%%
%% The LaTeX Companion, 3ed
%%
%% Example 13-3-11 on page II-313 in "The colon, semicolon, exclamation mark, and question mark".
%%
%% 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[english,french]{babel}
\frenchsetup{og=«, fg=»}
%StopShownPreambleCommands

\begin{document}
En français on doit mettre un «petit espace»
devant la ponctuation double: comme cela!
\selectlanguage{english}
For English this is not done: as shown here!
\end{document}