pgsql: psql: complain if pg_dump custom-format is detected

psql: complain if pg_dump custom-format is detected

Apparently, this is a very common mistake for users to make; it is
better to have it fail reasonably rather than throw potentially a large
number of errors.  Since we have a magic string at the start of the
file, we can detect the case easily and there's no other possible useful
behavior anyway.

Author: Craig Ringer

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/3c2aa0c6f27fc921c881b3bf0b6df03fdf557304

Modified Files
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src/bin/psql/mainloop.c |   12 ++++++++++++
1 file changed, 12 insertions(+)