[Tex/LaTex] Multiline Matlab comments in package Listings

Question

I am using the package listings to include some Matlab code in my report.
It works well with comments beginning by % but does not recognise multiline comments %{ ... %}:

\usepackage{listings}
\lstset{language=Matlab}
...
\begin{lstlisting}
% normal comment
MATLAB code
%{
This is
a multiline
comment
%}
function [x,y] = test(x)
\end{lstlisting}

gives

instead of

in Matlab.

How can I change \lstset to make it work?

Answer 1

My recommendation would be to use the package matlab-prettifier, which is based on listings but provides enhanced features for MATLAB code above and beyond those provided by listings' Matlab language definition (including support for block comments):

\documentclass{article}
\usepackage{matlab-prettifier}
\lstset{style=Matlab-editor}

\begin{document}
\begin{lstlisting}
% normal comment
MATLAB code
%{
This is
a multiline
comment
%}
function [x,y] = test(x)
\end{lstlisting}
\end{document}

If, for some reason, you must use listings with its existing implementation of the Matlab language, you can add support for block comments by setting the package's morecomment key:

morecomment=[s]{\%\{}{\%\}}

Here, [s] signifies that we are looking for two delimiters, the first to open a block comment and the second to close it. The following brace groups contain the opening and closing delimiters for a block comment, respectively. Note that both the percent sign and the individual open/close braces must be escaped by backslashes when defining the comment delimiters.

\documentclass{article}
\usepackage{listings}
\lstset{
  language=Matlab,
  basicstyle=\ttfamily,
  morecomment=[s]{\%\{}{\%\}},
}

\begin{document}
\begin{lstlisting}
% normal comment
MATLAB code
%{
This is
a multiline
comment
%}
function [x,y] = test(x)
\end{lstlisting}
\end{document}