string.split bug?

[Erik Max Francis]

MetalOne wrote:

> string.split("") ==> []
> string.split("",",") ==> ['']
> 
> I did not expect these to have different outputs.

S.split(None) is a special case which keys off of all whitespace, not
just a single delimiter string.  So when presented with an input string
that contains nothing but whitespace, it strips everything and doesn't
find any tokens at all.

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