> On the & operator... are you saying that it would operate basically as 
> expected... 
> allowing sets of rules and'ed rather than or's with the | ?

Yes, with the limitation that both parts separated by & have to match
the same length of string, so that for example

^ [ a+ & . ** 3 ]

could only match exactly 3 a's. If you don't want to them tied to the
same length, you look-ahead assertions instead.


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