Indexing and searching across versioned document collections

Hello,

Has any one worked on making Lucene index and search versioned document
collections i.e any corpus with multiple versions of documents similar to
wikipedia or source code.
I am working on a project to index and search versioned collections while
keeping the index size minimum by taking into consideration differences in
the versions to minimize the size of the index .

Could some one direct me to any existing efforts to make Lucene work with
versions .

Thanks
Jake