# Longtabu, \tabucline placed on wrong page

See the following longtabu axample:

\documentclass{article}

\usepackage{longtable}
\usepackage{booktabs}
\usepackage{tabu}

\usepackage{lipsum}

\begin{document}

\tabulinesep=1.5mm    % <---- seems like this is causing the issue

\def\nbcolumns{2}
\begin{longtabu}{X[.5,l] X[1,l]}
\toprule\rowfont{\bfseries}
\midrule
%
\multicolumn{\nbcolumns}{l}{\scriptsize\itshape\ldots Fortsetzung}\\
\toprule\rowfont{\bfseries}
\midrule
%
\multicolumn{\nbcolumns}{r}{\scriptsize\itshape wird fortgesetzt \ldots}
\endfoot
\endlastfoot
%
\everyrow{\tabucline[on 3 pt off 3pt]-}
1 & \lipsum[2] \\
2 & \lipsum[2] \\
3 & \lipsum[2] \\
4 & \lipsum[2] \\
5 & \lipsum[2] \\
6 & \lipsum[2] \\
7 & \lipsum[2] \\
8 & \lipsum[2]
\everyrow{}\\
\bottomrule
\caption{Table name}
\end{longtabu}

\end{document}


... and the resulting document:

The page break from page 1 to page 2 is as expected.

But there is an issue with the page break from page 2 to page 3. The first dashed line on the top of page 3 should be placed on the bottom of page 2.

How can I fix it?

Or should I consider using an alternative to longtabu?

• You could consider replacing the dashed rules with a little bit of white space. – Thruston Jun 2 '14 at 17:47
• @Thruston I am sorry, but I am afraid I can't follow you. Do you have an example? I like the dashed rules, but one of the rules is placed on the wrong page. – sergej Jun 3 '14 at 7:24
• I was suggesting that you could easily avoid your problem by not using the rules at all. Personally I think tables look better with as few rules as possible. But if you like them that's fine too! – Thruston Jun 4 '14 at 11:41
• The documentation of tabu says "\tabucline does not care of page breaks presently: use \hline instead." – Andrew Swann Jun 5 '14 at 8:10
• @AndrewSwann Thank's for your answer, can I modify \hline to be dashed? – sergej Jun 5 '14 at 11:24

You can add a \nobreak so linebreaking before the tabu cline is discouraged and add a \filbreak so linebreaking (and padding with space) after the line is encouraged.

\documentclass{article}

\usepackage{longtable}
\usepackage{booktabs}
\usepackage{tabu}

\makeatletter
\renewcommand*\tabucline{\noalign{\nobreak\ifnum0=}\fi \tabu@cline}

\def\tabu@docline@evr {\xdef\tabu@doclineafter{\the\toks@\filbreak}%
\ifnum0={\fi}\aftergroup\tabu@doclineafter}

\makeatother

\usepackage{lipsum}

\begin{document}

\tabulinesep=1.5mm    % <---- seems like this is causing the issue

\def\nbcolumns{2}
\begin{longtabu}{X[.5,l] X[1,l]}
\toprule\rowfont{\bfseries}
\midrule
%
\multicolumn{\nbcolumns}{l}{\scriptsize\itshape\ldots Fortsetzung}\\
\toprule\rowfont{\bfseries}
\midrule
%
\multicolumn{\nbcolumns}{r}{\scriptsize\itshape wird fortgesetzt \ldots}
\endfoot
\endlastfoot
%
\everyrow{\tabucline[on 3 pt off 3pt]-}
1 & \lipsum[2] \\
2 & \lipsum[2] \\
3 & \lipsum[2] \\
4 & \lipsum[2] \\
5 & \lipsum[2] \\
6 & \lipsum[2] \\
7 & \lipsum[2] \\
8 & \lipsum[2]
\everyrow{}\\*
\bottomrule
\caption{Table name}
\end{longtabu}

\end{document}