Re: psql \watch 2nd argument: iteration count

On Tue, Mar 14, 2023 at 01:58:59PM +0900, Kyotaro Horiguchi wrote:
> + if (*opt_end)
> + pg_log_error("\\watch: incorrect interval value '%s'", opt);
> + else if (errno == ERANGE)
> + pg_log_error("\\watch: out-of-range interval value '%s'", opt);
> + else
> + pg_log_error("\\watch: interval value '%s' less than zero", opt);
>
> I'm not sure if we need error messages for that resolution and I'm a
> bit happier to have fewer messages to translate:p. Merging the cases
> of ERANGE and negative values might be better. And I think we usually
> refer to unparsable input as "invalid".
>
> if (*opt_end)
> pg_log_error("\\watch: invalid interval value '%s'", opt);
> else
> pg_log_error("\\watch: interval value '%s' out of range", opt);

+1, I don't think it's necessary to complicate these error messages too
much. This code hasn't reported errors for nearly 10 years, and I'm not
aware of any complaints. I ѕtill think we could simplify this to "\watch:
invalid delay interval: %s" and call it a day.

--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com