Problems with Formencode Msgs, Unexpected Inputs

Hi,

I'm trying to get formencode to work, and I have a few problems:

1. How do you supply custom error messages? I've read the documentation, and
couldn't find a concrete example using preexisting validators.
2. Why am i getting this error list with the included test file?

List of dictionaries:
[{'name': 'Tom'}, {'email': 'tom-1ejvVKqOCHmevrI51Aqiyd1ocvOgFGy0LpsAlfeDtJ10ubjbjo6WXg@public.gmane.org'},
{'password': 'narfffff0'}, {'password_confirm': 'narfffff0'}]

Error list:
[Invalid('email: Missing value\npassword: Missing value\npassword_confirm:
Missing value',), Invalid('name: Missing value\npassword: Missing
value\npassword_confirm: Missing value',), Invalid('email: Missing
value\nname: Missing value\npassword_confirm: Missing value',),
Invalid('email: Missing value\nname: Missing value\npassword: Missing
value',)]

3. If I supply a value to the list of dictionaries that is not expected by
the Schema (e.g. "foobar"), how do I get the Schema to ignore it instead of
throwing an Invalid(u"The input field '%s' was not expected.",) ?

Thanks!
nym

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