prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  greedy completer bug in terminal console
  i'm back from finishing my thesis and i'm awed by the massive progress over the last few months. i'm particularly fond of the terminal 2-process frontend, which is super-useful to me. alas the greedy completer is not working properly in this mode. if i start a console session with greedy on, and then run
  
  ``` python
  x = [0, 1, 2]
  x[0].im<TAB>
  ```
  
  it will autocomplete `imag`, but the next line will be
  
  ``` python
  x[0]x[0].imag
  ```
  
  which is obviously not right. this problem (rightfully) does not occur in the 1-process terminal or the qtconsole mode.
  
  i remember this being an issue before in previous versions of ipython, but with the new structure i cannot see yet where this bug arises and how to solve it. best to ask an expert...
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `IPython/terminal/console/completer.py`
  Content:
  ```
  1 """Adapt readline completer interface to make ZMQ request.
  2 """
  3 # -*- coding: utf-8 -*-
  4 import readline
  5 try:
  6     from queue import Empty  # Py 3
  7 except ImportError:
  8     from Queue import Empty  # Py 2
  9 
  10 from IPython.config import Configurable
  11 from IPython.utils.traitlets import Float
  12 
  13 class ZMQCompleter(Configurable):
  14     """Client-side completion machinery.
  15 
  16     How it works: self.complete will be called multiple times, with
  17     state=0,1,2,... When state=0 it should compute ALL the completion matches,
  18     and then return them for each value of state."""
  19 
  20     timeout = Float(5.0, config=True, help='timeout before completion abort')
  21     
  22     def __init__(self, shell, client, config=None):
  23         super(ZMQCompleter,self).__init__(config=config)
  24 
  25         self.shell = shell
  26         self.client =  client
  27         self.matches = []
  28         
  29     def complete_request(self,text):
  30         line = readline.get_line_buffer()
  31         cursor_pos = readline.get_endidx()
  32         
  33         # send completion request to kernel
  34         # Give the kernel up to 0.5s to respond
  35         msg_id = self.client.shell_channel.complete(text=text, line=line,
  36                                                         cursor_pos=cursor_pos)
  37         
  38         msg = self.client.shell_channel.get_msg(timeout=self.timeout)
  39         if msg['parent_header']['msg_id'] == msg_id:
  40             return msg["content"]["matches"]
  41         return []
  42     
  43     def rlcomplete(self, text, state):
  44         if state == 0:
  45             try:
  46                 self.matches = self.complete_request(text)
  47             except Empty:
  48                 #print('WARNING: Kernel timeout on tab completion.')
  49                 pass
  50         
  51         try:
  52             return self.matches[state]
  53         except IndexError:
  54             return None
  55     
  56     def complete(self, text, line, cursor_pos=None):
  57         return self.rlcomplete(text, 0)
  58
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/IPython/terminal/console/completer.py b/IPython/terminal/console/completer.py
  --- a/IPython/terminal/console/completer.py
  +++ b/IPython/terminal/console/completer.py
  @@ -8,9 +8,10 @@
       from Queue import Empty  # Py 2
   
   from IPython.config import Configurable
  +from IPython.core.completer import IPCompleter
   from IPython.utils.traitlets import Float
   
  -class ZMQCompleter(Configurable):
  +class ZMQCompleter(IPCompleter):
       """Client-side completion machinery.
   
       How it works: self.complete will be called multiple times, with
  
verification_info: {"golden_diff": "diff --git a/IPython/terminal/console/completer.py b/IPython/terminal/console/completer.py\n--- a/IPython/terminal/console/completer.py\n+++ b/IPython/terminal/console/completer.py\n@@ -8,9 +8,10 @@\n     from Queue import Empty  # Py 2\n \n from IPython.config import Configurable\n+from IPython.core.completer import IPCompleter\n from IPython.utils.traitlets import Float\n \n-class ZMQCompleter(Configurable):\n+class ZMQCompleter(IPCompleter):\n     \"\"\"Client-side completion machinery.\n \n     How it works: self.complete will be called multiple times, with\n", "issue": "greedy completer bug in terminal console\ni'm back from finishing my thesis and i'm awed by the massive progress over the last few months. i'm particularly fond of the terminal 2-process frontend, which is super-useful to me. alas the greedy completer is not working properly in this mode. if i start a console session with greedy on, and then run\n\n``` python\nx = [0, 1, 2]\nx[0].im<TAB>\n```\n\nit will autocomplete `imag`, but the next line will be\n\n``` python\nx[0]x[0].imag\n```\n\nwhich is obviously not right. this problem (rightfully) does not occur in the 1-process terminal or the qtconsole mode.\n\ni remember this being an issue before in previous versions of ipython, but with the new structure i cannot see yet where this bug arises and how to solve it. best to ask an expert...\n\n", "before_files": [{"content": "\"\"\"Adapt readline completer interface to make ZMQ request.\n\"\"\"\n# -*- coding: utf-8 -*-\nimport readline\ntry:\n    from queue import Empty  # Py 3\nexcept ImportError:\n    from Queue import Empty  # Py 2\n\nfrom IPython.config import Configurable\nfrom IPython.utils.traitlets import Float\n\nclass ZMQCompleter(Configurable):\n    \"\"\"Client-side completion machinery.\n\n    How it works: self.complete will be called multiple times, with\n    state=0,1,2,... When state=0 it should compute ALL the completion matches,\n    and then return them for each value of state.\"\"\"\n\n    timeout = Float(5.0, config=True, help='timeout before completion abort')\n    \n    def __init__(self, shell, client, config=None):\n        super(ZMQCompleter,self).__init__(config=config)\n\n        self.shell = shell\n        self.client =  client\n        self.matches = []\n        \n    def complete_request(self,text):\n        line = readline.get_line_buffer()\n        cursor_pos = readline.get_endidx()\n        \n        # send completion request to kernel\n        # Give the kernel up to 0.5s to respond\n        msg_id = self.client.shell_channel.complete(text=text, line=line,\n                                                        cursor_pos=cursor_pos)\n        \n        msg = self.client.shell_channel.get_msg(timeout=self.timeout)\n        if msg['parent_header']['msg_id'] == msg_id:\n            return msg[\"content\"][\"matches\"]\n        return []\n    \n    def rlcomplete(self, text, state):\n        if state == 0:\n            try:\n                self.matches = self.complete_request(text)\n            except Empty:\n                #print('WARNING: Kernel timeout on tab completion.')\n                pass\n        \n        try:\n            return self.matches[state]\n        except IndexError:\n            return None\n    \n    def complete(self, text, line, cursor_pos=None):\n        return self.rlcomplete(text, 0)\n", "path": "IPython/terminal/console/completer.py"}], "after_files": [{"content": "\"\"\"Adapt readline completer interface to make ZMQ request.\n\"\"\"\n# -*- coding: utf-8 -*-\nimport readline\ntry:\n    from queue import Empty  # Py 3\nexcept ImportError:\n    from Queue import Empty  # Py 2\n\nfrom IPython.config import Configurable\nfrom IPython.core.completer import IPCompleter\nfrom IPython.utils.traitlets import Float\n\nclass ZMQCompleter(IPCompleter):\n    \"\"\"Client-side completion machinery.\n\n    How it works: self.complete will be called multiple times, with\n    state=0,1,2,... When state=0 it should compute ALL the completion matches,\n    and then return them for each value of state.\"\"\"\n\n    timeout = Float(5.0, config=True, help='timeout before completion abort')\n    \n    def __init__(self, shell, client, config=None):\n        super(ZMQCompleter,self).__init__(config=config)\n\n        self.shell = shell\n        self.client =  client\n        self.matches = []\n        \n    def complete_request(self,text):\n        line = readline.get_line_buffer()\n        cursor_pos = readline.get_endidx()\n        \n        # send completion request to kernel\n        # Give the kernel up to 0.5s to respond\n        msg_id = self.client.shell_channel.complete(text=text, line=line,\n                                                        cursor_pos=cursor_pos)\n        \n        msg = self.client.shell_channel.get_msg(timeout=self.timeout)\n        if msg['parent_header']['msg_id'] == msg_id:\n            return msg[\"content\"][\"matches\"]\n        return []\n    \n    def rlcomplete(self, text, state):\n        if state == 0:\n            try:\n                self.matches = self.complete_request(text)\n            except Empty:\n                #print('WARNING: Kernel timeout on tab completion.')\n                pass\n        \n        try:\n            return self.matches[state]\n        except IndexError:\n            return None\n    \n    def complete(self, text, line, cursor_pos=None):\n        return self.rlcomplete(text, 0)\n", "path": "IPython/terminal/console/completer.py"}]}