Footnotes in table captions but not in list of tables

Question

I have the following problem: My tables are formatted via caption[title]{long description...}. Now I need to add the sources to some of them as a footnote added to the caption, like in the following example:

I tried this: Using \footnote in a figure's \caption, but the problem is that the footnotes also show up in the list of tables at the beginning of the document.

Note that 'The red fox - attributes' is the [title] and the rest of the text is the {long description}, used as here: Add table titles from captions in scrreprt class

Also I am not using footnotes for every single caption, so the solution would have to be flexible in that it provides the option to add one (but not mandatory).

Is the above format possible?

Looking for a solution which works safely without undesired results.

MWE:

\documentclass[a4paper, 12pt, headsepline, smallheadings]{scrreprt}
\usepackage[labelfont={small,bf}, textfont=small, labelsep=colon,singlelinecheck=false,format=plain, parindent=1em]{caption}
\newlength\myindention
\setlength\myindention{1em} 
\usepackage{chngcntr}
\counterwithout{table}{chapter}

\let\oldcaption\caption
\renewcommand*\caption[2][]{%
\oldcaption[#1]{#1\\\hspace*{\myindention}#2}%
}

\begin{document}

\listoftables

\chapter{Introduction}
\begin{table}[h]
\caption[title table 1]{description table 1}
\fbox{content}
\end{table}

\end{document} 

Thanks.

Answer 1

Not very elegant but it does seem to work:

\documentclass[a4paper, 12pt, headsepline, smallheadings]{scrreprt}
\usepackage[labelfont={small,bf}, textfont=small, labelsep=colon,singlelinecheck=false,format=plain, parindent=1em]{caption}
\newlength\myindention
\setlength\myindention{1em}
\usepackage{chngcntr}
\counterwithout{table}{chapter}
\usepackage{xparse}

\let\oldcaption\caption
\RenewDocumentCommand\caption{D [] {} D [] {} m}{%
  \def\tempa{}%
  \def\tempb{#1}%
  \def\tempc{#2}%
  \ifx\tempa\tempb\def\tempb{#3}\fi%
  \ifx\tempa\tempc\let\tempc\tempb\fi%
  \oldcaption[\tempb]{\tempc\\\hspace*{\myindention}#3}%
  }

\begin{document}

\listoftables

\chapter{Introduction}
\begin{table}[h]
\caption[title table 1][title table 1\footnotemark]{description table 1}
\fbox{content}
\end{table}

Anywhere on the same page where the float appears\footnotetext{blah}
but at least before the next footnote\footnote{the nextone}

\end{document}

I expect that somebody else will be able to suggest something better, though, so I'd only recommend this if time is of the essence!

Answer 2

If the only difference is that you sometimes need a \footnotemark at the end of the title, you can define a toggle (generalization of the starred macros) + that add it.

\documentclass{scrreprt}

\usepackage[labelfont={small,bf}, textfont=small, labelsep=colon,
    singlelinecheck=false,format=plain, parindent=1em]{caption}


\usepackage{xparse}

\newlength\myindention
\setlength\myindention{1em} 

\let\oldcaption\caption
\RenewDocumentCommand { \caption } { t{+} O{} m } {%
    \oldcaption[#2]{%
        #2%
        \IfBooleanT{#1}{\footnotemark}
        \\%
        \hspace*{\myindention}#3
    }%
}

\begin{document}

\listoftables

\chapter{Introduction}
\begin{table}[h]
\caption[title table 1]{description table 1}
\fbox{content}
\end{table}

\begin{table}[h]
\caption+[title table 2]{description table 2}
\fbox{content}
\end{table}
\footnotetext{Source.}

\end{document}

Then \caption works as in your MWE and \caption+ does the same but adds \footnotemark at the end of the title (that is the \IfBooleanT line). To make it clear:

• table with source: \caption+[title]{description} and \footnotetext afterwards
• table without source: \caption[title]{description} only