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Long table showing below error when running tex4ht, but it is running in normal latex compilation. Please suggest how to rectify this error in TeX4HT?

I am running through make4ht.exe -l -u -a debug filename.tex and TeXlive 2022 edition

enter image description here

MWE:

    \documentclass{article}
    \usepackage{amsmath}
    \usepackage{longtable}
    \begin{document}
    
    Long table
    
    
    \begin{longtable}{|c|c|c|c|}
    \caption{A simple longtable example}\\
    \hline
    \textbf{First entry} & \textbf{Second entry} & \textbf{Third entry} & \textbf{Fourth entry} \\
    \hline
    \endfirsthead
    \multicolumn{4}{c}%
    {\tablename\ \thetable\ -- \textit{Continued from previous page}} \\
    \hline
    \textbf{First entry} & \textbf{Second entry} & \textbf{Third entry} & \textbf{Fourth entry} \\
    \hline
    \endhead
    \hline \multicolumn{4}{r}{\textit{Continued on next page}} \\
    \endfoot
    \hline
    \endlastfoot
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\ 1 & 2 & 3 & 4 \\
    \end{longtable}
    
    \end{document}
1
  • works fine in texlive 2023 but errors in texlive 2022 for me. So whatever is the bug it has been corrected in a current tex4ht. Sep 21, 2023 at 7:42

1 Answer 1

1

It seems that your distro may be old. I've fixed some issues with Longtable in the last two years, so your document compiles correctly with the up-to-date TeX Live. It would be best to update the distro.

In the meantime, you can try if the current version of longtable.4ht fixes the issue (it is possible that it doesn't as the errors can be caused also by other obsolete configuration files):

% longtable.4ht (2023-04-10-13:46), generated from tex4ht-4ht.tex
% Copyright 1997-2009 Eitan M. Gurari
% Copyright 2009-2023 TeX Users Group
%
% 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".
%
% The Current Maintainer of this work
% is the TeX4ht Project <http://tug.org/tex4ht>.
%
% If you modify this program, changing the
% version identification would be appreciated.
\immediate\write-1{version 2023-04-10-13:46}

   \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
\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%
  \ifvoid\LT@firsthead\copy\LT@head\else\box\LT@firsthead\fi\nobreak
  \output{\LT@output}
}
\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\LT@tabularcr{%
  \relax\iffalse{\fi\ifnum0=`}\fi
  \@ifstar
    {\LT@t@bularcr}%
    {\LT@t@bularcr}}

   \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
    \@ifnextchar[{\egroup\LT@c@ption\@firstofone}\LT@capti@n}
\HLet\LT@caption\:tempc
\NewConfigure{longtablecaption}{4}
\def\:tempc#1#2#3{%
    \a:longtablecaption #1{\cap:ref{#2}}\if\relax\detokenize{#1}\relax\else\b:longtablecaption\fi\c:longtablecaption#3\d:longtablecaption
    \endgraf%\vskip\baselineskip <- this caused error in https://tex.stackexchange.com/q/682383/2891
 }
\HLet\LT@makecaption\:tempc
\def\:tempc#1[#2]#3{%
  \LT@makecaption#1\fnum@table{#3}%
  \cur:lbl{}%
  \def\@tempa{#2}%
  \ifx\@tempa\@empty\else%
  {\let\\\space%
  \protect:wrtoc%
  \edef\:temp{#2}%
  \edef\:temp{\the\:tokwrite{\string\doTocEntry%
  \string\toclot%
  {\thetable}{\string\csname\space a:TocLink\string\endcsname%
    {\FileNumber}{\cur:th \:currentlabel}{}{\ifx\:temp\empty\else \ignorespaces #2\fi}}%
      {}\relax}}\:temp%
  }%
  \fi%
}

\HLet\LT@c@ption\:tempc

\Hinput{longtable}
\endinput

You will also need updated configuration for the HTML output, this config file should work:

\Preamble{xhtml}
\catcode`\:=11
  \Configure{halignTB<>}{longtable}{\HCode{id="TBL-\TableNo" class="longtable"\Hnewline
   \GROUPS\Hnewline
   }<>\HAlign}
\Css{table[rules] {border-left:solid black 0.4pt;
                   border-right:solid black 0.4pt; }}
\Css{table.longtable{border-collapse: collapse; border-spacing: 0;}}
\Configure{longtable}
   {\IgnorePar\EndP
     \HCode{<!--l. \the\inputlineno-->%
<div class="longtable">}%
    \halignTB{longtable}\putVBorder }
   {\HCode{</table></div>}}
   {\HCode{<tr \Hnewline}\halignTR\HCode{ id="TBL-\TableNo-\HRow-">}}
   {\r:HA}
   {\HCode{<td \ifnum \HMultispan>1 colspan="\HMultispan"\fi}%
    \halignTD \HCode{ id="TBL-\TableNo-\HRow-\HCol"
    \Hnewline class="td}\NoFonts
           \bgroup
              \ifx \ttfamily\:UnDef \else \ttfamily\fi
              \ColMargins
           \egroup
\EndNoFonts
%
    \HCode{">}\SaveEndP
%
    \par  \ShowPar
\PushStack\Table:Stck\TableNo}
   {\PopStack\Table:Stck\TableNo \IgnorePar \EndP
\d:HA}
\Css{div.longtable{text-align:center;}}
\Css{table.longtable{margin-left:auto; margin-right: auto;}}
\Configure{longtableparbox}{\IgnorePar\leavevmode\ShowPar\par}
\Configure{longtablecaption}{\ifvmode\IgnorePar\fi\EndP\HCode{<caption class="longtable">}\par\ShowPar\HCode{<span class="id">}}{:\ }{\HCode{</span><span class="content">}}{\HCode{</span>}\ifvmode\IgnorePar\fi\EndP\HCode{</caption>}}

\Css{caption.longtable .id{font-weight:bold;}}
\catcode`\:=12
\begin{document}
\EndPreamble

This is the result:

enter image description here

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