Nathan Herring added the comment:
You are certainly correct about (some, perhaps many) e-mail generators using
tabs when folding, which is AFAICT, much more likely an incorrect
implementation of RFC 2822 rather than an intentional transformation of the
user's specified Subject line.
New submission from Nathan Herring:
We have some code that generates objects that inherit from Mapping that are not
nearly as straightforward to instantiate in a test. It's much easier to have
something like the follows:
foo = … # some collections.Mapping subtype
self.assertEqual(
Nathan Herring added the comment:
FWIW, it's also pretty easy to write
self.assertEqual({'key': 'value'}, dict(foo))
and get the right behavior, but it'd be nice if it was done automagically by
type checking.
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