remove a bunch of unused code

xonsh/completer.py

@@ -1,25 +1,9 @@
 # -*- coding: utf-8 -*-
 """A (tab-)completer for xonsh."""
-import os
-import re
-import ast
-import sys
-import shlex
-import pickle
-import inspect
 import builtins
-import importlib
-import subprocess
 
-from pathlib import Path
 from collections import Sequence
 
-from xonsh.built_ins import iglobpath, expand_path
-from xonsh.platform import ON_WINDOWS
-from xonsh.tools import (subexpr_from_unbalanced, get_sep,
-                         check_for_partial_string, RE_STRING_START)
-from xonsh.completers import completers
-
 
 class Completer(object):
     """This provides a list of optional completions for the xonsh shell."""
@@ -48,15 +32,14 @@ class Completer(object):
             Length of the prefix to be replaced in the completion
             (only used with prompt_toolkit)
         """
-        space = ' '  # intern some strings for faster appending
         ctx = ctx or {}
         empty_set = set()
-        for name, func in builtins.__xonsh_completers__.items():
-            o = func(prefix, line, begidx, endidx, ctx)
-            if isinstance(o, Sequence):
-                res, lprefix = o
+        for func in builtins.__xonsh_completers__.values():
+            out = func(prefix, line, begidx, endidx, ctx)
+            if isinstance(out, Sequence):
+                res, lprefix = out
             else:
-                res = o
+                res = out
                 lprefix = len(prefix)
             if res is not None and res != empty_set:
                 return tuple(sorted(res)), lprefix