我正在尝试重新实现 David Carlisle 给出的解决方案这里用于拆分长表的特定行（使用\hline命令拆分而不是\cline一行）。此解决方案与使用\\*命令（另一个示例这里longtable)，并且与和环境完美配合longtabu。
booktabs现在，我想与使用不同机制来绘制线条的包一起工作，特别是在\hline\hline某些情况下。
按照 David 给出的步骤，我重写了\@cmidrulea和\@cmidruleb命令，根据 booktabs 文档，它们实际上绘制了规则。这是一个“最小”示例：
\documentclass[oneside,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lipsum}
\usepackage[left=1in,right=1in]{geometry}
\usepackage{tabu}
\usepackage{booktabs}
\usepackage{longtable}
\usepackage{multirow} % Para las tablas (varias filas)
\usepackage[table]{xcolor} % Colores. Tambien en tablas
\newcommand{\OG}{\cellcolor{orange}}
%%%% Tomado de https://tex.stackexchange.com/questions/52100/longtable-multirow-problem-with-cline-and-nopagebreak
\makeatletter
\def\@cmidrulea{%
\multispan\@cmidla&\multispan\@cmidlb
\unskip\hskip\cmrkern@l%
{\CT@arc@\leaders\hrule \@height\@thisrulewidth\hfill}%
\hskip\cmrkern@r\cr
\noalign{\nobreak\vskip-\@thisrulewidth} %% Inserted \nobreak here
}%
\def\@cmidruleb{% This remains unchanged
\multispan\@cmidlb
\unskip\hskip \cmrkern@l%
{\CT@arc@\leaders\hrule \@height\@thisrulewidth\hfill}%
\hskip\cmrkern@r\cr
% \noalign{\nobreak\vskip-\@thisrulewidth} %% With this, "almost" works...
}%
\makeatother
\begin{document}
\lipsum[1-3]
\begin{longtabu} to \textwidth {|X[3,lm]|X[1,cm]|X[1,cm]|X[1,cm]|X[1,cm]|X[1,cm]|X[1,cm]|}
\toprule
\rowfont\bfseries
Lorem ipsum dolor sit amet, consectetuer adipiscing
elit.
& Curabitur
& Nam
& Pellentesque
& Donec
& Curabitur
& Cras\\*
\midrule
\endhead
\multicolumn{7}{r}{\small \it Continued on next page} \\* \endfoot
\endlastfoot
\multicolumn{7}{c}{\OG\textbf{First group heading}}\\*
\midrule
Lorem ipsum dolor sit amet & Terra & Integer & & Mauris & Mauris & MC \\
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\midrule
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\midrule
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\midrule
\multicolumn{7}{c}{\OG\textbf{Second group heading}}\\*
\midrule
Lorem ipsum dolor sit amet & Terra & Integer & & Mauris & Mauris & MC \\
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\midrule
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\midrule
\multicolumn{7}{c}{\OG\textbf{Third group heading}}\\*
\midrule
%\cmidrule{1-7} %% Ouch!
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\bottomrule
\caption{Fiat iustitia, ne pereat mundus.}
\label{tab:fiat-iustitia}
\tabuphantomline
\end{longtabu}
\end{document}
正如您所看到的，如果您处理该文档，则会在第三个标题组中出现分页符，即使使用明确的无分页\\* 命令也是如此。
作为绝望的解决方案，我尝试用\midrule一个不太优雅的命令替换该命令\cmidrule{1-7}，但这只有在我取消注释（重新）定义\nobreak中的行时才有效\@cmidruleb。如果我这样做，页面会正确分页，但最后一行会在下一页绘制。我对最后一种情况也很感兴趣，因为我可能需要在表格右侧的多行单元格中使用\cmidrule{1-n}命令。
谁能帮我？
提前致谢。
答案1
分页通常发生在\vskip添加（而不是规则）的地方。以下内容将\BT@nobreaknooktables 添加的每个 vskip 放在前面（默认定义为） \relax，然后提供两个命令在和之间切换其定义\relax，\nobreak以便您可以防止在 booktabs 规则中为表格的各个部分（特别是在彩色组标题周围以及由\multirow
\documentclass[oneside,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lipsum}
\usepackage[left=1in,right=1in]{geometry}
\usepackage{tabu}
\usepackage{booktabs}
\usepackage{longtable}
\usepackage{multirow} % Para las tablas (varias filas)
\usepackage[table]{xcolor} % Colores. Tambien en tablas
\newcommand{\OG}{\cellcolor{orange}}
%%%% Tomado de http://tex.stackexchange.com/questions/52100/longtable-multirow-problem-with-cline-and-nopagebreak
\makeatletter
\let\BT@nobreak\relax
\def\@@@cmidrule[#1-#2]#3#4{\global\@cmidla#1\relax
\global\advance\@cmidla\m@ne
\ifnum\@cmidla>0\global\let\@gtempa\@cmidrulea\else
\global\let\@gtempa\@cmidruleb\fi
\global\@cmidlb#2\relax
\global\advance\@cmidlb-\@cmidla
\global\@thisrulewidth=#3
\@setrulekerning{#4}
\ifnum\@lastruleclass=\z@\BT@nobreak\vskip \aboverulesep\fi
\ifnum0=`{\fi}\@gtempa
\noalign{\ifnum0=`}\fi\futurenonspacelet\@tempa\@xcmidrule}
\def\@BTendrule{\ifx\@tempa\toprule\global\@lastruleclass=\@thisruleclass
\else\ifx\@tempa\midrule\global\@lastruleclass=\@thisruleclass
\else\ifx\@tempa\bottomrule\global\@lastruleclass=\@thisruleclass
\else\ifx\@tempa\cmidrule\global\@lastruleclass=\@thisruleclass
\else\ifx\@tempa\specialrule\global\@lastruleclass=\@thisruleclass
\else\ifx\@tempa\addlinespace\global\@lastruleclass=\@thisruleclass
\else\global\@lastruleclass=\z@\fi\fi\fi\fi\fi\fi
\ifnum\@lastruleclass=\@ne\relax\else\BT@nobreak\vskip\@belowrulesep\fi
\ifnum0=`{\fi}}
\def\@xcmidrule{%
\ifx\@tempa\cmidrule
\BT@nobreak\vskip-\@thisrulewidth
\global\@lastruleclass=\@ne
\else \ifx\@tempa\morecmidrules
\BT@nobreak\vskip \cmidrulesep
\global\@lastruleclass=\@ne\else
\BT@nobreak\vskip \belowrulesep
\global\@lastruleclass=\z@
\fi\fi
\ifnum0=`{\fi}}
\def\@BTrule[#1]{%
\BT@nobreak
\global\@thisrulewidth=#1\relax
\ifnum\@thisruleclass=\tw@\vskip\@aboverulesep\else
\ifnum\@lastruleclass=\z@\vskip\@aboverulesep\else
\ifnum\@lastruleclass=\@ne\vskip\doublerulesep\fi\fi\fi
\ifx\longtable\undefined
\let\@BTswitch\@BTnormal
\else\ifx\hline\LT@hline
\let\@BTswitch\@BLTrule
\else
\let\@BTswitch\@BTnormal
\fi\fi
\@BTswitch}
\def\@cmidrulea{%
\multispan\@cmidla&\multispan\@cmidlb
\unskip\hskip\cmrkern@l%
{\CT@arc@\leaders\hrule \@height\@thisrulewidth\hfill}%
\hskip\cmrkern@r\cr
\noalign{\BT@nobreak\vskip-\@thisrulewidth} %% Inserted \BT@nobreak here
}%
\def\nobtrulebreaks{\noalign{\global\let\BT@nobreak\nobreak}}
\def\allowbtrulebreaks{\noalign{\global\let\BT@nobreak\relax}}
\makeatother
\begin{document}
\lipsum[1-3]
\begin{longtabu} to \textwidth {|X[3,lm]|X[1,cm]|X[1,cm]|X[1,cm]|X[1,cm]|X[1,cm]|X[1,cm]|}
\toprule
\rowfont\bfseries
Lorem ipsum dolor sit amet, consectetuer adipiscing
elit.
& Curabitur
& Nam
& Pellentesque
& Donec
& Curabitur
& Cras\\*
\midrule
\endhead
\multicolumn{7}{r}{\small \it Continued on next page} \\* \endfoot
\endlastfoot
\nobtrulebreaks
\multicolumn{7}{c}{\OG\textbf{First group heading}}\\*
\midrule
Lorem ipsum dolor sit amet & Terra & Integer & & Mauris & Mauris & MC \\
\allowbtrulebreaks
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
\nobtrulebreaks
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\allowbtrulebreaks
\midrule
\nobtrulebreaks
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\allowbtrulebreaks
\midrule
\nobtrulebreaks
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
\allowbtrulebreaks
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\nobtrulebreaks
\midrule
\multicolumn{7}{c}{\OG\textbf{Second group heading}}\\*
\midrule
Lorem ipsum dolor sit amet & Terra & Integer & & Mauris & Mauris & MC \\
\allowbtrulebreaks
\midrule
Pellentesque habitant morbi tristique senectus& Terra & Integer &
& Orci & Mauris & DB \\
\midrule
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\midrule
\nobtrulebreaks
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
\allowbtrulebreaks
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\nobtrulebreaks
\midrule
\multicolumn{7}{c}{\OG\textbf{Third group heading}}\\*
\midrule
%\cmidrule{1-7} %% Ouch!
\multirow{2}{\linewidth}{Pellentesque habitant morbi tristique
senectus} &
Phasellus (vehicula augue eu neque) & Integer & \textbf{
\parbox{\linewidth}{
Curabitur\\
Phasellus
}
} & Mauris & \textbf{Magna} & DB \\*
\cmidrule{2-7}
\allowbtrulebreaks
& Donec (vehicula augue eu neque) & Puella &
\textbf{Curabitur Phasellus Magna} & Mauris & \textbf{Magna} & DB \\
\bottomrule
\caption{Fiat iustitia, ne pereat mundus.}
\label{tab:fiat-iustitia}
\tabuphantomline
\end{longtabu}
\end{document}