Bibliography and Alphabetical Index rendering in TOC

[petobens]

Consider the following MWE:

\documentclass{book}
\begin{document}
\frontmatter
  \tableofcontents
  \chapter{Preface}
\mainmatter
  \chapter{First chapter}
  \chapter{Second chapter}
  \chapter{Third chapter}
\backmatter
  \printbibliography
  \printindex
\end{document}

The \printbibliography and \printindex commands will respectively generate a bibliography and an alphabetical index that generally refers to the whole document and not just to the last chapter (Third Chapter in the example). However with the current TOC the "Bibliography" and "Alphabetical Index" are shown as a part or subset of the last chapter (and hence folded within it). I think they should be shown as independent entries (the same way that the "Preamble" and "Table of Contents" are shown)

[lervag]

I think my latest commits should fix this. Please test.

[petobens]

Thank you! Works great.

[lervag]

Great!