Backwards compatibility and U+2E2F in `Identifier`s

Mathias Bynens mathias at
Thu Aug 22 21:51:48 PDT 2013

On 19 Aug 2013, at 11:25, Mathias Bynens <mathias at> 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.
> Was this potentially breaking change intentional? I’m fine with disallowing U+2E2F, but only if we’re sure it doesn’t break any existing code.

Follow-up: since this thread is being ignored, I filed <>.

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