我正在使用ltablexs \multicolumn。我的问题是，我必须在单个项目中引入大量文本\multicolumn，然后当它自动将表格拆分到两个不同的页面上时，它会在第一页的末尾留下大量空白。我想找到一个线索，\multicolumn当到达底部边距时自动拆分项目，而不是逐行拆分。以下是一个例子：
\begin{tabularx}{\linewidth}{| l | X | X | X | X | X | X | X |}
blabla & more blabla & \multicolumn{3}{c|}{merging cells} & \multicolumn{3}{c|}{more merging} \\
\multicolumn{8}{|p{\textwidth-2\tabcolsep-2\fboxrule}|}{a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, } \\
\hline
\multicolumn{8}{|p{\textwidth-2\tabcolsep-2\fboxrule}|}{a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, } \\
\hline
\multicolumn{8}{|p{\textwidth-2\tabcolsep-2\fboxrule}|}{a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, } \\
\hline
\multicolumn{8}{|p{\textwidth-2\tabcolsep-2\fboxrule}|}{a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, } \\
\hline
...
\multicolumn{8}{|p{\textwidth-2\tabcolsep-2\fboxrule}|}{a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, a very long text, } \\
\hline
\end{tabularx}
答案1
这里完全没有必要longtable/ltablex（也不需要使用 tabularx X 列）。如果使用tabularxtex，则需要花费大量精力重新设置表格并确定最佳列宽，但您事先知道跨越单元格是全宽，而单个单元格是全宽的八分之一（或至少是行宽的七分之一减去第一列中的最大条目）。因此，您可以告诉 TeX 这一点，并省去计算的麻烦。固定单元格宽度后，它们不再需要位于同一个表格中，因为它们无论如何都会对齐，因此您可以用普通文本替换跨越条目。如果您确实需要垂直规则，您可以使用mdframed可破坏的框架。
笔记
\textwidth-2\tabcolsep-2\fboxrule
不是正确的计算，因为规则宽度\arrayrulewidth不正确\fboxrule（当然它们可能具有相同的值）。
因此类似于：
\documentclass{article}
\addtolength\textheight{-30\baselineskip}
\addtolength\paperheight{-30\baselineskip}
\pdfpageheight\paperheight
\newenvironment{trow}
{\par
\begin{tabular}{|*8{p{\dimexpr(((\textwidth-\arrayrulewidth)/8)-2\tabcolsep-\arrayrulewidth)\relax}|}}
\hline}
{\\\hline\end{tabular}%
\par}
\begin{document}
\setlength\parindent{0pt}
\def\x{a very long text, a very long text, a very long text, a very long
text, a very long text, a very long text, a very long text, a very
long text, a very long text, a very long text, a very long text, a
very long text, a very long text, a very long text, a very long text,
a very long text, a very long text, a very long text, a very long
text, a very long text, a very long text, }
\x
\begin{trow}
red&yellow&blue&green&red&yellow&blue&green
\end{trow}
\begin{trow}
1&2&3&4&5&6&7&8
\end{trow}
\x
\begin{trow}
red&yellow&blue&green&red&yellow&blue&green
\end{trow}
\begin{trow}
1&2&3&4&5&6&7&8
\end{trow}
\x
\begin{trow}
red&yellow&blue&green&red&yellow&blue&green
\end{trow}
\begin{trow}
1&2&3&4&5&6&7&8
\end{trow}
\end{document}