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Re: [HACKERS] Patch to address concerns about ICU collcollatestability in v10 (Was: CREATE COLLATION does not sanitize ICU's BCP 47language tags. Should it?) - Mailing list pgsql-hackers

From Peter Eisentraut
Subject Re: [HACKERS] Patch to address concerns about ICU collcollatestability in v10 (Was: CREATE COLLATION does not sanitize ICU's BCP 47language tags. Should it?)
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Msg-id e3fbdaa7-d45c-6c8e-191f-993798ba4d69@2ndquadrant.com
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In response to [HACKERS] Patch to address concerns about ICU collcollate stability in v10(Was: CREATE COLLATION does not sanitize ICU's BCP 47 language tags. Should it?)  (Peter Geoghegan <pg@bowt.ie>)
Responses Re: [HACKERS] Patch to address concerns about ICU collcollatestability in v10 (Was: CREATE COLLATION does not sanitize ICU's BCP 47language tags. Should it?)
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On 9/25/17 00:24, Peter Geoghegan wrote:
> * Creates root collation as root-x-icu (collcollate "root"), not
> und-x-icu. "und" means undefined language.

I'm curious about this point.  "und" is defined in BCP 47.  I don't see
"root" defined anywhere.  ICU converts the root collation to "und",
AFAIK, so it seems to agree with the current naming.

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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