Bryan MarkandClaude Opus 5.5 a09d3f6934 Memory: undo steps share picture and macro bytes instead of copying them ...

Every edit copies the workbook for its undo step (copy-on-write: sheets
and 64-row bands of cells are shared). A floating picture's bytes
(Image.data) and the VBA project (Workbook.vba_project) were plain
Vec<u8>, so each edit on a sheet with a picture, and every edit in a
workbook with macros, kept another full copy of them, up to the 100
steps of the history. They are Arc<Vec<u8>> now, as cell pictures
already are, with base64 helpers for serde (b64::shared, b64::opt). JSON
and XLSX are unchanged.

Measured on macOS 27 (Apple M3 Max), gridcraft-cli, kernel peak
footprint: a 19 MB picture and 50 cell edits on its sheet, 992 -> 22 MB;
10 edits, 215 -> 21 MB.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-16 14:26:53 +09:00

..

examples

Review fix-up: uniform, plot-clamped spline smoothing

2026-10-10 12:21:35 -04:00

src

Memory: undo steps share picture and macro bytes instead of copying them

2026-10-16 14:26:53 +09:00

tests

fix(edit): recalculate every cell changed by large clears (#1032) (#1128)

2026-10-15 13:38:13 -06:00

Cargo.toml

Engine: file.open decrypts password-protected workbooks (#11)

2026-10-11 23:29:28 +02:00