Process exit code

[lynnux]

Then gnu diff tool will return 1 if there has different, but xmldiff seems always return 0 except that encounter error like tag mismattch.

[regebro]

Hmm, I haven't thought about using it to test if there is a difference. Just to generate a diff.

As a workaround you can just check if it outputs anything. Adding a --check parameter that behaves like you want makes sense.

[Glamhoth]

I added such a parameter in #98.

[regebro]

Thanks for all the help @Glamhoth !