`serve` read a whole line before checking it against `MAX_LINE`, so a client sending a
newline-free payload grew the buffer without limit. The line is now read through `take`, as the
control server does; the rest of an over-long line is read and dropped, the client gets the
"message too large" error, and the next message is served (stdio has one client, so the stream
stays open rather than closing as the control server's connections do).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The default still reads a string with typed input, which is en-US: "05.04.2026"
from a dd.mm.yyyy export became 4 May, "2.500" became 2.5, and the command said
nothing (#2255). `parse: false` (PR #2267) lets a caller keep the text, but a
script that does not pass it still cannot notice the change.
The result now names them: `converted` lists the strings typed input read as a
number (dates and times included), a boolean or an error, with the cell, the
input and what the cell shows, and `convertedCount` is the total. It is capped
at 20 entries and 32 characters per string, so a big write does not put a second
copy of its data in the result. A string written as a formula (`=1+1`) and a
leading apostrophe are not conversions. `cells` and the default reading of the
values are unchanged.
Two `parse: false` fixes from the review of #2267:
- An empty string clears the cell, as `null` and the default path do. Storing an
empty text cell left a cell that is not blank: `values: [["", ""]]` gave
COUNTA 2 and ISBLANK FALSE.
- MCP `write_range` takes `parse`, so an agent can opt out too; the tool's
description and docs/mcp.md say so.
Tests: the issue's examples under both settings, the report and its cap, the
empty string, and an XLSX save/reopen that keeps the text as text and the
default's date as a date.
Session keeps a window list (stable ids, per-window selection, active sheet
and per-sheet selections swapped into the workbook without dirtying it)
in place of the index-based hidden list and the copying New Window.
Titles read Name:1 / Name:2 for a workbook with several windows.
File > Close closes one window of several; window.close, window.list and
window ids for window.activate, view.switchWindows, view.hideWindow and
view.unhideWindow. Control channel and MCP tools take window/doc ids;
scroll positions and cell drafts belong to their window.
`formulas.evaluate` (behind `gridcraft-cli eval` and MCP's `evaluate_formula`) turned any
formula that didn't parse into #NAME?, so `=SUM(1;2)` looked like an unknown function. It now
parses the way `cell.set` does (missing closing parentheses are added) and returns the same
errors: "There's a problem with this formula: expected `,` or `)`, found Semicolon", or the
wrong-argument-count message. An unknown function still evaluates to #NAME?, as in Excel.
view.freezePanes, home.rowHeight, home.columnWidth, the AutoFit, Hide and
Unhide row/column commands and home.defaultWidth always changed the active
sheet: a `sheet` parameter was silently ignored, so a programmatic caller
laying out a sheet that isn't active changed the wrong one, and `Sheet!`
prefixes on `rows`/`cols` were refused as "not a range".
They now take `sheet` (name or index) like the commands that already use
target_sheet, accept a `Sheet!` prefix on `rows`/`cols` (and on Freeze
Panes' `cell`, which was refused), and refuse a prefix that contradicts
`sheet`. The selection belongs to the active sheet, so another sheet needs
explicit lines or a cell. Freeze Top Row, Freeze First Column and Unfreeze
Panes take `sheet` too. Without `sheet`, nothing changes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
`input` is documented as "text, number or =formula", but only a string
was read; a JSON number was dropped and the command failed (or, on 0.5.0,
silently cleared the cell). The undocumented `value` alias already went
through `json_to_input`. Both keys now share that converter, so numbers
and booleans are entered as typed. The MCP `set_cell` schema types
`input` as string, number or boolean to match its description.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Clean-room import of Excel 97-2003 workbooks from the public [MS-CFB] and
[MS-XLS] specifications: compound-file streams (FAT, mini FAT, directory
tree), the BIFF8 Workbook stream with Continue records, shared strings,
all cell records, formulas decoded from Ptg tokens (shared and array
formulas, 3-D refs, names, add-in/newer functions by name) with cached
results, number formats, the 1904 date system, merges, column widths, row
heights, defined names and print areas/titles. Encrypted (FILEPASS) and
BIFF5 files are refused with a clear message; everything else is skipped
with a warning. .xls opens as a new unsaved workbook (Save As .xlsx).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
cell_param returned None for any cell argument it could not parse, so every
command that falls back to the selection (cell.set, view.freezePanes,
formulas.trace*, insert.* and others) silently used the active cell instead:
set_cell with cell "ZZZZ0" wrote A1 and reported success. It also dropped a
sheet prefix, so "Other!B2" was applied to the active sheet.
cell_param now returns Result<Option<CellRef>>. An absent or null value is still
None, so the selection fallback is unchanged; an unparsable or non-string value
is an error; a sheet prefix naming a sheet other than the one the command works
on is an error.
cell_param_on is for the commands that resolve their own sheet (cell.get, links,
comments, notes, checkboxes, chart placement, paste): they accept a prefix naming
that sheet. cell.set resolves its own target sheet and still writes to another
existing sheet.
cell.set treated a missing input as an empty string, so a call that forgot the
input (or sent it under the wrong key) cleared the cell and reported success.
It now returns an error when neither `input` nor `value` is given. An explicit
empty string still clears the cell.
Resolves the shared integration points for both formats: combined sniff,
file.open spec, file filters, MCP description, docs. open_bytes now lets
sniffed content (ODS or XLSB) win over the extension.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- ui-egui: title bar with QAT, full ribbon (Home/Insert/Draw/Page Layout/Formulas/Data/
Review/View/Automate + Table/Chart Design), formula bar with Name Box, virtualised grid
(frozen panes, overflow, borders, CF data bars/scales/icons, tables, sparklines, filter
buttons, charts/pictures/shapes), in-cell editor with point mode, reference colouring,
autocomplete and argument hints, sheet tabs, status bar, dialogs, control channel
- apps/sheetcraft: desktop app (control server, file dialogs, prefs, drag & drop)
- chart: toolkit-free chart layout/rendering for 25 chart kinds + sparklines + rasteriser
- mcp + sheetcraft-cli: MCP server (headless or bridged) and CLI (info/convert/eval/cat/run/mcp)
- xtask (ci/layers/assets/wasm/version/parity), release workflows, packaging, placeholder icon
- automatic row heights
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
nihilist-narwhalandClaude Opus 5.5
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