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I want to have subsections appear like "Article 1: Foo" when I enter \subsection{Foo}, but like "Article 1" (without the colon) when I enter \subsection{} (without a title). Is there a way to do this?

Here's a MWE of what I have now:

\documentclass{article}

\usepackage{titlesec}

\newcounter{artikel}
\setcounter{artikel}{1}

\renewcommand{\thesubsection}{\arabic{artikel}}
\titleformat{\subsection}{\large\bfseries}{}{0pt}{Article \thesubsection: \refstepcounter{artikel}}

\begin{document}

\subsection{Foo}
\subsection{}

\end{document}

Which produces

Article 1: Foo

Article 2:

But I want it to produce:

Article 1: Foo

Article 2

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6
  • Should be possible, but the implementation depends on the document class
    – user31729
    Commented Feb 9, 2016 at 16:00
  • @ChristianHupfer I am using the article class. I added a MWE for clarity.
    – LSchoon
    Commented Feb 9, 2016 at 16:09
  • The usual subsection numbers (in front of the subsection title) should vanish and be replaced by Article ....?
    – user31729
    Commented Feb 9, 2016 at 16:33
  • @ChristianHupfer That's right, with the number after Article being the subsection number (or rather another predefined counter, as I want the subsection nubers to increase throughout several sections). I just realized this last point might be important for the answer, will edit the MWE.
    – LSchoon
    Commented Feb 9, 2016 at 16:37
  • Perhaps titlesec is the easier option here
    – user31729
    Commented Feb 9, 2016 at 16:49

1 Answer 1

Reset to default
4

You can do that withetoolbox and the explicitoption of titlesec. Also note that if you want to use starred subsections, you can have a different formatting with the numberless key:

\documentclass{article}

\usepackage[explicit]{titlesec}
\usepackage{etoolbox}
\newcounter{artikel}
\setcounter{artikel}{1}

\renewcommand{\thesubsection}{\arabic{artikel}}
\titleformat{\subsection}{\large\bfseries}{}{0pt}{Article \thesubsection\notblank{#1}{:~}{}#1\refstepcounter{artikel}}

\begin{document}

    \subsection{Foo}
    \subsection{ }

\end{document}

enter image description here

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2
  • Thanks for your answer! This nearly works, but now the subsection title ('Foo' in the example) drops out. It can be replaced by changing the last argument of \titleformat to Article \thesubsection\notblank{#1}{:}{} #1\refstepcounter{artikel}
    – LSchoon
    Commented Feb 9, 2016 at 18:43
  • Oops! You're right, I had forgotten to add #1, as required by the explicit option. It's corrected now. Thanks for pointing it.
    – Bernard
    Commented Feb 10, 2016 at 1:55

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