I am badly looking for a way to give all my tables the same title in the document, that is used in the list of tables via caption[title]{long description...}. The reason is that my tables originate from R (xtable), which uses the exact above format every single time I recompute them, and I cannot change that. So unfortunately I could not make use of any different solutions. This is a very important matter to me because I have a lot of tables in my document.
Here is a MWE. As you can see the titles are missing, and only the labels are visible. The indentation in the longer description is on purpose.
Edit:
I made a picture to better illustrate this:

\documentclass[a4paper, 12pt, headsepline, smallheadings]{scrreprt}
\usepackage[labelfont={small,bf}, textfont=small, labelsep=colon,singlelinecheck=false,format=plain, parindent=1em]{caption}
\newlength\myindention
\DeclareCaptionFormat{myformat}%
{#1#2\\\hspace*{\myindention}#3}
\setlength\myindention{1em}
\captionsetup{format=myformat}
\usepackage{chngcntr}
\counterwithout{table}{chapter}
\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}
\end{document}
Thanks for any help. Best regards, Tom.

\captioninside\DeclareCaptionFormat, but that only supports the mandatory – curly braced – parameter as#3, whereas#1#2are automatically generated label (“Table 1”) and separator (“:”). I’d say you use the standard format#1#2#3and move the line break into each and every caption:\caption[title]{title\\\hspace*{\myindention} description}, probably add a macro for that. – Crissov Dec 22 '13 at 01:37