def diff(options, sha1, sha2 = nil)
      try_run { ruby_git.diff(sha1, sha2, options) }
    end
def diff(options, sha1, sha2 = nil)
      try_run { ruby_git.diff(sha1, sha2, options) }
    end
git diff --full-index 'ec037431382e83c3e95d4f2b3d145afbac8ea55d' 'f1ec1aea10986159456846b8a05615b87828d6c6'