Hello All, Following this discussion:     [regex] How robust are the <boost/regex/pending/unicode_iterator.hpp> adapters?     http://thread.gmane.org/gmane.comp.lib.boost.devel/221643 Boost.Locale will ship **header-only**  utf_to_utf conversion functions and provide operations that would allow implementing iteration over UTF-XX sequences. This was one of the review requests and it will be integrated in few days into trunk. Functions:     namespace boost { namespace locale { namespace conv {      template<typename CharOut,typename CharIn>       std::basic_string<CharOut> conv::utf_to_utf(CharIn const *begin,CharIn const *end,method_type how=skip);      template<typename CharOut,typename CharIn>       std::basic_string<CharOut> conv::utf_to_utf(CharIn const *str,method_type how=skip);      template<typename CharOut,typename CharIn>       std::basic_string<CharOut> conv::utf_to_utf(std::basic_string<CharIn> const &str,method_type how=skip);     }}} // boost::locale::conv Also it would provide basic utf encoding/decoding operations that would allow to create iterators over generic streams     namespace boost { namespace locale { namespace utf {        typedef uint32_t code_point;        static const code_point illegal    = ... ;        static const code_point incomplete = ... ;        // Get one code point from UTF stream        template<typename InputIterator>        code_point decode(InputIterator &p,InputIterator e);        // Write one code point to UTF stream        template<typename OutputIterator>        Iterator encode(code_point u,OutputIterator e);        // Get size of code point in basic unit        template<typename CharType>        int units_in_code_point(code_point u);     }}} // boost::locale::utf It should be ready very soon... Artyom Beilis -------------- CppCMS - C++ Web Framework: http://cppcms.sf.net/ CppDB - C++ SQL Connectivity: http://cppcms.sf.net/sql/cppdb/