"abc".len() //-->3
"\ufeff\u00A2 \u20ac".len() //-->9
Data(0,Int,"\ufeff\u00A2 \u20ac") //-->Data(9) (bytes)
"J\u0332o\u0332s\u0332e\u0301\u0332".len()  //-->14
"\U1D518;\U1D52B;\U1D526;\U1D520;\U1D52C;\U1D521;\U1D522;".len() //-->28