# How to make inline listings wrap nicely?

Does anyone know how to make inline listings wrap nicely? Take a look at the screenshot that I attached below. The code example in the second line goes outside the text margin.

Also, any ideas why inline listing \lstinline|{ print "" }| on the 3rd line of text removes the space after the quotes? It shows as { print ""} in the book, even though my listing is { print "" }.

Here is the whole LaTeX for the document you see in the screenshot,

\documentclass[11pt]{memoir}

\usepackage{listings}
\usepackage{xcolor}
\usepackage{textcomp}
\usepackage[T1]{fontenc}

\begin{document}

\newcommand{\bb}[1]{\textbf{#1}}
\newcommand{\code}[1]{\emph{#1}}
\newcommand{\n}{\lstinline|\n|}

\definecolor{codebg}{HTML}{EEEEEE}
\definecolor{codeframe}{HTML}{CCCCCC}

\lstset{language=Awk}
\lstset{backgroundcolor=\color{codebg}}
\lstset{frame=single}
\lstset{framesep=10pt}
\lstset{rulecolor=\color{codeframe}}
\lstset{upquote=true}
\lstset{basicstyle=\ttfamily}

\lstset{emph={awk}, emphstyle=\textbf}

\chapter{Line Spacing}
\label{linespacing}    % So I can \ref{filespacing} later.

\section{Double-space a file}
\label{doublespacefile}

\begin{lstlisting}
awk '1; { print "" }'
\end{lstlisting}

So how does this one-liner work? A one-liner is an Awk program and every Awk program consists of a sequence of pattern-action statements \lstinline|pattern { action statements }|. In this case there are two statements \lstinline|1| and \lstinline|{ print "" }|. In a pattern-action statement either the pattern or the action may be missing. If the pattern is missing, the action is applied to every single line of input. A missing action is equivalent to \lstinline|{ print }|. Thus, this one-liner translates to:

\begin{lstlisting}
awk '1 { print }; { print "" }'
\end{lstlisting}

An action is applied only if the pattern matches, i.e., pattern is true. Since \code1 is always true, this one-liner translates further into two print statements:

\begin{lstlisting}
awk '{ print }; { print "" }'
\end{lstlisting}

Every print statement in Awk is silently followed by the \code{ORS} - Output Record Separator variable, which is a newline by default. The first print statement with no arguments is equivalent to \lstinline{print \$0}, where \code{\$0} is the variable holding the entire line (including the newline at the end). The second print statement seemingly prints nothing, but knowing that each print statement is followed by \code{ORS}, it actually prints a newline. So there we have it, each line gets double-spaced.

We can also drop the semicolon and write it as:

\end{document}

-
Oh sorry. Editing my question right now. – Peteris Krumins May 2 '11 at 9:37
@Ulrike, I have added a complete LaTeX document, if you pdflatex it, it will produce a document that matches the image that I posted. – Peteris Krumins May 2 '11 at 9:41
@PeterisKrumins, the second part of your question seems to be a duplicate of tex.stackexchange.com/q/41934/1340 (still unsolved, unfortunately). – Blaisorblade Feb 13 '12 at 14:18

You can enable line breaking with the option breaklines, but I doubt that you will like the result (e.g. there will be line breaks after the braces) as listings can't know what you find "nice looking". I would probably split the code in two or more \lstinline commands.
The missing space is at my opinion a bug. The parsing for string delimiters loose the space (but only for fixed-width fonts). You can either use two spaces after a ", or remove the quote as string delimiter with \lstset{deletestring=[b]{"}}