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Hamza
d890a1a7da
`C1#` gave `#REF!` while the dynamic-array formula in C1 happened to return a
single value -- a FILTER matching one row, a SORT or UNIQUE over one item -- so
`ROWS(C1#)` and `SUM(C1#)` failed and `COUNT(C1#)` gave 0. Every formula that
counts or sums a filtered list therefore broke the moment the list had exactly
one entry. In Excel the formula is the anchor of a 1 x 1 range and the three
give 1, the value, and 1.
A pass recorded the spill only for an array larger than one cell:
if a.rows > 1 || a.cols > 1 {
self.spills.insert(k, a.clone());
}
so a 1 x 1 result left no range for `spill_range` to answer with, and `eval`
turned the missing range into `#REF!`. It is recorded unconditionally now.
The report suggested keying this on the cell carrying `cm`, which turned out not
to be expressible: nothing in the model says "dynamic array" positively -- the
reader tells one from a legacy CSE formula only by leaving `Formula::array`
unset. The arm itself is the better test, because a formula whose result is a
scalar never reaches it: `=1+1` does not become an anchor, which a test pins.
It also matches Excel 365, where `=A1:A1` is a 1 x 1 anchor of its own.