For future reference: this landed <https://chromium.googlesource.com/v8/v8.git/+/2feb99dc8ac75f20d2e5c9c1b343e923476851ea%5E%21/> in V8 v6.4.276 and should thus be available in Chrome 64.
On Thu, Nov 9, 2017 at 10:48 PM, Adam Klein <ad...@chromium.org> wrote: > LGTM (for v8 signoff purposes). > > On Thu, Nov 9, 2017 at 1:38 PM, 'Mathias Bynens' via blink-dev < > blink-...@chromium.org> wrote: > >> Note that since this is a V8/JS feature, this post is just an FYI to >> blink-dev — no signoff from Blink API owners is required. >> >> On Thu, Nov 9, 2017 at 10:29 PM, Mathias Bynens <math...@chromium.org> >> wrote: >> >>> Contact emails >>> >>> yang...@chromium.org, math...@chromium.org >>> >>> Spec >>> >>> https://github.com/tc39/proposal-regexp-unicode-property-escapes (stage >>> 3 proposal) >>> >>> Summary >>> >>> 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 >>> >>> Link to “Intent to Implement” blink-dev discussion >>> >>> There was none. >>> >>> Is this feature supported on all six Blink platforms (Windows, Mac, >>> Linux, Chrome OS, Android, and Android WebView)? >>> >>> Yes. >>> >>> Demo link >>> >>> None. The explainer in the proposal offers some examples. >>> >>> Interoperability and Compatibility Risk >>> >>> In regular expressions without the u flag, the pattern \p is an >>> (unnecessary) escape sequence for p. Patterns of the form \p{Letter} >>> might already be present in existing regular expressions without the u >>> flag, and therefore we cannot assign new meaning to such patterns without >>> breaking backwards compatibility. >>> >>> For this reason, ECMAScript 2015 made unnecessary escape sequences like >>> \p and \P throw an exception when the u flag is set. This enables us to >>> change the meaning of \p{…} and \P{…} in regular expressions with the u >>> flag without breaking backwards compatibility. >>> >>> >>> - >>> >>> Edge/Chakra: public support; tracking issue: >>> https://github.com/Microsoft/ChakraCore/issues/2969 >>> <https://github.com/Microsoft/ChakraCore/issues/2969> >>> - >>> >>> Firefox/SpiderMonkey: public support; tracking issue: >>> https://bugzilla.mozilla.org/show_bug.cgi?id=1361876 >>> <https://bugzilla.mozilla.org/show_bug.cgi?id=1361876> >>> - >>> >>> Safari/JavaScriptCore: shipped in Safari Technical Preview 42; >>> tracking issue: https://bugs.webkit.org/show_bug.cgi?id=172069 >>> - >>> >>> Web developers: positive signals >>> >>> >>> Is this feature fully tested? >>> >>> Yes. In addition to V8’s own tests (v8/test/mjsunit/harmony/regex >>> p-property-*.js), Test262 includes tests for this feature >>> <https://github.com/tc39/test262/tree/master/test/built-ins/RegExp/property-escapes> >>> . >>> >>> OWP launch tracking bug >>> >>> https://bugs.chromium.org/p/v8/issues/detail?id=4743 >>> >>> Entry on the feature dashboard <http://www.chromestatus.com/> >>> >>> https://www.chromestatus.com/features/6706900393525248 >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "blink-dev" group. >> To view this discussion on the web visit https://groups.google.com/a/ch >> romium.org/d/msgid/blink-dev/CADizRgbnTY1wLi6ZrF4_w74-PyZSg >> ZgUruJrP4Q6-O1i5t6aMg%40mail.gmail.com >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADizRgbnTY1wLi6ZrF4_w74-PyZSgZgUruJrP4Q6-O1i5t6aMg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
