避免在双列文章中 \maketitle 后缩进

Question

twocolumn如何自动避免带有标题的 article.cls 文档第一段的缩进？请注意，我正在编写的文档有一个自定义的\@maketitle。例如：

\documentclass[twocolumn]{article}

\makeatletter
% The following works in onecolumn mode, but not twocolumn
\def\@maketitle{\begin{center}\@title\end{center}\noindent}
% Can also place \aftergroup\@afterindentfalse\aftergroup\@afterheading
% at the end of macro (see https://tex.stackexchange.com/a/250327/).
\makeatother

\title{Title}

\begin{document}
\maketitle
This paragraph starts with an indent (unless you manually place a \verb|\noindent| at 
its start).

\section{Section Title}
In contrast \verb|\section{...}| does not produce an indent.
\end{document}

生成一个在第一段开头（紧接着\maketitle）有缩进的文档。我想通过对序言进行一些更改来消除该缩进（而不是\noindent在主文档中插入）。

Answer 1

正常情况下这里应该可以工作：

\documentclass[twocolumn]{article}

\usepackage{etoolbox}
\makeatletter
\appto\maketitle{\@afterindentfalse\@afterheading}{}{}
\makeatother
\title{Title}

\begin{document}
\maketitle

This paragraph starts with an indent (unless you manually place a \verb|\noindent| at
its start).

\section{Section Title}
In contrast \verb|\section{...}| does not produce an indent.
\end{document}

Answer 2

您可以重新定义\maketitle以将其包含\noindent在其末尾：

\documentclass[twocolumn]{article}

\makeatletter
% The following works in onecolumn mode, but not twocolumn
\def\@maketitle{\begin{center}\@title\end{center}\noindent}
% Can also place \aftergroup\@afterindentfalse\aftergroup\@afterheading
% at the end of macro (see https://tex.stackexchange.com/a/250327/).
\makeatother

\edef\maketitle{\unexpanded\expandafter{\maketitle\noindent}}

\title{Title}

\begin{document}
\maketitle
This paragraph starts with an indent (unless you manually place a \verb|\noindent| at 
its start).

\section{Section Title}
In contrast \verb|\section{...}| does not produce an indent.
\end{document}