#11584: make Header and make_header handle binary unknown-8bit input
Analogous to the decode_header fix, this fix makes Header.append and
make_header correctly handle the unknown-8bit charset introduced by email5.1,
when the input to them is binary strings. Previous to this fix the
make_header(decode_header(x)) == x invariant was broken in the face of the
unknown-8bit charset.
diff --git a/Misc/NEWS b/Misc/NEWS
index 9c3f693..0ec55b6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -26,7 +26,8 @@
-------
- Issue #11584: email.header.decode_header no longer fails if the header
- passed to it is a Header object.
+ passed to it is a Header object, and Header/make_header no longer fail
+ if given binary unknown-8bit input.
- Issue #11700: mailbox proxy object close methods can now be called multiple
times without error.