Boost C++ Libraries: Ticket #545: Program_options: Fails to parse options with a common root

status changed

Vladimir Prus — Mon, 09 Jan 2006 09:09:27 GMT

status assigned → closed

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A fix and a test were just committed.
Thanks for the report!

attachment set

christian.blichmann@… — Tue, 22 Jun 2010 13:10:36 GMT

attachment → program_options.patch

Patch for parsing options with same name-prefix

severity set

christian.blichmann@… — Tue, 22 Jun 2010 13:11:22 GMT

severity → Problem

As of Boost 1.43.0 this is still problematic, see the test case below:

#include <iostream> #include <boost/program_options.hpp> namespace po = boost::program_options;

int main(int argc, char *argv[]) {

try {

bool all, all_chroots, all_sessions;

po::options_description chroot("Chroot selection"); chroot.add_options()

("flag", "Some boolean flag") ("flag2", "Another flag that gets matched approximately");

po::variables_map vm; po::store(po::parse_command_line(argc, argv, chroot), vm); po::notify(vm);

std::cout << "flag: " << vm.count("flag") << std::endl; std::cout << "flag2: " << vm.count("flag2") << std::endl;

return 0;

} catch (std::exception const& e) {

std::cerr << e.what() << std::endl; return 1;

}

}

Results:

$ g++ -o po-test po-test.cpp -lboost_program_options $ ./po-test --flag flag: 0 flag2: 1 $ ./po-test --flag2 flag: 0 flag2: 1 $ ./po-test --flag --flag2 multiple occurrences

Expected results (after applying program_options.patch):

$ ./po-test --flag flag: 1 flag2: 0 $ ./po-test --flag2 flag: 0 flag2: 1 $ ./po-test --flag --flag2 flag: 1 flag2: 1

status, component, summary, version changed; milestone set; resolution deleted

christian.blichmann@… — Tue, 22 Jun 2010 13:13:53 GMT

status closed → reopened
component None → program_options
summary Proogram_options: Fails to parse options with a common root → Program_options: Fails to parse options with a common root
version None → Boost Development Trunk
milestone → Boost 1.44.0
resolution Fixed

Vladimir Prus — Tue, 22 Jun 2010 15:54:41 GMT

You have set 'version' to 'Boost Development Trunk'. Have you actually tried with trunk? I guess not, since trunk appears to give your expected results on your testcase. Could you please double-check with trunk, and then mark this issue fixed again?

status changed; resolution set

christian.blichmann@… — Thu, 24 Jun 2010 07:18:10 GMT

status reopened → closed
resolution → fixed

Replying to vladimir_prus:

You have set 'version' to 'Boost Development Trunk'. Have you actually tried with trunk? I guess not, since trunk appears to give your expected results on your testcase. Could you please double-check with trunk, and then mark this issue fixed again?

You're right, trunk fixes the problem. I selected "Trunk" by mistake, sorry. Setting to "fixed" again.