A formula calling a Google-only function (GOOGLETRANSLATE, QUERY,
ARRAYFORMULA...) opened as #NAME? where the wrapper had shown the cached
value, as Excel does. The XLSX reader now unwraps a cell formula only when
every function inside is known: read_xlsx_with takes the predicate (the
xlsx crate can't depend on the function library) and the engine passes
gridcraft_calc::is_known_function. Unwrapping stays in the reader so shared
formulas are shifted from the unwrapped master.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
`save_fails_upfront_when_the_temp_name_is_taken` calls
`std::os::unix::fs::symlink` but was only gated on non-wasm, so the
engine crate's lib tests did not compile on Windows. Gate it `cfg(unix)`
like the neighbouring permissions test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
prxnvt