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Additional unicode primitive functions.

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Introduce unicode_version(), icu_unicode_version(), and
unicode_assigned().

The latter requires introducing a new lookup table for the Unicode
General Category, which is generated along with the other Unicode
lookup tables.

Discussion: https://postgr.es/m/CA+TgmoYzYR-yhU6k1XFCADeyj=Oyz2PkVsa3iKv+keM8wp-F_A@mail.gmail.com
Reviewed-by: Peter Eisentraut
This commit is contained in:
Jeff Davis
2023-11-01 22:47:06 -07:00
parent 7021d3b176
commit a02b37fc08
18 changed files with 4924 additions and 22 deletions
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4
src/test/regress/sql/unicode.sql
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@@ -5,6 +5,10 @@ SELECT getdatabaseencoding() <> 'UTF8' AS skip_test \gset
SELECT U&'\0061\0308bc' <> U&'\00E4bc' COLLATE "C" AS sanity_check;
SELECT unicode_version() IS NOT NULL;
SELECT unicode_assigned(U&'abc');
SELECT unicode_assigned(U&'abc\+10FFFF');
SELECT normalize('');
SELECT normalize(U&'\0061\0308\24D1c') = U&'\00E4\24D1c' COLLATE "C" AS test_default;
SELECT normalize(U&'\0061\0308\24D1c', NFC) = U&'\00E4\24D1c' COLLATE "C" AS test_nfc;