This MWE gives an error with tex4ht, but compiles with no error in pdflatex
\documentclass[12pt]{report}
\usepackage{arydshln}
\begin{document}
\begin{tabular}{|l|l|l|}\hline
text
& text 1
& text 2
\\\hline
\end{tabular}
\end{document}
The error is htlatex foo.tex
(/usr/local/texlive/2014/texmf-dist/tex/generic/tex4ht/html4.4ht)
(/usr/local/texlive/2014/texmf-dist/tex/generic/tex4ht/html4-math.4ht))
(./foo.aux)
! Undefined control sequence.
\adl@@cr ...tempdima \xdef \adl@rowsL {\adl@rowsL
(\adl@colsL /\number \adl@...
l.10 \\\hline
?
When commenting out the \usepackage{arydshln} then the error goes away.
Is this a known conflict with arydshln and tex4ht? Using TL 2014 on linux.
*File List*
report.cls 2014/09/29 v1.4h Standard LaTeX document class
size12.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
arydshln.sty 2004/08/31 v1.71
***********
Update
FYI
This problem still shows up in TL 2020:
make4ht -ulm default -a debug foo.tex "mathjax,htm"
(base) >make4ht -ulm default -a debug index.tex "mathjax,htm"
[INFO] mkparams: Output dir:
[INFO] mkparams: Compiler: dvilualatex
[INFO] mkparams: Latex options: -jobname=index
[INFO] mkparams: tex4ht.sty: xhtml,mathjax,htm,charset=utf-8
[INFO] mkparams: tex4ht: -cmozhtf -utf8
[INFO] mkparams: build_file: index.mk4
[INFO] mkparams: Output format: html5
[STATUS] make4ht: Conversion started
[STATUS] make4ht: Input file: index.tex
[INFO] mkutils: Load extension common_domfilters
[INFO] mkutils: Cannot open config file index.mk4
[INFO] make4ht-lib: setting param correct_exit
[INFO] make4ht-lib: setting param correct_exit
[INFO] make4ht-lib: setting param correct_exit
[INFO] make4ht-lib: setting param ext
[INFO] make4ht-lib: Adding: ext dvi
[INFO] htlatex: LaTeX call: dvilualatex --interaction=errorstopmode -jobname=index '\makeatletter\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCode"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\def\Link#1.a.b.c.{\g@addto@macro\@documentclasshook{\RequirePackage[#1,html]{tex4ht}}\let\HCode\documentstyle\def\documentstyle{\let\documentstyle\HCode\expandafter\def\csname tex4ht\endcsname{#1,html}\def\HCode####1{\documentstyle[tex4ht,}\@ifnextchar[{\HCode}{\documentstyle[tex4ht]}}}\makeatother\HCode xhtml,mathjax,htm,charset=utf-8,html5.a.b.c.\input "\detokenize{index.tex}"'
This is LuaTeX, Version 1.12.0 (TeX Live 2020)
restricted system commands enabled.
LaTeX2e <2020-02-02> patch level 5
L3 programming layer <2020-08-07> (./index.tex (/usr/local/texlive/2020/texmf-dist/tex/latex/base/report.cls
Document Class: report 2019/12/20 v1.4l Standard LaTeX document class
(/usr/local/texlive/2020/texmf-dist/tex/latex/base/size12.clo)) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/tex4ht.sty) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/usepackage.4ht) (/usr/local/texlive/2020/texmf-dist/tex/latex/arydshln/arydshln.sty) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/tex4ht.4ht
::::::::::::::::::::::::::::::::::::::::::
TeX4ht info is available in the log file
::::::::::::::::::::::::::::::::::::::::::
) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/tex4ht.sty
--- needs --- tex4ht index ---
(./index.tmp) (./index.xref) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/latex.4ht (/usr/local/texlive/2020/texmf-dist/tex/latex/base/fontenc.sty (/usr/local/texlive/2020/texmf-dist/tex/latex/lm/ot1lmr.fd)) (/usr/local/texlive/2020/texmf-dist/tex/generic/kastrup/binhex.tex) (/usr/local/texlive/2020/texmf-dist/tex/latex/base/tuenc.def) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/tuenc-luatex.4ht
(/usr/local/texlive/2020/texmf-dist/tex/luatex/luatexbase/luatexbase.sty (/usr/local/texlive/2020/texmf-dist/tex/luatex/ctablestack/ctablestack.sty)) (/usr/local/texlive/2020/texmf-dist/tex/lualatex/luacode/luacode.sty (/usr/local/texlive/2020/texmf-dist/tex/generic/iftex/ifluatex.sty (/usr/local/texlive/2020/texmf-dist/tex/generic/iftex/iftex.sty))) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht)) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht)
(/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/mathjax-latex-4ht.4ht (/usr/local/texlive/2020/texmf-dist/tex/latex/etoolbox/etoolbox.sty) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/usepackage.4ht) (/usr/local/texlive/2020/texmf-dist/tex/latex/l3kernel/expl3.sty (/usr/local/texlive/2020/texmf-dist/tex/latex/l3backend/l3backend-dvips.def)) (/usr/local/texlive/2020/texmf-dist/tex/latex/environ/environ.sty (/usr/local/texlive/2020/texmf-dist/tex/latex/trimspaces/trimspaces.sty)))) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht)) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/fontmath.4ht (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht)
(/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht)) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/report.4ht (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht)) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/unicode.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html4-math.4ht) (/usr/local/texlive/2020/texmf-dist/tex/generic/tex4ht/html5.4ht)) (./index.aux) (/usr/local/texlive/2020/texmf-dist/tex/latex/base/ts1cmr.fd) (/usr/local/texlive/2020/texmf-dist/tex/latex/lm/ot1lmtt.fd)
! Undefined control sequence.
\adl@@cr ...pth <\dp \@arstrutbox \adl@depth \dp \@arstrutbox \fi \advance \adl@height \adl@depth \global \advance \adl@totalheight \adl@height \@tempdima #1\relax \global \advance \adl@totalheight \@tempdima \xdef \adl@rowsL {\adl@rowsL
(\adl@colsL /...
l.8 \\\hline
?
\hlineor\cline, so it is no surprise that it clashes with TeX4ht. I will make bug report on TeX4ht issue tracker, but cannot tell when it will be fixed, because I am quite overwhelmed by requests for my various projects right now.