The suite could read a cataloguing block and could ask a register, and
nothing showed the two together — which is the only way either is worth
acting on. A title page alone gives up a running head when the scan
starts late; an ISBN alone returns a confidently wrong book when the
catalogue has been carrying the wrong one for years.
The example's title comparison folds to letters and digits rather than
comparing strings. A register and a title page differ over case, over a
curly apostrophe against a straight one, and over whether the subtitle
counts as part of the title. An example that called those disagreements
would teach the wrong lesson, and did until it was fixed.
It runs on this library and finds both of the cases worth finding: a file
called Document5 by -ducati996 that both sources agree is Russell's
Problems of Philosophy, and a Pelikan whose stored ISBN belongs to a book
about sculpture.
Two things between a converted EPUB and its chapter titles.
The heading level taken as the chapter map was the shallowest present. Pandoc
writes the book's title as the only `#` and every real chapter as a `##`, so
the shallowest level had one heading in it and the whole book came back as a
single chapter. The dividing level is now the shallowest one used more than
once — a level used once is a title.
And an empty bracketed span survived the heading cleaner, because the pattern
wanted at least one character between the brackets. Pandoc writes an anchor
as exactly that: `## []{#link2H_INTR} Introduction`.
Gibbon's first volume, converted from the Project Gutenberg EPUB: 2 distinct
chapter titles before, 61 after, and none of them carrying an element id.
The harness compared these tools against the code they replaced — Python
imported from book-pipeline, podcast-pipeline and knowledge-mcp, and
JavaScript copied out of the podcast media server and indexer, each pinned to
a commit. All of it has since been deleted, so the live half cannot run and
the golden half pins answers against a source nobody can consult.
What was worth keeping was never the comparison. `KNOWN.md` argued, at
length, why a dozen of these tools deliberately do something a reader would
not expect: why pdfgutter measures the crop box throughout, why avplan finds
the encoder rather than reading one out of the environment, why mdscrub will
not manufacture a page boundary. Those arguments are about this code and
stand on their own, so they are now `docs/decisions.md`, rewritten to say
what each tool does and why rather than what it does differently.
Binding coverage is unaffected: the bindings carry 24 tests of their own, a
node smoke test against the built package, and a typecheck.
The README now lists the forms it handles with an example of each, says that
where the italics sit is what decides whether they are the title or the
journal, and sets out what it refuses and why — scripture, Migne, a
contributor's biography, a note that only thanks people, a page footer.
Recipes gains "What a book leans on": one bibliography read, then the same
over a shelf, counted per citing book so a work cited forty times in one
bibliography still counts once. Every command was run — thirty converted
books gave 14,481 references, 10,536 naming a work, in about a second.
`records.md` now points at the five tools whose record shapes live in their
own pages rather than in `corpus-core`.
And pandoc escapes an underscore, so the rule of them that stands in for a
repeated author arrives as `\_\_\_\_\_` and was not being recognised.
funkpower