id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4541,"Options starting with ""opt_"" not recognized by command line parser",Peter Hepperger <hepperger@…>,Vladimir Prus,"Hello,

I have a strange problem when using boost::program_options. Options whose name starts with ""opt_"" seem to be ignored by the command line parser. I tried to declare an option of type string with name ""opt_method"". If I enter the command line parameter --opt_method='foo', the option value 'foo' is not present afterwards (the value is still equal to the default value, if any is declared). The parameter is read correctly when using a configuration file, however.

Moreover, if I do NOT declare an option with this name, but still enter the command line parameter, there is no boost::program_options::unknown_option exception thrown. As soon as I change the name of the option to ""optmethod"" or ""method"", the problems are gone. 

Best regards,
Peter",Bugs,closed,,program_options,Boost 1.43.0,Problem,duplicate,,