Every source record scanned the filter's whole selection, so a large
selection multiplied by many records was slow even when nothing passed.
Each filter's labels are lowercased into a set once per computation.
Addresses CodeRabbit review on #3219, "Recognize the legacy Count
Numbers caption when the function changes": workbooks saved before
Count Numbers was captioned "Count of" carry "Count Numbers of Val"
(optionally with a number suffix). pivot.valueSettings now treats that
as an automatic caption of a Count Numbers field, so changing the
function renames it; a custom name stays.
Test: legacy_count_numbers_caption_follows_the_function.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Show Values As › Rank Largest to Smallest counted every larger sibling,
so ties skipped ranks: 5, 4, 3, 3, 4 ranked 1, 2, 4, 4, 2 where Excel
gives 1, 2, 3, 3, 2. It now counts the distinct larger values.
A new Count Numbers value field was captioned "Count Numbers of Units";
Excel captions it "Count of Units", as GridCraft's XLSX reader already
names a value field saved without a name.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Dylan M. Taylor