Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Do you think people are actually doing that, and if they are, wouldn't
> it be obvious how to fix it? Anyone else?
It would probably be good if these two history items:
* Dollar sign ($) is no longer allowed in operator names
* Dollar sign ($) can be a non-first character in identifiers
were mentioned in the "incompatibilities" section.
regards, tom lane