Directory servers may be configured to return a default set of
attributes for each record matching a query if the query specifies none.
The variable eudc-default-return-attributes controls the return
attributes you want to see, if different from the server defaults.
A list of the default attributes to extract from directory entries. If
set to the symbol all then all available attributes are
returned. A value of nil, the default, means to return the
default attributes as configured in the server.
The server may return several matching records to a query. Some of the records may however not contain all the attributes you requested. You can discard those records.
If non-nil, entries that do not contain all the requested return
attributes are ignored. Default is t.