These worked as-is until around 7.0, but fail in newer versions because there are more operators named "#". Besides it's a bit inconsistent that only two of the examples on this page lack type names on their constants.
5a7bae0 Doc: fix examples of # operators so they actually work.
doc/src/sgml/func.sgml | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)