Longtable, colortbl and tags clash

[DavidEGx]

Hi,

Got this latex code:

\DocumentMetadata{
  lang        = en,
  pdfversion  = 2.0,
  pdfstandard = ua-2,
  testphase   = {phase-III, table}
}

\documentclass[10pt]{article}

\usepackage{longtable}
\usepackage[table]{xcolor}

\begin{document}

\begin{longtable}{ p{0.3\textwidth} p{0.3\textwidth} }
\hline Row 1 & 105 \\
\end{longtable}

\end{document}                                        

Then I run:

$ lualatex test.tex

and got:

...
(/opt/texlive/2024/texmf-dist/tex/latex/pdfmanagement-testphase/xcolor-patches-
tmp-ltx.sty) (/opt/texlive/2024/texmf-dist/tex/latex/colortbl/colortbl.sty)
(./latest.aux) (/opt/texlive/2024/texmf-dist/tex/latex/base/ts1cmr.fd)
(/opt/texlive/2024/texmf-dist/tex/context/base/mkii/supp-pdf.mkii
[Loading MPS to PDF converter (version 2006.09.02).]
)
! Undefined control sequence.
<argument> \ERRORtbl 
          /row
l.18 \end
       {longtable}

Same thing using xelatex.

Either removing:

• table in line 5.
• \usepackage[table]{xcolor} in line 11.
• \hline in line 16.

Make it work without any issue.

[u-fischer]

colortbl overwrites the \hline definition and this breaks the tagging code.

It seems to work if one handles the multispan similar to the booktabs firstaid, but there aren't many testfiles around.

(edited to use \tbl_gdecr_row_count: instead of the internal int)

\DocumentMetadata{
  lang        = en,
  pdfversion  = 2.0,
  pdfstandard = ua-2,
  testphase   = {phase-III, table},
}

\documentclass[10pt]{article}

\usepackage{longtable}
\usepackage{colortbl}

\begin{document}
\makeatletter
\ExplSyntaxOn
    \def\LT@@hline{%
      \ifx\LT@next\hline
        \global\let\LT@next\@gobble
        \ifx\CT@drsc@\relax
          \gdef\CT@LT@sep{%
            \noalign{\penalty-\@medpenalty\vskip\doublerulesep}}%
        \else
          \gdef\CT@LT@sep{%
            \multispan\LT@cols{%
              \tag_mc_begin:n{artifact}
              \CT@drsc@\leaders\hrule\@height\doublerulesep\hfill
              \tag_mc_end: \tbl_gdecr_row_count:
            }\cr}%
        \fi
      \else
        \global\let\LT@next\empty
        \gdef\CT@LT@sep{%
          \noalign{\penalty-\@lowpenalty\vskip-\arrayrulewidth}}%
      \fi
      \ifnum0=`{\fi}%
      \multispan\LT@cols
       {\tag_mc_begin:n{artifact}
        \CT@arc@\leaders\hrule\@height\arrayrulewidth\hfill
        \tag_mc_end: \tbl_gdecr_row_count:
       }\cr
      \CT@LT@sep
      \multispan\LT@cols
       {\tag_mc_begin:n{artifact}
        \CT@arc@\leaders\hrule\@height\arrayrulewidth\hfill
        \tag_mc_end: \tbl_gdecr_row_count: 
       }\cr
      \noalign{\penalty\@M}%
      \LT@next}

\ExplSyntaxOff

\begin{longtable}{ p{3cm}p{3cm}}
\hline 
Row 1 & 105 \\
\hline\hline 
\end{longtable}

\end{document}              

[FrankMittelbach]

so the cause is xcolor loading colrtbl, right? so we should probably change the issue title to mention colortbl and then mark for now as not fully compatible

[davidcarlisle]

This should be fixed by the colortbl update in the above comment, I'll release that to ctan today