id summary reporter owner description type status milestone component version severity resolution keywords cc 1082 Doc error with program_options zero_tokens() ( docs say zero_token() ) boost@… Vladimir Prus "The boost program_options docs here: http://www.boost.org/doc/html/program_options/overview.html say that zero_token() can be used to indicate a program option does not need a parameter. The code for 1.33.1 and latest in cvs has the following (note the extra 's'): typed_value* zero_tokens() " Bugs closed To Be Determined program_options Boost 1.34.0 Problem fixed