>> v4, rebase (after pgbench moved to src) and use of the recently added
>> syntax_error function.
>
> v5 which adds a forgotten header declaration for a new function, so as to
> avoid a warning.
While playing around for adding other functions I noticed that with the
parsing rules I set unknown function were detected quite late in the
process, so that the error messages was imprecise.
v6 fixes this by checking function names ealier.
--
Fabien.
