How can I exclude .min.css files from an ack-grep seach?

I've got the syntax of adding a new ack-grep filetype:

$ ack-grep --type-add=min=.min.js,.min.css --help types | grep min
    --[no]min          .min.js .min.css

But the problem is that it doesn't seem to ever match any files, possibly because my extensions (.min.js / .min.css) have 2 dots in them.

$ touch test.min.js
$ ack-grep --min -f
    [nothing returned]

So how can I make ack-grep recognise a filetype with 2 dots in it? And if that's not possible how can I search js and css files without matching minified versions?

Solution

Ack will ignore min.js files as of 1.96. Seems this was included within a pull request 142. As for CSS seems that wont happen in 1.x. There is though a pull request if you could be bothered installing your own fork on 219.