> On Mon, Apr 6, 2015 at 5:42 PM, Brendan Eich <brendan at mozilla.org > <https://mail.mozilla.org/listinfo/es-discuss>> wrote: > >>* Did you keep backward compatibility? `x?.1:y` must continue to work. *> > >This is why I suggested a leading operator (`?a.?b()`) because it seems >like it would have the least potential for conflict with existing valid >syntax
What about something like MemberExpression[?Yield] ? . IdentifierName MemberExpression[?Yield] ? *[* Expression[In, ?Yield] ] Context specific to MemberExpressions, as far as I'm aware there's no otherwise valid ternary expression that could be mixed up for it, and it wouldn't need a cover grammar?
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