[issue39040] Wrong attachement filename when mail mime header was too long

[Abhilash Raj]

Change by Abhilash Raj <raj.abhilash1 at gmail.com>:


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pull_requests: +17090
pull_request: https://github.com/python/cpython/pull/17620

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39040>
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