[Boost-bugs] [Boost C++ Libraries] #3813: program_options::options_description.add() permits duplicate options

Subject: [Boost-bugs] [Boost C++ Libraries] #3813: program_options::options_description.add() permits duplicate options
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-01-03 17:00:43

#3813: program_options::options_description.add() permits duplicate options
--------------------------------------------------------+-------------------
 Reporter:  Matthew Wesley <weslem-boosttrac@…>         |       Owner:  vladimir_prus  
     Type:  Bugs                                        |      Status:  new            
Milestone:  Boost 1.42.0                                |   Component:  program_options
  Version:  Boost 1.41.0                                |    Severity:  Problem        
 Keywords:                                              |  
--------------------------------------------------------+-------------------
 The documentations for options_description.add() says it will through
 duplicate_variable_error for duplicate short or long options. I have check
 versions 1.32.0 and 1.41.0, and both permit this code:
 {{{
 #include <boost/program_options.hpp>
 #include <iostream>

 namespace po = boost::program_options;

 int main()
 {
     po::options_description opts;

     opts.add_options()
         ("help", "first  --help")
         ("help", "second --help")
         ;
     opts.add_options()
         ("alpha,a", "first  -a")
         ("apple,a", "second -a")
         ;


     std::cout << opts;

     return 0;
 }
 }}}

 Producing this output:
 {{{
   --help                first  --help
   --help                second --help
   -a [ --alpha ]        first  -a
   -a [ --apple ]        second -a
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3813>
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