On Mon, Aug 19, 2013 at 5:25 AM, Mathias Bynens <[email protected]> wrote: > After comparing the output, I noticed that both regular expressions are > identical except for the following: ECMAScript 5 allows U+2E2F VERTICAL TILDE > in `IdentifierStart` and `IdentifierPart`, but ECMAScript 6 / Unicode TR31 > doesn’t.
Per ES6 identifiers start with code points whose category is ID_Start which per http://www.unicode.org/reports/tr31/ includes Lm which per http://www.unicode.org/Public/UNIDATA/UnicodeData.txt is true for U+2E2F. So why exactly is it disallowed? Unless I'm missing something, the discussion we had in TC39 yesterday was moot, and these bugs are invalid: https://bugs.ecmascript.org/show_bug.cgi?id=1802 https://bugzilla.mozilla.org/show_bug.cgi?id=917436 https://bugs.webkit.org/show_bug.cgi?id=121541 https://code.google.com/p/v8/issues/detail?id=2892 And IE10 and maybe IE11 have a bug in not allowing it. -- http://annevankesteren.nl/ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
