id summary reporter owner description type status milestone component version severity resolution keywords cc 4159 program_options fails with similar parameter names anonymous Vladimir Prus Assume we have two parameters specified, namely myparam and myparam-other. If these are specified (with add_params()) in the given order, the parameter --myparam will be mistakenly assigned to myparam-other. If they are specified in reverse order, everything will be fine. I guess this is not the intended behavior. Bugs closed Boost 1.43.0 program_options Boost 1.42.0 Problem fixed