Re: Boolean operators without commutators vs. ALL/ANY

Peter Eisentraut <peter_e@gmx.net> writes:
> On tis, 2011-06-14 at 15:38 +0200, Florian Pflug wrote:
>> BTW, there's actually precedent for a commutator of "~", namely
>> "@". Some of the geometric types (polygon, box, circle, point,
>> path) use "~" as a commutator for "@" (which stands for "contains"). 

> I wouldn't have a problem with naming the reverse operator "@".

We deprecated those names for the geometric operators largely because
there wasn't any visual correlation between the commutator pairs.
I can't see introducing the same pairing for regex operators if we
already decided the geometric case was a bad idea.
        regards, tom lane