id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3813	program_options::options_description.add() permits duplicate options	Matthew Wesley <weslem-boosttrac@…>	Sascha Ochsenknecht	"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
}}}

"	Bugs	new	Boost 1.42.0	program_options	Boost 1.41.0	Problem