Feature requests

These are all features that we are not implementing now.

This is not to say that we might not add them in the future, just that they're not being done now.

Provide an option in ack to only parse files passed to it.

ack -x takes a list of files that ack will search, kind of like xargs. It also doesn't pay any attention to --type. A request has come in to have -x respect --type. (GH #614)