added support for advanced naming pattern + final replacement

[ka2er]

As we have discussed few weeks ago here's some commit that add the earlier mentionned possibility.

Please don't hesitates to ask me to refactor if something is wrong.

thanks

[leocrawford]

Hi. thanks for the push. It looks like a great feature, and the code looks pretty tight too.

I've made a couple of comments, which might help improve code consistency slightly. If I've got the wrong end of the stick then please do let me know.

I'll merge the changes as-is, and if you do want to make any further improvements based on comments or anything else I'll happily merge those too.

Thanks again!