[PATCH 1 of 2 STABLE] tests: demonstrate `hg show` mapping to showconfig

[Yuya Nishihara]

On Fri, 28 Apr 2017 10:30:00 -0700, Gregory Szorc wrote:
> On Fri, Apr 28, 2017 at 6:04 AM, Yuya Nishihara <yuya at tcha.org> wrote:
> > On Thu, 27 Apr 2017 16:11:34 -0700, Gregory Szorc wrote:
> > > This series is a "pick your poison" if you are a reviewer. I'm partial to
> > > the more complex one adding an argument to @command. But it may not be
> > > appropriate for stable. So a hacky fallback is provided as an
> > alternative.
> >
> > I don't think either of them is good for stable. show is highly
> > experimental
> > extension, right?
> >
> > That said, the safest hack I can think of is adding null show command to
> > the default command table, and wrap it by the show extension.
> >
> 
> Oh, I forgot to mention in the commit message that this was the first thing
> I did. It resulted in "show" appearing in help output, debugcomplete, etc.
> Unless I was doing it wrong, I thought this was worse than hacking alias
> resolution due to having user-visible side-effects.

Have you tried a command with no docstring (or "(EXPERIMENTAL)") ? I think
the help issue can be addressed by that.