Merge & Center and Merge Cells kept only the upper-left value, but
Merge Across left the other values of each row in place, hidden under
the merge and still counted: with 1 2 / 3 4 in A1:B2, SUM(A1:B2) stayed
10 after Merge Across, where Excel gives 4. Each row's merged area now
keeps only its first value, as the other merges do.
home.manageRules took the number of rules once, before deleting, so
{"delete":0,"moveUp":1} with two rules swapped past the end of the
shortened list and panicked (index out of bounds; the session's guard
kept the workbook). The count is now taken after each step.
A growth series with a step below 1 stopped at once when given a stop
value, since the stop was only checked for rising series. It now bounds
the series in the direction it runs.
Following Excel's AutoFill series:
- a single time steps by an hour (9:00, 10:00, 11:00); it was copied.
- Qtr3 and Quarter3 wrap after 4 like Q3; they counted on to Qtr5.
- 1st Period continues as 2nd Period, 3rd Period; it gave 2st, 3st.
- a source without a common pattern (Product 1, On backorder) continues
each cell's own series; it was copied as is.
write_csv visited every position of the used range and appended to one growing
String with no limit, so two cells far apart (A1 and XFD1048576) asked for
about 16 GiB of commas. The output is now capped at 512 MiB: a lower bound
(delimiters and line ends of every row) is checked before anything is
allocated, and the text written so far is checked after each row. Over the
cap, write_csv returns IoError::TooLarge naming the rows, columns and limit,
and Save As / Export CSV and TSV report it without writing a file. Accepted
exports are unchanged. write_csv now returns a Result.
home.rowHeight, home.autofitRowHeight and data.ungroup change row hidden
state without marking the edit structural, so SUBTOTAL(101-111) kept a stale
value. Found by the command-sequence fuzz (seed 3).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
With values on rows and no column field, the header cell above the data
column reads "Total", as Excel saves it (tabular checked against a real
file).
Σ Values in Columns always comes after the last column field: the column
layout doesn't place it anywhere else, so `pivot.moveField` no longer
stores a position there, the reader ignores where `-2` sits in colFields
and the writer puts it last.
`pivot.changeSource` removes dropped row and column fields one by one so
Σ Values keeps its place ahead of the field it preceded.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon Thomas