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aae2a02c9d
Specifically, this makes the workflow pg_dump -Fc -> pg_restore -> file produce correct output for BLOBs when the source database has standard_conforming_strings turned on. It was already okay when that was off, or if pg_restore was told to restore directly into a database. This is a back-port of commit b1732111f233bbb72788e92a627242ec28a85631 of 2009-08-04, with additional changes to emit old-style escaped bytea data instead of hex-style. At the time, we had not heard of anyone encountering the problem in the field, so I judged it not worth the risk of changing back branches. Now we do have a report, from Bosco Rama, so back-patch into 8.2 through 8.4. 9.0 and up are okay already.