为什么表中的命令不执行？

Question

我认为“etoolbox”包中的命令\apptocmd在表中不起作用。我应该怎么做？

梅威瑟：

\documentclass{article}
\usepackage{etoolbox}
\newcommand{\mycmd}[1]{%
    #1\apptocmd{\saveMyNotes}{#1}{}{}%
}
\newcommand{\saveMyNotes}{}
\begin{document}

\begin{table}
    \begin{tabular}{c}
        \mycmd{Hi} \\
        \mycmd{Hello}
    \end{tabular}
\end{table}
\saveMyNotes % <--- This command doesn't execute!!!

\end{document}

Answer 1

我找到了解决方案。我应该使用\gappto。

\documentclass{article}
\usepackage{etoolbox}
\newcommand{\mycmd}[1]{%
    #1\gappto{\saveMyNotes}{#1}{}{}%
}
\newcommand{\saveMyNotes}{}
\begin{document}

\begin{table}
    \begin{tabular}{c}
        \mycmd{Hi} \\
        \mycmd{Hello}
    \end{tabular}
\end{table}
\saveMyNotes % <--- This command doesn't execute!!!

\end{document}