}
        \setlength{\leftmargin}{\labelwidth+\labelsep}%
        \def\makelabel##1{\rlap{\normalfont\nobreak ##1}\hss}
    }%
}{%
    \end{list}
}


\usepackage[framemethod=TikZ]{mdframed}
\usepackage{xparse}% doesn't work without this package ... ???
\newenvironment{framed}{%
    \begin{mdframed}[%
        skipabove=\baselineskip plus 2pt minus 1pt,
        skipbelow=\baselineskip plus 2pt minus 1pt,
        middlelinewidth=0.5pt,
        splittopskip=8pt,
        splitbottomskip=2pt,
        innertopmargin=9.39749pt,
        innerbottommargin=9.39749pt,
        innerleftmargin=9.39749pt,
        innerrightmargin=9.39749pt,
    ]%
}{%
    \end{mdframed}
}
\makeatother

\usepackage{blindtext}


\begin{document}
\blindtext
\begin{framed}
    \blindtext
\end{framed}
\blindtext
\begin{framed}
    \blinditemize
\end{framed}
\end{document}

我尝试将新定义与以前的定义进行比较source2e，但没有发现导致额外空间的差异。我发现\@minipagetrue诡计但这没有帮助。

问题
如果它开始一个框架，我怎样才能知道{itemize}不要插入空格？

答案1

缺少两个注释符号，从而产生了虚假空格。

\documentclass{scrartcl}

\usepackage[latin1]{inputenc}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}

\makeatletter
\renewenvironment{itemize}{%
    \begin{list}{\labelitemi}{%
        \setlength{\itemsep}{\z@}%
        \setlength{\parsep}{\z@}%
        \setlength{\parindent}{1em}%
        \setlength{\labelwidth}{\parindent}% <-- THIS ONE WAS MISSING
        \setlength{\labelsep}{0pt}% <-- AND THIS ONE, TOO
        \setlength{\leftmargin}{\labelwidth+\labelsep}%
        \def\makelabel##1{\rlap{\normalfont\nobreak ##1}\hss}% <-- Shouldn't harm
    }%
}{%
    \end{list}
}


\usepackage[framemethod=TikZ]{mdframed}
\usepackage{xparse}% doesn't work without this package ... ???
\newenvironment{framed}{%
    \begin{mdframed}[%
        skipabove=\baselineskip plus 2pt minus 1pt,
        skipbelow=\baselineskip plus 2pt minus 1pt,
        middlelinewidth=0.5pt,
        splittopskip=8pt,
        splitbottomskip=2pt,
        innertopmargin=9.39749pt,
        innerbottommargin=9.39749pt,
        innerleftmargin=9.39749pt,
        innerrightmargin=9.39749pt,
    ]%
}{%
    \end{mdframed}
}
\makeatother

\usepackage{blindtext}


\begin{document}
\blindtext
\begin{framed}
    \blindtext
\end{framed}
\blindtext
\begin{framed}
    \blinditemize
\end{framed}
\end{document}

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