| Summary: | Use Unicode 9’s `ID_Start` & `ID_Continue` for identifiers | ||||||||
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| Product: | WebKit | Reporter: | Mathias Bynens <mathias> | ||||||
| Component: | JavaScriptCore | Assignee: | Yusuke Suzuki <ysuzuki> | ||||||
| Status: | NEW --- | ||||||||
| Severity: | Normal | CC: | mathias, msaboff, ysuzuki | ||||||
| Priority: | P2 | ||||||||
| Version: | WebKit Nightly Build | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| See Also: |
https://bugzilla.mozilla.org/show_bug.cgi?id=1282724 https://bugs.chromium.org/p/v8/issues/detail?id=5155 |
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| Attachments: |
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Created attachment 282228 [details]
Node.js script that outputs lists of new `ID_Start` and `ID_Continue` symbols
Created attachment 282229 [details]
results.js
Bugzilla won’t allow me to add https://github.com/Microsoft/ChakraCore/issues/1208 to the “See also” list. Can that be fixed? Per <http://www.ecma-international.org/ecma-262/7.0/>, "A conforming implementation of ECMAScript must interpret source text input in conformance with the Unicode Standard, Version 8.0.0 or later and ISO/IEC 10646". The intent is to use the latest available Unicode version. See https://github.com/tc39/ecma262/pull/620 for some discussion. |
* Unicode 8 has 2,518 `ID_Start` symbols; Unicode 9 has 2,669, i.e. 151 more (no removals). * Unicode 8 has 109,830 `ID_Continue` symbols; Unicode 9 has 117,007, i.e. 7,177 more (no removals). E.g. these should not throw per Unicode 9: Function('var \u{1E943}'); // new ID_Start Function('var _\u{1E959}'); // new ID_Continue I’ve attached `results.js` which contains the full list of new `ID_Start` and `ID_Continue` symbols in Unicode 9, and the Node.js script used to generate it.