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Re: ICU for global collation

Michael Paquier <michael@paquier.xyz>

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From: Michael Paquier <michael@paquier.xyz>
To: Marina Polyakova <m.polyakova@postgrespro.ru>
Cc: pgsql-hackers@postgresql.org, Kyotaro Horiguchi <horikyota.ntt@gmail.com>, pryzby@telsasoft.com, rjuju123@gmail.com, daniel@manitou-mail.org, AndrewBille@gmail.com, peter.eisentraut@enterprisedb.com
Date: 2022-11-01T07:03:11Z
Lists: pgsql-hackers 
On Fri, Oct 21, 2022 at 05:32:38PM +0300, Marina Polyakova wrote:
> Hello!
> 
> I discovered an interesting behaviour during installcheck runs when the
> cluster was initialized with ICU locale provider:
> 
> $ initdb --locale-provider icu --icu-locale en-US -D data &&
> 2) The option --no-locale in pg_regress is described as "use C locale" [2].
> But in this case the created databases actually use the ICU locale provider
> with the ICU cluster locale from template0 (see
> diff_check_backend_used_provider.patch):
> 
> $ make NO_LOCALE=1 installcheck

Yes, this looks wrong on the ground on what -no-locale is expected to
do, aka use a C locale.  Peter?
--
Michael

Commits

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

  1. Add CHECK_FOR_INTERRUPTS while restoring changes during decoding.

  2. Improve ICU option handling in CREATE DATABASE

  3. Don't allow creation of database with ICU locale with unsupported encoding

  4. Make locale option behavior more consistent

  5. pg_dump: Dump colliculocale

  6. Remove further unwanted linker flags from perl_embed_ldflags

  7. Doc: document possible need to raise kernel's somaxconn limit.

  8. Reduce warnings with -Wshadow=compatible-local builds

  9. Remove redundant spaces in _outA_Expr() output

  10. Fix outdated --help message for postgres -f

  11. pg_upgrade: Fix version comparison for global ICU support

  12. Silence -Wmaybe-uninitialized compiler warning in dbcommands.c.

  13. Add option to use ICU as global locale provider

  14. DefineCollation() code cleanup

  15. Change collate and ctype fields to type text

  16. Call pg_newlocale_from_collation() also with default collation

  17. Use libc version as a collation version on glibc systems.

  18. Silence -Wmaybe-uninitialized compiler warnings in dbcommands.c.

  19. Make LC_COLLATE and LC_CTYPE database-level settings. Collation and