id summary reporter owner description type status milestone component version severity resolution keywords cc 5464 Problem with implicit value in program options lcarreon@… Vladimir Prus "I have created a test program (test_progopts.cpp, please see attachment) to familiarize myself with the program options library. I have compiled and run the test on Windows. In my test program I have two visible options ""help,?"" and ""bool-opt,a"" and one hidden options ""input-file"". If I run the test program using the following commands, I get my expected result: test_progopts -? test_progopts --help test_progopts -a test_progopts --bool-opt test_progopts test1.cpp However, if I run the test program using these commandc, it fails: test_progopts -a test1.cpp test_progopts --bool-opt test1.cpp I get the error message: in option 'bool-opt': invalid bool value From this error message, it appears that the implicit value is not working. Is my observation valid? " Support Requests closed To Be Determined program_options Boost 1.45.0 Problem fixed implicit