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enumitem描述环境垂直间距

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enumitem描述环境垂直间距

我使用description在中定义的环境枚举项。首先我的代码是：

\documentclass{article}
\usepackage{geometry}
\usepackage{enumitem}
\usepackage{environ}
\usepackage{lipsum}

\newlist{descleft}{description}{1}
\setlist[descleft]{align=parleft, leftmargin=!, labelwidth=4cm, labelsep=1.5em, font=\normalfont\sffamily}

\newlength\widest
\makeatletter
\NewEnviron{descleftind}{%
    \vbox{%
        \global\widest=0pt%
        \def\item[##1]{%
            \settowidth\@tempdima{\textsf{\begin{array}[t]{@{}l@{}}##1\end{array}}}%
            % \settowidth\@tempdima{\textsf{##1}}%
            \ifdim\@tempdima>\widest\relax
            \global\widest=\@tempdima\fi%
        }%
        \setbox0=\vbox{\BODY}%
    }
    \begin{description}[
        align=parleft,
        labelsep=1.5em,
        leftmargin=\dimexpr\widest+2em+0.05\columnwidth\relax,
        labelindent=0.05\columnwidth,
        labelwidth=\dimexpr\widest+0.5em\relax,
%       topsep=0pt,
%       parsep=0pt,
        % partopsep=0pt,
        % itemsep=0pt,
        font=\normalfont\sffamily]
        \BODY
    \end{description}%
}
\makeatother

\begin{document}

\subsubsection{Test 1}

\begin{descleft}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleft}

\subsubsection{Test 2}

\begin{descleftind}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleftind}

\subsubsection{Test 3}
Test line
\begin{descleftind}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleftind}

\end{document}

descleft环境是通过使用提供的宏来定义的枚举项，而在宏descleftind中定义\NewEnviron环境包。由于这两个定义在环境中都没有任何垂直间距选项description，我猜结果至少在垂直间距上没有区别。部分包含whileTest 1的结果并具有的结果。此时奇怪的是部分文本和列表之间有意外的垂直间距。但是，它们之间的文本不会影响间距，如所示。这段代码中发生了什么，我应该怎么做才能消除间距？我猜宏有关键。descleftTest 2Test 3descleftindTest 2Test 3\vbox

在此处输入图片描述

编辑：我目前正在使用一种临时方法，使用以下方法分配手动间距\vspace：

\NewEnviron{descrightind}[1][0pt]{%
    \vspace{#1}
    \vbox{
        \global\widest=0pt%
        \def\item[##1]{%
            \settowidth\@tempdima{\textsf{\begin{tabular}[t]{@{}l@{}}##1\end{tabular}}}%
            \ifdim\@tempdima>\widest\relax
            \global\widest=\@tempdima\fi%
        }%
        \setbox0=\vbox{\BODY}%
    }
    \begin{description}[
        align=parright,
        labelsep=1.5em,
        leftmargin=\dimexpr\widest+2em+0.05\columnwidth\relax,
        labelindent=0.05\columnwidth,
        labelwidth=\dimexpr\widest+0.5em\relax,
        font=\normalfont\sffamily]
        \BODY
    \end{description}%
}

例如，

\subsubsection{Test 3}
Test line
\begin{descleftind}[-2em]
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleftind}

答案1

您正在排版\vbox。不要。

\documentclass{article}
\usepackage{geometry}
\usepackage{enumitem}
\usepackage{environ}
\usepackage{lipsum}

\newlist{descleft}{description}{1}
\setlist[descleft]{
  align=parleft,
  leftmargin=!,
  labelwidth=4cm,
  labelsep=1.5em,
  font=\normalfont\sffamily
}

\newlength\widest
\makeatletter
\NewEnviron{descleftind}{%
    \setbox0=\vbox{%
        \global\widest=0pt%
        \def\item[##1]{%
            \settowidth\@tempdima{\textsf{\begin{tabular}{@{}l@{}}##1\end{tabular}}}%
            % \settowidth\@tempdima{\textsf{##1}}%
            \ifdim\@tempdima>\widest\relax
            \global\widest=\@tempdima\fi%
        }%
        \BODY
    }
    \begin{description}[
        align=parleft,
        labelsep=1.5em,
        leftmargin=\dimexpr\widest+2em+0.05\columnwidth\relax,
        labelindent=0.05\columnwidth,
        labelwidth=\dimexpr\widest+0.5em\relax,
%       topsep=0pt,
%       parsep=0pt,
        % partopsep=0pt,
        % itemsep=0pt,
        font=\normalfont\sffamily]
        \BODY
    \end{description}%
}
\makeatother

\begin{document}

\subsubsection{Test 1}

\begin{descleft}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleft}

\subsubsection{Test 2}

\begin{descleftind}
\item[Short] \lipsum[1-7][1-2]
\item[A really really \\ long label] \lipsum[1-7][3-4]
\end{descleftind}

\subsubsection{Test 3}
Test line
\begin{descleftind}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleftind}

\end{document}

在此处输入图片描述

避免在一次性文件中排版主体的版本\vbox：

\documentclass{article}
\usepackage{geometry}
\usepackage{enumitem}
\usepackage{lipsum}

\newlist{descleft}{description}{1}
\setlist[descleft]{
  align=parleft,
  leftmargin=!,
  labelwidth=4cm,
  labelsep=1.5em,
  font=\normalfont\sffamily
}

\ExplSyntaxOn

\NewDocumentEnvironment{descleftind}{O{}+b}
 {
  \hermis_descleftind:nn { #1 } { #2 }
 }
 {}

\dim_new:N \l__hermis_descleftind_label_dim
\seq_new:N \l__hermis_descleftind_items_seq

\cs_new_protected:Nn \hermis_descleftind:nn
 {
  % let's measure the labels
  \dim_zero:N \l__hermis_descleftind_label_dim
  \seq_set_split:Nnn \l__hermis_descleftind_items_seq { \item } { #2 }
  % the first item would be empty
  \seq_pop_left:NN \l__hermis_descleftind_items_seq \l_tmpa_tl
  % measure the widest label
  \seq_map_function:NN \l__hermis_descleftind_items_seq \__hermis_descleftind_measure:n
  % now typeset
  \begin{description}[
        align=parleft,
        labelsep=1.5em,
        leftmargin=\dim_eval:n { \l__hermis_descleftind_label_dim+2em+0.05\columnwidth },
        labelindent=0.05\columnwidth,
        labelwidth=\dim_eval:n { \l__hermis_descleftind_label_dim+0.5em },
%       topsep=0pt,
%       parsep=0pt,
        % partopsep=0pt,
        % itemsep=0pt,
        font=\normalfont\sffamily,
        #1 % you may want to override some parameters
  ]
  #2
    \end{description}
 }

\cs_new_protected:Nn \__hermis_descleftind_measure:n
 {
  \__hermis_descleftind_measure:w #1 \q_stop
 }

\cs_new_protected:Npn \__hermis_descleftind_measure:w [ #1 ] #2 \q_stop
 {
  \hbox_set:Nn \l_tmpa_box { \sffamily \begin{tabular}{@{}l@{}}#1\end{tabular} }
  \dim_set:Nn \l__hermis_descleftind_label_dim
   {
    \dim_max:nn { \l__hermis_descleftind_label_dim } { \box_wd:N \l_tmpa_box }
   }
 }

\ExplSyntaxOff

\begin{document}

\subsubsection{Test 1}

\begin{descleft}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleft}

\subsubsection{Test 2}

\begin{descleftind}
\item[Short] \lipsum[1-7][1-2]
\item[A really really \\ long label] \lipsum[1-7][3-4]
\end{descleftind}

\subsubsection{Test 3}
Test line
\begin{descleftind}
\item[Short] \lipsum[1-7][1-2]
\item[A really really long label] \lipsum[1-7][3-4]
\end{descleftind}

\end{document}

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