When I tried the expression
value.smartSplit(/([A-Z])\w+/)
or just
value.smartSplit(/\W/)
on a String value of
k__Archaea;p__Crenarchaeota;c__Thaumarchaeota;o__Cenarchaeales;f__Cenarchaeaceae;g__;s__
I got an error in the Expression Preview as:
Error: java.lang.UnsupportedOperationException: The separator, quote, and escape characters must be different!