[docs] [issue15258] argparse documentation: Improve optparse section regarding allow_interspersed_args

Glenn Linderman <v+python@g.nevcal.com> added the comment: See also issue 14191, which describes the problems of trying to make argparse achieve the goal of the default optparse handling of allow_interspersed_args ! The documentation for that branch of the feature is also seriously incomplete, and the workaround is more than a single line. ---------- nosy: +v+python _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue15258> _______________________________________