PG Doc comments form <noreply@postgresql.org> writes:
> I am a Postgres newbie, and I find this part of what is generally excellent
> documentation quite confusing. It contains the following disclaimer:
> Note
> PostgreSQL currently does not support multi-character collating elements.
> This information describes possible future behavior.
> I am very skeptical of the idea of documentation describing "possible future
> behavior."
What that means is "we don't implement this, but it's required by POSIX,
so we really ought to get around to it someday".
I have considered the idea of deleting mention of multi-character
collating elements from the preceding paragraph, but then we'd be
left with nothing but a statement that "[.x.]" means the same
thing as "x" inside a bracket expression. Which is weird and
confusing enough that we'd still have to talk about multi-character
collating elements in order to explain why it's like that.
> Furthermore, it appears that this disclaimer has been part of the docs since
> at least version 10, so it's not even clear that this feature is even
> currently being seriously considered for implementation.
Hah! Look a bit further back :-(
regards, tom lane