As suggested here https://github.com/WebKit/WebKit/pull/14467#pullrequestreview-1451367941. The event and for attribute values are used for comparisons only, so StringView would be more efficient. Looks like there is no need to convert from AtomString to String for these either. RegularExpression::match() already takes a StringView so updating isValidEmailAddress() should be straightforward.
<rdar://problem/110047074>
Pull request: https://github.com/WebKit/WebKit/pull/14527
Committed 264736@main (f8eaba1e9189): <https://commits.webkit.org/264736@main> Reviewed commits have been landed. Closing PR #14527 and removing active labels.