54baa48139
This command used to compute the collencoding entry like when a completely new collation is created. But for example when copying the "C" collation, this would then result in a collation that has a collencoding entry for the current database encoding rather than -1, thus not making an exact copy. This has probably no practical impact, but making this change keeps the catalog contents neat. Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
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