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Using `--after-context`/`-A` or `--before-context`/`-B` would give a warning recommending the user to use `grep -c`, even though that would give a different result than using `grep | wc -l`: ```fundamental $ echo -e "1\n2\n3" | grep -cA 3 1 1 $ echo -e "1\n2\n3" | grep -A 3 1 | wc -l 3 ```