Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-06 Thread Michal Hoftich
Hi Nasser,

>
> Thanks, your fix did fix the vertical lines on tabular that went missing
> after 118 subsections.
>
> Now they show in all sections.
>
> But I am afraid a new problem shows up. Now verical lines on
> longtable no long show up. I am not sure why.

thanks for the report. Try the following config 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 \fi}
\HAssign\NewGroup = 0 % \gdef\GROUPS{rules="groups"}
  \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}\fi
\xdef\VBorder{\VBorder}\xdef\AllColMargins{\AllColMargins1}}
   {\xdef\AllColMargins{\AllColMargins 0}}
\catcode`\:=12
\Css{table.longtable{border-collapse: collapse; border-spacing: 0;}}
\begin{document}
\EndPreamble
%

The necessary fix for longtable is this:

\Css{table.longtable{border-collapse: collapse; border-spacing: 0;}}

Best regards,
Michal


Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-05 Thread Nasser M. Abbasi

Hello Micahl;

An update.

Thanks, your fix did fix the vertical lines on tabular that went missing
after 118 subsections.

Now they show in all sections.

But I am afraid a new problem shows up. Now verical lines on
longtable no long show up. I am not sure why.

Here is a MWE (I attached all these in zip file in case of line wraping)

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

\begin{tabular}[c]{|l|l|l|l|l|l|l|l|l|}\hline
1&1. (1)&3.9 (50)&16.6 (114)&3.8 (169)&4. (45)&7.5 (169)&4.2 (164)&42.4 (169)\\
2&7.3 (21)&5. (20)&3.6 (17)&1.9 (4)&14.3 (13)&16.8 (5)&4.6 (2)&3.3 (26)\\
4&6.4 (5)&14.3 (13)&40.7 (46)&16.6 (43)&5.5 (43)&4.8 (40)&5.3 (1)&6.9 
(4)\\\hline
\end{tabular}

\begin{longtable}[c]{|l|l|l|l|l|l|l|l|l|}\hline
1&1. (1)&3.9 (50)&16.6 (114)&3.8 (169)&4. (45)&7.5 (169)&4.2 (164)&42.4 (169)\\
2&7.3 (21)&5. (20)&3.6 (17)&1.9 (4)&14.3 (13)&16.8 (5)&4.6 (2)&3.3 (26)\\
4&6.4 (5)&14.3 (13)&40.7 (46)&16.6 (43)&5.5 (43)&4.8 (40)&5.3 (1)&6.9 
(4)\\\hline
\end{longtable}
\end{document}
===

When compiling the above using

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

Then vertical lines in longtable are missing in HTML. But when compiling using

make4ht vborder.tex "mathjax,htm"

Then vertical lines in longtable do show up.  In both cases
the vertical line in tabular show up OK.

the .cfg above is what you send.

It seems the fix had some side interaction with longtable?

Please see attached zip file with the source code and .cfg and HTML generated

Using TL 2021 on Linux.

Thanks for your help
--Nasser<>


Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-04 Thread Michal Hoftich
Hi Nasser,

>
> 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.

You are right, the config file got wrong wrapping, and braces from the
CSS instruction caused compilation error. You can safely remove both
\Css commands that are commented out.

Best regards,
Michal


Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-04 Thread Nasser M. Abbasi

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 \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}\fi
  \xdef\VBorder{\VBorder}\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 LineMessage
[ERROR]   htlatex: ./nma_mathjax.cfg16   Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg23   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Missing number, treated as 
zero.
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename LineMessage
[ERROR]   htlatex: ./nma_mathjax.cfg16   Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg23   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Missing number, treated as 
zero.
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename LineMessage
[ERROR]   htlatex: ./nma_mathjax.cfg16   Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg23   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Missing number, treated as 
zero.
[STATUS]  make4ht: Conversion

Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-04 Thread Nasser M. Abbasi

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 \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}\fi
 \xdef\VBorder{\VBorder}\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 LineMessage
[ERROR]   htlatex: ./nma_mathjax.cfg16   Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg23   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Missing number, treated as 
zero.
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename LineMessage
[ERROR]   htlatex: ./nma_mathjax.cfg16   Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg23   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Missing number, treated as 
zero.
[ERROR]   htlatex: Compilation errors in the htlatex run
[ERROR]   htlatex: Filename LineMessage
[ERROR]   htlatex: ./nma_mathjax.cfg16   Argument of \c:VBorder: has an 
extra }.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Paragraph ended before 
\c:VBorder: was complete.
[ERROR]   htlatex: ./nma_mathjax.cfg16   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing = inserted for \ifnum.
[ERROR]   htlatex: ./nma_mathjax.cfg18   Missing number, treated as 
zero.
[ERROR]   htlatex: ./nma_mathjax.cfg18   LaTeX Error: Missing 
\begin{document} in `./nma_mathjax.cfg'.
[ERROR]   htlatex: ./nma_mathjax.cfg23   Too many }'s.
[ERROR]   htlatex: ./nma_mathjax.cfg24   Undefined control sequence.
[ERROR]   htlatex: ./nma_mathjax.cfg24   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\

Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-03 Thread Michal Hoftich
> I think you are right here. I googled this and it says
>
> "Firefox is not based on Chromium (the open source
> browser project at the core of Google Chrome). In
> fact, we're one of the last major browsers that isn't.
> Firefox runs on our Quantum browser engine built specifically for Firefox"
>
> So this explains the difference between what Firefox shows (correct)
> and Brave, Edge and Chrome (missing vertical lines after some subsections).
>

Yes, I think so, as they all use the same browser engine.

>
> Yes, I noticed this duplication also when I was looking at the .css,
> Actually some had more duplication than others, and I did not know why.
>
> For example this is duplicated 4 times

> But this one earlier in the .css file, is duplicated 6 times !
>

They are duplicated for every vertical line. What is wrong is that
they are same. They all use a different ID, to address each particular
vertical line in tables.

> This is why the .css is so large. May be this also affects performance
> og loading the pages as I noticed they are slow to come up at first.
>

Yes, it most likely affects the performance. This is the downside of
the fact that you have such large files. Maybe I could make a make4ht
filter that tries to make the CSS file smaller, but it won't be easy.

>
> Thank you for the fix. I will test the above later tonight, The HTML build
> takes about 10 hrs to finish (pdf about 1 hr) so I will see the result
> sometime tomorrow.

I hope it will.

Best regards,
Michal


Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-03 Thread Nasser M. Abbasi

On 2/3/2022 8:25 AM, Michal Hoftich wrote:

Hi Nasser,



All subsection use the same latex code to make a small
table. The table shows OK with vertical lines showing
up to subsection 118, then after that the same table
starts showing with the vertical lines missing !



I think that it is an issue with browsers that are based on Chromium
or Webkit. They seem to ignore table border instructions at some
point. It is true that your CSS file is huge, it has hundreds of
thousands of lines. This huge number is caused by tables.



I think you are right here. I googled this and it says

"Firefox is not based on Chromium (the open source
browser project at the core of Google Chrome). In
fact, we're one of the last major browsers that isn't.
Firefox runs on our Quantum browser engine built specifically for Firefox"

So this explains the difference between what Firefox shows (correct)
and Brave, Edge and Chrome (missing vertical lines after some subsections).


I dug into the code that handles vertical rules and found that it
generates some unnecessary instructions, in particular lines like
#TBL-5586{border-collapse:collapse;}. These can be safely removed, as
all tabulars have set this property by default. When I removed all of
these declarations from your CSS file using regex, Chromium could show
vertical rules.


Yes, I noticed this duplication also when I was looking at the .css,
Actually some had more duplication than others, and I did not know why.

For example this is duplicated 4 times

#TBL-737 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-737{border-collapse:collapse;}
#TBL-737 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-737{border-collapse:collapse;}
#TBL-737 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-737{border-collapse:collapse;}
#TBL-737 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-737{border-collapse:collapse;}

But this one earlier in the .css file, is duplicated 6 times !

#TBL-107 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-107{border-collapse:collapse;}
#TBL-107 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-107{border-collapse:collapse;}
#TBL-107 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-107{border-collapse:collapse;}
#TBL-107 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-107{border-collapse:collapse;}
#TBL-107 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-107{border-collapse:collapse;}
#TBL-107 colgroup{border-left: 1px solid black;border-right:1px solid black;}
#TBL-107{border-collapse:collapse;}

This is why the .css is so large. May be this also affects performance
og loading the pages as I noticed they are slow to come up at first.




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 \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}\fi
 \xdef\VBorder{\VBorder}\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



Thank you for the fix. I will test the above later tonight, The HTML build
takes about 10 hrs to finish (pdf about 1 hr) so I will see the result
sometime tomorrow.

--Nasser


Re: [tex4ht] question about missing table vertical lines in HTML after 118 subsections have been processed.

2022-02-03 Thread Michal Hoftich
Hi Nasser,

>
> All subsection use the same latex code to make a small
> table. The table shows OK with vertical lines showing
> up to subsection 118, then after that the same table
> starts showing with the vertical lines missing !
>

I think that it is an issue with browsers that are based on Chromium
or Webkit. They seem to ignore table border instructions at some
point. It is true that your CSS file is huge, it has hundreds of
thousands of lines. This huge number is caused by tables.

I dug into the code that handles vertical rules and found that it
generates some unnecessary instructions, in particular lines like
#TBL-5586{border-collapse:collapse;}. These can be safely removed, as
all tabulars have set this property by default. When I removed all of
these declarations from your CSS file using regex, Chromium could show
vertical rules.

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 \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}\fi
\xdef\VBorder{\VBorder}\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