Re: Rules going away

On 09/28/2011 08:34 AM, Tom Lane wrote:
> Andrew Sullivan <ajs@crankycanuck.ca> writes:
>> On Wed, Sep 28, 2011 at 06:20:04AM -0700, David Fetter wrote:
>>> There's an even better reason not to use rules: they're going away in
>>> a not too distant version of PostgreSQL.
>> Really?  How?  I thought views were done using rules under the hood?
>> Also, it'd be awfully nice if, in case rules are going away, the
>> documentation actually said prominently in the rules section, "Rules
>> are deprecated and are planned to be removed at some point in the
>> future."  Right now, anyone coming to Postgres for the first time
>> could easily understand the manual to say that Postgres has this cool
>> feature on which they can rely.
> I think the true state of affairs is this: rules have a lot of
> surprising behaviors, and if we could think of something that works more
> straightforwardly, we'd love to replace them.  But I think we'd have to
> have the "something" in place before we consider deprecating rules.
> At the moment we don't even have a glimmer of a design, so David's
> statement is many years premature.
>
>             regards, tom lane
>
Yoda: "Damned by faint praise, these rules are"

Would this future something more likely be a totally different concept
or a re-implementation?

Is there a list of "gotchas" w.r.t. rules?