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Add unicode_strtitle() for Unicode Default Case Conversion.

Jeff Davis <jdavis@postgresql.org>

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Commit: 46e5441fa536b89c1123f270fdfeeb72c320b901
Author: Jeff Davis <jdavis@postgresql.org>
Date: 2024-03-30T00:35:07Z
Releases: 17.0 
Add unicode_strtitle() for Unicode Default Case Conversion.

This brings the titlecasing implementation for the builtin provider
out of formatting.c and into unicode_case.c, along with
unicode_strlower() and unicode_strupper(). Accepts an arbitrary word
boundary callback.

Simple for now, but can be extended to support the Unicode Default
Case Conversion algorithm with full case mapping.

Discussion: https://postgr.es/m/3bc653b5d562ae9e2838b11cb696816c328a489a.camel@j-davis.com
Reviewed-by: Peter Eisentraut

Files

PathChange+/−
src/backend/utils/adt/formatting.c modified +67 −40
src/common/unicode_case.c modified +68 −8
src/include/common/unicode_case.h modified +5 −0

Discussion