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From: John Baldwin <jhb@freebsd.org>
To: "Simon J. Gerraty" <sjg@juniper.net>
Subject: Re: XML Output: libxo - provide single API to output TXT, XML,
 JSON and HTML
Date: Thu, 14 Aug 2014 14:22:08 -0400
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Cc: Marcel Moolenaar <marcel@freebsd.org>, Phil Shafer <phil@juniper.net>,
 John-Mark Gurney <jmg@funkthat.com>, arch@freebsd.org,
 Poul-Henning Kamp <phk@phk.freebsd.dk>,
 freebsd-arch <freebsd-arch@freebsd.org>,
 Konstantin Belousov <kostikbel@gmail.com>
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On Thursday, August 14, 2014 1:16:47 pm Simon J. Gerraty wrote:
> 
> >My question for people advocating this method: Why not require all =
> >commands
> >that generate this kind of output to support a standard command line =
> >option
> 
> That's basically what we did in Junos, except the -X option currently
> just means output XML.
> That worked fine for the limited number of bsd apps that we frobbed,
> but pretty hard to assert that it could be expanded to all apps.
> 
> Thus I think Phil was looking for a more generic solution.
> 
> I think your suggestion could work fine.
> Since (I think) Phil mentioned libxo being able to check options,
> it should be ok to run an app with an option like:
> 
> --libxo-is-supported
> 
> that's guaranteed to not conflict with any existing option.
> Any app that hasn't been converted will choke and die, any that has will 
> exit happy.
> 
> You could add other --libxo-* options to control output - if environment
> variables are not considered desirable

I vote for this.

-- 
John Baldwin