Bug: Piping to ack --count

[petdance]

Reported by Michal on ack dev/users:

$ ack --count pattern file
file:2

but when I run

$ cat file | ack --count pattern
body body pattern body
body body pattern body

so --count doesn't work when data is piped into ack. Is it meant
behavior?

But grep works this way:

$ cat file | grep -c pattern
2

[petdance]

Fixed by blixtor.