You're making the claim, so it's your job to prove it, not ask some AI and get your opponent to do the legwork. Moreover I skimmed ECMA-376[1] and it doesn't me

You're making the claim, so it's your job to prove it, not ask some AI and get your opponent to do the legwork. Moreover I skimmed ECMA-376[1] and it doesn't mention anything about locale-invariant encoding for function names. The only mention was for the CELL function, which could accept multiple values depending on locale. [1] https://github.com/QtExcel/ecma-376-5th/blob/master/ECMA-376/Ecma%20Office%20Open%20XML%20Part%201%20-%20Fundamentals%20And%20Markup%20Language%20Reference.pdf https://github.com/QtExcel/ecma-376-5th/blob/master/ECMA-376...