Unicode property escapes in regular expressions

The Unicode Standard assigns various properties and property values to every symbol. For example, to get the set of symbols that are used exclusively in the Greek script, search the Unicode database for symbols whose Script property is set to Greek. Unicode property escapes are a new type of escape sequence available in regular expressions that have the `u` flag set. They enable querying the Unicode database for certain properties and values. E.g. `/\p{Script=Greek}/u.test('π') === true`

Documentation

• https://mathiasbynens.be/notes/es-unicode-property-escapes
• https://developers.google.com/web/updates/2017/07/upcoming-regexp-features#unicode_property_escapes

Specification

Editor's draft

Status in Chromium

Blink components: Blink>JavaScript>Language

Enabled by default (tracking bug) in:

• Chrome for desktop release 64
• Chrome for Android release 64
• Android WebView release 64

Consensus & Standardization

• Firefox: Public support
• Edge: Public support
• Safari: Shipped
• Web Developers: Strongly positive

Owners

• yangguo@chromium.org
• mathias@chromium.org

Last updated on 2017-11-14