[issue1467619] Header.decode_header eats up spaces

[Ralf Schlatterbeck]

Ralf Schlatterbeck <rsc at runtux.com> added the comment:

I've been bitten by this too (in python up to 2.7 in roundup the bug-tracker). We're currently using a workaround that re-inserts spaces, see git on roundup.sourceforge.net file mailgw.py method _decode_header_to_utf8

RFC2047 even has a test-case at the end, it specifies:

encoded form                                displayed as
(=?ISO-8859-1?Q?a?= b)                      (a b)

note the space between 'a' and 'b' above. Spaces between non-encoded and encoded parts should be preserved. And it's probably a good idea to put the examples from the RFC into the regression test.

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nosy: +runtux

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<http://bugs.python.org/issue1467619>
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