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Allow tailoring of ICU locales with custom rules

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This exposes the ICU facility to add custom collation rules to a
standard collation.

New options are added to CREATE COLLATION, CREATE DATABASE, createdb,
and initdb to set the rules.

Reviewed-by: Laurenz Albe <laurenz.albe@cybertec.at>
Reviewed-by: Daniel Verite <daniel@manitou-mail.org>
Discussion: https://www.postgresql.org/message-id/flat/821c71a4-6ef0-d366-9acf-bb8e367f739f@enterprisedb.com
This commit is contained in:
Peter Eisentraut
2023-03-08 16:35:42 +01:00
parent b1534ed99d
commit 30a53b7929
22 changed files with 380 additions and 59 deletions
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src/include/utils/pg_locale.h
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@@ -95,6 +95,7 @@ typedef struct pg_locale_struct *pg_locale_t;
extern PGDLLIMPORT struct pg_locale_struct default_locale;
extern void make_icu_collator(const char *iculocstr,
const char *icurules,
struct pg_locale_struct *resultp);
extern bool pg_locale_deterministic(pg_locale_t locale);