Titletoc and Titlesec in just some chapters

Question

I have a twocolumn document and I should insert the minitoc in the first chapters with titlesec and titletoc. I read the answer to Customize minitoc; however, if I change the \titleformat before appendices, all the sections of the appendix chapters will appear within the last minitoc:

\documentclass{book}
\usepackage{titlesec}
\usepackage{titletoc}

\newcommand\partialtocname{\contentsname}
% depending on this boolean, \chapter will create or not a partial ToC
\newif\ifchapterwithtoc
\chapterwithtocfalse

\titleformat{\chapter}[display]
  {\normalfont\huge\bfseries}{\chaptertitlename\ \thechapter}{20pt}{\Huge}
  [\ifchapterwithtoc
     \vspace*{2pc}\titlerule\vspace*{1pc}%
     \startcontents\vbox{\Large\partialtocname}\vskip1ex
     \printcontents{l}{1}{\setcounter{tocdepth}{1}}\vspace*{1pc}\titlerule%
   \else\fi%
  ]

\titlecontents*{lsection}[0pt]
{\small\normalfont}{\thecontentslabel\space}{}
{,~\itshape\thecontentspage}[\space\textbullet\space][.]
\titlecontents*{lsubsection}[0pt]{}{}{}{}

\begin{document}

\frontmatter
\chapter*{Acknowledgements}
\chapter*{Preface}
\tableofcontents

\mainmatter
\chapterwithtoctrue

\chapter{Chapter One}
\section{Section One One}
\section{Section One Two}
\section{Section One Three}

\chapter{Chapter Two}
\section{Section Two One}
\section{Section Two Two}

\appendix
\chapterwithtocfalse

\chapter{Appenix One}
\section{Section A One}
\section{Section A Two}
\chapter{Appenix Two}
\section{Section B One}
\section{Section B Two}

\end{document}

Any suggestion?

Answer 1

To copy here what I already answered you your crosspost Switching off titletoc for some chapters on LaTeX-Community.org - you could use \stopcontents at the beginning of the appendix to prevent that the appendix sections would appear in the last minitoc:

\appendix
\chapterwithtocfalse
\stopcontents

\startcontents already stops the previous partial content, however to finally stop you need an explicit \stopcontents here.