[Python-checkins] [Python-Dev] cpython (3.3): Add -b and -X options to python man page.

[Antoine Pitrou]

On Mon, 24 Jun 2013 16:43:15 -0400
"R. David Murray" <rdmurray at bitdance.com> wrote:
> On Mon, 24 Jun 2013 22:14:46 +0200, Maciej Fijalkowski <fijall at gmail.com> wrote:
> > On Sun, Jun 23, 2013 at 6:14 PM, R. David Murray <rdmurray at bitdance.com> wrote:
> > > On Sun, 23 Jun 2013 17:40:13 +0200, Maciej Fijalkowski <fijall at gmail.com> wrote:
> > >> On Thu, Jun 20, 2013 at 3:36 PM, Brett Cannon <brett at python.org> wrote:
> > >> > On Wed, Jun 19, 2013 at 11:20 PM, senthil.kumaran
> > >> > <python-checkins at python.org> wrote:
> > >> >>  .TP
> > >> >> +.BI "\-X " option
> > >> >> +Set implementation specific option.
> > >> >
> > >> >
> > >> > Should probably be "Set the implementation-specific option."
> > >>
> > >> Is there anyone respecting this notation? (I know pypy does not, it
> > >> uses --jit and stuff)
> > >
> > > CPython does.  We introduced it for ourselves, it is up to other
> > > implementations whether or not to use it, or use something else.
> > >
> > > --David
> > 
> > you mean "CPython does not have any implementation-specific options"?
> > I would claim -O behavior should be implementation-specific since it's
> > nonsense in the optimizations sense, but other than that, it does not
> > seem that there is any -X options?
> 
> There is one.  -X faulthandler.  I'm sure others would agree about
> -O, but that long predates -X.
> 
> So, the idea is that -X *can* be used by other implementations for their
> own purposes, but there is certainly no requirement that they do so.
> Our promise is that anything CPython uses it for is something we don't
> expect other implementations to support.

Yes, basically -X is a private namespace for every implementation to
use as it sees fit without fearing of conflicting with a future
cross-implementation option.

Regards

Antoine.