Wildcard searches with space in TextField/StrField

[Sandeep Khanzode]

Hi,
How does a search like abc* work in StrField. Since the entire thing is stored 
as a single token, is it a type of a trie structure that allows such wildcard 
matching? 
How can searches with space like 'a b*' be executed for text fields (tokenized 
on whitespace)? If we specify this type of query, it is broken down into two 
queries with field:a and field:b*. I would like them to be contiguous, sort of, 
like a phrase search with wild card.
SRK