Add with_filtered_backtrace method to unknown result

[danascheider]

This pull request adds a #with_filtered_backtrace method to Result::Unknown, enabling Cucumber to handle empty scenarios more gracefully. Addresses this issue in Cucumber-Ruby: cucumber/cucumber-ruby#967

[danascheider]

@mattwynne @dg-ratiodata I'm pretty sure this initial Travis build failed because of a hiccup in the Travis environment - I ran the tests locally using that JRuby version and it passed, then it passed when I re-ran the Travis build.

[ghost]

@danascheider Sorry to say, but I think I cannot help that much here. I think, it makes more sense to include @brasmusson and/or @tooky.

I'm more in the role of a contributor for cucumber/cucumber-ruby-core, not maintainer. Not deeply involved into the cucumber (ruby) stuff. But I try to help out with things on a higher level - documentation etc.

[danascheider]

Ah gotcha. Well thanks anyway.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.