code: def same_diffs(commit1, commit2):
      
      def range_one(commit):
          """A git commit "range" to include only one commit"""
          return '%s^..%s' % (commit, commit)
  
      output = run('range-diff %s %s' % (range_one(commit1), range_one(commit2)))
      lines = output.splitlines()
      for i, line in enumerate(lines, 1):
          if not line.startswith('%s: ' % i):
              break
      return not lines[i:]
docs: Whether those 2 commits have the same change
  
      Run "git range-diff" against 2 commit ranges:
          1. parent of commit1 to commit1
          1. parent of commit2 to commit2
  
      If the two produce the same diff then git will only show header lines
          Header lines are prefixed like "1: ...."
      Otherwise there will be lines after the header lines
          (and those lines will show the difference)