`write_full` can't know the output size in advance, so its buffer grows by
doubling and the result kept up to as much again unused: 28 % for a 100 MB
save, 99 % for a 5 MB one. The result is often kept for as long as a document
is open. It becomes the working bytes after edits that need a full rewrite
(repaired files, security changes, redaction) through `write_incremental`, and
it backs Save As ▸ optimized and every new document from Create, Combine,
Extract and Split.
`shrink_to_fit` at the end drops the unused capacity. The bytes are the same.
On macOS the shrink happens in place (2 µs for 100 MB, the buffer doesn't
move), and full-save times are unchanged.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
`write_incremental` copied the original into a buffer with 4 KB to spare,
then appended the revision. A revision above 4 KB (rotating a few dozen pages,
an image, a long comment thread) outgrew it. The buffer was then reallocated
at twice the size: the whole original was copied a second time, and the
result kept up to the original's size again unused. The engine keeps that
result as the document's working bytes, shared with the renderer and handed
to Save, so the unused half stayed alive. A 100 MB document held a 200 MB
allocation after one such edit, and still did after saving.
The revision is now written on its own, with offsets counted from where it
will start. The result is allocated once at exactly the original's size plus
the revision's, and filled in one pass. The output is byte for byte what it
was before.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
The app, crates, binaries, bundle id, packaging, icons, screenshots and docs are now
PdfCraft / pdfcraft (repo storytold/pdfcraft). On first launch the desktop app moves the
PrintCraft settings and crash-recovery folders to the new name, and both apps read settings
saved under the old storage key, so upgrades keep recent files, preferences and unsaved work.
The signing test fixtures keep their PrintCraft subject names (they are binary).
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
