[boost] [iostreams] Yet another utf8 code copy?

I note that there's libs/iostreams/test/detail/utf8_codecvt_facet.cpp file. Is there any chance that instead of duplicating code, the boost/detail/utf8_codecvt_facet.hpp and libs/detail/utf8_codecvt_facet.cpp will be used, just like program_options and serialization do now? - Volodya