Showing line number with filename in ack

Question

when I search using ack I get results like this

/path/to/file/name
42: <code>goes here</code>

How do I get ack to return results like this instead:

/path/to/file/name:42 : <code>goes here</code>

Answer 1

Use the --nogroup option.

If you still want blank lines between each file's results, use the --break option.