# Enumerate list numbering to include chapter number

How does one include chapter number in the enumerate list number? For example if I have list in chapter 3, I would like to have the following list (independent of section in which it occurs). The numbering should continue across different enumerate lists in the same chapter.

Example:

Chapter 3
Section 1
Lorem ipsum dolor sit amet, consectetur adipiscing elit:
3.1 Pellentesque
3.2 a aliquam
3.3 Elis

Section 2
Lorem ipsum dolor sit amet, consectetur adipiscing elit:
3.4 Pellentesque
3.5 a aliquam
3.6 Elis

Chapter 4
Section 1
Lorem ipsum dolor sit amet, consectetur adipiscing elit:
4.1 Pellentesque
4.2 a aliquam

• what if you have two enumerate lists in chapter 3? Should both of them start with 3.1 ? – ebosi Jan 16 '17 at 10:44
• of yes, of course there should be continuation in list numbers across different enumerate lists in the same chapter. – Lanc Jan 16 '17 at 10:45

Using the enumitem and etoolbox package, the important parts are:

 % include the chapter number
\setlist[enumerate]{label=\thechapter.\arabic{*},resume}

% restart the enumerate list every chapter
\preto\chapter{%
\restartlist{enumerate}%
}


Here's a complete MWE:

% arara: pdflatex
\documentclass{report}

\usepackage{enumitem}
\usepackage{etoolbox}

% include the chapter number
\setlist[enumerate]{label=\thechapter.\arabic{*},resume}

% restart the enumerate list every chapter
\preto\chapter{%
\restartlist{enumerate}%
}

\begin{document}

\chapter{one}
\begin{enumerate}
\item \label{testref} first
\item second and cross reference: \ref{testref}
\end{enumerate}
more
\begin{enumerate}
\item third
\item fourth
\end{enumerate}

\chapter{two}
\begin{enumerate}
\item \label{secondref} first
\item second and cross reference: \ref{secondref}
\end{enumerate}
more
\begin{enumerate}
\item third
\item fourth
\end{enumerate}
\end{document}