[Boost-bugs] [Boost C++ Libraries] #2577: ambigous program options

Subject: [Boost-bugs] [Boost C++ Libraries] #2577: ambigous program options
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-12-08 19:16:02

#2577: ambigous program options
----------------------------------------------------------------+-----------
 Reporter:  Georg Sauthoff <gsauthof_at_[hidden]>  |       Owner:  vladimir_prus  
     Type:  Bugs                                                |      Status:  new            
Milestone:  To Be Determined                                    |   Component:  program_options
  Version:  Boost 1.34.1                                        |    Severity:  Regression     
 Keywords:                                                      |  
----------------------------------------------------------------+-----------
 Basically a variation of this regression:
 http://lists.boost.org/Archives/boost/2006/01/98811.php


 To trigger it again you have to slightly modify the test case:
 {{{
 # include <iostream>
 # include <boost/program_options.hpp>

 int main(int argc, char * argv[])
 try {
     using namespace boost::program_options;

     options_description desc("Options");
     desc.add_options()
         ("foo", "foo")
         ("foobar", "foobar")
         ("foo-bar", "foo-bar")
         ("barbar", "barbar")
         ("bar-bar", "bar-bar")
         ("bar", "bar")
         ;
     parsed_options parsed = parse_command_line(argc, argv, desc);
     variables_map vm;
     store(parsed, vm);
     notify(vm);
     std::cerr << vm.count("foo") << std::endl;
     std::cerr << vm.count("foobar") << std::endl;
     std::cerr << vm.count("foo-bar") << std::endl;
     std::cerr << vm.count("bar") << std::endl;
     std::cerr << vm.count("barbar") << std::endl;
     std::cerr << vm.count("bar-bar") << std::endl;
 } catch (std::exception & ex) {
     std::cerr << argv[0] << ": " << ex.what() << std::endl;
     return EXIT_FAILURE;
 }
 }}}

 {{{
 $ ./a.out --foo
 1
 0
 0
 0
 0
 0
 }}}
 {{{
 $ ./a.out --bar
 ./a.out: ambiguous option bar
 }}}

 Btw, wouldn't it make more sense, if boost program_options would do its
 ambiguity checking as part of add_options()? I mean before the actual
 parsing step ...

 PS: Take a look at: https://svn.boost.org/trac/boost/ticket/545

 I get there:
 {{{
 Oops…
 Trac detected an internal error:
 TypeError: a float is required
 }}}

 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2577>
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