Doc: fix mistaken reference to "PG_ARGNULL_xxx()" macro.
authorTom Lane <[email protected]>
Fri, 13 Mar 2020 16:49:10 +0000 (12:49 -0400)
committerTom Lane <[email protected]>
Fri, 13 Mar 2020 16:49:10 +0000 (12:49 -0400)
commitdbf95c843a3d66cf9a692f5937a1bec4f2261035
treef88609b6c0f7654fa8082870b65d163ab89751eb
parent340de72780e4eb769d5cf052b03084808bac476a
Doc: fix mistaken reference to "PG_ARGNULL_xxx()" macro.

This should of course be just "PG_ARGISNULL()".

Also reorder a couple of paras to make the discussion of PG_ARGISNULL
less disjointed.

Back-patch to v10 where the error was introduced.

Laurenz Albe and Tom Lane, per an anonymous docs comment

Discussion: https://postgr.es/m/158399487096.5708.10696365251766477013@wrigleys.postgresql.org
doc/src/sgml/xfunc.sgml