Undefined control sequence \mcell@MB@ when using \diaghead

Question

When I use the \diaghead provided by makecell package, I get Undefined control sequence errors. It seems the \mcell@MB@ and \mcell@MBjot are both undefined.

Following is a simplified example adapted from Sec. 7 of doc of makecell.

\documentclass{article}
\usepackage{makecell}
\begin{document}
\makegapedcells
\begin{tabular}{|l|c|c|}\hline
  \diaghead{\theadfont Diag ColumnmnHead II}%
      {Diag Column \\Head I}{Diag\\Column Head II} &
  \thead{Second\\column} & \thead{Third\\column}\\
\end{tabular}
\end{document}

Add \setcellgapes{8pt} or some other dimension before \begin{document}. — Ross, Jul 18 '19 at 05:56

score 1 · Accepted Answer · answered Jul 18 '19 at 05:26

The problem seems to be \makegapedcells. Without this the code works fine.

\documentclass{article}
\usepackage{makecell}
\begin{document}
\begin{table}
%\makegapedcells
\renewcommand\theadset{\def\arraystretch{0.8}}%
\begin{tabular}{|l|c|c|}\hline
  \diaghead{\theadfont Diag ColumnmnHead II}{Diag Column \\Head I}{Diag Column\\ Head II} &
  \thead{Second\\column} & \thead{Third\\column}\\
\end{tabular}
\end{table}
\end{document}

Undefined control sequence \mcell@MB@ when using \diaghead

1 Answers1