"".split(//,2) different between 1.6 and 1.8

[Aron Griffis]

I've just noticed the following. When using Ruby 1.6, I get the
following String.split behavior:

irb(main):001:0> "".split(//,2)
[""]

And when using Ruby 1.8, I get the following instead:

irb(main):007:0> "".split(//,2)
=> []

Is this intentional?

Thanks,
Aron