带标题的 longtable 在 tex4ht 中有额外的边线

Question

当我编译这个 MWE 时lualatex

\documentclass[11pt]{article}%
\usepackage{longtable}

\begin{document}    
This is my long table

\begin{longtable}{|c|c|}
\caption{my caption}\\\hline
A & B \\\hline
853.075 (sec) & 43.711 (sec)\\\hline
14.218 (minutes) & 0.729 (minutes)\\\hline
\end{longtable}

my long table is done    
\end{document}

输出符合预期

但使用make4ht foo.tex -c my.cfg "htm" asmy.cfg

\Preamble{xhtml}
\Css{div.caption{text-align:center;}}
\begin{document}
\EndPreamble

HTML 输出如下所示

请注意边缘线太长。

如果我删除标题，那么就可以了：

\documentclass[11pt]{article}%
\usepackage{longtable}    
\begin{document}    
This is my long table

\begin{longtable}{|c|c|}\hline 
A & B \\\hline
853.075 (sec) & 43.711 (sec)\\\hline
14.218 (minutes) & 0.729 (minutes)\\\hline
\end{longtable}

my long table is done    
\end{document}

现在使用编译，make4ht foo.tex "htm"输出正确，与 PDF 相同

如果我使用这个 .cfg 文件代替上面的

\Preamble{xhtml}
\Css{div.caption{text-align:center;}}
\Configure{float}{\csname par\endcsname\ShowPar}
{\ifvmode\IgnorePar\fi\EndP\HCode{<div class="float">}}
{\ifvmode\IgnorePar\fi\EndP\HCode{</div>}\ShowPar}
\begin{document}
\EndPreamble

在上面显示的第一个 MWE 上，输出如下所示，其中标题现在位于表格本身内

这还不算太糟，我可以接受。它看起来比第一个示例好，因为那里有额外的边缘。

有没有一种简单的解决方法，可以解决表格上方的标题不加多余线条的问题？就像在 PDF 输出中一样？

在 Linux 上使用 TL 2018

参考：如何在使用 tex4ht 时使标题位于表格下方中央

和

如何在长表顶部添加标题

Answer 1

问题是标题被渲染为 longtable 中的一行。当您请求列的边框时，您也会获得带有标题的行的边框。您可以尝试修改后的版本longtable.4ht，它可以防止创建表格行：

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% longtable.4ht                         2009-05-21-09:32 %
% Copyright (C) 1997--2009       Eitan M. Gurari         %
%                                                        %
% This work may be distributed and/or modified under the %
% conditions of the LaTeX Project Public License, either %
% version 1.3c of this license or (at your option) any   %
% later version. The latest version of this license is   %
% in                                                     %
%   http://www.latex-project.org/lppl.txt                %
% and version 1.3c or later is part of all distributions %
% of LaTeX version 2005/12/01 or later.                  %
%                                                        %
% This work has the LPPL maintenance status "maintained".%
%                                                        %
% This Current Maintainer of this work                   %
% is Eitan M. Gurari.                                    %
%                                                        %
% If you modify this program your changing its signature %
% with a directive of the following form will be         %
% appreciated.                                           %
%            \message{signature}                         %
%                                                        %
%                             [email protected]  %
%                 http://www.cse.ohio-state.edu/~gurari  %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\immediate\write-1{version 2009-05-21-09:32}

   \def\:tempc[#1]#2{%
  \gHAdvance\float:cnt  1
\gHAssign\capt:cnt0
\hbox{\def\flt:anchor{}\get:cptg}%
%
  \def\Clr{#2}\a:VBorder
\HAssign\ar:cnt0
\let\HAlign\empty
%
\def\aa:longtable{%
   \gdef\aa:longtable{\let\HRow\lt:sv
       \HAdvance\HRow by 1 \global\let\:MkHalign:\lt:MkHalign:}%
   \global\setbox\LT:box\vbox{\a:longtable}%
   \global\let\lt:MkHalign:\:MkHalign:}%
\def\bb:longtable{%
   \ifHCond \global\let\bb:longtable\empty
      \global\setbox\LT:ebox=\vbox{{\ht:everypar{}\leavevmode}\b:longtable}%
      \global\HCondfalse
   \fi}
%
  \refstepcounter{table}\stepcounter{LT@tables}%
  \if l#1%
    \LTleft\z@ \LTright\fill
  \else\if r#1%
    \LTleft\fill \LTright\z@
  \else\if c#1%
    \LTleft\fill \LTright\fill
  \fi\fi\fi
  \let\LT@mcol\multicolumn
  \let\LT@@tabarray\@tabarray
  \let\LT@@hl\hline
  \def\@tabarray{%
    \let\hline\LT@@hl
    \LT@@tabarray}%
  \let\\\LT@tabularcr\let\tabularnewline\\%
  \let\newpage\empty
\let\pagebreak\empty
\let\nopagebreak\empty
%
  \let\hline\LT@hline \let\kill\LT@kill\let\caption\LT@caption
  \@tempdima\ht\strutbox
  \let\@endpbox\LT@endpbox
  \ifx\extrarowheight\@undefined
    \let\@acol\@tabacol
    \let\@classz\@tabclassz \let\@classiv\@tabclassiv
    \def\@startpbox{\vtop\LT@startpbox}%
    \let\@@startpbox\@startpbox
    \let\@@endpbox\@endpbox
    \let\LT@LL@FM@cr\@tabularcr
  \else
    \advance\@tempdima\extrarowheight
    \col@sep\tabcolsep
    \let\@startpbox\LT@startpbox\let\LT@LL@FM@cr\@arraycr
  \fi
  \setbox\@arstrutbox\hbox{}%
  \let\@sharp##\let\protect\relax
   \begingroup
    \@mkpream{#2}%
    \xdef\LT@bchunk{%
       \global\advance\c@LT@chunks\@ne
       \global\LT@rows\z@\setbox\z@\vbox\bgroup
       \LT@setprevdepth
       \everycr{}\tabskip\LTleft\noexpand\MkHalign\noexpand\@sharp
   {\tabskip\z@ \@arstrut \@preamble \tabskip\LTright}%
}%
       \tmp:cnt=0
\global\let\:tempa\empty
\loop\ifnum \ar:cnt>\tmp:cnt
   \advance\tmp:cnt by 1
   \expandafter\ifx \csname @testpach \the\tmp:cnt\endcsname\relax
   \else
      \xdef\:tempa{%
          \:tempa
          \def \expandafter\noexpand
             \csname @testpach \the\tmp:cnt\endcsname{\csname @testpach
             \the\tmp:cnt\endcsname}}%
      \expandafter\let\csname @testpach \the\tmp:cnt\endcsname\relax
   \fi
\repeat
\aftergroup\:tempa
\xdef\:temp{%
   \def\noexpand\HAlign{\HAlign}%
   \def\noexpand\ar:cnt{\ar:cnt}}\aftergroup\:temp
%
  \endgroup
  \LT@cols\ar:cnt
%
  \LT@make@row
  \m@th\let\par\@empty
  \everycr{}\lineskip\z@\baselineskip\z@
  \ifx \EndPicture\:UnDef
     \SaveMkHalignConfig \ifx \recall:ar\:UnDef
   \edef\recall:ar{%
      \noexpand\ifx \noexpand\EndPicture\noexpand\:UnDef \noexpand\else
         \arrayrulewidth\the\arrayrulewidth
         \doublerulesep\the\doublerulesep
         \arraycolsep\the\arraycolsep
         \tabcolsep\the\tabcolsep
      \noexpand\fi }%
\fi
\arrayrulewidth\z@  \doublerulesep\z@
\arraycolsep\z@     \tabcolsep\z@
\Configure{MkHalign}
  \aa:longtable
  {\bb:longtable \ProperTrTrue}
  {\a:putHBorder\InitHBorder \ifProperTr{\c:longtable}}
  {\ifProperTr{\d:longtable}\a:putHBorder\InitHBorder}%
  {\ifProperTr{\e:longtable}\RecallMkHalignConfig\recall:ar}
  {\ifProperTr{\f:longtable}}
%
     \let\@sharp\relax
  \else \let\@sharp##\fi
  \LT@bchunk}
\HLet\LT@array\:tempc
\def\:tempc{%
  \crcr\LT@save@row\cr
  \ifx \EndPicture\:UnDef \EndMkHalign\else \egroup\fi
%
  \global\setbox\@ne\lastbox    \unskip
  \egroup}
\HLet\LT@echunk\:tempc
\let\:tempc\LT@startpbox
\append:defI\:tempc{\everypar{\HtmlPar}\a:longtableparbox}%
\HLet\LT@startpbox\:tempc
\NewConfigure{longtableparbox}{1}
\NewConfigure{longtable}{6}
\csname newbox\endcsname\LT:box
\csname newbox\endcsname\LT:ebox
\let\:tempc\LT@start
\pend:def\:tempc{%
  \ifvoid\LT@head\else
     \ifvoid\LT@firsthead
        \global\setbox\LT@firsthead=\hbox{\box\LT@head}%
     \else
        \global\setbox\tmp:bx=\hbox{\box\LT@head}%
  \fi\fi
  \box\LT:box}
\HLet\LT@start\:tempc
\let\:tempc\endlongtable
\append:def\:tempc{\box\LT:ebox}
\pend:def\:tempc{\global\HCondtrue}
\HLet\endlongtable\:tempc
\let\:tempc\LT@ntabularcr
\pend:def\:tempc{\global\let\lt:sv\HRow}
\HLet\LT@ntabularcr\:tempc
\let\:tempc\LT@end@hd@ft
\pend:defI\:tempc{\global\let\lt:sv\HRow}
\HLet\LT@end@hd@ft\:tempc
%\def\:tempc{\global\let\lt:sv\HRow}
%\HLet\LT@kill\:tempc
\def\LT@rebox#1\bgroup{%
  #1\bgroup
  \unskip
}
\let\:tempc\LT@kill
\pend:def\:tempc{\global\let\lt:sv\HRow}
\HLet\LT@kill\:tempc
\let\LT:argtabularcr\LT@argtabularcr
\def\:tempc{\global\let\lt:sv\HRow  \LT:argtabularcr}
\HLet\LT@argtabularcr\:tempc
\ifx \tmp:bx\:UnDef \csname newbox\endcsname \tmp:bx \fi
%\def\:tempc{\LT@end@hd@ft\tmp:bx}
%\HLet\endhead\:tempc
% \def\:tempc{\LT@end@hd@ft\tmp:bx}
% \HLet\endfoot\:tempc
\pend:def\LT@output{%
  \ifvoid\LT@foot\else
     \ifvoid\LT@lastfoot
        \global\setbox\LT@lastfoot=\hbox{\box\LT@foot}%
     \else
        \global\setbox\tmp:bx=\hbox{\box\LT@foot}%
  \fi\fi
}
\def\:tempc{\global\HCondtrue \LT@end@hd@ft\LT@lastfoot}
\HLet\endlastfoot\:tempc

   \def\:tempc{%
  \o:noalign:{\ifnum0=`}\fi
    \penalty\@M
    \futurelet\@let@token\LT@@hline}
\HLet\LT@hline\:tempc
\def\:tempc{%
  \ifx\@let@token\hline
    \global\let\@gtempa\@gobble
    \gdef\LT@sep{\penalty-\@medpenalty\vskip\doublerulesep}%
  \else
    \global\let\@gtempa\@empty
    \gdef\LT@sep{\penalty-\@lowpenalty\vskip-\arrayrulewidth}%
  \fi
  \ifnum0=`{\fi}%
  \a:hline
%
  \o:noalign:{\penalty\@M}%
  \@gtempa}
\HLet\LT@@hline\:tempc

   \def\:tempc{%
  \o:noalign:\bgroup \gHAdvance\TitleCount  1
    \bgroup\@ifnextchar[{\egroup\LT@c@ption\@firstofone}\LT@capti@n}
\HLet\LT@caption\:tempc
\NewConfigure{longtabcaption}{4}
\def\:tempc#1#2#3{%
\a:longtabcaption#1{\cap:ref{#2}}\b:longtabcaption#3\c:longtabcaption\egroup}
\Configure{longtabcaption}{\ifvmode\IgnorePar\fi\HCode{<caption id=""><strong>}}{\HCode{:</strong> }}{\HCode{</caption>}}

%  \LT@mcol\LT@cols c{\hbox{\parbox[t]\LTcapwidth{%
%       \cptA: #1{\cap:ref{#2}}\cptB:\cptC:#3\cptD:
%    \endgraf\vskip\baselineskip}}}}
\HLet\LT@makecaption\:tempc

\Hinput{longtable}
\endinput

它有它的问题，所以我认为我们不会tex4ht默认使用它，但它可能对你有用。

结果：

HTML 代码：

 <!--l. 8--><div class="longtable"> <table id="TBL-1" class="longtable" 
cellspacing="0" cellpadding="0"  
><colgroup id="TBL-1-1g"><col 
id="TBL-1-1" /></colgroup><colgroup id="TBL-1-2g"><col 
id="TBL-1-2" /></colgroup>
   <caption id=""><strong>Table 1:</strong> my caption</caption>