John Maddock, I love regex_token_iterator's vector<int> constructor - it fits my needs perfectly! However, my use of it is generating a trivial warning that should be fixed. Using Boost CVS 20040427, in boost/regex/v4/regex_token_iterator.hpp, the member flags is declared on Line 59: match_flag_type flags; And the member subs is declared on Line 62: std::vector<int> subs; However, they are initialized in a different order in the constructor on Lines 67-68: regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const std::vector<int>& v, match_flag_type f) : end(last), pre(p), subs(v), flags(f){} This upsets my ninja warning options on gcc 3.3.3, since members should appear in an initialization list in the same order that they are declared, for safety reasons. There may be other initialization order warnings lurking in the code that my program does not yet trigger. I am always impressed with your prompt attention to my regex issues; thanks again for the hard work! Stephan T. Lavavej http://nuwen.net