What is a valid key?

[Steven Grimm]

On Dec 19, 2007, at 7:43 PM, Dustin Sallings wrote:
>> For the binary protocol I think none of this should matter at all.  
>> A key has a key length, so the question of valid characters should  
>> not be relevant.
>
> 	That's true, but it'd be really nice to not have different rules  
> based on protocol.

In particular, I think it's unacceptable to be able to set a key/value  
pair with the binary protocol that you can't retrieve with the text  
protocol.

-Steve