[Samba] samba-tool and --given-name or --surname format?

[Harald Hannelius]

How do I add a user with samba-tool that has the givenname "Åke" or surname 
"Åberg"?

# samba-tool user create foobar 21asdasd// --given-name="Åke"
ERROR(<type 'exceptions.UnicodeDecodeError'>): Failed to add user 'foobar': - 
'ascii' codec can't decode byte 0xc3 in position 8: ordinal not in range(128)
   File "/usr/lib/python2.7/dist-packages/samba/netcmd/user.py", line 425, in 
run
     smartcard_required=smartcard_required)
   File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 490, in newuser
     force_password_change_at_next_login_req)
   File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 606, in 
setpassword
     """ % (user_dn, base64.b64encode(pw).decode('utf-8'))

# samba-tool user create foobar 21asdasd// --given-name="$(echo "Åke"|openssl 
base64)"
ERROR(ldb): Failed to add user 'foobar':  - ldb_add: invalid dn '(null)'

What's the correct format of names?

-- 

Harald Hannelius | harald.hannelius/a\arcada.fi | +358 50 594 1020