New version, Lucene question.

With the new version of product using the Lucene search engine (, will it be possible to customize the search index?

We would like to have a search return items based the what community the user has access to.

If it is not possible with the old versions, it is not possible with lucene.
The underlying search engine has been replaced, but the interface remained same.

Search results should already be limited by community. Have you found a case where the search returns items that the user has no access to?