Roundup Robot added the comment:
New changeset 1dcb9d0d53a6 by R David Murray in branch '3.3':
#16983: Apply postel's law to encoded words inside quoted strings.
http://hg.python.org/cpython/rev/1dcb9d0d53a6
New changeset 5f7e626730df by R David Murray in branch 'default':
Merge: #16983: Apply
R. David Murray added the comment:
The old header parsing code already decodes these, although it gets the spacing
wrong if you do the standard str(make_header(decode_header(x))) dance. The fix
for the new header parsing code only handles the specific case of only encoded
words surrounded by
New submission from R. David Murray:
It has come to my attention that at least some mail agents apply postel's law
to addresses like the following:
From: =?utf-8?Q?not_really_valid?= f...@example.com
Since encountering something that looks like an encoded word but that is not is
a very
