code: def diff_charsToLines(self, diffs, lineArray):
      
      for i in range(len(diffs)):
        text = []
        for char in diffs[i][1]:
          text.append(lineArray[ord(char)])
        diffs[i] = (diffs[i][0], "".join(text))
docs: Rehydrate the text in a diff from a string of line hashes to real lines
      of text.
  
      Args:
        diffs: Array of diff tuples.
        lineArray: Array of unique strings.