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Answers and rating deltas for

Why does this `grep -o` fail, and how should I work around it?

Author Votes Δ
Grandpa 8 +3.87
ghostdog74 2 +1.08
Sebastian 1 0.00
Paused until further notice. 0 -1.57
Robert -1 0.00
Last visited: Sep 14, 2014, 5:07:29 AM