Hi I'm using xpressive 1.0.1 from the vault (thanks for a great library BTW). When using static regexes and regex_token_iterators, dereferencing the iterator does not always give the expected matching string. Take for instance the example 5 about splitting a string into tokens that each match a regex. If you use sregex time = (_d) >> ':' >> (_d >> _d); instead of sregex time = sregex::compile( "(\\d):(\\d\\d)" ); the output is empty for the input string "Eric: 4:40, Karl: 3:35, Francesca: 2:32". The first impression while debugging is that grouping is not working. The first match on this sample is "4:40" instead of expected "4". I decided to ask for help before continue debugging, just in case this was already known. For completeness, here is the rest of the sample code: int const subs[] = { 1, 2 }; sregex_token_iterator cur( str.begin(), str.end(), time, subs ); sregex_token_iterator end; for( ; cur != end; ++cur ) { std::cout << *cur << '\n'; } Thanks in advance. Jorge