A long table lay straight across the gap between two sheets with a row
cut in half, and a shorter one jumped to the next sheet whole leaving
the rest of the first blank. Tables are broken between their rows now,
which is where a table breaks on paper. The spacer there is a tr with
one borderless cell: a div inside a tbody is not something the browser
keeps. Its own spacer rows are subtracted again on the next measurement
and counted into the shift every block below inherits — miss that and
everything under a broken table is measured a page too high.
A dialog closed in the middle of an edit if a selection was dragged past
its edge: the click lands on the nearest common ancestor of press and
release, which is the backdrop, and every dialog read that as "clicked
beside me". They remember where the press began now. All ten.
A note and a chapter can wear a mark of their own beside the name,
chosen from a short list searched by what a thing is for rather than
from the system emoji keyboard — a different thing on every machine, and
three thousand pictures for a decision that is "which of these is the
invoice notebook". A separator takes its own colour and one of five
shapes, and a chapter can be divided like the notebook it sits in: both
places a chapter is shown draw it with one component now, so it cannot
be divisible in the column and not in the unfolded block.
Also: a chapter's colour could not be cleared, because the update rode
on COALESCE and null there means "leave it alone". A table's header row
is legible on the dark theme. Three entries in the table's own menu were
still German. Opening a notebook opens its first note, on a wide screen
only — on a phone the list is the screen.
Fourteen suites green: 364 browser checks, 241 unit tests.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The writing surface was a column of text in an empty pane. A sheet was
drawn behind it, but only once you started drawing — so writing looked
like text floating in the middle of nothing, and the space either side of
the column read as a void rather than as a margin.
Now every page is a sheet of its own, centred, with a gap after it: the
same way the PDF reader draws its pages, because a page in a note and a
page in a document should read as the same kind of thing.
The gap is the part that takes work. The browser knows nothing about the
sheets and lays the text out as one flow, putting a line straight across
the gap and cutting it in half. So editor/pagination.js measures the flow
and pushes any block that would straddle a gap onto the next page, with a
spacer of exactly the right height in front of it. A paragraph moves down
entire, which is what a page break means on paper. A block taller than a
page is left to run over, since splitting one would mean laying out its
insides ourselves.
The spacers are decorations, not content: they never enter the document,
never reach the server and never appear in an export. Two checks hold
that down — one asks whether any block sits in a gap, the other reads the
stored body back and looks for them there.
Two things that are easy to get wrong. The spacer's height is not the
distance the text moves: margins that used to collapse into each other no
longer do with something between them, so the layout gains that much for
free and the spacer is made exactly that much shorter. And heights change
with no transaction to announce it — a webfont landing, an image
arriving, the window resizing — which a ResizeObserver on the editor
element catches.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
