More name hiding

[Timon Gehr]

On 08/20/2011 08:37 PM, Timon Gehr wrote:
> On 08/20/2011 08:21 PM, bearophile wrote:
>> Timon Gehr:
>>
>>> In some cases, shadowing can be handy for code generation via string
>>> mixins (the shadowing that is disallowed, not the shadowing of globals).
>>
>> Making the language more forbidding makes the generation of code
>> simpler. But it's simpler to write code that generates correct code,
>> than for humans to write bug-free code. So it's much more important to
>> design the language to be good (not bug-prone) to be written by hand.
>>
>> Bye,
>> bearophile
>
> Actually, since some forms of shadowing are still allowed, it makes the
> generation of code slightly more complex.
 > [snip.]

Oh, disregard that first sentence.

How does disallowing shadowing make code generation via string mixins 
simpler?