From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
cc: Andrew Dunstan <andrew@dunslane.net>, Amul Sul <sulamul@gmail.com>,
        Andres Freund <andres@anarazel.de>,
        Alexander Korotkov <aekorotkov@gmail.com>,
        "David G. Johnston" <david.g.johnston@gmail.com>,
        Corey Huinker <corey.huinker@gmail.com>,
        Alvaro Herrera <alvherre@alvh.no-ip.org>,
        Joe Conway <mail@joeconway.com>,
        Nikita Glukhov <n.gluhov@postgrespro.ru>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Error-safe user functions
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Comments: In-reply-to Robert Haas <robertmhaas@gmail.com>
	message dated "Mon, 19 Dec 2022 13:25:19 -0500"
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Date: Mon, 19 Dec 2022 16:27:00 -0500
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Robert Haas <robertmhaas@gmail.com> writes:
> On Mon, Dec 19, 2022 at 11:44 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> ... I guess you didn't read my remarks upthread about regtypein.
>> I do not want to try to make gram.y+scan.l non-error-throwing.

> Huh, for some reason I'm not seeing an email about that. Do you have a link?

In [1] I wrote

>>> I'm a little concerned about the cost-benefit of fixing the reg* types.
>>> The ones that accept type names actually use the core grammar to parse
>>> those.  Now, we probably could fix the grammar to be non-throwing, but
>>> it'd be very invasive and I'm not sure about the performance impact.
>>> It might be best to content ourselves with soft reporting of lookup
>>> failures, as opposed to syntax problems.

			regards, tom lane

[1] https://www.postgresql.org/message-id/1863335.1670783397%40sss.pgh.pa.us