Andrew Gierth <andrew@tao11.riddles.org.uk> writes:
> Looking at it more closely, this is likely to be fallout from the
> plpgsql lexer/parser changes; it probably worked before only because
> plpgsql was doing its own thing rather than using the main lexer.
Hmm .. yeah, words that are reserved according to the main grammar
could have worked as plpgsql variable names before, since they always
got replaced with "$n" before the main grammar saw them.
regards, tom lane