DETECTLANGUAGE

NOT DETERMINISTICALLY ASSERTABLE, and deliberately recorded as a probe rather than a support claim -- the same treatment batch B gave COPILOT and the CUBE* family. Microsoft's page opens with "This function is a service backed function. The supported languages and results may vary as languages are added or removed", and documents the function as calling Microsoft Translation Services over the network; its listed failure modes ("Text Too Long", "Request Throttled -- You have exceeded your daily quota of the translation function") are properties of that service, not of a spreadsheet engine. No offline engine can reproduce the documented answer "es", and an engine that DID return "es" from a local language-guess table would not thereby be compatible with the documented service. What the run does establish is recorded separately: probing all four pinned LibreOffice builds (24.2.0.3, 24.8.7.2, 25.2.0.3, 25.8.7.3) with the plain name, the _xlfn. storage form and the COM.MICROSOFT. add-in form returned #NAME? for all three spellings on every build, which is the signature of a name the engine does not implement at all.

NOT DETERMINISTICALLY ASSERTABLE, and deliberately recorded as a probe rather than a support claim -- the same treatment batch B gave COPILOT and the CUBE* family. Microsoft's page opens with "This function is a service backed function. The supported languages and results may vary as languages are added or removed", and documents the function as calling Microsoft Translation Services over the network; its listed failure modes ("Text Too Long", "Request Throttled -- You have exceeded your daily quota of the translation function") are properties of that service, not of a spreadsheet engine. No offline engine can reproduce the documented answer "es", and an engine that DID return "es" from a local language-guess table would not thereby be compatible with the documented service. What the run does establish is recorded separately: probing all four pinned LibreOffice builds (24.2.0.3, 24.8.7.2, 25.2.0.3, 25.8.7.3) with the plain name, the _xlfn. storage form and the COM.MICROSOFT. add-in form returned #NAME? for all three spellings on every build, which is the signature of a name the engine does not implement at all.

NOT DETERMINISTICALLY ASSERTABLE, and deliberately recorded as a probe rather than a support claim -- the same treatment batch B gave COPILOT and the CUBE* family. Microsoft's page opens with "This function is a service backed function. The supported languages and results may vary as languages are added or removed", and documents the function as calling Microsoft Translation Services over the network; its listed failure modes ("Text Too Long", "Request Throttled -- You have exceeded your daily quota of the translation function") are properties of that service, not of a spreadsheet engine. No offline engine can reproduce the documented answer "es", and an engine that DID return "es" from a local language-guess table would not thereby be compatible with the documented service. What the run does establish is recorded separately: probing all four pinned LibreOffice builds (24.2.0.3, 24.8.7.2, 25.2.0.3, 25.8.7.3) with the plain name, the _xlfn. storage form and the COM.MICROSOFT. add-in form returned #NAME? for all three spellings on every build, which is the signature of a name the engine does not implement at all.