Horton

Re: [18] Policy on IMMUTABLE functions and Unicode updates

Jeff Davis <pgsql@j-davis.com>

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From: Jeff Davis <pgsql@j-davis.com>
To: Peter Eisentraut <peter@eisentraut.org>, Laurenz Albe <laurenz.albe@cybertec.at>, pgsql-hackers@postgresql.org
Cc: Daniel Verite <daniel@manitou-mail.org>, Noah Misch <noah@leadboat.com>, Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Jeremy Schneider <schneider@ardentperf.com>
Date: 2024-07-22T15:38:26Z
Lists: pgsql-hackers 
On Mon, 2024-07-22 at 16:26 +0200, Peter Eisentraut wrote:
> Unless I missed something here, all the problem examples involve 
> unassigned code points that were later assigned.

For normalization and case mapping that's right.

For regexes, a character property could change. But that's mostly a
theoretical problem because, at least in my experience, I can't recall
ever seeing an index that would be affected.

Regards,
	Jeff Davis