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()

```

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

{"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"}]}