On 11/29/12 1:41 AM, Levin Du wrote:
> Hi Daniel,
> 
> My Emacs version is "GNU Emacs 24.3.50.1".
> 
> I tried:
> 
> (defgenerator mygen (i)
>   (yield 1)
>   (yield i)
>   (yield 3))
> 
> (let ((gen (mygen 100)))
>   (list  (funcall gen)
>          (funcall gen)
>          (funcall gen)))
> 
> but failed with:
> 
> Debugger entered--Lisp error: (void-variable cps-current-state-91642)

lexical-binding needs to be t. Is it okay for defgenerator to let-bind
it at top-level as long as it preserves dynamic binding semantics for
the actual code generated?