There is nothing special about " " (see gmax's example above). You are confusing it with ' '.
I don't understand how gmax example shows it. Could you
provide us with a single string on which splitting with
" " produces a different result than splitting
with ' '?
It would be very, very strange if split produces different
results, because the difference between " "
and ' ' has disappeared long before split is
called. After compile time, the difference between
" " and ' ' is gone.
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