Option clash for package tkz-tab

Question

Here is the code:

\documentclass[11pt,a4paper]{article}
\usepackage{fontspec}
\usepackage[french]{babel}
\usepackage{tikz}
\usepackage{tkz-tab}
\usepackage[inline]{tkz-tab}

\begin{document}
test
\end{document}

and it returns the LateX error Option clash for package tkz-tab.

I do find it kind of weird to call twice tkz-tab.

My questions are (beyond the fact that I'd like to get rid of the error message) :

1. does the \usepackage[inline]{tkz-tab} command allows to get the same thing then the \usepackage{tkz-tab} and more with [inline] option, or less because of that option, or something different, hence the option clash ?
2. What's the use of that [inline] option ?

As you can tell I've been working with copy/paste and I'm trying to narrow it down, line after line.

Answer 1

inline is not a valid option for tkz-tab, if you try

\documentclass[11pt,a4paper]{article}
\usepackage[inline]{tkz-tab}
\begin{document}
test
\end{document}

you end up with

! LaTeX Error: Unknown option `inline' for package `tkz-tab'.

---

You get nothing extra from loading packages more than once.

An option clash error occurs when you try to load a package more than once, and the options passed to the package the second time are not a subset of the packages passed to it the first time.

In fact, because tkz-tab loads tikz as well, I think your example can be trimmed down to the following without losing anything.

\documentclass[11pt,a4paper]{article}
\usepackage{fontspec}
\usepackage[french]{babel}
\usepackage{tkz-tab}
\begin{document}
test
\end{document}