yield syntax (diverging from: How would shallow generators compose with lambda?)

[Mark S. Miller]

On Sun, May 17, 2009 at 11:00 AM, Brendan Eich <brendan at mozilla.com> wrote:
> Analogous to direct vs. indirect eval in ES5 (15.1.2.1.1), there is no
> purely syntactic specification for what Neil proposes. A runtime check is
> required. So I don't see why you are focusing only on syntax here.

I don't follow. What runtime check? For the eval operator, the runtime
check is whether the value of the eval variable is the original global
eval function. It makes no sense to have a corresponding global yield
function value.

-- 
    Cheers,
    --MarkM