Jay Anderson writes:
if you run 'lilypond toc_a.ly toc_b.ly' toc_b.pdf will end up with all
of the items from toc_a.ly in the table of contents (except with
question marks for the page number).
Thanks for the bug report, Jay.
I believe David Kastrup saw your report and has already started
File 'toc_a.ly'
==
\version 2.17.14
\markuplist \table-of-contents
\pageBreak
\tocItem A
\markup A
\pageBreak
\tocItem B
\markup B
\pageBreak
==
File 'toc_b.ly'
==
\version 2.17.14
\markuplist \table-of-contents
\pageBreak
\tocItem C
\markup C