title: Tkinter text widget : pressing <Return> key goes to line
body: <p>I'm trying to make a chat with tkinter using a widget text with the Enter key binded like this :</p>
  
  <pre><code>self.msg.bind('&lt;Return&gt;', self.chatReturn)
  
  def chatReturn(self, evt):          
        self.chat.config(state = NORMAL)
        self.chat.insert(END, self.msg.get(1.0, END))
        self.chat.config(state = DISABLED)
        self.msg.delete(1.0, END)
  </code></pre>
  
  <p>But after chatReturn() being called, the "Return" key makes the cursor go to the second line...</p>
  
  <p>Can I disable the normal state of the "Return" key from going to the next line ? </p>