[Tex/LaTex] Using math mode escapes with listings enabled fancyvrb

fancyvrblistingsmath-modeverbatim

I am trying to escape math mode within Verbatim, using this answer. This works fine, until I use the listings package with fancyvrb=true

\documentclass{article}
\usepackage{fancyvrb}
\usepackage{listings}
\lstset{
% fancyvrb=true,%
}

\begin{document}

\begin{Verbatim}[commandchars=\\\{\},codes={\catcode`$=3\catcode`^=7}]
x=1/sqrt(z**2) ! $\frac{1}{\sqrt{z^2}}$
\end{Verbatim}

\end{document}

If I enable the fancyvrb=true, I get the following error: Missing $ inserted. And then nothing works.

EDIT: Taking the idea of adding mathescape=true from this answer, it seems to work in some cases, in others not:

\documentclass{article}
\usepackage{fancyvrb}
\usepackage{listings}
\lstset{
fancyvrb=true,%
mathescape=true,%
}

\begin{document}

Outside of verbatim: $\mathsf{lb}_\mathsf{pre}$:

\begin{Verbatim}[commandchars=\\\{\},codes={\catcode`$=3\catcode`^=7}]
x=1/sqrt(z**2) ! $\frac{1}{\sqrt{z^2}}$
Vertex = ($\mathsf{lb}_\mathsf{pre}$: Label, $\mathsf{lb}_\mathsf{post}$: Label)
\end{Verbatim}

\end{document}

The subscript still doesn't work inside the verbatim:

enter image description here

If there is no solution to this, how could I disable listings temporarily for one particular Verbatim block?

Best Answer

Change locally the setting with formatcom:

\documentclass{article}
\usepackage{fancyvrb}
\usepackage{listings}
\lstset{
 fancyvrb=true,%
}

\begin{document}

\begin{Verbatim}[commandchars=\\\{\},
  codes={\catcode`$=3\catcode`^=7},
  formatcom={\lstset{fancyvrb=false}}]
x=1/sqrt(z**2) ! $\frac{1}{\sqrt{z^2}}$
\end{Verbatim}

\begin{Verbatim}[commandchars=\\\{\},
  codes={\catcode`$=3\catcode`^=7\catcode`_=8},
  formatcom={\lstset{fancyvrb=false}}]
x=1/sqrt(z**2) ! $\frac{1}{\sqrt{z^2}}$
Vertex = ($\mathsf{lb}_\mathsf{pre}$: Label, $\mathsf{lb}_\mathsf{post}$: Label)
\end{Verbatim}

\end{document}

The \lstset is local, so it won't propagate to the following listings environments. For the subscripts you have to reset also the category code of _.

enter image description here

Related Solutions

[Tex/LaTex] Integrating listings with fancyvrb

define your own environment or use explicitely \lstset:

\documentclass{beamer}
\usetheme{bars}   
\usepackage{xcolor}
\usepackage[T1]{fontenc}
\usepackage[scaled=0.85]{beramono}
\usepackage{hyperref}
\usepackage{fancyvrb}
\usepackage{listings}
\usepackage{graphicx}
\usepackage{mathtools}

\lstdefinestyle{Java}{%
language=Java,                % choose the language of the code
basicstyle=\scriptsize\ttfamily, % the size of the fonts that are used
keywordstyle=\bfseries,
numbers=left,                   % where to put the line-numbers
numberstyle=\tiny,      % the size of the fonts that are used for
stepnumber=1,                   % the step between two line-numbers. 
numbersep=5pt,                  % how far the line-numbers are from the code
showspaces=false,               % show spaces adding particular underscores
showstringspaces=false,         % underline spaces within strings
showtabs=false,                 % show tabs within strings adding particular
%frame=single,           % adds a frame around the code
tabsize=2,          % sets default tabsize to 2 spaces
captionpos=b,           % sets the caption-position to bottom
breaklines=true,        % sets automatic line breaking
breakatwhitespace=false,   
%escapeinside={\%*}{*)},     % if you want to add a comment within your code
fancyvrb=true,
}

\newenvironment{JavaCode}
  { \VerbatimEnvironment%
    \lstset{style=Java}
    \begin{Verbatim} }
  { \end{Verbatim}  }  

\begin{document}

\begin{JavaCode}
import java.util.Vector;

abstract class Figur{
  abstract double getFlaeche();
}

class Rechteck extends Figur{
...
\end{JavaCode}



\lstset{style=Java}
\begin{Verbatim}
import java.util.Vector;

abstract class Figur{
  abstract double getFlaeche();
}

class Rechteck extends Figur{
...
\end{Verbatim}

\end{document}

enter image description here

[Tex/LaTex] LaTeX commands in Verbatim using fancyvrb and listings

define an optional argument for the Verbatim environment:

\documentclass{beamer}
\usepackage[T1]{fontenc}
\usepackage[scaled=0.85]{beramono}%% monotype with bold variant  
\usetheme{bars}

\usepackage{xcolor}
\usepackage[T1]{fontenc}
\usepackage{hyperref}
\usepackage{listings}
\usepackage{setspace}
\usepackage{graphicx}
\usepackage{subfiles}
\usepackage{alltt}
\usepackage{mathtools}
\usepackage{fancyvrb}

\setcounter{tocdepth}{1}

\lstdefinestyle{JavaPlain}{ %
basicstyle=\scriptsize\ttfamily, % the size of the fonts 
numbers=left,                   % where to put the line-numbers
numberstyle=\tiny,      % the size of the fonts that are used for th
stepnumber=1,                   % the step between two line-numbers
numbersep=5pt,                  % how far the line-numbers are from the code
backgroundcolor=\color{white},  % choose the background color
showspaces=false,               % show spaces adding particular underscores
showstringspaces=false,         % underline spaces within strings
showtabs=false,                 % show tabs within strings adding 
frame=single,           % adds a frame around the code
tabsize=2,          % sets default tabsize to 2 spaces
captionpos=b,           % sets the caption-position to bottom
breaklines=true,        % sets automatic line breaking
breakatwhitespace=false,    % sets if automatic breaks should only happen
fancyvrb=true,
}

\newcommand\Red[1]{\textcolor{red}{#1}}
\newenvironment{JavaCodePlain}[1][]
  { \VerbatimEnvironment%
    \begin{Verbatim}[#1]}
  { \end{Verbatim}  } 

\begin{document}

\begin{frame}[fragile]
 \frametitle{Latex commands in Verbatim}
   \begin{JavaCodePlain}[commandchars=\\!|]
   \textbf!package com.test;|  // This does not become bold
   \textit!package com.test2;| //This is italicized
   \Red!\textbf!package com.test3;|| //Whole bunch of errors

    public class Employee {
      ...
    }
  \end{JavaCodePlain}
\end{frame}

\end{document}

However, you should use a monotype font which has a bold variant like beramono:

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Integrating listings with fancyvrb

[Tex/LaTex] LaTeX commands in Verbatim using fancyvrb and listings

Related Question