是否有一种标准的方法来排版居中的并排文本？

Question

我最近发现自己在写文档时，文本是“居中并排的”。我解决这个问题的方法是使用环境align。例如，代码

\documentclass{beamer}

\usepackage{amsmath}

\begin{document}
Two great bands are
\begin{align*}
  \textnormal{Led Zeppelin} && \textnormal{Pink Floyd}
\end{align*}
The members of the Beatles were
\begin{align*}
  \textnormal{John Lennon} && \textnormal{Paul McCartney} && \textnormal{Ringo Starr} && \textnormal{George Harrison}
\end{align*}
\end{document}

生产

有没有更简单的方法可以做到这一点？

我目前正在与beamer班级合作，但最好有一个通用的解决方案。

Answer 1

你可以利用在两侧center添加胶水的事实：\hfil

\documentclass[a4paper]{article}
\usepackage{xparse}
\usepackage{showframe} % for debugging

\ExplSyntaxOn
\NewDocumentCommand{\gcenter}{m}
 {
  \begin{center}
  \seq_set_split:Nnn \l_tmpa_seq { & } { #1 }
  \seq_use:Nn \l_tmpa_seq { \hfil }
  \end{center}
 }
\ExplSyntaxOff

\begin{document}

Two great bands are
\gcenter{Led Zeppelin & Pink Floyd}
The members of the Beatles were
\gcenter{John Lennon & Paul McCartney & Ringo Starr & George Harrison}
More text here

\end{document}

如果需要多条线路，则还需要做更多的工作。

\documentclass[a4paper]{article}
\usepackage{xparse}
\usepackage{showframe}

\ExplSyntaxOn
\NewDocumentCommand{\gcenter}{m}
 {
  \begin{center}
  \seq_set_split:Nnn \l_tmpa_seq { \\ } { #1 }
  \seq_map_inline:Nn \l_tmpa_seq
   {
    \seq_set_split:Nnn \l_tmpb_seq { & } { ##1 }
    \seq_use:Nn \l_tmpb_seq { \hfil }
    \\
   }
  \end{center}
 }
\ExplSyntaxOff

\begin{document}

Two great bands are
\gcenter{Led Zeppelin & Pink Floyd}
The members of the Beatles were
\gcenter{John Lennon & Paul McCartney & Ringo Starr & George Harrison}
Here are two lines
\gcenter{
  Led Zeppelin & Pink Floyd \\
  John Lennon & Paul McCartney & Ringo Starr & George Harrison
}
More text here

\end{document}