From f6713e84afc5addcfa8477dbdf2c027787f711c0 Mon Sep 17 00:00:00 2001
From: websurfer5 <49998481+websurfer5@users.noreply.github.com>
Date: Thu, 6 Jun 2019 12:53:27 -0700
Subject: bpo-36520: Email header folded incorrectly (#13608)
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* bpo-36520: reset the encoded word offset when starting a new
line during an email header folding operation

* 📜🤖 Added by blurb_it.

* bpo-36520: add an additional test case, and provide descriptive
comments for the test_folding_with_utf8_encoding_* tests

* bpo-36520: fix whitespace issue

* bpo-36520: changes per reviewer request -- remove extraneous
backslashes; add whitespace between terminating quotes and
line-continuation backslashes; use "bpo-" instead of
"issue #" in comments
---
 Lib/email/_header_value_parser.py | 1 +
 1 file changed, 1 insertion(+)

(limited to 'Lib/email/_header_value_parser.py')

diff --git a/Lib/email/_header_value_parser.py b/Lib/email/_header_value_parser.py
index 35d746aa508..bb5ff8dc7e8 100644
--- a/Lib/email/_header_value_parser.py
+++ b/Lib/email/_header_value_parser.py
@@ -2789,6 +2789,7 @@ def _refold_parse_tree(parse_tree, *, policy):
             newline = _steal_trailing_WSP_if_exists(lines)
             if newline or part.startswith_fws():
                 lines.append(newline + tstr)
+                last_ew = None
                 continue
         if not hasattr(part, 'encode'):
             # It's not a terminal, try folding the subparts.
-- 
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