# How to make at operator while listing program?

When I am inserting mathematica codes with the package listing, I find that it recognize at as a letter rather than an operator.

This comes into a result that, for example when typing N@Table[10,5], the latex complier won't think that N and Table are keywords, but will check N@Table and conclude that this is not a keyword.

Otherwise I should tell mathematica "Insert a space arround @", but I do not know how to do this, either.

Codes:

\documentclass[a4paper,10pt]{article}
\usepackage{listings}
\begin{document}
\begin{lstlisting}[language=Mathematica,frame=single]
N@Table
N @ Table
\end{lstlisting}
\end{document}


result: Expected result: both N and Table in the first line are in bold face.

• Without seeing you code, giving correct suggestion is not possible, please post the MWE of your code... – MadyYuvi Sep 28 '20 at 4:47
• @MadyYuvi Sorry. I have added the minimum working code now. – CY Qian Oct 4 '20 at 9:38

Now I solve this question. This is hidden deeeeeeply inside the document.

An option named alsoother can be used here. (Note the last but two line.) My Full code:

\lstdefinestyle{mma}{
% backgroundcolor=\color{white},   % choose the background color; you must add \usepackage{color} or \usepackage{xcolor}; should come as last argument
% basicstyle=\footnotesize,        % the size of the fonts that are used for the code
% breakatwhitespace=false,         % sets if automatic breaks should only happen at whitespace
% breaklines=true,                 % sets automatic line breaking
% captionpos=b,                    % sets the caption-position to bottom
% deletekeywords={...},            % if you want to delete keywords from the given language
escapeinside={!}{!)},          % if you want to add LaTeX within your code
% extendedchars=true,              % lets you use non-ASCII characters; for 8-bits encodings only, does not work with UTF-8
% firstnumber=1000,                % start line enumeration with line 1000
frame=l,                           % adds a frame around the code
% keepspaces=true,                 % keeps spaces in text, useful for keeping indentation of code (possibly needs columns=flexible)
keywordstyle=\bfseries\color{blue},       % keyword style
language=Mathematica,                 % the language of the code
morekeywords={Echo,FileNameJoin,Log10},            % if you want to add more keywords to the set
numbers=left,                    % where to put the line-numbers; possible values are (none, left, right)
numbersep=5pt,                   % how far the line-numbers are from the code
numberstyle=\tiny\color{gray}, % the style that is used for the line-numbers
rulecolor=\color{black},         % if not set, the frame-color may be changed on line-breaks within not-black text (e.g. comments (green here))
% showspaces=false,                % show spaces everywhere adding particular underscores; it overrides 'showstringspaces'
% showstringspaces=false,          % underline spaces within strings only
% showtabs=false,                  % show tabs within strings adding particular underscores
% stepnumber=2,                    % the step between two line-numbers. If it's 1, each line will be numbered
stringstyle=\color{purple!40!black},     % string literal style
tabsize=2,                     % sets default tabsize to 2 spaces
% title=\lstname                   % show the filename of files included with \lstinputlisting; also try caption instead of title
alsoother={@,_},                  % Page 46 of document, make these into other (= operator)
}