考虑以下示例，
\documentclass{book}
\textheight=8in
\usepackage{xcolor}
\usepackage{pgfpages}
\pgfpagesuselayout{2 on 1}
\begin{document}
\LARGE
\thispagestyle{empty}
\begin{center}
\textbf{\textcolor{blue}{How to Prevent an Item from Splitting Across Two Pages?}}
\end{center}
\vskip 35pt
\Large
\begin{enumerate}
\setlength\itemsep{1em}
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item Enough.
\end{enumerate}
\end{document}
如您所见，第六项跨越两页：
我宁愿这种事不发生。
我认为，也许一个简单的解决方案可能是\raggedbottom在之后的某个地方添加命令\begin{document}，但我无法让它发挥作用。
我的实际文档有数百个项目，分布在数百页以上，如果可能的话，我会喜欢 Latex (Pdflatex) 来防止项目被分成两页。 (我希望尝试处理这可能导致的以后增加的空白。)
问题：是否有一种简单的方法可以修改上述代码，使文档的任何页面都不会包含跨两页拆分的项目？我在这个网站上遇到过类似的拆分问题，但它们要么没有答案，要么（我记得）答案相当复杂。
有没有简单的方法可以实现这一点？
谢谢。
答案1
避免行间分页，并允许项目之间的空间伸展
\documentclass{book}
\textheight=8in
\usepackage{xcolor}
\usepackage{pgfpages}
\pgfpagesuselayout{2 on 1}
\begin{document}
\LARGE
\thispagestyle{empty}
\begin{center}
\textbf{\textcolor{blue}{How to Prevent an Item from Splitting Across Two Pages?}}
\end{center}
\vspace{35pt}
\Large
\begin{enumerate}
\setlength\itemsep{1em plus 1fil}
\interlinepenalty=10000
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.
\item Enough.
\end{enumerate}
\end{document}
答案2
这使用了牢不可破的盒子。
\documentclass{book}
\textheight=8in
\usepackage{xcolor}
\usepackage{pgfpages}
\pgfpagesuselayout{2 on 1}
\newcommand{\myitem}[1]{\par\vskip\itemsep\stepcounter{enumi}%
\noindent\makebox[\labelwidth][r]{\theenumi.}\hspace{\labelsep}%
\parbox[t]{\dimexpr \textwidth-\labelwidth-\labelsep}{#1}\par}
\begin{document}
\LARGE
\thispagestyle{empty}
\begin{center}
\textbf{\textcolor{blue}{How to Prevent an Item from Splitting Across Two Pages?}}
\end{center}
\vskip 35pt
\Large
\begin{enumerate}
\setlength\itemsep{1em}
\item \parbox[t]{\linewidth}{I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.}
\item \parbox[t]{\linewidth}{I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.}
\end{enumerate}
\myitem{I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum. I would rather specify no more than a few sentences from Lorem Ipsum.}
\end{document}