Thanks for testing! ";" is delimiter for function arguments in czech version of Excel (because "," is decimal delimiter). Parser tries to guess if you're using

Thanks for testing! ";" is delimiter for function arguments in czech version of Excel (because "," is decimal delimiter). Parser tries to guess if you're using czech or english version and it probably guessed wrong. Anyway, I wrote the parser by hand so I cannot guarantee it will work on every valid Excel formula. But I'm working on improved version which will use formal grammar.