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脚注中的段落不正确

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脚注中的段落不正确 
\documentclass[12pt,oneside]{book}
\usepackage{geometry}
 \geometry{
 a4paper,
 total={160mm,234mm},
 left=20mm,
 right=20mm,
 top=20mm,
 bottom=20mm
 }

\usepackage[X2,T2A,OT2]{fontenc}
\usepackage[english,russian,russian.ancient]{babel}
\usepackage{marvosym}
\usepackage{fontspec}
\usepackage{url,indentfirst}
\RequirePackage{color,graphicx}
\usepackage{xcolor,colortbl}
\usepackage{enumitem}
\usepackage{epigraph}
\usepackage{caption}
\usepackage{multirow}

\usepackage{tikz}
\usepackage{chngcntr}
\usepackage{xifthen}


\setlength{\epigraphwidth}{0.5\textwidth}


\usepackage{booktabs,tabularx}
\usepackage{xltabular}
\usepackage{changepage}

\usepackage{titlesec}
\newpagestyle{mystyle}{\setfoot[\thepage][][]{}{}{\thepage}}
\pagestyle{mystyle}

\usepackage{titlesec}


\usepackage[absolute]{textpos}
\usepackage{titlefoot}
\usepackage{verse}
\usepackage{catchfilebetweentags}

\usepackage[stable]{footmisc}

\counterwithout{footnote}{chapter}
\counterwithout{section}{chapter}

\titleformat{\section}
  {\centering\bfseries}{\S~\thesection.}{1em}{}


\titleformat{\subsection}
{\centering}{\thesubsection.}{1em}{}

\newcommand{\quotes}[1]{,,#1''}

\begin{document}

\begin{xltabular}{\textwidth}{X | X }
cell1 & cell2\footnote{par1 par1par1 par1par1par1 par1 par1par1 par1 par1 par1 par1
par1 par1par1 par1par1par1 par1 par1-par1-par1 w par1 par1 par1 w par1par1par1par1par1 par1 par1 par1 par1 par1 www

par2 par2par2par2 par2par2 par2 par2 par2 par2
par2 par2 par2par2 par2 par2-par2-par2 w par2 par2 par2 w par2par2par2 par2 par2 par2 par2 par2 ww
} 
\end{xltabular}

\end{document}

需要在脚注中插入新段落。为什么上面的代码在编译时会出错：

xelatex code.tex
>>>>
Runaway argument?
{par1 par1par1 par1par1par1 par1 par1par1 par1 par1 par1 par1 par1 pa\ETC.
! Paragraph ended before \@footnotetext was complete.
<to be read again> 
                   \par 
l.118 \end{xltabular}

答案1

这个错误是 longtable.sty 中的一个 bug，位于文件末尾附近，其中有

\def\LT@p@ftntext#1{%

应该改为

\long\def\LT@p@ftntext#1{%

为了快速解决问题，请将 longtable.sty 从 latex 文件路径复制到文档目录。对其进行编辑并进行上述更改。

答案2

在脚注中获取新段落的最简单方法是使用\endgraf而不是空行或\par。这是由 TeX 直接提供的，建议在TeXbook该\par机制叠加了大量与简单的换行和缩进下一行无关的处理，因此产生了令人厌烦的错误。

我不会重复问题中的整个例子，只重复带有两段脚注的部分。

\begin{xltabular}{\textwidth}{X | X }
cell1 & cell2\footnote{par1 par1par1 par1par1par1 par1 par1par1 par1 par1 par1 par1
par1 par1par1 par1par1par1 par1 par1-par1-par1 w par1 par1 par1 w par1par1par1par1par1 par1 par1 par1 par1 par1 www\endgraf
%
par2 par2par2par2 par2par2 par2 par2 par2 par2
par2 par2 par2par2 par2 par2-par2-par2 w par2 par2 par2 w par2par2par2 par2 par2 par2 par2 par2 ww
} 
\end{xltabular}

答案3

长篇文内脚注，尤其是那些跨越两段或多段的脚注，对读者来说价值颇为可疑。（我认为以下建议来自经济学家 Greg Mankiw：“首先，将所有非必要内容放入脚注中。然后，删除脚注。”）

如果您想保留充足的脚注材料，您可以通过用\\（“双反斜杠”）替换全空行或将较长的两段脚注拆分为两个单独的脚注来“解决”您遇到的问题。第二种可能性如下所示。

不过，您可能想问问自己，您所做的是否在排版上合适。应该通过脚注传达什么信息？鉴于它们出现在表格中，脚注是否应该与表格在视觉上相关联，因此应将其放在表格底部而不是页面底部？如果确实如此，您可能需要考虑使用包及其threeparttable宏\tnote和tablenotes环境。以下示例也探讨了这种可能性。

在此处输入图片描述

\documentclass[12pt,oneside]{book}
% [I've pared down the preamble as much as possible]
\usepackage{geometry}
\geometry{a4paper,total={160mm,234mm},margin=20mm}
\usepackage[english,russian,russian.ancient]{babel}
\usepackage{fontspec}
\usepackage{booktabs,tabularx,xltabular}
\usepackage[stable,multiple,bottom]{footmisc}

\usepackage[flushleft]{threeparttable}\renewcommand\TPTtagStyle{\textit} % italic footnote markers

\setlength\textheight{8cm}
\begin{document}
\begin{xltabular}{\textwidth}{| X | X |}
\hline
cell1 & cell2%
\footnote{par1 par1par1 par1par1par1 par1 par1par1 par1 par1 par1 par1 par1 par1par1 par1par1par1 par1 par1-par1-par1 w par1 par1 par1 w par1par1par1par1par1 par1 par1 par1 par1 par1 www}%
\footnote{par2 par2par2par2 par2par2 par2 par2 par2 par2 par2 par2 par2par2 par2 par2-par2-par2 w par2 par2 par2 w par2par2par2 par2 par2 par2 par2 par2 www}
\\ \hline 
\end{xltabular}

\begin{table}[h!]
\begin{threeparttable}
\begin{tabularx}{\textwidth}{| X | X |}
\hline
cell1 & cell2\tnote{a} \\ 
\hline
\end{tabularx}

\smallskip\footnotesize
\begin{tablenotes}
\item[a] par1 par1par1 par1par1par1 par1 par1par1 par1 par1 par1 par1 par1 par1par1 par1par1par1 par1 par1-par1-par1 w par1 par1 par1 w par1par1par1par1par1 par1 par1 par1 par1 par1 www

\smallskip % 2nd para of footnote:
par2 par2par2par2 par2par2 par2 par2 par2 par2 par2 par2 par2par2 par2 par2-par2-par2 w par2 par2 par2 w par2par2par2 par2 par2 par2 par2 par2 www 
\end{tablenotes} 
\end{threeparttable}
\end{table}
\end{document}

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