Respect new strict parsing of email.utils.getaddresses

[petschki]

preferred solution for #4020 ... successor of #4021

[mister-roboto]

@petschki thanks for creating this Pull Request and helping to improve Plone!

TL;DR: Finish pushing changes, pass all other checks, then paste a comment:

@jenkins-plone-org please run jobs

To ensure that these changes do not break other parts of Plone, the Plone test suite matrix needs to pass, but it takes 30-60 min. Other CI checks are usually much faster and the Plone Jenkins resources are limited, so when done pushing changes and all other checks pass either start all Jenkins PR jobs yourself, or simply add the comment above in this PR to start all the jobs automatically.

Happy hacking!

[petschki]

@jenkins-plone-org please run jobs

[petschki]

@jenkins-plone-org please run jobs

[mauritsvanrees]

Thanks for working on this. I have a few suggestions.
PloneTool.py has these methods:

• validateEmailAddresses: validate a string with possibly multiple email addresses. For each address this calls validateSingleNormalizedEmailAddress.
• validateSingleEmailAddress: validate a string with at most ONE email address. For this address this calls validateSingleNormalizedEmailAddress.
• validateSingleNormalizedEmailAddress only needs to handle one address, obviously.

• In all three methods: after checking if it is a string, can we do a .strip()?
• In the two methods handling only a single address, can we do address.splitlines() and exit when this returns more than one line? In both cases this can replace the use of EMAIL_CUTOFF_RE.

BTW, I agree with your removing this line from the valid inputs:

 [email protected]\n [email protected]",  # omitting comma is ok

[petschki]

BTW, I agree with your removing this line from the valid inputs:

 [email protected]\n [email protected]",  # omitting comma is ok

I first moved this line to the invalid inputs but then it fails on current py3.10 jenkins with no strict parsing.

[petschki]

@jenkins-plone-org please run jobs

[petschki]

Currently its hard to get a green jenkins ...

[petschki]

@jenkins-plone-org please run jobs