在小页面中垂直对齐 \item

Question

我有一个页面，用 分成两列\minipage，每列中\minipage都有一个\begin{enumerate}环境，\item每列包含多个项目。项目标记为 (1)、(2) 等...\item左侧的第一个项目与右侧的\minipage第一个项目相关，两个列表都是如此。但是，每列中的条目长度不同，因此它们不会自动在列中对齐。我希望左列中的 (1) 与右侧的 (1) 对齐，依此类推，无论条目的大小如何，即在项目之间插入适当的垂直空间，以保持列表编号之间的水平对齐。\item\minipage

目前，我正在使用\vspace*{0.Xcm}甚至多次\hbox{}手动\items上下移动以获得我想要的对齐，但这非常耗时且繁琐。

我一直\minipage在 stackexchange 上查看有关对齐的类似问题，但找不到我想要的内容。有没有一种方法可以按照我想要的方式对齐项目？ minipage 是尝试此操作的正确方法吗？还是我应该使用某种表格？

例子：

\documentclass{tufte-book}
\usepackage{enumitem}
\begin{document}
\begin{minipage}[t]{.48\linewidth}%.48\linewidth to give padding between columns
\tb{List 1}
\begin{enumerate}[noitemsep]
\item This is item 1.
\item This is item two and is quite a bit longer than item one, taking up   more than one line. This issue now is that item three in this list will not horizontally align with item 3 in the adjacent list due to the varying linewidth.
\item This is item 3.
\end{minpage}
\begin{minipage}[t]{.48\linewidth}
\tb{List 2}
\begin{enumerate}[noitemsep]
\item This is item 1.
\item This is item 2.
\item this is item 3.
\end{enumerate}
\end{minipage}
\end{document}

Answer 1

您可以使用 \vspace{n\baselineskip} 来对齐两个列表，其中 n 是您想要跳过的行数。笔记- 你的例子语法有误。我假设\tb是，\textbf并\end{minpage}改为\end{minipage}。

这是一个有效的例子-

\documentclass{tufte-book}
\usepackage{enumitem}
\begin{document}
    \begin{minipage}[t]{.48\linewidth}%.48\linewidth to give padding between columns
        \textbf{List 1}
        \begin{enumerate}[noitemsep]
            \item This is item 1.
            \item This is item two and is quite a bit longer than item one, taking up   more than one line. This issue now is that item three in this list will not horizontally align with item 3 in the adjacent list due to the varying linewidth.
            \item This is item 3.
            \end{enumerate}
        \end{minipage}
        \begin{minipage}[t]{.48\linewidth}
            \textbf{List 2}
            \begin{enumerate}[noitemsep]
                \item This is item 1.
                \item This is item 2. \vspace{7\baselineskip}
                \item this is item 3.
            \end{enumerate}
        \end{minipage}
    \end{document}

这导致 -

Answer 2

您可以使用tabular-like 结构来保持元素之间的垂直对齐。这可以通过以下方式轻松实现tabularx：

\documentclass{tufte-book}

\usepackage{tabularx}

\begin{document}

\noindent
\begin{tabularx}{\linewidth}{@{} r X r X @{}}
  \multicolumn{2}{@{} l}{\bfseries List 1} & \multicolumn{2}{l}{\bfseries List 2} \\[\topsep]
  1. & This is item 1. &
  1. & This is item 1. \\
  2. & This is item two and is quite a bit longer than item one, taking up 
       more than one line. This issue now is that item three in this list will 
       not horizontally align with item 3 in the adjacent list due to the varying 
       \verb|\linewidth|. &
  2. & This is item 2. \\
  3. & This is item 3. &
  3. & This is item 3.
\end{tabularx}

\end{document}

您可以手动输入列表枚举，也可以使用特定的列类型自动执行该过程。但是，对于小型列表，这可能不是必需的。

列表间距可以根据具体情况进行管理，也可以统一设置。

Answer 3

如果您想要编写整个第一列，然后编写整个第二列，并且您不想对表格使用特殊标记，那么您的问题是使用\valign原始数据的典型任务：

\newcount\colitemnum
\long\def\twocolitems#1{\hbox{\colitemnum=0
   \def\firstitem##1{\global\advance\colitemnum by1 \llap{(\the\colitemnum)\ }}%
   \def\item{&\firstitem:}%
   \def\nextcol##1{\cr\colitemnum=0 \firstitem:}%
   \hsize=.5\hsize \leftskip=2em \rightskip=1em 
   \valign{&\vtop{\noindent\strut##\unskip\strut}\vfil\cr\firstitem#1\crcr}}}

\twocolitems{
\item This is item 1.
\item This is item two and is quite a bit longer than item one, taking up   more than one line. This issue now is that item three in this list will not horizontally align with item 3 in the adjacent list due to the varying linewidth.
\item This is item 3.
\nextcol
\item This is item 1 and it is quite a bit longer, more than one line.
\item This is item 2.
\item this is item 3.
}

\bye

Answer 4

另一种解决方案基于tabularx和ltablex（因此它可以跨页面），使用 series来自的键enumitem。

我定义了一个新的列类型，E它是X开始和结束enumerate环境的列类型。它接收一个参数，即该列中系列的名称。因为必须有一个初始枚举，定义该系列中，我定义了一个\Ehead命令，将列标题放入这样的枚举中（这些列标题未枚举，使用 item 的可选参数）。

\documentclass[showframe]{tufte-book}%
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{ragged2e}
\usepackage{enumitem}
\usepackage{ltablex, booktabs}
\keepXColumns

 \makeatletter
 \newcommand*{\compress}{\@minipagetrue}
 \makeatother

\newcolumntype{E}[1]{>{\enumerate[#1]}X<{\endenumerate}}

\newcommand\Ehead[2]{\multicolumn{1}{@{}X}{ \begin{enumerate}[series=#1, before = \compress\vspace{-\baselineskip}]
\item[\bfseries #2]
\end{enumerate}}}

\begin{document}

\noindent
\setlist[enumerate] {wide=0pt, label=\arabic*., leftmargin=*, before=\vspace*{-\baselineskip}
  , after =\vspace{-\dimexpr\baselineskip + \partopsep}}
\begin{tabularx}{\linewidth}{@{}E{colA}E{colB}@{}}
  \Ehead{colA}{List 1}
                                                                                   &
  \Ehead{colB}{List 2} \\
  \addlinespace[-2ex]
  \hline
  \item This is item 1. &
  \item This is item 1. \\\hline
  \item This is item two and is quite a bit longer than item one, taking up
  more than one line. This issue now is that item three in this list will
  not horizontally align with item 3 in the adjacent list due to the varying
  \verb|\linewidth|.
                                                                                   &
  \item This is item 2. \\\hline
  \item This is item 3. A longer item3, not so long as item 2 in the right column. &
  \item This is item 3. \\
  \hline
\end{tabularx}

\end{document}