# Test the --barriers examples from the manpage.

# The first one matches a line it probably shouldn't.
echo 127.0.0.100 | grep -P $(echo 127.0.0.1/32 | dist/build/hath/hath)
>>>
127.0.0.100
>>>= 0

# This one uses --barriers, and doesn't match that same line.
echo 127.0.0.100 | grep -P $(echo 127.0.0.1/32 | dist/build/hath/hath -b)
>>>
>>>= 1

# But, using barriers makes the regexp match something it shouldn't.
echo x127.0.0.1x | grep -Po $(echo 127.0.0.1/32 | dist/build/hath/hath -b)
>>>
x127.0.0.1x
>>>= 0