[Boost-users] i18n (and program_options)

Hi, I am using spirit and program_options so far. When Boost.Program_options fails to parse some command line options it throws an exception (which is fine). So far, I write (if e is such an exception) e.what() to stderr. An obvious example of the the output I get is 'unknown option ...' I would like to present my users a text in their own language (i.e. german). Does Boost or Boost.Program_options support i18n? If yes, how can I set the language to use? (Or is the intended use to catch the exception, analyze it and produce my own translation?) Best regards, Christoph