Re: Minor point about contrib/xml2 functions "IMMUTABLE" marking

Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > Well, should be marked as VOLATILE?  A web lookup?
> 
> Yes.  Its value is determined by factors outside the database, so
> it has to be categorized as volatile.

OK, done.

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