GNU egrep uses \{N,K\} for repetitions, while GNU grep -E and perl uses {N,K}.
GNU egrep and grep -E use the same setup code for the grep core. So I don't see how they can be different.
In reply to Re^2: differnce between egrep and perl regex ?
by nevyn
in thread differnce between egrep and perl regex ?
by Random_Walk
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