Re: Add uuid_to_base32hex() and base32hex_to_uuid() built-in functions

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I think we should update the documentation in the uuid section about
casting data between bytea and uuid. For references, we have a similar
description for bytea and integer[1].

Greetings!
I briefly tested the patched version of v3. The implemented 
functionality works correctly.

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You can also add a case with the error from v3-0002 
"invalid base32hex end sequence" to the tests :

+        ereport(ERROR,
+                (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+                 errmsg("invalid base32hex end sequence"),
+                 errhint("Input data has non-zero padding bits.")));

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I agree with Masahiko Sawada; information about conversions
should be added to the documentation.

-- 
Best regards,
Ilya Cherdakov, PostgresPro