Re: no-xmailer tests fail under Mac OS

[Jeff King <peff@peff.net>]

On Fri, Dec 05, 2014 at 10:27:40PM -0800, Michael Blume wrote:

> > We have had trouble in the past with "wc -l" output not being strictly
> > portable. I do not recall offhand which systems, but it is a good bet
> > that this is the culprit. Doing:
> >
> >   grep ^X-Mailer: out >mailer &&
> >   test_line_count = $expected mailer
> >
> > should fix it. It might be even nicer to actually compare the x-mailer
> > line we find to an expected output, but that may introduce complications
> > if the value changes with the version or something (you'd have to
> > sanitize the output, and then I do not know that the test is really
> > buying much over just seeing whether it exists).
> >
> > -Peff
> 
> Actually need to drop the '&&', but yes, that works perfectly, thanks =)

Ah, right, we might be looking for 0 sometimes. The right way to do it
without destroying the &&-chaining is:

  { grep ^X-Mailer: out || true } &&
  test_line_count = $expected mailer

-Peff