[PATCH] add -e/--extension switch to help command to display extension help text only

[Henri Wiechers]

On Sun, Dec 13, 2009 at 5:15 PM, Martin Geisler <mg at lazybytes.net> wrote:
> I like this, it's something we should have added a while ago. How
> difficult would it be to make 'hg help rebase' print out "use 'hg help
> -e rebase' to see overall help for the extension"? Otherwise I fear that
> people wont discover the extension help.

The code in the help command is a little tricky so I'm going to try to simplify
it first. I'll send an updated version of the patch after that. Please disregard
the current version.

Thanks,
Henri Wiechers