[Boost-users] positional arguments in boost::program_options

Subject: [Boost-users] positional arguments in boost::program_options
From: Evan Driscoll (driscoll_at_[hidden])
Date: 2012-06-13 18:12:17

Hi, I'm writing a program which will run other programs (think xargs) 
and I have the following question.

If I am reading the docs right, I get positional arguments by doing 
something like
   1) Make a "normal" argument --arg
   2) Tell it that positional arguments map to --arg

However, if I do this, that means that if someone runs
   my_wrapper  target_program  --arg  a
then the --arg "disappears" because boost::po treats it as an actual 
option and not a positional argument.

I can (mostly) get around this by naming all the fake positional 
arguments something like --ZZZZarg and assuming no one will ever want to 
pass that to another program, but it's a bit unsatisfactory 
conceptually. Is there a better way?

Evan