[Boost-users] [program_options] Getting access to the remaining argv

Hi there, I have a program ("A") that calls other, external programs ("B"). A can get a number of command line options, which are parsed with the help of the program_options library. B may also accept options (which are possibly defined by other people and not known to me in advance). Thus I want to pass all those options that are not known to A on to B, in the hope that they are needed for that program. Is there a way to retrieve the remaining argv string, with all options "known" to A removed ? Or should I better invent a flag of the following kind for A --external-options="-a 1 -b 2 -c 3" whose value is passed on to the external program ? Thanks and Best Regards, Ruediger