%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-2-34 on page I-317 in "Defining your own variants".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{183.0pt}

%StartShownPreambleCommands
\usepackage{fancyvrb}
\fvset{gobble=2}
%StopShownPreambleCommands

\begin{document}
\noindent A line of text to show the left margin.
\begin{Verbatim}
  The new `normal' case.
\end{Verbatim}
With this default we need to watch out for
unindented verbatims to avoid results like this:
\begin{Verbatim}
Not good now for verbatims
without indentation!
\end{Verbatim}
In that case do this:
\begin{Verbatim}[gobble=0]
We now need to explicitly
cancel the gobble occasionally!
\end{Verbatim}
\end{document}