code: def fix_e112(self, result):
          
          line_index = result['line'] - 1
          target = self.source[line_index]
  
          if not target.lstrip().startswith('#'):
              # Don't screw with invalid syntax.
              return []
  
          self.source[line_index] = self.indent_word + target
docs: Fix under-indented comments.