Header and footer go first, each with its own ops, and a variant flag is
flipped while a zone is open. The round trip compares a list's drawn kind and
marker rather than its node type and style name — a list that loses its name to
a formatted marker carries the style's own char — and skips the marks of an
inline atom, which no file keeps. A caret is snapped to a text position, a
swallowed File-menu click is retried, and WebKit's converging ResizeObserver
round is no page error. A new corpus pair brings all six zones through the
import path; the baseline holds it and a re-recorded showcase entry.
15-chapters carries what only a stylesheet holds: numbering on the heading
styles and two heading styles of the document's own. The round-trip legs now
carry that stylesheet too — a style the file names but the built-ins never
heard of can only be written from there — and one absolute assertion says the
chapters read as headings, which a round trip cannot: both its sides go
through the same importer, so a consistent misreading compares equal.
A numbered heading style rides the package's factory slot; a second definition
under the same id leaves two, and LibreOffice reads the first.
corpus/word/ holds each document saved again by Word — rsids,
proofErr, separator notes, theme docDefaults — asserted to read like
the docx-lib original and survive our round trip. The formula fixture
is reauthored: a hand-wrapped MathNumerator doubled m:num/m:den, which
Word refuses to open, and the radical gets a visible degree.
Four new themed documents (11–14), authored by the docx lib with
LibreOffice ODT twins like the rest; make-fixtures takes a regex to
regenerate a subset without rewriting the committed files. The twins
need libreoffice-math — without it soffice drops every formula
silently.
Ten documents the docx lib authors directly, plus the ODT twin
LibreOffice converts each into, now live in tests/corpus/ instead of the
gitignored fixtures dir. corpus.test.ts asserts both formats of a
document read the same and that each survives our export and import
either way. The heading styles gained the outline level Word writes —
without it LibreOffice converts a heading to a paragraph that merely
carries the style, and the two formats disagreed.
Steffen Becker