algorithm2e - Caption without text

Question

In the following code I would like to have a caption without text. In the following MWE there are unwanted colons because the caption is Algorithm 1: .

How can I fix that ?

\documentclass[12pt]{article}

\usepackage{algorithm2e}

\begin{document}

\begin{algorithm}
    \caption{}

    \While{\dots}{
        \dots
    }
\end{algorithm}

\end{document}

Answer 1

Set the relevant options:

\documentclass[12pt]{article}

\usepackage{algorithm2e}

\begin{document}

\begin{algorithm}
\SetAlgoCaptionSeparator{}% no separator, default colon
\SetAlCapNameSty{}% no caption text

 \While{\dots}{
   \dots
 }

\caption{}

\end{algorithm}

\end{document}

If all your algorithms have no text in captions, you can place the two commands in the preamble:

\documentclass[12pt]{article}

\usepackage{algorithm2e}

\SetAlgoCaptionSeparator{}% no separator, default colon
\SetAlCapNameSty{}% no caption text

\begin{document}

\begin{algorithm}

 \While{\dots}{
   \dots
 }

\caption{This text won't appear}

\end{algorithm}

\end{document}

If only some of the captions should be void, you can do

\documentclass[12pt]{article}

\usepackage{algorithm2e}

\newcommand{\voidcaption}[2][]{%
  \SetAlgoCaptionSeparator{}% no separator, default colon
  \SetAlCapNameSty{}% no caption text
  \caption{}%
}

\begin{document}

\begin{algorithm}

 \While{\dots}{
   \dots
 }

\voidcaption{This text won't appear}

\end{algorithm}

\end{document}

I'd not define \voidcaption without arguments, so that it would be easy to go back and typeset the given text instead.