add: dc=test
test: You should see the Greek word 'kosme':       "κόσμε"
test: 2.1.2  2 bytes (U-00000080):        "€"
test: 2.1.3  3 bytes (U-00000800):        "ࠀ"
test: 2.1.4  4 bytes (U-00010000):        "𐀀"
test: 2.1.5  5 bytes (U-00200000):        "�����"
test: 2.1.6  6 bytes (U-04000000):        "������"
test: 2.2.1  1 byte  (U-0000007F):        ""
test: 2.2.2  2 bytes (U-000007FF):        "߿"
test: 2.2.3  3 bytes (U-0000FFFF):        "￿"
test: 2.2.4  4 bytes (U-001FFFFF):        "����"
test: 2.2.5  5 bytes (U-03FFFFFF):        "�����"
test: 2.2.6  6 bytes (U-7FFFFFFF):        "������"
test: 2.3.1  U-0000D7FF = ed 9f bf = "퟿"
test: 2.3.2  U-0000E000 = ee 80 80 = ""
test: 2.3.3  U-0000FFFD = ef bf bd = "�"
test: 2.3.4  U-0010FFFF = f4 8f bf bf = "􏿿"
test: 2.3.5  U-00110000 = f4 90 80 80 = "����"