[Samba] samba-tool cannot add or remove group members

[Sébastien QUESSON]

> > > All I can think of is, you have a user with
> > > 'sAMAccountName=username' and another with 'CN=username', this
> > > could lead to 'len(targetmember)' being 2

yeah, that's the point
I created my users with : samba-tool user add user password --use-username-as-cn

> OK, I think I have a fix, find 'samdb.py' on your DC, open it in your
> favourite editor and find this line:
> You should then be able to add your user to the group:

samba-tool group addmembers is OK now!
do I have to maintain manually this file, or will it be ported in next samba versions?
thank you very much for your great support, Rowland!