Warnings when using Listings in a RTL document

[Udicoudco]

Hello all,

Attached a LyX file and its export to LaTeX code.
When compiling with XeLaTeX the exported code
I get the warning:

    \endL or \endR problem (0 missing, 1 extra) in paragraph at lines 26--27

If I replace

 \LRE{
\begin{lstlisting}
Hello
\end{lstlisting}
}

With

\begin{LTR}
\begin{lstlisting}
Hello
\end{lstlisting}
\end{LTR}

the warning is gone. Does anyone know the meaning of the warning?
Maybe it's better to use \begin{LTR} ... \end{LTR} in some cases?

Regards,
Udi
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