Word Indexing

Hi all, specially the developers!

There is a feature which I would like to see - but which, I suppose, will not make it into PostGreSQL any time soon. It would mean to re-write a lot of the indexing (my guess). It's called 'Word Indexing" and it's functionality would allow something like

Select * from text_table
where text_table.text contains 'Red'
and text_table.text contains 'Blue*'
and text_table.text not contains 'Green';

I actually have an application where this would come in extremely handy. Can anybody give me a clue if this is planned for any time in the foreseeable future?

Best regards,
Chris