compareSpecificityTo

Determine the relative specificity of the receiver and the argument. The relative specificity of two patterns is determined according to the following criteria:

• If two patterns are equal, then they are equally specific.

• All exact matches are mutually incomparable.

• Any exact match is more specific than any inexact match.

• For inexact matches, given two patterns P and Q, the following rules are applied in order:

• If P contains Q, then P is more specific.

• If |successions(P)| = |successions(Q)|, where successions computes the successions of its argument, and every succession of P is more specific than the corresponding succession of Q, then P is more specific.

• If |successions(P)| = 1 and |successions(Q)| > 1, then P and Q are incomparable.

• If every succession of P occurs within Q, preserving order and advancing monotonically, and |P| ≤ |Q|, then Q is more specific.

• Otherwise, P and Q are incomparable.

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