Btw, after send this email, I noticed that your .cfg file had

 %  \Css{\#TBL-\TableNo\space colgroup{border-left: 1px solid
black;border-right:1px solid black;}}

This looks like wrraping error in email and it should be all on one line

 %  \Css{\#TBL-\TableNo\space colgroup{border-left: 1px solid 
black;border-right:1px solid black;}}

When I fixed this, and made it all on one line, the error went
away. so will try now with this version.

regards
--Nasser


On 2/4/2022 1:43 PM, Nasser M. Abbasi wrote:
On 2/3/2022 8:25 AM, Michal Hoftich wrote:

I also found a way how to support individual vertical rules. Right
now, a table that has one vertical rule, will have set all vertical
rules, regardless of the original LaTeX code. The new code should fix
that. Try the following .cfg file:

%%%%%%%%%%%%%%%%%%%%%
\Preamble{xhtml}

\catcode`\:=11
\Configure{VBorder}
     {\let\VBorder\empty \let\AllColMargins\empty
      \global\let\GROUPS\empty \HAssign\NewGroup = 0
      \gHAdvance\Next:TableNo by 1 \global\let\TableNo=\Next:TableNo }
     {\xdef\VBorder{\VBorder\ifnum \NewGroup> 0 </colgroup>\fi}
      \HAssign\NewGroup = 0 % \gdef\GROUPS{rules="groups"}
    %  \Css{\#TBL-\TableNo\space colgroup{border-left: 1px solid
black;border-right:1px solid black;}}
    %\Css{\#TBL-\TableNo{border-collapse:collapse;}}
    \ifnum\ar:cnt > 0
      \Css{\#TBL-\TableNo-\ar:cnt {border-right:1px solid black;}}
    \else
      \Css{\#TBL-\TableNo-1{border-left: 1px solid black;}}
    \fi
}
     {\Advance:\NewGroup by 1
      \ifnum \NewGroup=1 \xdef\VBorder{\VBorder<colgroup
          id="TBL-\TableNo-\ar:cnt g">}\fi
      \xdef\VBorder{\VBorder<col\Hnewline id="TBL-\TableNo
         -\ar:cnt"\xml:empty>}\xdef\AllColMargins{\AllColMargins1}}
     {\xdef\AllColMargins{\AllColMargins 0}}
\catcode`\:=12
\begin{document}
\EndPreamble

%%%%%%%%%%%%%%%%%%%

I will update TeX4ht sources, so it should work soon in TL.

Best regards,
Michal


Hello Michal;

I got a chance finally to try the above. But I am getting an error
on even the most simple example.

make4ht -c ./nma_mathjax.cfg vborder.tex "mathjax,htm"

================
make4ht -c ./nma_mathjax.cfg vborder.tex "mathjax,htm"
[STATUS]  make4ht: Conversion started
[STATUS]  make4ht: Input file: vborder.tex
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename     Line    Message
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg    23       Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg    24       Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg    24       Missing number, treated as 
zero.
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename     Line    Message
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg    23       Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg    24       Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg    24       Missing number, treated as 
zero.
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename     Line    Message
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg    16       Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg    18       LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg    23       Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg    24       Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg    24       Missing number, treated as 
zero.
[STATUS]  make4ht: Conversion finished

===================

Where vboard.tex is

==================
\documentclass[12pt]{article}
\begin{document}

test

\end{document}
=====================

And nma_mathjax.cfg  is

cat ./nma_mathjax.cfg


\Preamble{xhtml,p-width}

%TMP FIX due to table header missing 2/4/2022. Rememember to remove when
%texht sources are updated. by Micahl.
%%%%%%%%%%%%%%%%%%%%%
\catcode`\:=11
\Configure{VBorder}
     {\let\VBorder\empty \let\AllColMargins\empty
      \global\let\GROUPS\empty \HAssign\NewGroup = 0
      \gHAdvance\Next:TableNo by 1 \global\let\TableNo=\Next:TableNo }
     {\xdef\VBorder{\VBorder\ifnum \NewGroup> 0 </colgroup>\fi}
      \HAssign\NewGroup = 0 % \gdef\GROUPS{rules="groups"}
    %  \Css{\#TBL-\TableNo\space colgroup{border-left: 1px solid
black;border-right:1px solid black;}}
    %\Css{\#TBL-\TableNo{border-collapse:collapse;}}
    \ifnum\ar:cnt > 0
      \Css{\#TBL-\TableNo-\ar:cnt {border-right:1px solid black;}}
    \else
      \Css{\#TBL-\TableNo-1{border-left: 1px solid black;}}
    \fi
}
     {\Advance:\NewGroup by 1
      \ifnum \NewGroup=1 \xdef\VBorder{\VBorder<colgroup
          id="TBL-\TableNo-\ar:cnt g">}\fi
      \xdef\VBorder{\VBorder<col\Hnewline id="TBL-\TableNo
         -\ar:cnt"\xml:empty>}\xdef\AllColMargins{\AllColMargins1}}
     {\xdef\AllColMargins{\AllColMargins 0}}
\catcode`\:=12
%%%%%%%%%%%%%%%%%%%%%


\begin{document}

\EndPreamble
-------------------------------------


Is there something wrong I am doing?

which make4ht
/usr/local/texlive/2021/bin/x86_64-linux/make4ht

Thanks
--Nasser


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