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Apply Unicode flag to `pattern' content attribute of INPUT element

Category

Miscellaneous

Type

New or changed feature

Status

Enabled by default (Chrome 53)

Intent stage

None

Summary

Apply the unicode flag to `pattern' attribute values. Syntax checking will be stricter, and '.' matches to a surrogate pair, and some other benefits.

Standards & signals

• Specification: https://html.spec.whatwg.org/multipage/forms.html#the-pattern-attribute
• Firefox: Shipped/Shipping
• Safari: No signal
• Web developers: No signals
• Tracking bug: http://crbug.com/535441

Docs: https://mathiasbynens.be/notes/es6-unicode-regex

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