Problem with redefining a language and using babel

[oalbiez]

I am working on a french book. I redefined the translation for french using :

\RequirePackage[french]{babel}
\setlength\parindent{2em}
\newcommand\figref[1]{\textbf{Figure}~\ref{#1}}
\newcommand\tabref[1]{\textbf{Tableau}~\ref{#1}}
\renewcommand{\chaptername}{Chapitre \thechapter}
\newcommand{\authorname}{\textbf{auteur: }}
\newcommand{\institutename}{\textbf{Institut: }}
...

When I use

\documentclass[12pt,mode=fancy,cite=authoryear,titlestyle=display,lang=fr]{elegantbook}

The generated document does not have the chapter number in french, it is only present in english when lang=en.

The only difference I see is in french I use babel, in english not. In spite of this, I am unable to correct the problem. Do you have any ideas?

[sikouhjw]

Please provide MWE.

[oalbiez]

\documentclass[12pt,mode=fancy,cite=authoryear,titlestyle=display]{elegantbook}
\usepackage[utf8]{inputenc}
\usepackage[french]{babel}

% == Translation in french
\renewcommand{\chaptername}{Chapitre \thechapter}

\begin{document}
\maketitle
\chapter{Test}
\end{document}

If you comment the line \usepackage[french]{babel} the translation is correct with the chapter number. With babel, the chapter number is missing.

[sikouhjw]

I can't solve this problem in my ability, sorry.

[EthanDeng]

The missing number is known problem in version 3, I have fix it in version 4, later in this year, version 4 will be released.

This problem is caused by different logic when dealing with the chapter counter and chapter name for different languages.

[gcorrad]

Yes I deal with the same problem in spanish, it's because babel use {lang}chaptername instead of \chaptername.
In spanish i use \spanishcheptername... why you dont try with \frenchchaptername... anyway I tried it with the Italian in the same way without success.

\renewcommand{\spanishchaptername}{Capítulo \thechapter}

[jbwoods]

Seeing the update from 17 september 2020, I presume this has been fixed in 4.0?
Recently I used in Overleaf the Elegant book template and ran into this problem.
Can this template be updated?
Thanks.

[EthanDeng]

Seeing the update from 17 september 2020, I presume this has been fixed in 4.0? Recently I used in Overleaf the Elegant book template and ran into this problem. Can this template be updated? Thanks.

The overleaf version is older version (3.x), I didn't upload the latest version to overleaft, you can check the lastest version on your local machine, I will upload 4.x to overleaft later.