# How to remove empty line after 'description' when 'list' is part of the tabular environment within the table's cell

A table is created with \usepackage{longtable}. All the cells are simple cells with the exception of the last cell in each row. This cell contains another tabular environment. It contains few lines of text and a list. No matter what I do, I can not get rid of the empty line after the list (see 'second row'). But, there is one exception. If I put a line of text after the list, I do not get empty line. Please, see 'first row'.

QUESTION: What is the magic command which will remove the empty line after the 'list' ?

\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

\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

\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}


• Ad hoc (and temporary) workaround: try adding \vspace*{-\baselineskip} after \end{description}.
– jon
Sep 9 '16 at 6:24
• yes... this is the magic command .... it did the trick TNX++
– Igor
Sep 9 '16 at 6:39

There is more than one way to do hanging indentation. Note that \baselineskip does not apply to the first or last line of a \parbox, so I like to start and end with a \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

\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

\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}


• As presented, the solution works. What is puzzling to me is the % after the within the 'list'}%. I thought that % is the delimiter where the comment starts ... so ... it should be irrelevant if it is there or not. But, If I remove it or just move it one character to the right like within the 'list'} %, the empty line after the last text line appears. Is there any explanation why the % has an impact on rendering ?
– Igor
Sep 10 '16 at 19:34
• Almost every line which ends with } will add a space. Putting % immediately after } prevents this. Sep 11 '16 at 14:59

just add to te last item line this command : \vspace{-\baselineskip}\mbox{} Edit : add it before the \end{description} like that :

                      \begin{description}[noitemsep,topsep=0pt]
\item[0 =]do
\item[1 =]   within the 'list''\vspace{-\baselineskip}\mbox{}
\end{description}

• I tried your suggestion. It does not work. I added to the last item line the \vspace{-\baselineskip}\mbox{}. So, the line looks like this \item[1 =] force some text and more of the same text some text and more of the same text within the 'list' \vspace{-\baselineskip}\mbox{} The suggestion from @jon (see above) works.
– Igor
Sep 9 '16 at 6:56
• both work, for my propose you need to put before the end description like : within the 'list''\vspace{-\baselineskip}\mbox{} \end{description} Sep 9 '16 at 7:05
• I\item[1 =] force some text and more of the same text some text and more of the same text within the 'list' \vspace{-\baselineskip}\mbox{} or \item[1 =] force some text and more of the same text some text and more of the tsame text within the 'list' \vspace{-\baselineskip}\mbox{} it does not work \item[1 =] force some text and more of the ame text some text and more of the same text within the 'list' \vspace{-\baselineskip}\mbox{} or \item[1 =] force some text and more of the ttsame text some text and more of the same text within the 'list' \vspace{-\baselineskip}\mbox{} it does work.
– Igor
Sep 9 '16 at 8:00
• the difference is in the length of the text. Look for word same or ame or tsame or ttsame . In other words, longer or shorter text works. Suggestion from @jon works in all cases.
– Igor
Sep 9 '16 at 8:03