From: | Joe Conway <mail(at)joeconway(dot)com> |
---|---|
To: | Daniel Verite <daniel(at)manitou-mail(dot)org>, pgsql-hackers(at)postgresql(dot)org |
Cc: | Jeff Davis <pgsql(at)j-davis(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org> |
Subject: | Re: EBCDIC sorting as a use case for ICU rules |
Date: | 2023-06-21 15:50:15 |
Message-ID: | dc1404b7-b959-a038-13c9-a3c28f91430f@joeconway.com |
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On 6/21/23 09:28, Daniel Verite wrote:
> In the "Order changes in PG16 since ICU introduction" discussion, one
> sub-thread [1] was about having a credible use case for tailoring collations
> with custom rules, a new feature in v16.
>
> At a conference this week I was asked if ICU could be able to
> sort like EBCDIC [2]. It turns out it has been already asked on
> -general a few years ago [3] with no satisfactory answer at the time ,
> and that it can be implemented with rules in v16.
Oh, very cool! I have seen the requirement for EBCDIC come up multiple
times over the years.
<snip>
> Maybe this example could be added to the documentation except for
> the problem that the rule is very long and dollar-quoting cannot be split
> into several lines. Literals enclosed by single quotes can be split that
> way, but would require escaping the single quotes in the rule, which
> would lead to scary-looking over-quoted contents.
>
> I'm open to suggestions on whether this EBCDIC example is worth being in the
> doc in some form or putting this in the wiki would be good enough.
I would definitely favor adding to the docs, but no idea how to deal
with the length issue.
--
Joe Conway
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
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