具有可变行数的新表格命令

Question

我想定义一个命令来抽象一个具有可变行的复杂表环境。这是一个简单的演示：

\documentclass{article}%
\usepackage{tabularx}%

\begin{document}
\begin{tabularx}{\textwidth}{|X|X|}\hline
name 1 & description 1\\
\hline
name 2 & description 2\\
\hline
\end{tabularx}
\end{document}

根据这个问题@egreg的回答：具有可变数量参数的新命令

我在答案中定义了这样的宏https://tex.stackexchange.com/a/72915：

\makeatletter %
\newcommand{\members}{
\tabularx{\textwidth}{|X|X|} \hline
\@stepone}
\newcommand\@stepone{\@ifnextchar\stopmembers{\@membersend}{\@steptwo}}
\newcommand\@steptwo[2]{
#1 & #2 \\ \hline
\@stepone}
\newcommand\@membersend[1]{
\endtabularx
}
\makeatother

我想像这样使用它：

\begin{document}
\members
  {name 1}{description 1}
  {name 2}{description 2}
\stopmembers
\end{document}

但是，编译时出现错误：

Misplaced \crcr. \end{document}
Extra }, or forgotten $. \end{document}
Extra }, or forgotten $. \end{document}
Undefined control sequence. \end{document}
Package array Error: Illegal pream-token (\AtEndOfPackage): `c' used. \end{document}
Extra }, or forgotten $. \end{document}
Missing $ inserted. \end{document}

有人能帮助我吗？提前谢谢！

Answer 1

我不会使用诸如 之类的外国标记\members...\stopmembers。

我也不知道为什么

{name 1}{description 1}
{name 2}{description 2}

会比

\member{name 1}{description 1}
\member{name 2}{description 2}

无论如何，问题是它tabularx相当脆弱。

\documentclass{article}
\usepackage{tabularx,environ}

\makeatletter
\NewEnviron{members}{%
  \par\noindent
  \toks@={}%
  \expandafter\start@member\BODY\start@member
  \edef\BODY{\noexpand\begin{tabularx}{\textwidth}{|l|X|}
  \noexpand\hline
  \the\toks@
  \noexpand\end{tabularx}}%
  \BODY
}

\newcommand\start@member{\@ifnextchar\start@member{\@gobble}{\@member}}
\newcommand{\@member}[2]{%
  \toks@=\expandafter{\the\toks@ #1 & #2 \\ \hline}%
  \start@member
}
\makeatother

\begin{document}

\begin{members}
  {name 1}{description 1}
  {name 2}{description 2}
\end{members}

\end{document}

Answer 2

我想这就是你想要的：

\documentclass{article}
\usepackage{tabularx}
\makeatletter 
\newcommand{\members}{\def\@body{}\@stepone}
\newcommand\@stepone{\@ifnextchar\stopmembers{}{\@steptwo}}
\newcommand\@steptwo[2]%
   {\expandafter\def\expandafter\@body\expandafter{\@body#1 & #2 \\ \hline}%
    \@stepone
   }
\newcommand\stopmembers
   {\begin{tabularx}{\textwidth}{|X|X|} \hline
    \@body
    \end{tabularx}%
   }
\makeatother

\begin{document}
\noindent
\members
  {name 1}{description 1}
  {name 2}{description 2}
\stopmembers
\end{document}