Hi The correct way that a one can have a reference to a lstlisting environment is by using \lstset, but it seems that reftex does not support this.
Please consider
,----
| \documentclass{article}
| \usepackage[numbered,framed]{matlab-prettifier}
| \usepackage[colorlinks]{hyperref}
| \begin{document}
| \section{Label works with latex}
|
|
\lstset{style=Matlab-editor,basicstyle=\mlttfamily,escapechar=",mlshowsectionrules=true,mathescape=true,morecomment={[s]{\%\{}{\%\}}},language=Matlab,label=parallel,caption=
,captionpos=b,numbers=none}
| \begin{lstlisting}
| [num,den]=series(num1,den1,num2,den2)
| [num,den]=parallel(num1,den1,num2,den2)
| [num,den]=feedback(num1,den1,num2,den2)
| \end{lstlisting}
| The reference works \ref{parallel}, but reftex does encounter the label
| \section{Label works with reftex}
|
\lstset{style=Matlab-editor,basicstyle=\mlttfamily,escapechar=",mlshowsectionrules=true,mathescape=true,morecomment={[s]{\%\{}{\%\}}},language=Matlab,label=,caption=
,captionpos=b,numbers=none}
| \begin{lstlisting}
| \label{lstl:test-matlab:1}
| [num,den]=series(num1,den1,num2,den2)
| [num,den]=parallel(num1,den1,num2,den2)
| [num,den]=feedback(num1,den1,num2,den2)
| \end{lstlisting}
| Reftex finds the label \ref{lstl:test-matlab:1} but latex ignores it!!
| \end{document}
`----
Regards
Uwe Brauer
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