Peter Eisentraut <peter_e@gmx.net> writes:
> Tom Lane wrote:
>> Well, for example pg_catalog.xmlconcat(...) will behave differently if
>> we make this change.
> Uh, because there is no pg_catalog.xmlconcat() in 8.3. Why is that
> relevant?
My point is it's a user-visible change --- maybe a subtle one, but still
a change that in principle could break some app somewhere --- and no
good reason has been put forward for making it.
regards, tom lane