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parskip 小节标题间距

tag-icon • tag-icon spacing titlesec parskip
parskip 小节标题间距

我使用该parskip包有两个原因：

  1. 在段落之间添加空格。
  2. 删除段落第一行的缩进。

但是，这个包使得小节标题前后的间距变得非常宽。我尝试使用包\titlespacing中的宏titlesec来修改该空格，但似乎其他包排除了这个。它没有任何效果。

我怎样才能减少该空间？

答案1

按照我的评论的建议（利用我的回答章节标题前后的间距)，但将结果应用于小节，并减少间距。

编辑以采纳 Gustavo 的建议：1）实现可选参数\subsection；2）用作-\parskip调整后的垂直高度。

\documentclass{article}
\usepackage{parskip}
\begin{document}
\tableofcontents

\noindent\hrulefill

\section{Without Fix}

Blah blah 

\subsection{First subsection}

This is the first line of text.  Note the vertical spacing.  

\subsection{Second subsection}

Observe the spacing prior to and following the subsectioning command. Now let me
redefine a few things.

\makeatletter
\let\origsubsection\subsection
\renewcommand\subsection{\@ifstar{\starsubsection}{\nostarsubsection}}

\newcommand\nostarsubsection[2][\relax]{%
  \subsectionprelude%
  \ifx\relax#1\origsubsection{#2}\else\origsubsection[#1]{#2}\fi%
  \subsectionpostlude}

\newcommand\starsubsection[2][\relax]{%
  \subsectionprelude%
  \ifx\relax#1\origsubsection*{#2}\else\origsubsection*[#1]{#2}\fi%
  \subsectionpostlude}

\newcommand\subsectionprelude{%
  \vspace{-\parskip}% OR ANY OTHER DESIRED VALUE
}

\newcommand\subsectionpostlude{%
  \vspace{-\parskip}% OR ANY OTHER DESIRED VALUE
}
\makeatother

\section{With Fix}

Blah blah

\subsection[Alternate TOC title]{Next subsection}
Did this text raise parskip higher relative to the heading than the prior
subsection?  If so, we have succeeded.

\subsection*{Non-numbered subsection}

Here is some text.

\subsection{Final subsection}

And the result is permananent, as you can see.

\end{document}

enter image description here

答案2

由于我无法理解的原因，史蒂文拒绝了我使用的建议xparse。不过，我认为这样的答案可能会引起人们的兴趣，所以我自己提供了答案。

我赞同史蒂文的做法，即不对\subsection实施方式做任何假设：

% My standard header for TeX.SX answers:
\documentclass[a4paper]{article} % To avoid confusion, let us explicitly 
                                 % declare the paper format.

\usepackage[T1]{fontenc}         % Not always necessary, but recommended.
% End of standard header.  What follows pertains to the problem at hand.

\usepackage{parskip}
\usepackage{xparse}

\let \originalSubsection \subsection
\RenewDocumentCommand \subsection { s o m } {%
    \vspace{-\parskip}%
    \IfBooleanTF{#1}{%
        \originalSubsection*{#3}%
    }{%
        \IfValueTF{#2}{%
            \originalSubsection[#2]{#3}%
        }{%
            \originalSubsection{#3}%
        }%
    }%
    \vspace{-\parskip}%
}



\begin{document}

\tableofcontents

\section{With Fix}

Blah blah.

\subsection*{A starred subsection}
This subsection has no number, and is not included in the ToC\@.

\subsection{Normal subsection}
This subsection is normal in all respects: it is numbered, and appears in the 
ToC\@ with the same title as above.

\subsection[Short title]{A somewhat longer title}
Numbered subsection, but with a different title in the ToC\@.

\subsection*[Ignored argument]{This is possible too\ldots}
\ldots and it is a well-known issue; it doesn't hurt, anyway!

\end{document}

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