If you work with a lot of open source projects, you may find a need to modify a GitHub Pull Request before merging to the master branch. This may be because you need to rebase, fix a failing test, or resolve a merge conflict caused by an upstream change. If you...

If you have ever written a Ruby application that interacts with git, you are probably already aware of the pains of testing such behavior. As if checking if git is installed at the proper version and catching all the crazy typos was not enough, git's algorithm'...