Horton

Re: Built-in CTYPE provider

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Noah Misch <noah@leadboat.com>, Tom Lane <tgl@sss.pgh.pa.us>
Cc: Peter Eisentraut <peter@eisentraut.org>, Daniel Verite <daniel@manitou-mail.org>, Robert Haas <robertmhaas@gmail.com>, Jeremy Schneider <schneider@ardentperf.com>, pgsql-hackers@postgresql.org
Date: 2024-07-09T23:20:12Z
Lists: pgsql-hackers 
On Mon, 2024-07-08 at 18:05 -0700, Noah Misch wrote:
> I'm thinking about these
> aggravating factors for $SUBJECT:

This is still marked as an open item for 17, but you've already
acknowledged[1] that no code changes are necessary in version 17.
Upgrades of Unicode take an active step from a committer, so it's not a
pressing problem for 18, either.

The idea that you're arguing against is "stability within a PG major
version". There's no new discovery here: it was listed under the
heading of "Benefits" near the top of my initial proposal[2], and known
to all reviewers.

This is not an Open Item for 17, and new policy discussions should not
happen deep in this subthread. Please resolve the Open Item, and feel
free to start a thread about policy changes in 18.

Regards,
	Jeff Davis

[1]
https://www.postgresql.org/message-id/20240701230352.2c.nmisch@google.com
[2]
https://www.postgresql.org/message-id/ff4c2f2f9c8fc7ca27c1c24ae37ecaeaeaff6b53.camel@j-davis.com

Commits

  1. Support PG_UNICODE_FAST locale in the builtin collation provider.

  2. Support Unicode full case mapping and conversion.

  3. Fix test failures when language environment is not UTF-8.

  4. Add unicode_strtitle() for Unicode Default Case Conversion.

  5. Use version for builtin collations.

  6. Fix convert_case(), introduced in 5c40364dd6.

  7. Inline basic UTF-8 functions.

  8. Support C.UTF-8 locale in the new builtin collation provider.

  9. Fix another warning, introduced by 846311051e.

  10. Address more review comments on commit 2d819a08a1.

  11. Fix unreachable code warning from commit 2d819a08a1.

  12. Introduce "builtin" collation provider.

  13. Catalog changes preparing for builtin collation provider.

  14. Unicode case mapping tables and functions.

  15. Add Unicode property tables.

  16. Documentation update for Standard Collations.

  17. Cleanup for unicode-update build target and test.

  18. Shrink Unicode category table.

  19. Make some error strings more generic

  20. pg_upgrade: copy locale and encoding information to new cluster.

  21. Update Unicode data to Unicode 15.0.0

  22. Create a new type category for "internal use" types.