Memoir TOC, Biblatex and \refsegment are not aligning the "References" as a subsection but a section instead

Question

Following on from my previous lab-book question about numbering appendices but not \mainmatter chapters in a memoir TOC, I do not know where to begin with modifying the references section (per section) on the TOC. An image is probably a better descriptor:

I am using the refsegment option of biblatex so that each "day" has its own independent reference section and then at the end, a complete bibliography. I am not sure why the "References" are aligning as if they are a section rather than subsection and I do not know whether this is a biblatex solution or memoir solution, hence the tags.

How can I align the "References" as if they were a subsection of the previous section rather then appearing to be sections, is this possible please?

I will admit I have tried little so my apologies for that, I do not know if it is a biblatex solution or memoir solution and I cannot profess great knowledge over either. I have a feeling it is due to the section+ option passed to biblatex but I could not be sure either way.

MWE:

\documentclass[11pt,oneside]{memoir}
\usepackage[backend=biber,style=numeric,refsegment=section+,]{biblatex}
\addbibresource{biblatex-examples.bib}
\setsecnumdepth{subparagraph}
\settocdepth{subparagraph}
\begin{document}
\frontmatter
\tableofcontents*
\mainmatter
\part{2022}
\chapter{August}
Text
\newpage
\section{\today}
Text \cite{sigfridsson}
\subsection{Testing}
Text
\subsection{Testing}
Text
\subsubsection{Test}
Text
\printbibliography[segment=\therefsegment, heading=subbibliography]
\newpage
\section{11/11/11}
Text
\subsection{Test}
Text
\subsubsection{Test}
\cite{murray}
\printbibliography[segment=\therefsegment, heading=subbibliography]
\backmatter
\printbibliography
\end{document}

I am compiling the MWE with:

% arara: lualatex: {options: [-halt-on-error]}
% arara: biber
% arara: lualatex: {options: [-halt-on-error]}
% arara: lualatex: {options: [-halt-on-error]}

Any help would be appreciated, I regret that I have not tried much with this but I genuinely do not know what to try or which to try first.

score 1 · Accepted Answer · answered Aug 15 '22 at 17:57

The highest "regular" sectioning level in memoir is \chapter. So that's what the standard bibliography heading uses. subbibliography is one level below that, so \section. If you want a \subsection-level heading, you have to define your own subsubbibliography heading.

\documentclass[11pt,oneside]{memoir}
\usepackage[backend=biber,style=numeric,refsegment=section+,]{biblatex}
\addbibresource{biblatex-examples.bib}
\defbibheading{subsubbibliography}[\refname]{%
  \subsection*{#1}%
  \ifmemoirbibintoc
    {\phantomsection
     \addcontentsline{toc}{subsection}{#1}}
    {}}
\setsecnumdepth{subparagraph}
\settocdepth{subparagraph}
\begin{document}
\frontmatter
\tableofcontents*
\mainmatter
\part{2022}
\chapter{August}
Text
\newpage
\section{\today}
Text \cite{sigfridsson}
\subsection{Testing}
Text
\subsection{Testing}
Text
\subsubsection{Test}
Text
\printbibliography[segment=\therefsegment, heading=subsubbibliography]
\newpage
\section{11/11/11}
Text
\subsection{Test}
Text
\subsubsection{Test}
\cite{murray}
\printbibliography[segment=\therefsegment, heading=subsubbibliography]
\backmatter
\printbibliography
\end{document}

The refsegment option has nothing to do with this.

Memoir TOC, Biblatex and \refsegment are not aligning the "References" as a subsection but a section instead

1 Answers1