Walter Woods <woodswal...@gmail.com> added the comment:
Relevant part from trunk/Lib/rfc822.py illustrating that returning default
unchanged is the legacy/defined behavior:
return self.dict.get(name.lower(), default)
See attached patch for py3k. This preserves backwards compatibility (aside
from the comma-joined list) and uses the default argument appropriately
(consistently with the default argument for dict.get, for instance).
On another note, should we be patching Python 2.7 as well, since RFC 2616
states that the 3.X behavior of a comma-joined list is appropriate (as cited
by Senthil)?
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Added file: http://bugs.python.org/file17222/issue8572-alt.diff
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