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[Roland Goldberg <1676955@xxxxxxxxxxxxxxxxxx>]

Per above, I believe that commenting line 189 of ctelnet.cpp would
accomplish this; the duplication comes when cTelnet::disconnect() raises
the event, and then cTelnet::handle_socket_signal_disconnected() calls
the event when the socket is actually disconnected. If I'm interpreting
the code right.

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https://bugs.launchpad.net/bugs/1676955

Title:
  disconnect() calls a sysDisconnectEvent of it's own

Status in Mudlet:
  New

Bug description:
  Sample Code:

  function doubleEcho()
    cecho("\n<black:yellow>This will echo twice, but only if currently connected to the MUD when disconenct() is called")
  end

  registerAnonymousEventHandler("sysDisconnectionEvent","doubleEcho")

  disconnect()

  
  Explanation:

  sysDisconnectEvent is designed to let you know that the connection to
  the MUD has been terminated. However, regardless of whether there is a
  connection to the MUD, calling the disconnect() function raises
  sysDisconnectEvent. When connected to a MUD, this results in
  sysDisconnectEvent being called twice if you manually run a
  disconnect(). If the MUD disconnects you on the other hand, you only
  get one sysDisconnectEvent, as proper.

  Usually this is no problem. However, sometimes a function that is
  registered to sysDisconnectEvent will have issues if it is run twice.
  Other times you may not want said function to run unless already
  connected to the MUD when disconnect() is called.

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