Tip: The HTML `pattern` attribute enables Unicode RegExp mode, meaning things like Unicode property escapes Just Work™! Demo: https://mathiasbynens.be/demo/pattern-u-property-escapes …pic.twitter.com/tC8SRcXOL3
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I don't know. It just felt suspicious to me that RegExp is getting more featrueful, since the XSS have beena default addition with every feature in the web. Hopefully this is not another one.
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