Paul Beckingham e08d840ba1 Expressions ...

- Broke out expression handling into two distinct flavors: filter
  and expression.  Filters need lots of preparation and mapping,
  which includes implicit 'AND' operators, expansion of syntactic
  sugar like /pattern/ etc and evaluate to a Boolean.  Expressions
  are simpler wiht less preparation, and evaluate to a Variant.

2011-07-17 12:04:38 -04:00

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