ES6 doesn't need opt-in

Mark S. Miller erights at
Fri Jan 6 19:36:37 PST 2012

On Fri, Jan 6, 2012 at 12:25 PM, Allen Wirfs-Brock <allen at>wrote:

> Other ES5 opt-ins at the top level include:
> var arguments;
> function ES5(yes,yes){};

Please stop calling these ES5 opt-ins. They preclude the Program from being
strict, and so are forcing ES5-not-strict. Non confusing names for this are:


By continuing to call this simply ES5 while precluding the program from
being an ES5-strict program, you confuse the crucial issue I'm trying to

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