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-rw-r--r--Doc/library/email.message.rst18
1 files changed, 16 insertions, 2 deletions
diff --git a/Doc/library/email.message.rst b/Doc/library/email.message.rst
index fa1df88..6f40c05 100644
--- a/Doc/library/email.message.rst
+++ b/Doc/library/email.message.rst
@@ -266,7 +266,12 @@ Here are the methods of the :class:`Message` class:
taken as the parameter name, with underscores converted to dashes (since
dashes are illegal in Python identifiers). Normally, the parameter will
be added as ``key="value"`` unless the value is ``None``, in which case
- only the key will be added.
+ only the key will be added. If the value contains non-ASCII characters,
+ it must be specified as a three tuple in the format
+ ``(CHARSET, LANGUAGE, VALUE)``, where ``CHARSET`` is a string naming the
+ charset to be used to encode the value, ``LANGUAGE`` can usually be set
+ to ``None`` or the empty string (see :RFC:`2231` for other possibilities),
+ and ``VALUE`` is the string value containing non-ASCII code points.
Here's an example::
@@ -276,6 +281,15 @@ Here are the methods of the :class:`Message` class:
Content-Disposition: attachment; filename="bud.gif"
+ An example with with non-ASCII characters::
+
+ msg.add_header('Content-Disposition', 'attachment',
+ filename=('iso-8859-1', '', 'Fußballer.ppt'))
+
+ Which produces ::
+
+ Content-Disposition: attachment; filename*="iso-8859-1''Fu%DFballer.ppt"
+
.. method:: replace_header(_name, _value)
@@ -380,7 +394,7 @@ Here are the methods of the :class:`Message` class:
:rfc:`2231`, you can collapse the parameter value by calling
:func:`email.utils.collapse_rfc2231_value`, passing in the return value
from :meth:`get_param`. This will return a suitably decoded Unicode
- string whn the value is a tuple, or the original string unquoted if it
+ string when the value is a tuple, or the original string unquoted if it
isn't. For example::
rawparam = msg.get_param('foo')