I know that titlesec is not fully compatible with memoir document class and generally it is not a good idea to combine them.
However, I'm just curious, if it possible to work around my problem.
MWE:
\documentclass{memoir}
\usepackage{titlesec}
\titleformat{\part}[display]{}
{\filcenter \Huge Part {\thepart}:}
{20pt}{\Huge\bfseries\filcenter}
\titleformat{\chapter}[display]{}
{\filcenter \Huge Chapter {\thechapter}:}
{20pt}{\Huge\bfseries\filcenter}
\renewcommand\cftpartname{Part~}
\renewcommand\cftchaptername{Chapter~}
\begin{document}
\tableofcontents
\part{Abcdefghij}
\chapter{chapter title}
\part{Abcdefghij}
\end{document}
If you compile this, commands which are related to chapters, sections, subsections like \renewcommand\cftchaptername{Chapter~} work fine, i.e. they set corresponding options inside ToC.
However any setting (e.g. \renewcommand\cftpartname{Part~}) related to \part don't work at all.
Is it possible to "bypass" these settings to part?
I'm also interest in adding \Romanbar{\thepart} from package romanbar in part numbers (especially in ToC).
Thanks in advance!
memoirandtitlesecare not really compatible. Use one of them, but not both. – Dec 27 '18 at 21:40