Automatic partial toc at every chapter using titletoc

Question

This great answer Minitoc and memoir describes know how to put a chapter toc at the beginning of every chapter with the package titletoc using

\startcontents[chapters]
\printcontents[chapters]{}{1}{}

I am looking for a way to automate this for every non-starred chapter in scrbook (in the sense that one does not have to type the two lines after every \chapter command), probably modifying the chapter definition slightly.

Answer 1

This should do it (now tested).

\usepackage{xparse}
\let\originalchapter\chapter
\RenewDocumentCommand{\chapter}{som}{%
  \IfBooleanTF{#1}
    {\originalchapter*{#3}}
    {\IfNoValueTF{#2}
      {\originalchapter{#3}}
      {\originalchapter[#2]{#3}}%
    }%
\startcontents[chapters]
\printcontents[chapters]{}{1}{}
}