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-rw-r--r--Lib/email/header.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/email/header.py b/Lib/email/header.py
index 8c32514..2562b30 100644
--- a/Lib/email/header.py
+++ b/Lib/email/header.py
@@ -66,9 +66,15 @@ def decode_header(header):
otherwise a lower-case string containing the name of the character set
specified in the encoded string.
+ header may be a string that may or may not contain RFC2047 encoded words,
+ or it may be a Header object.
+
An email.errors.HeaderParseError may be raised when certain decoding error
occurs (e.g. a base64 decoding exception).
"""
+ # If it is a Header object, we can just return the chunks.
+ if hasattr(header, '_chunks'):
+ return list(header._chunks)
# If no encoding, just return the header with no charset.
if not ecre.search(header):
return [(header, None)]