How to get around MacPorts assuming that Exit code: 1 is a failure?

[Joshua Root]

On 2014-2-9 12:22 , Eric Gallager wrote:
> I am working on a Portfile from which I want to call the `unifdef`
> command. The manpage for `unifdef` says: "Exit status is 0 if output is
> exact copy of input, 1 if not, 2 if trouble." The whole reason I am
> running `unifdef` is to change the output, so I /want/ it to return 1.
> However, when I put this in my Portfile, it interprets this as a
> failure. Is there any way that I can get around this?

unifdef || [ $? -ne 2 ]