Re: @ versus ~, redux

> I can see various things that we might consider doing:
> 
> 1. Just flip the names of the two operators added by the GIN patch.
> 
> 2. #1 plus flip the names of the various contrib operators that are
>    out of sync (Michael Fuhr points out that contrib/intarray is out
>    of step too ... are there others?).
> 
> 3. Leave the existing op names as-is in core and contrib, but consider
>    them deprecated and add new ops with consistently-chosen names.
>    (The new ops introduced by GIN should only exist with the new names.)
> 
> #1 isn't doing anything towards solving the underlying problem.
> #2 has got obvious backwards-compatibility issues for contrib users.

+1 on #2 with the following caveat. When we publish the release notes, 
we have a specific section that says:

Compatibility changes from previous releases. Which IMHO should be there 
anyway as there are always compatibility issues from release to release.

Joshua D. Drake

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