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Re: Order changes in PG16 since ICU introduction

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>, Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Cc: Sandro Santilli <strk@kbt.io>, Tom Lane <tgl@sss.pgh.pa.us>, Regina Obe <lr@pcorp.us>, pgsql-hackers@lists.postgresql.org
Date: 2023-05-09T15:09:29Z
Lists: pgsql-hackers 
On Tue, 2023-05-09 at 10:25 +0200, Alvaro Herrera wrote:
> I agree with removing these in v16, since they are going to become
> more
> meaningless and confusing.

Agreed, but it would be nice to have an alternative that does the right
thing.

It's awkward for a user to read pg_database.datlocprovider, then
depending on that, either look in datcollate or daticulocale. (It's
awkward in the code, too.)

Maybe some built-in function that returns a tuple of the default
provider, the locale, and the version? Or should we also output the
ctype somehow (which affects the results of upper()/lower())?

Regards,
	Jeff Davis

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Introduce "builtin" collation provider.

  2. ICU: do not convert locale 'C' to 'en-US-u-va-posix'.

  3. initdb: change default --locale-provider back to libc.

  4. CREATE DATABASE: make LOCALE apply to all collation providers.

  5. Remove read-only server settings lc_collate and lc_ctype

  6. ICU: use uloc_getDefault() for initdb.

  7. Doc fixes for commit 1e16af8ab5.

  8. Doc: fix some rendering problems in the PDF docs build.

  9. Doc improvements for language tags and custom ICU collations.

  10. ICU: check for U_STRING_NOT_TERMINATED_WARNING.

  11. Reduce icu_validation_level default to WARNING.

  12. Revert "ICU: do not convert locale 'C' to 'en-US-u-va-posix'."

  13. Fix initdb --no-locale.

  14. Avoid character classification in regex escape parsing.