Guil Rarey writes: Neat hacks deserve our admiration. Epic kludges, though, have their own "Plan 9 from Outer Space" glory. ThereIFixedIt is dedicated to jury rigs, MacGyver wannabes, and kludges that, errr, may have needed a little more thought.
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals