From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
---|---|
To: | Philip Warner <pjw(at)rhyme(dot)com(dot)au> |
Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: dollar-quoting in psql and in general |
Date: | 2004-08-12 03:53:12 |
Message-ID: | 411AE9A8.4000402@dunslane.net |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Philip Warner wrote:
> At 01:07 PM 12/08/2004, Andrew Dunstan wrote:
>
>> \ is not magical inside dollar quotes,
>
>
> Sorry, I was confused by the manual: the paragraph that starts
> "C-style backslash escapes are also available..." is right after the
> paragraphs on dollar-quoting.
>
> The section on dollar-quoting is also not explicit about valid tags,
> "zero or more characters" is all I can see. Can you give me a
> definitive answer as to what is valid? AFAICT, must be
> [A-Z,a-z,0-9,_]*, with non-numeric start. Is that right?
>
>
Don't forget the high-bit chars too. pgsqlscan.l says:
dolq_start [A-Za-z\200-\377_]
dolq_cont [A-Za-z\200-\377_0-9]
dolqdelim \$({dolq_start}{dolq_cont}*)?\$
The scanner files for plpgsql and the backend have equivalent specs, so
this is definitive.
cheers
andrew
From | Date | Subject | |
---|---|---|---|
Next Message | Philip Warner | 2004-08-12 04:32:46 | Re: pg_dump 'die_on_errors' |
Previous Message | Tom Lane | 2004-08-12 03:49:59 | Re: dollar-quoting in psql and in general |