[PATCH 1 of 6] extensions: import the exthelper class from evolve ff799015d62e

[Yuya Nishihara]

On Fri, 30 Nov 2018 23:10:55 -0500, Matt Harbison wrote:
> # HG changeset patch
> # User Matt Harbison <matt_harbison at yahoo.com>
> # Date 1543121473 18000
> #      Sat Nov 24 23:51:13 2018 -0500
> # Node ID d5a04a8016a270dce028bddb2483509e0429f113
> # Parent  33d30fb1e4ae52a283ef487ccf5dfbe59b8a5a68
> extensions: import the exthelper class from evolve ff799015d62e

> I'm not sure what licensing info to put in place, since it wasn't available on
> the original copy.

Boris?

> +    def configitem(self, section, config, default=configitems.dynamicdefault):
> +        """Register a config item.
> +        """
> +        self._configitem(section, config, default=default)

What's the point of reinventing the registrar functions?

I understand it will be useful to provide decorators for various setup
hooks, but we have registrar API for table registrations. And less coupled
abstraction is generally better.