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
Branch
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REL_12_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/f393fb20a1543a3e08597968ff6017d9d399513d
Modified Files
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doc/src/sgml/xfunc.sgml | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)