(this is about zope.schema)

I assumed that the fields Bytes and ASCII have some distinction. The
ASCII field explicitly checks for every character to have an ordinal
value lower than 127.

Bytes however does a cast in fromUnicode(u) that does str(u). This will
break if there are non-ascii characters in the unicode string.
Effectively this makes it an ASCII field as well.

However, I don't know enough about the environment, so eventually this
is all good. When does the fromUnicode method get called? Everytime I
use this field through zope.app.form or zope.formlib?


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