[issue41206] behaviour change with EmailMessage.set_content

[Łukasz Langa]

Łukasz Langa <lukasz at langa.pl> added the comment:

Good catch!

No need to revert anything. The raised ValueError is a relatively simple thing to fix. xtreak, mind making a follow-up PR to restore behavior with no \n characters?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41206>
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