Andrew Dunstan <andrew@dunslane.net> writes:
> I'd like to see pg_dump use this mechanism for quoting, at least for
> function bodies. I guess it could retrieve the text and then keep
> generating delimiters until it found one that didn't occur inside the
> text.
Right, that was what I had in mind.
> Maybe for that purpose we could allow underscores as well as
> letters - I don't think that should introduce any extra ambiguities.
> Alternatively, or as well, maybe leading and trailing digits could be
> disallowed, but embedded digits could be allowed. IOW let's be as
> liberal as possible without breaking things.
<shrug> I'd prefer to keep the rules as simple as possible. No
particular objection to underscores, but allowing digits in only some
places seems confusing.
regards, tom lane