bug#28682: Possible bug in conflict between -m and -A

[Jesse Eedrah]

Hi there! I have potentially found a suprising result when I use the grep
options -m and -A together. It surprised me, so let me know if I've found a
bug. It would be nice if I could contribute a fix - I'd love to contribute
to the project.

Below is bash code to replicate.

Best regards,
Jesse

#############
#! /bin/bash

test='1 Hello
2 Hello
3 Hello
4 World
5 World
6 World
7 Hello
8 World'

[[ $( echo "$test" | grep -m 2 Hello | cat ) == '1 Hello
2 Hello' ]] && echo Pass || echo Fail

[[ $( echo "$test" | grep -A 2 Hello | cat ) == '1 Hello
2 Hello
3 Hello
4 World
5 World
--
7 Hello
8 World' ]] && echo Pass || echo Fail

[[ $( echo "$test" | grep -A 3 -m 3 Hello | cat ) == '1 Hello
2 Hello
3 Hello
4 World
5 World
6 World' ]] && echo Pass || echo Fail

[[ $( echo "$test" | grep -A 3 -m 2 Hello | cat ) == '1 Hello
2 Hello
3 Hello
4 World
5 World
6 World' ]] && echo Pass || echo Fail
echo Actually outputs:
echo "$test" | grep -A 3 -m 2 Hello | cat