pgbench - allow backslash continuations in \set expressions - Mailing list pgsql-hackers

Attached patch does what is described in the title, hopefully.
Continuations in other pgbench backslash-commands should be dealt with
elsewhere...

Also attached is a small test script.

While looking at the code, I noticed that newline is \n. Maybe it should
be (\r|\n|\r\n) to allow for MacOS & Windows. I have not changed that for
now.

--
Fabien.