To-do-notes in a separated TeX file

Question

Is it possible to compile a file with the extract package that just includes the \listoftodos (todonotes package) of another file?

Answer 1

You do not need to use the extract package for this. Provided you have compiled your main file main.tex with the todo notes in it, there will be an auxilliary file main.tdo containing the list of todo's. Now all you need in a second document is to include that file main.tdo. Here is a working set-up:

First: main.tex

\documentclass{article}

\usepackage{todonotes}

\begin{document}

Text.\todo{Something needs doing here.}

\listoftodos
\end{document}

Second: todolist.tex

\documentclass{article}

\usepackage{todonotes}

\begin{document}

\input{main.tdo}

\end{document}