Because user-get is supposed to handle fetching a user by id or by name the first thing it tries to do is fetch a user by ID. When this name is UTF-8 this fails because there is no support for fetching objects by id with utf-8 (because there will never be a utf-8 id number).
The client needs to compensate for this by first percent encoding the name before it attempts to do a get by id.
keystone user-get ñew
-Red Hat Enterprise Linux OpenStack Platform 7.
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