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check on is_email() to be more RFC5322 compliant#7207

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brobken wants to merge 1 commit intoWordPress:trunkfrom
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check on is_email() to be more RFC5322 compliant#7207
brobken wants to merge 1 commit intoWordPress:trunkfrom
brobken:is-mail

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@brobken brobken commented Aug 18, 2024

I've seen an increased abuse on our different form plugins lately, which are basicly relying on this function as a basis to very if an e-mailaddress is valid.

I've added another RegEx that checks if there are misplaced periods in the local part of the e-mailaddress.
It checks wether if it has a dot at the start, end or a dot sequence.
This is based on the RFC5322 standard.

Trac ticket: https://core.trac.wordpress.org/ticket/17491


This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

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The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core Committers: Use this line as a base for the props when committing in SVN:

Props brobken.

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

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