On 9/30/17 15:28, Tom Lane wrote:
> Now, it may still be worthwhile to argue about whether canonicalization
> will help the other component of the problem, which is whether you can
> dump and reload CREATE COLLATION commands into a new ICU version and
> expect to get more-or-less-the-same behavior as before.

Arguably, you don't always want that.  Maybe you selected a locale name
like 'en-NEWCOUNTRY', and in old ICU versions you want that to fall back
to default 'en' behavior and in newer you get the updated custom behavior.

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

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