pgbench tests vs Windows

In commit ed8a7c6fcf9 we added some extra tests to pgbench, including
this snippet:


    \setshell two\
      expr \
        1 + :one

Unfortunately, this isn't portable, as I've just discovered at the cost
of quite a bit of time. In particular, you can't assume expr is present
and in the path on Windows. The Windows equivalent would be something like:


    \setshell two\
      @set /a c = 1 + :one  && echo %c%


I propose to prepare a patch along these lines. Alternatively we could
just drop it - I don't think the test matters all that hugely.


cheers


andrew


-- 
Andrew Dunstan                https://www.2ndQuadrant.com
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