Parser Operators Feature List in X3 compared with QI

Hello,

I have been exploring X3 over the last few weeks and it looks very
interesting. I have been comparing the features of QI (2.5.3) with those of
X3 (in development). 

One of the questions I have is regarding support for the Parser Operators:
Sequential Or *(a || b)* and Permutation (*a ^ b)*.

While both are present in QI, I notice that these are currently not present
in X3 development and wondered what the plans are regarding support for
these operators in X3 ?

I guess that the rule expression *a >> -b | b* could be used instead of the
Sequential Or operator. I can't think of an alternative way of 
expressing the Permutation Parser.

Thanks,

Dave




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