\version "2.19.13"

\include "my-toc-init.ly"

\book {
  
 \markuplist \override #'(name . book-1) \table-of-contents
 
  \score {
    \tocItem #'book-1 \markup test1.1
    \layout {}
  }
  \score {
    \tocItem #'book-1 \markup test1.2
    \layout {}
  }
  \score {
    \tocItem #'book-1 \markup test1.3
    \layout {}
  }
}


\book {
  
 \markuplist \override #'(name . book-2) \table-of-contents
 
  \score {
    \tocItem #'book-2 \markup test2.1
    \layout {}
  }
  \score {
    \tocItem #'book-2 \markup test2.2
    \layout {}
  }
  \score {
    \tocItem #'book-2 \markup test2.3
    \layout {}
  }
}

\book {
  
 \markuplist \table-of-contents
 
  \score {
    \tocItem \markup test3.1
    \layout {}
  }
  \score {
    \tocItem \markup test3.2
    \layout {}
  }
  \score {
    \tocItem \markup test3.3
    \layout {}
  }
}