Re: docs: outdated reference to recursive expression evaluation

On 12/8/18, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> John Naylor <jcnaylor(at)gmail(dot)com> writes:
>> In confg.sgml, in the section about max_stack_depth, there's this
>> sentence:
>> "The safety margin is needed because the stack depth is not checked in
>> every routine in the server, but only in key potentially-recursive
>> routines such as expression evaluation."
>
>> Since the change in expression evaluation in v10, there's probably a
>> better example of recursive routines, but I'm not sure what that would
>> be.
>
> We could say "expression compilation" and it'd still be valid. Or just
> drop the last four words altogether. I don't think we want to expend the
> verbiage to be more precise here, since it's only a tangential point.

I'm inclined to agree. If you like, here's a patch to leave out the example.

-John Naylor