Serhiy Storchaka 8e97bd7ef4
[3.13] gh-130631: Make join_header_words() more similar to the original Perl version (GH-130632) (GH-132303)
* Always quote strings with non-ASCII characters.
* Allow some non-separator and non-control characters (like "." or "-")
  be unquoted.
* Always quote strings that end with "\n".
* Use the fullmatch() method for clarity and optimization.
(cherry picked from commit 7ebbd271444d89218870169624921b795a717470)
2025-04-09 09:18:31 +00:00
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