The following bug has been logged on the website:
Bug reference: 14701
Logged by: Neil Anderson
Email address: neil(at)postgrescompare(dot)com
PostgreSQL version: 10beta1
Operating system: macOS
Description:
Hi,
Just installed the beta of v10 on my Mac and attempted to dump the contents
of pg_catalog as follows.
./bin/pg_dump -U postgres -n pg_catalog
pg_dump: unrecognized collation provider: d
Seems to be new to v10 since I could do the same successfully on v9.6.3 as
of yesterday.
Thanks,
Neil
Neil Anderson
neil(at)postgrescompare(dot)com
https://www.postgrescompare.com