5. The search system of claim 1 , wherein the pipelined search engines comprise: a deterministic finite automaton (DFA) engine to store first sub-expressions that comprise stings; and a non-deterministic finite automaton (NFA) engine to store second sub-expressions having selected quantified character classes.
5. The search system of claim 1 , wherein the pipelined search engines comprise: a deterministic finite automaton (DFA) engine to store first sub-expressions that comprise stings; and a non-deterministic finite automaton (NFA) engine to store second sub-expressions having selected quantified character classes. 8. The search system of claim 5 , wherein the NFA engine is selectively enabled by the DFA engine in response to a trigger signal provided onto the result pipeline.