Horton

Re: Built-in CTYPE provider

Peter Eisentraut <peter@eisentraut.org>

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From: Peter Eisentraut <peter@eisentraut.org>
To: Jeff Davis <pgsql@j-davis.com>, Daniel Verite <daniel@manitou-mail.org>
Cc: Robert Haas <robertmhaas@gmail.com>, Jeremy Schneider <schneider@ardentperf.com>, pgsql-hackers@postgresql.org
Date: 2024-03-14T14:38:53Z
Lists: pgsql-hackers 
On 14.03.24 09:08, Jeff Davis wrote:
> 0001 (the C.UTF-8 locale) is also close. Considering that most of the
> infrastructure is already in place, that's not a large patch. You many
> have some comments about the way I'm canonicalizing and validating in
> initdb -- that could be cleaner, but it feels like I should refactor
> the surrounding code separately first.

If have tested this against the libc locale C.utf8 that was available on 
the OS, and the behavior is consistent.

I wonder if we should version the builtin locales too.  We might make a 
mistake and want to change something sometime?

Tiny comments:

* src/bin/scripts/t/020_createdb.pl

The two added tests should have different names that tells them apart
(like the new initdb tests).

* src/include/catalog/pg_collation.dat

Maybe use 'and' instead of '&' in the description.

> 0002 (inlining utf8 functions) is also ready.

Seems ok.

> For 0003 and beyond, I'd like some validation that it's what you had in
> mind.

I'll look into those later.

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.