使用 \usepackage{longtable} 创建表格。除每行最后一个单元格外，所有单元格都是简单单元格。此单元格包含另一个表格环境。它包含几行文本和一个列表。无论我做什么，都无法摆脱列表后的空行（参见“第二行”）。但是，有一个例外。如果我在列表后放一行文本，就不会得到空行。请参阅“第一行”。
问题：什么是神奇命令可以删除“列表”后的空行？
\documentclass[letterpaper]{article}
\usepackage{longtable}
\usepackage{enumitem}
\begin{document}
\begin{longtable}{@{}lcccl@{}}
\caption{INPUT ports definition.} \label{tab:signal_definition_input} \\
\hline
\textbf{COL 1} & \textbf{COL 2} & \textbf{COL 3}
& \textbf{COL 4}& \textbf{DESCRIPTION} \\
\hline
\endfirsthead
\multicolumn{5}{c}%
{{\bfseries \tablename\ \thetable{} -- continued from previous page}} \\
\hline
\textbf{COL 1} & \textbf{COL 2} & \textbf{col 3}
& \textbf{COL 4}& \textbf{DESCRIPTION} \\
\hline
\endhead
\hline
\multicolumn{5}{@{}r@{}}{{Continued\ldots}} \\
\hline
\endfoot
\hline
\endlastfoot
first row & 1 & IN & 0 & \begin{tabular}{p{8cm}}
forces exit from the passthrough mode \\
SOURCE main digital
\begin{description}[noitemsep,topsep=0pt]
\item[0 =]do nothing This is pdfTeX,
Version 3.14159265-2.6-1.40.17
\item[1 =] force some text and more of the
same text some text and more
of the same text
within the 'list'
\end{description}
EXTRA line of text after 'list' is needed
to prevent empty line \\
\end{tabular} \\
\hline %-----------------------------------------------
second row & 1 & IN & 0 & \begin{tabular}{p{8cm}}
forces exit from the passthrough mode \\
SOURCE main digital
\begin{description}[noitemsep,topsep=2pt]
\item[0 =]do nothing This is pdfTeX,
Version 3.14159265-2.6-1.40.17
\item[1 =] force some text and more of the
same text some text and more
of the same text
within the 'list'
\end{description}
\end{tabular} \\
\hline %------------------------------------------------
\end{longtable}
\end{document}
答案1
有多种方法可以实现悬挂缩进。请注意，\baselineskip不适用于 的第一行或最后一行\parbox，因此我喜欢以 开始和结束\strut。
\documentclass[letterpaper]{article}
\usepackage{longtable}
\usepackage{enumitem}
\newcommand{\desc}[2]% %1 = label, #2 = description
{\bgroup
\sbox0{#1\hspace{\itemsep}}%
\usebox0\parbox[t]{\dimexpr \linewidth-\wd0}{\strut #2\strut}%
\egroup}
\begin{document}
\begin{longtable}{@{}lcccl@{}}
\caption{INPUT ports definition.} \label{tab:signal_definition_input} \\
\hline
\textbf{COL 1} & \textbf{COL 2} & \textbf{COL 3}
& \textbf{COL 4}& \textbf{DESCRIPTION} \\
\hline
\endfirsthead
\multicolumn{5}{c}%
{{\bfseries \tablename\ \thetable{} -- continued from previous page}} \\
\hline
\textbf{COL 1} & \textbf{COL 2} & \textbf{col 3}
& \textbf{COL 4}& \textbf{DESCRIPTION} \\
\hline
\endhead
\hline
\multicolumn{5}{@{}r@{}}{{Continued\ldots}} \\
\hline
\endfoot
\hline
\endlastfoot
first row & 1 & IN & 0 & \parbox{8cm}{\strut
forces exit from the passthrough mode \\
SOURCE main digital\\
\desc{0 =}{do nothing This is pdfTeX,
Version 3.14159265-2.6-1.40.17}\\
\desc{1 =}{force some text and more of the
same text some text and more
of the same text
within the 'list'}%
\strut}\\
\hline %-----------------------------------------------
second row & 1 & IN & 0 & \parbox{8cm}{\strut
forces exit from the passthrough mode \\
SOURCE main digital\\
\desc{0 =}{do nothing This is pdfTeX,
Version 3.14159265-2.6-1.40.17}\\
\desc{1 =}{force some text and more of the
same text some text and more
of the same text
within the 'list'}%
\strut}\\
\hline %------------------------------------------------
\end{longtable}
\end{document}
答案2
只需在最后一项行中添加此命令： \vspace{-\baselineskip}\mbox{}
编辑：将其添加到 \end{description} 之前，如下所示：
\begin{description}[noitemsep,topsep=0pt]
\item[0 =]do
\item[1 =] within the 'list''\vspace{-\baselineskip}\mbox{}
\end{description}