parameters: (self, e)
docstring: Kill the word behind point. Word boundaries are the same as
          backward-word.
docstring_summary: Kill the word behind point. Word boundaries are the same as
          backward-word.
docstring_tokens: Kill the word behind point . Word boundaries are the same as backward - word .
function: def backward_kill_word(self, e):  # (M-DEL)
          '''Kill the word behind point. Word boundaries are the same as
          backward-word. '''
          self.l_buffer.backward_kill_word()
function_tokens: def backward_kill_word ( self , e ) : # (M-DEL) self . l_buffer . backward_kill_word ( )