Listing breaklines not working

Question

I have a problems with Listings in Latex. Breaklines is not working. Can anyone see what I have done wrong? Thank you.

\lstdefinestyle{mystyle}{
    backgroundcolor=\color{backcolour},   
    commentstyle=\color{codegreen},
    keywordstyle=\color{magenta},
    numberstyle=\tiny\color{codegray},
    stringstyle=\color{codepurple},
    basicstyle=\small,
    breakatwhitespace=false,  
    breakindent=1em,       
    breaklines=true,                  
    keepspaces=true,                 
    numbers=left,                    
    numbersep=5pt,                      
    showspaces=false,                
    showstringspaces=false,
    showtabs=false,                  
    tabsize=2,
    postbreak = \space,
}

\lstset{style=mystyle}

\begin{lstlisting}[language=Python, caption={Split of Data Set X into training and testing subsets.}, belowcaptionskip=10pt, label={lst:traintest}, alsoletter={()[].=}]
    x_train, x_test, y_train, y_test = train_test_split(x, y, test_size=0.2, shuffle=False) 
\end{lstlisting}

\documentclass[a4paper, twoside, openright, 12pt]{report}
\makeatletter 
\def\cleardoublepage {\clearpage\if@twoside
    \ifodd \c@page
    \else \hbox{}\thispagestyle{empty}\newpage
    \if@twocolumn\hbox {}\newpage \fi\fi\fi}
\raggedbottom
\makeatother 
\usepackage{ramsstyle}
\usepackage{float}
\usepackage{parskip}
\usepackage{tikz}
\usetikzlibrary{positioning,shadows}
\usetikzlibrary{shapes,arrows}
\usetikzlibrary{shapes.multipart}
\usepackage{subfig}
\usepackage{mathtools}
\usepackage{enumitem}
\usepackage[font=small,skip=5pt]{caption}
\usepackage{chemformula}
\usepackage{booktabs}
\usepackage{commath}
\usepackage{array}
\usepackage{gensymb}

\usepackage{xcolor}
\usepackage{framed}
\usepackage{lipsum}

\colorlet{shadecolor}{blue!20}

\usepackage{arydshln}
\newcolumntype{L}[1]{>{\raggedright\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcolumntype{C}[1]{>{\centering\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcolumntype{R}[1]{>{\raggedleft\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\usepackage{inputenc}
\usepackage{notoccite}
\usepackage[bottom]{footmisc} %så fotnote på bunn av side
\usepackage[none]{hyphenat} %så ikke bindestrek
\emergencystretch 3em %så rett tekstslutt på sidene
\usetikzlibrary{shapes,arrows}
\usepackage{pdfpages}
\usepackage{hyperref}
\usepackage{fancyhdr}
\hypersetup{
    colorlinks = true,
    linkcolor = black,
    citecolor = black,
    urlcolor = black
}

\usepackage{listings}
\usepackage{color}

\definecolor{codegreen}{rgb}{0,0.6,0}
\definecolor{codegray}{rgb}{0.5,0.5,0.5}
\definecolor{codepurple}{rgb}{0.58,0,0.82}
\definecolor{backcolour}{rgb}{0.95,0.95,0.92}

\usepackage{amsmath}


\lstdefinestyle{mystyle}{
    backgroundcolor=\color{backcolour},   
    commentstyle=\color{codegreen},
    keywordstyle=\color{magenta},
    numberstyle=\tiny\color{codegray},
    stringstyle=\color{codepurple},
    basicstyle=\small,
    breakatwhitespace=false,  
    breakindent=1em,       
    breaklines=true,                  
    keepspaces=true,                 
    numbers=left,                    
    numbersep=5pt,                      showspaces=false,                
    showstringspaces=false,
    showtabs=false,                  
    tabsize=2,
    postbreak = \space,
}



\lstset{style=mystyle}


\ProvidesPackage{notoccite}[2000/07/20]
\def\@starttoc#1{%
    \begingroup
    \@fileswfalse
    \makeatletter
    \@input{\jobname.#1}%
    \endgroup
    \if@filesw
    \expandafter\newwrite\csname tf@#1\endcsname
    \immediate\openout \csname tf@#1\endcsname \jobname.#1\relax
    \fi
    \@nobreakfalse
}




%%===================================
\begin{document}
\include{front} 
\setcounter{page}{0}
\pagenumbering{roman}
\include{preface}
\include{abstract}
\include{sammendrag}
\tableofcontents
\listoffigures
\listoftables
\include{acronyms}
\include{nomenclature}
\pagenumbering{arabic}
\cleardoublepage
\setcounter{page}{1}
\fancyfoot{}
\pagestyle{fancy}
\lhead{}
\fancyfoot[LE,RO]{\thepage}
\include{chapter01}
\include{chapter02}
\include{chapter03}
\include{chapter04}
\include{chapter05}

% Include more chapters as required.
%%=========================================
\appendix
% Include more appendices as required.
%%=========================================
\bibliographystyle{IEEEtran}
\addcontentsline{toc}{chapter}{\bibname}
\bibliography{refs}

You do not apply your style to the listing using style=mystyle. — epR8GaYuh, Apr 26 '18 at 12:23
Please add a complete MWE. Where the linebreak is happening depends on the margins you are setting - at the moment your the linebreaks is placed before the y. One way to get longer lines could be linewidth=1.1\linewidth inside the the optional arguments of the listing environment, see this question for example. — epR8GaYuh, Apr 26 '18 at 12:31
I still do not understand how to make it work... No linebreak is happening at all. — Martine, Apr 26 '18 at 12:42
I think hyphenat package is the issue. Try uncommenting it out from your code and compile. Or use htt option instead of none. — Troy, Apr 26 '18 at 12:59
Yes, that worked! Thank you! But I need that package for not having hyphen in my sentences... — Martine, Apr 26 '18 at 13:06
Use htt instead. It allows hyphens for typewriter fonts (which is used in listings). Unless you have words in typewriter fonts in your normal sentences? — Troy, Apr 26 '18 at 13:08

score 3 · Accepted Answer · answered Apr 26 '18 at 13:16

\documentclass[a4paper, twoside, openright, 12pt]{report}
\usepackage{inputenc}
\usepackage[htt]{hyphenat} % <------ Use htt instead of none

\usepackage{listings}
\usepackage{hyperref}
\hypersetup{
    colorlinks = true,
    linkcolor = black,
    citecolor = black,
    urlcolor = black
}

\definecolor{codegreen}{rgb}{0,0.6,0}
\definecolor{codegray}{rgb}{0.5,0.5,0.5}
\definecolor{codepurple}{rgb}{0.58,0,0.82}
\definecolor{backcolour}{rgb}{0.95,0.95,0.92}

\lstdefinestyle{mystyle}{
    backgroundcolor=\color{backcolour},   
    commentstyle=\color{codegreen},
    keywordstyle=\color{magenta},
    numberstyle=\tiny\color{codegray},
    stringstyle=\color{codepurple},
    basicstyle=\small,
    breakatwhitespace=false,  
    breakindent=1em,       
    breaklines=true,                  
    keepspaces=true,                 
    numbers=left,                    
    numbersep=5pt,                      showspaces=false,                
    showstringspaces=false,
    showtabs=false,                  
    tabsize=2,
    postbreak = \space,
}

\lstset{style=mystyle}

\begin{document}
    \begin{lstlisting}[language=Python, caption={Split of Data Set X into training and testing subsets.}, belowcaptionskip=10pt, label={lst:traintest}, alsoletter={()[].=}]
    x_train, x_test, y_train, y_test = train_test_split(x, y, test_size=0.2, shuffle=False) 
    \end{lstlisting}
\end{document}

Use htt option instead of none for the hyphenat package. none prevents hyphenation throughout the document, whereas htt allows hyphenation in "text using Computer Modern Typewriter fonts or their equivalent".

If you so happen to have typewriter-font phrases in your main document that you don't want hyphenated, then use textnhtt{...} or {\nhttfamily ...} instead. (These are localized no-hyphenation tt environments.)

Accepting and upvoting answers is the preferred way here to say “thank you” to users who helped you. (The green tick on the left side of my answer) — Troy, Apr 26 '18 at 13:18

Listing breaklines not working

1 Answers1