[Boost-users] [xpressive] Overlapping match results?

Subject: [Boost-users] [xpressive] Overlapping match results?
From: Dave Jenkins (david_at_[hidden])
Date: 2008-12-15 22:58:38

Is there a way to get overlapping match results from Xpressive?  For 
example, when searching for "aa" in the string "aaaa", I want three results 
[as]as, a[aa]a, and aa[aa].  Currently, I'm only getting the two 
non-overlapping results [aa]aa and aa[aa].

I tried the regex  'a' >> before('a').  That almost gave me what I wanted 
(three results with the correct positions).  The problem is that the lengths 
are wrong.  What I need are lengths that include the before() characters. Is 
that possible?  I know in this simple example I could just add 1 to the 
lengths, but I'm looking for overlapping results on more complex regexes.

Thanks,
Dave Jenkins