Fri Mar 7 15:32:22 PST 2014
"The value of separator may be an empty String, an empty regular expression, or a regular expression that can match an empty String. In this case, separator does not match the empty substring at the beginning or end of the input String, nor does it match the empty substring at the end of the previous separator match."
In this case, the regexp can only match an empty substring at the end of the input, and by the above text, that match is ignored wrt. splitting, so the result should be the same as with no match, ["a"].</pre>
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