我正在处理的文档中有一张很长、多列的 tabularx 表格。我发现在某些情况下表格的格式会中断。
我的最小工作示例（使用注释行，取消注释时会中断）：
\documentclass[paper=letter, fontsize=10pt]{article}
\usepackage[english]{babel}
\usepackage{tabularx}
\usepackage{ltablex}
\listfiles
\begin{document}
\begin{tabularx}{\textwidth}{p{.5cm}p{.5cm}p{.5cm}p{.5cm}p{.75cm}p{8.75cm}}
\multicolumn{6}{p{11cm}}{\textbf{A Heading}} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
1 & \multicolumn{5}{X}{Foo} \\
& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
2 & \multicolumn{5}{X}{Bar} \\
& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
%1 & \multicolumn{5}{X}{Foo} \\
%& 1.1 & \multicolumn{4}{X}{Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap} \\
%2 & \multicolumn{5}{X}{Bar} \\
%& 2.1 & \multicolumn{4}{X}{More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end} \\
%& & 2.1.1 & \multicolumn{3}{X}{Random words words and more words in a fairly long line} \\
%& & 2.1.2 & \multicolumn{3}{X}{Other random words in a line} \\
\end{tabularx}
\end{document}
未损坏时的格式（仅限第一页）：
格式损坏时；即当文档行未注释时（仅第一页）：
构建时的日志文件：
This is pdfTeX, Version 3.14159265-2.6-1.40.16 (TeX Live 2015/Debian) (preloaded format=pdflatex 2016.7.5) 25 JUL 2016 14:55
entering extended mode
restricted \write18 enabled.
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**document.tex
(./document.tex
LaTeX2e <2016/02/01>
Babel <3.9q> and hyphenation patterns for 81 language(s) loaded.
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File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
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Package: array 2014/10/28 v2.4c Tabular extension package (FMi)
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(/usr/share/texlive/texmf-dist/tex/latex/ltablex/ltablex.sty
Package: ltablex 2014/08/13 v1.1 Modified tabularx
(/usr/share/texlive/texmf-dist/tex/latex/tools/longtable.sty
Package: longtable 2014/10/28 v4.11 Multi-page Table package (DPC)
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\LT@rows=\count91
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\LT@p@ftn=\toks16
))
LaTeX Warning: Unused global option(s):
[paper=letter,fontsize=10pt].
(./document.aux)
\openout1 = `document.aux'.
LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 9.
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LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 9.
LaTeX Font Info: ... okay on input line 9.
Overfull \hbox (6.32925pt too wide) in paragraph at lines 63--63
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size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
babel.sty 2016/02/24 3.9q The Babel package
english.ldf 2012/08/20 v3.3p English support from the babel system
tabularx.sty 2014/10/28 v2.10 `tabularx' package (DPC)
array.sty 2014/10/28 v2.4c Tabular extension package (FMi)
ltablex.sty 2014/08/13 v1.1 Modified tabularx
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***********
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几点说明：
- 我们对表格行的格式相当满意，因为在实际使用中，这是一个从 Excel 导出的很长的表格，我们需要对它进行的编辑越少越好
- 该问题与使用无关
ltablex；如果没有该包，表格将表现出相同的症状，只是它会从页面末尾延伸 - 我可以通过降级
tabularx到 2.07 版来解决这个问题。但是我不太愿意将其作为长期解决方案，因为我不想使用这个软件包 17 年前的版本。 - 虽然我只展示了输出的前几页，但无论是损坏的还是正常工作的，表格都跨越了多页
答案1
在给定的表中X总是被改变为p{固定宽度}宽度在开始时就已确定。由于没有X列，因此算法将只为该宽度赋予某个任意的虚假小值。
因此，即使tabularx设置正确，以下条目
\multicolumn{3}{X}{...}
\multicolumn{4}{X}{...}
将产生不必要的结果，X这里并不意味着“跨越 3 或 4 列并制作一个该宽度的 parbox”，而是意味着“跨越 3 或 4 列，然后将 X 宽度的 parbox 置于该跨度的中间。
除此之外，该ltablex软件包是 longtable 和 的一个相当古怪的合并，tabularx通常我只会坚持longtable，或者这里的一个列表。
\documentclass{article}
\usepackage[english]{babel}
\usepackage{longtable}
\renewcommand\theenumii{\theenumi.\arabic{enumii}}
\renewcommand\theenumiii{\theenumii.\arabic{enumiii}}
\renewcommand\labelenumii{\theenumii}
\setlength\leftmarginii {2.2em}
\setlength\leftmarginiii {3em}
\listfiles
\begin{document}
\section*{A Heading}
\begin{enumerate}
\item Foo
\begin{enumerate}
\item Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap
\end{enumerate}
\item Bar
\begin{enumerate}
\item More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end
\begin{enumerate}
\item Random words words and more words in a fairly long line
\item Other random words in a line
\end{enumerate}
\end{enumerate}
\item Foo
\begin{enumerate}
\item Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap
\end{enumerate}
\item Bar
\begin{enumerate}
\item More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end
\begin{enumerate}
\item Random words words and more words in a fairly long line
\item Other random words in a line
\end{enumerate}
\end{enumerate}
\item Foo
\begin{enumerate}
\item Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap
\end{enumerate}
\item Bar
\begin{enumerate}
\item More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end
\end{enumerate}
\item Foo
\begin{enumerate}
\item Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap
\end{enumerate}
\item Bar
\begin{enumerate}
\item More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end
\begin{enumerate}
\item Random words words and more words in a fairly long line
\item Other random words in a line
\end{enumerate}
\end{enumerate}
\item Foo
\begin{enumerate}
\item Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap
\end{enumerate}
\item Bar
\begin{enumerate}
\item More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end
\begin{enumerate}
\item Random words words and more words in a fairly long line
\item Other random words in a line
\end{enumerate}
\end{enumerate}
\item Foo
\begin{enumerate}
\item Lorem ipsum dolor sit amet consequetum in farfarbar foobraz do congraftsh thing stuff wrap need enough to make you wrap
\end{enumerate}
\item Bar
\begin{enumerate}
\item More lorem ipsum, or stuff with numbers, that doesn't quite wrap as far end
\end{enumerate}
\end{enumerate}
\end{document}