Andrew Dunstan <andrew@dunslane.net> writes:
> Tom Lane wrote:
>> ... But how about
>> 42$foo$
>> This is a syntax error in 7.4, and we propose to redefine it as an
>> integer literal '42' followed by a dollar-quote start symbol.
> The test should not succeed anywhere in the string '42$foo$'.
No, it won't. The problem is that it should, because the backend will
see that as '42' followed by a $foo$ quote start.
> Interacting with lexer states would probably be ... unpleasant. Matching
> a stream oriented lexer with a line oriented CLI would be messy I suspect.
I think it would not be that bad. We'd have to run the lexer on the
command input buffer and see what state it terminates in.
regards, tom lane