Merge pull request #9375 from liukelly/jedi_completion

Initial patch with Jedi completion (no function header description).

IPython/core/completer.py

@@ -1,1272 +1,1332 b''
 # encoding: utf-8
 """Word completion for IPython.
 
 This module is a fork of the rlcompleter module in the Python standard
 library.  The original enhancements made to rlcompleter have been sent
 upstream and were accepted as of Python 2.3, but we need a lot more
 functionality specific to IPython, so this module will continue to live as an
 IPython-specific utility.
 
 Original rlcompleter documentation:
 
 This requires the latest extension to the readline module (the
 completes keywords, built-ins and globals in __main__; when completing
 NAME.NAME..., it evaluates (!) the expression up to the last dot and
 completes its attributes.
 
 It's very cool to do "import string" type "string.", hit the
 completion key (twice), and see the list of names defined by the
 string module!
 
 Tip: to use the tab key as the completion key, call
 
     readline.parse_and_bind("tab: complete")
 
 Notes:
 
 - Exceptions raised by the completer function are *ignored* (and
   generally cause the completion to fail).  This is a feature -- since
   readline sets the tty device in raw (or cbreak) mode, printing a
   traceback wouldn't work well without some complicated hoopla to save,
   reset and restore the tty state.
 
 - The evaluation of the NAME.NAME... form may cause arbitrary
   application defined code to be executed if an object with a
   ``__getattr__`` hook is found.  Since it is the responsibility of the
   application (or the user) to enable this feature, I consider this an
   acceptable risk.  More complicated expressions (e.g. function calls or
   indexing operations) are *not* evaluated.
 
 - GNU readline is also used by the built-in functions input() and
   raw_input(), and thus these also benefit/suffer from the completer
   features.  Clearly an interactive application can benefit by
   specifying its own completer function and using raw_input() for all
   its input.
 
 - When the original stdin is not a tty device, GNU readline is never
   used, and this module (and the readline module) are silently inactive.
 """
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 #
 # Some of this code originated from rlcompleter in the Python standard library
 # Copyright (C) 2001 Python Software Foundation, www.python.org
 
+from __future__ import print_function
+
 import __main__
 import glob
 import inspect
 import itertools
 import keyword
 import os
 import re
 import sys
 import unicodedata
 import string
 
 from traitlets.config.configurable import Configurable 
 from IPython.core.error import TryNext
 from IPython.core.inputsplitter import ESC_MAGIC
 from IPython.core.latex_symbols import latex_symbols, reverse_latex_symbol
 from IPython.utils import generics
 from IPython.utils.decorators import undoc
 from IPython.utils.dir2 import dir2, get_real_method
 from IPython.utils.process import arg_split
 from IPython.utils.py3compat import builtin_mod, string_types, PY3, cast_unicode_py2
 from traitlets import CBool, Enum
 
+try:
+    import jedi
+    import jedi.api.helpers
+    import jedi.parser.user_context
+    JEDI_INSTALLED = True
+except ImportError:
+    JEDI_INSTALLED = False
+
 #-----------------------------------------------------------------------------
 # Globals
 #-----------------------------------------------------------------------------
 
 # Public API
 __all__ = ['Completer','IPCompleter']
 
 if sys.platform == 'win32':
     PROTECTABLES = ' '
 else:
     PROTECTABLES = ' ()[]{}?=\\|;:\'#*"^&'
 
 
 #-----------------------------------------------------------------------------
 # Main functions and classes
 #-----------------------------------------------------------------------------
 
 def has_open_quotes(s):
     """Return whether a string has open quotes.
 
     This simply counts whether the number of quote characters of either type in
     the string is odd.
 
     Returns
     -------
     If there is an open quote, the quote character is returned.  Else, return
     False.
     """
     # We check " first, then ', so complex cases with nested quotes will get
     # the " to take precedence.
     if s.count('"') % 2:
         return '"'
     elif s.count("'") % 2:
         return "'"
     else:
         return False
 
 
 def protect_filename(s):
     """Escape a string to protect certain characters."""
 
     return "".join([(ch in PROTECTABLES and '\\' + ch or ch)
                     for ch in s])
 
 def expand_user(path):
     """Expand '~'-style usernames in strings.
 
     This is similar to :func:`os.path.expanduser`, but it computes and returns
     extra information that will be useful if the input was being used in
     computing completions, and you wish to return the completions with the
     original '~' instead of its expanded value.
 
     Parameters
     ----------
     path : str
       String to be expanded.  If no ~ is present, the output is the same as the
       input.
 
     Returns
     -------
     newpath : str
       Result of ~ expansion in the input path.
     tilde_expand : bool
       Whether any expansion was performed or not.
     tilde_val : str
       The value that ~ was replaced with.
     """
     # Default values
     tilde_expand = False
     tilde_val = ''
     newpath = path
 
     if path.startswith('~'):
         tilde_expand = True
         rest = len(path)-1
         newpath = os.path.expanduser(path)
         if rest:
             tilde_val = newpath[:-rest]
         else:
             tilde_val = newpath
 
     return newpath, tilde_expand, tilde_val
 
 
 def compress_user(path, tilde_expand, tilde_val):
     """Does the opposite of expand_user, with its outputs.
     """
     if tilde_expand:
         return path.replace(tilde_val, '~')
     else:
         return path
 
 
 
 def completions_sorting_key(word):
     """key for sorting completions
 
     This does several things:
 
     - Lowercase all completions, so they are sorted alphabetically with
       upper and lower case words mingled
     - Demote any completions starting with underscores to the end
     - Insert any %magic and %%cellmagic completions in the alphabetical order
       by their name
     """
     # Case insensitive sort
     word = word.lower()
 
     prio1, prio2 = 0, 0
 
     if word.startswith('__'):
         prio1 = 2
     elif word.startswith('_'):
         prio1 = 1
 
     if word.endswith('='):
         prio1 = -1
 
     if word.startswith('%%'):
         # If there's another % in there, this is something else, so leave it alone
         if not "%" in word[2:]:
             word = word[2:]
             prio2 = 2
     elif word.startswith('%'):
         if not "%" in word[1:]:
             word = word[1:]
             prio2 = 1
 
     return prio1, word, prio2
 
 
 @undoc
 class Bunch(object): pass
 
 
 DELIMS = ' \t\n`!@#$^&*()=+[{]}\\|;:\'",<>?'
 GREEDY_DELIMS = ' =\r\n'
 
 
 class CompletionSplitter(object):
     """An object to split an input line in a manner similar to readline.
 
     By having our own implementation, we can expose readline-like completion in
     a uniform manner to all frontends.  This object only needs to be given the
     line of text to be split and the cursor position on said line, and it
     returns the 'word' to be completed on at the cursor after splitting the
     entire line.
 
     What characters are used as splitting delimiters can be controlled by
     setting the `delims` attribute (this is a property that internally
     automatically builds the necessary regular expression)"""
 
     # Private interface
 
     # A string of delimiter characters.  The default value makes sense for
     # IPython's most typical usage patterns.
     _delims = DELIMS
 
     # The expression (a normal string) to be compiled into a regular expression
     # for actual splitting.  We store it as an attribute mostly for ease of
     # debugging, since this type of code can be so tricky to debug.
     _delim_expr = None
 
     # The regular expression that does the actual splitting
     _delim_re = None
 
     def __init__(self, delims=None):
         delims = CompletionSplitter._delims if delims is None else delims
         self.delims = delims
 
     @property
     def delims(self):
         """Return the string of delimiter characters."""
         return self._delims
 
     @delims.setter
     def delims(self, delims):
         """Set the delimiters for line splitting."""
         expr = '[' + ''.join('\\'+ c for c in delims) + ']'
         self._delim_re = re.compile(expr)
         self._delims = delims
         self._delim_expr = expr
 
     def split_line(self, line, cursor_pos=None):
         """Split a line of text with a cursor at the given position.
         """
         l = line if cursor_pos is None else line[:cursor_pos]
         return self._delim_re.split(l)[-1]
 
 
 class Completer(Configurable):
 
     greedy = CBool(False, config=True,
         help="""Activate greedy completion
+        PENDING DEPRECTION. this is now mostly taken care of with Jedi.
 
         This will enable completion on elements of lists, results of function calls, etc.,
         but can be unsafe because the code is actually evaluated on TAB.
         """
     )
     
 
     def __init__(self, namespace=None, global_namespace=None, **kwargs):
         """Create a new completer for the command line.
 
-        Completer(namespace=ns,global_namespace=ns2) -> completer instance.
+        Completer(namespace=ns, global_namespace=ns2) -> completer instance.
 
         If unspecified, the default namespace where completions are performed
         is __main__ (technically, __main__.__dict__). Namespaces should be
         given as dictionaries.
 
         An optional second namespace can be given.  This allows the completer
         to handle cases where both the local and global scopes need to be
         distinguished.
 
         Completer instances should be used as the completion mechanism of
         readline via the set_completer() call:
 
         readline.set_completer(Completer(my_namespace).complete)
         """
 
         # Don't bind to namespace quite yet, but flag whether the user wants a
         # specific namespace or to use __main__.__dict__. This will allow us
         # to bind to __main__.__dict__ at completion time, not now.
         if namespace is None:
             self.use_main_ns = 1
         else:
             self.use_main_ns = 0
             self.namespace = namespace
 
         # The global namespace, if given, can be bound directly
         if global_namespace is None:
             self.global_namespace = {}
         else:
             self.global_namespace = global_namespace
 
         super(Completer, self).__init__(**kwargs)
 
     def complete(self, text, state):
         """Return the next possible completion for 'text'.
 
         This is called successively with state == 0, 1, 2, ... until it
         returns None.  The completion should begin with 'text'.
 
         """
         if self.use_main_ns:
             self.namespace = __main__.__dict__
 
         if state == 0:
             if "." in text:
                 self.matches = self.attr_matches(text)
             else:
                 self.matches = self.global_matches(text)
         try:
             return self.matches[state]
         except IndexError:
             return None
 
     def global_matches(self, text):
         """Compute matches when text is a simple name.
 
         Return a list of all keywords, built-in functions and names currently
         defined in self.namespace or self.global_namespace that match.
 
         """
-        #print 'Completer->global_matches, txt=%r' % text # dbg
         matches = []
         match_append = matches.append
         n = len(text)
         for lst in [keyword.kwlist,
                     builtin_mod.__dict__.keys(),
                     self.namespace.keys(),
                     self.global_namespace.keys()]:
             for word in lst:
                 if word[:n] == text and word != "__builtins__":
                     match_append(word)
         return [cast_unicode_py2(m) for m in matches]
 
     def attr_matches(self, text):
         """Compute matches when text contains a dot.
 
         Assuming the text is of the form NAME.NAME....[NAME], and is
         evaluatable in self.namespace or self.global_namespace, it will be
         evaluated and its attributes (as revealed by dir()) are used as
         possible completions.  (For class instances, class members are are
         also considered.)
 
         WARNING: this can still invoke arbitrary C code, if an object
         with a __getattr__ hook is evaluated.
 
         """
 
-        #io.rprint('Completer->attr_matches, txt=%r' % text) # dbg
         # Another option, seems to work great. Catches things like ''.<tab>
         m = re.match(r"(\S+(\.\w+)*)\.(\w*)$", text)
     
         if m:
             expr, attr = m.group(1, 3)
         elif self.greedy:
             m2 = re.match(r"(.+)\.(\w*)$", self.line_buffer)
             if not m2:
                 return []
             expr, attr = m2.group(1,2)
         else:
             return []
     
         try:
             obj = eval(expr, self.namespace)
         except:
             try:
                 obj = eval(expr, self.global_namespace)
             except:
                 return []
 
         if self.limit_to__all__ and hasattr(obj, '__all__'):
             words = get__all__entries(obj)
         else: 
             words = dir2(obj)
 
         try:
             words = generics.complete_object(obj, words)
         except TryNext:
             pass
         except Exception:
             # Silence errors from completion function
             #raise # dbg
             pass
         # Build match list to return
         n = len(attr)
         return [u"%s.%s" % (expr, w) for w in words if w[:n] == attr ]
 
 
 def get__all__entries(obj):
     """returns the strings in the __all__ attribute"""
     try:
         words = getattr(obj, '__all__')
     except:
         return []
     
     return [cast_unicode_py2(w) for w in words if isinstance(w, string_types)]
 
 
 def match_dict_keys(keys, prefix, delims):
     """Used by dict_key_matches, matching the prefix to a list of keys"""
     if not prefix:
         return None, 0, [repr(k) for k in keys
                       if isinstance(k, (string_types, bytes))]
     quote_match = re.search('["\']', prefix)
     quote = quote_match.group()
     try:
         prefix_str = eval(prefix + quote, {})
     except Exception:
         return None, 0, []
 
     pattern = '[^' + ''.join('\\' + c for c in delims) + ']*$'
     token_match = re.search(pattern, prefix, re.UNICODE)
     token_start = token_match.start()
     token_prefix = token_match.group()
 
     # TODO: support bytes in Py3k
     matched = []
     for key in keys:
         try:
             if not key.startswith(prefix_str):
                 continue
         except (AttributeError, TypeError, UnicodeError):
             # Python 3+ TypeError on b'a'.startswith('a') or vice-versa
             continue
 
         # reformat remainder of key to begin with prefix
         rem = key[len(prefix_str):]
         # force repr wrapped in '
         rem_repr = repr(rem + '"')
         if rem_repr.startswith('u') and prefix[0] not in 'uU':
             # Found key is unicode, but prefix is Py2 string.
             # Therefore attempt to interpret key as string.
             try:
                 rem_repr = repr(rem.encode('ascii') + '"')
             except UnicodeEncodeError:
                 continue
 
         rem_repr = rem_repr[1 + rem_repr.index("'"):-2]
         if quote == '"':
             # The entered prefix is quoted with ",
             # but the match is quoted with '.
             # A contained " hence needs escaping for comparison:
             rem_repr = rem_repr.replace('"', '\\"')
 
         # then reinsert prefix from start of token
         matched.append('%s%s' % (token_prefix, rem_repr))
     return quote, token_start, matched
 
 
 def _safe_isinstance(obj, module, class_name):
     """Checks if obj is an instance of module.class_name if loaded
     """
     return (module in sys.modules and
             isinstance(obj, getattr(__import__(module), class_name)))
 
 
 def back_unicode_name_matches(text):
     u"""Match unicode characters back to unicode name
     
     This does  ☃ -> \\snowman
 
     Note that snowman is not a valid python3 combining character but will be expanded.
     Though it will not recombine back to the snowman character by the completion machinery.
 
     This will not either back-complete standard sequences like \\n, \\b ...
     
     Used on Python 3 only.
     """
     if len(text)<2:
         return u'', ()
     maybe_slash = text[-2]
     if maybe_slash != '\\':
         return u'', ()
 
     char = text[-1]
     # no expand on quote for completion in strings.
     # nor backcomplete standard ascii keys
     if char in string.ascii_letters or char in ['"',"'"]:
         return u'', ()
     try :
         unic = unicodedata.name(char)
         return '\\'+char,['\\'+unic]
     except KeyError as e:
         pass
     return u'', ()
 
 def back_latex_name_matches(text):
     u"""Match latex characters back to unicode name
     
     This does  ->\\sqrt
 
     Used on Python 3 only.
     """
     if len(text)<2:
         return u'', ()
     maybe_slash = text[-2]
     if maybe_slash != '\\':
         return u'', ()
 
 
     char = text[-1]
     # no expand on quote for completion in strings.
     # nor backcomplete standard ascii keys
     if char in string.ascii_letters or char in ['"',"'"]:
         return u'', ()
     try :
         latex = reverse_latex_symbol[char]
         # '\\' replace the \ as well
         return '\\'+char,[latex]
     except KeyError as e:
         pass
     return u'', ()
 
 
 class IPCompleter(Completer):
     """Extension of the completer class with IPython-specific features"""
 
     def _greedy_changed(self, name, old, new):
         """update the splitter and readline delims when greedy is changed"""
         if new:
             self.splitter.delims = GREEDY_DELIMS
         else:
             self.splitter.delims = DELIMS
 
         if self.readline:
             self.readline.set_completer_delims(self.splitter.delims)
     
     merge_completions = CBool(True, config=True,
         help="""Whether to merge completion results into a single list
         
         If False, only the completion results from the first non-empty
         completer will be returned.
         """
     )
     omit__names = Enum((0,1,2), default_value=2, config=True,
         help="""Instruct the completer to omit private method names
         
         Specifically, when completing on ``object.<tab>``.
         
         When 2 [default]: all names that start with '_' will be excluded.
         
         When 1: all 'magic' names (``__foo__``) will be excluded.
         
         When 0: nothing will be excluded.
         """
     )
     limit_to__all__ = CBool(default_value=False, config=True,
-        help="""Instruct the completer to use __all__ for the completion
+        help="""
+        DEPRECATED as of version 5.0.
+        
+        Instruct the completer to use __all__ for the completion
         
         Specifically, when completing on ``object.<tab>``.
         
         When True: only those names in obj.__all__ will be included.
         
         When False [default]: the __all__ attribute is ignored 
         """
     )
+    use_jedi_completions = CBool(default_value=JEDI_INSTALLED, config=True,
+        help="""Use Jedi to generate autocompletions.
+        """)
 
     def __init__(self, shell=None, namespace=None, global_namespace=None,
                  use_readline=True, config=None, **kwargs):
         """IPCompleter() -> completer
 
         Return a completer object suitable for use by the readline library
         via readline.set_completer().
 
         Inputs:
 
         - shell: a pointer to the ipython shell itself.  This is needed
           because this completer knows about magic functions, and those can
           only be accessed via the ipython instance.
 
         - namespace: an optional dict where completions are performed.
 
         - global_namespace: secondary optional dict for completions, to
           handle cases (such as IPython embedded inside functions) where
           both Python scopes are visible.
 
         use_readline : bool, optional
           If true, use the readline library.  This completer can still function
           without readline, though in that case callers must provide some extra
           information on each call about the current line."""
 
         self.magic_escape = ESC_MAGIC
         self.splitter = CompletionSplitter()
 
         # Readline configuration, only used by the rlcompleter method.
         if use_readline:
             # We store the right version of readline so that later code
             import IPython.utils.rlineimpl as readline
             self.readline = readline
         else:
             self.readline = None
 
         # _greedy_changed() depends on splitter and readline being defined:
         Completer.__init__(self, namespace=namespace, global_namespace=global_namespace,
                             config=config, **kwargs)
 
         # List where completion matches will be stored
         self.matches = []
         self.shell = shell
         # Regexp to split filenames with spaces in them
         self.space_name_re = re.compile(r'([^\\] )')
         # Hold a local ref. to glob.glob for speed
         self.glob = glob.glob
 
         # Determine if we are running on 'dumb' terminals, like (X)Emacs
         # buffers, to avoid completion problems.
         term = os.environ.get('TERM','xterm')
         self.dumb_terminal = term in ['dumb','emacs']
 
         # Special handling of backslashes needed in win32 platforms
         if sys.platform == "win32":
             self.clean_glob = self._clean_glob_win32
         else:
             self.clean_glob = self._clean_glob
 
         #regexp to parse docstring for function signature
         self.docstring_sig_re = re.compile(r'^[\w|\s.]+\(([^)]*)\).*')
         self.docstring_kwd_re = re.compile(r'[\s|\[]*(\w+)(?:\s*=\s*.*)')
         #use this if positional argument name is also needed
         #= re.compile(r'[\s|\[]*(\w+)(?:\s*=?\s*.*)')
 
         # All active matcher routines for completion
-        self.matchers = [self.python_matches,
+        self.matchers = [
                          self.file_matches,
                          self.magic_matches,
                          self.python_func_kw_matches,
                          self.dict_key_matches,
                          ]
 
     def all_completions(self, text):
         """
         Wrapper around the complete method for the benefit of emacs
         and pydb.
         """
         return self.complete(text)[1]
 
-    def _clean_glob(self,text):
+    def _clean_glob(self, text):
         return self.glob("%s*" % text)
 
     def _clean_glob_win32(self,text):
         return [f.replace("\\","/")
                 for f in self.glob("%s*" % text)]
 
     def file_matches(self, text):
         """Match filenames, expanding ~USER type strings.
 
         Most of the seemingly convoluted logic in this completer is an
         attempt to handle filenames with spaces in them.  And yet it's not
         quite perfect, because Python's readline doesn't expose all of the
         GNU readline details needed for this to be done correctly.
 
         For a filename with a space in it, the printed completions will be
         only the parts after what's already been typed (instead of the
         full completions, as is normally done).  I don't think with the
         current (as of Python 2.3) Python readline it's possible to do
         better."""
 
-        #io.rprint('Completer->file_matches: <%r>' % text) # dbg
-
         # chars that require escaping with backslash - i.e. chars
         # that readline treats incorrectly as delimiters, but we
         # don't want to treat as delimiters in filename matching
         # when escaped with backslash
         if text.startswith('!'):
             text = text[1:]
             text_prefix = u'!'
         else:
             text_prefix = u''
 
         text_until_cursor = self.text_until_cursor
         # track strings with open quotes
         open_quotes = has_open_quotes(text_until_cursor)
 
         if '(' in text_until_cursor or '[' in text_until_cursor:
             lsplit = text
         else:
             try:
                 # arg_split ~ shlex.split, but with unicode bugs fixed by us
                 lsplit = arg_split(text_until_cursor)[-1]
             except ValueError:
                 # typically an unmatched ", or backslash without escaped char.
                 if open_quotes:
                     lsplit = text_until_cursor.split(open_quotes)[-1]
                 else:
                     return []
             except IndexError:
                 # tab pressed on empty line
                 lsplit = ""
 
         if not open_quotes and lsplit != protect_filename(lsplit):
             # if protectables are found, do matching on the whole escaped name
             has_protectables = True
             text0,text = text,lsplit
         else:
             has_protectables = False
             text = os.path.expanduser(text)
 
         if text == "":
             return [text_prefix + cast_unicode_py2(protect_filename(f)) for f in self.glob("*")]
 
         # Compute the matches from the filesystem
         m0 = self.clean_glob(text.replace('\\',''))
 
         if has_protectables:
             # If we had protectables, we need to revert our changes to the
             # beginning of filename so that we don't double-write the part
             # of the filename we have so far
             len_lsplit = len(lsplit)
             matches = [text_prefix + text0 +
                        protect_filename(f[len_lsplit:]) for f in m0]
         else:
             if open_quotes:
                 # if we have a string with an open quote, we don't need to
                 # protect the names at all (and we _shouldn't_, as it
                 # would cause bugs when the filesystem call is made).
                 matches = m0
             else:
                 matches = [text_prefix +
                            protect_filename(f) for f in m0]
 
         # Mark directories in input list by appending '/' to their names.
         return [cast_unicode_py2(x+'/') if os.path.isdir(x) else x for x in matches]
 
     def magic_matches(self, text):
         """Match magics"""
-        #print 'Completer->magic_matches:',text,'lb',self.text_until_cursor # dbg
         # Get all shell magics now rather than statically, so magics loaded at
         # runtime show up too.
         lsm = self.shell.magics_manager.lsmagic()
         line_magics = lsm['line']
         cell_magics = lsm['cell']
         pre = self.magic_escape
         pre2 = pre+pre
         
         # Completion logic:
         # - user gives %%: only do cell magics
         # - user gives %: do both line and cell magics
         # - no prefix: do both
         # In other words, line magics are skipped if the user gives %% explicitly
         bare_text = text.lstrip(pre)
         comp = [ pre2+m for m in cell_magics if m.startswith(bare_text)]
         if not text.startswith(pre2):
             comp += [ pre+m for m in line_magics if m.startswith(bare_text)]
         return [cast_unicode_py2(c) for c in comp]
 
+    def python_jedi_matches(self, text, line_buffer, cursor_pos):
+        """Match attributes or global Python names using Jedi."""
+        if line_buffer.startswith('aimport ') or line_buffer.startswith('%aimport '):
+            return ()
+        namespaces = []
+        if self.namespace is None:
+            import __main__
+            namespaces.append(__main__.__dict__)
+        else:
+            namespaces.append(self.namespace)
+        if self.global_namespace is not None:
+            namespaces.append(self.global_namespace)
+
+        # cursor_pos is an it, jedi wants line and column
+
+        interpreter = jedi.Interpreter(line_buffer, namespaces, column=cursor_pos)
+        path = jedi.parser.user_context.UserContext(line_buffer, \
+                (1, len(line_buffer))).get_path_until_cursor()
+        path, dot, like = jedi.api.helpers.completion_parts(path)
+        if text.startswith('.'):
+            # text will be `.` on completions like `a[0].<tab>`
+            before = dot
+        else:
+            before = line_buffer[:len(line_buffer) - len(like)]
+
+
+        def trim_start(completion):
+            """completions need to start with `text`, trim the beginning until it does"""
+            if text in completion and not (completion.startswith(text)):
+                start_index = completion.index(text)
+                if cursor_pos:
+                     assert start_index <  cursor_pos
+                return completion[start_index:]
+            return completion
+        
+        completions = interpreter.completions()
+
+        completion_text = [c.name_with_symbols for c in completions]
+
+        if self.omit__names:
+            if self.omit__names == 1:
+                # true if txt is _not_ a __ name, false otherwise:
+                no__name = lambda txt: not txt.startswith('__')
+            else:
+                # true if txt is _not_ a _ name, false otherwise:
+                no__name = lambda txt: not txt.startswith('_')
+            completion_text = filter(no__name, completion_text)
+
+
+        return [trim_start(before + c_text) for c_text in completion_text]
+
+
     def python_matches(self, text):
         """Match attributes or global python names"""
-        
-        #io.rprint('Completer->python_matches, txt=%r' % text) # dbg
+        # Jedi completion
+
         if "." in text:
             try:
                 matches = self.attr_matches(text)
                 if text.endswith('.') and self.omit__names:
                     if self.omit__names == 1:
                         # true if txt is _not_ a __ name, false otherwise:
                         no__name = (lambda txt:
                                     re.match(r'.*\.__.*?__',txt) is None)
                     else:
                         # true if txt is _not_ a _ name, false otherwise:
                         no__name = (lambda txt:
                                     re.match(r'\._.*?',txt[txt.rindex('.'):]) is None)
                     matches = filter(no__name, matches)
             except NameError:
                 # catches <undefined attributes>.<tab>
                 matches = []
         else:
             matches = self.global_matches(text)
         return matches
 
     def _default_arguments_from_docstring(self, doc):
         """Parse the first line of docstring for call signature.
 
         Docstring should be of the form 'min(iterable[, key=func])\n'.
         It can also parse cython docstring of the form
         'Minuit.migrad(self, int ncall=10000, resume=True, int nsplit=1)'.
         """
         if doc is None:
             return []
 
         #care only the firstline
         line = doc.lstrip().splitlines()[0]
 
         #p = re.compile(r'^[\w|\s.]+\(([^)]*)\).*')
         #'min(iterable[, key=func])\n' -> 'iterable[, key=func]'
         sig = self.docstring_sig_re.search(line)
         if sig is None:
             return []
         # iterable[, key=func]' -> ['iterable[' ,' key=func]']
         sig = sig.groups()[0].split(',')
         ret = []
         for s in sig:
             #re.compile(r'[\s|\[]*(\w+)(?:\s*=\s*.*)')
             ret += self.docstring_kwd_re.findall(s)
         return ret
 
     def _default_arguments(self, obj):
         """Return the list of default arguments of obj if it is callable,
         or empty list otherwise."""
         call_obj = obj
         ret = []
         if inspect.isbuiltin(obj):
             pass
         elif not (inspect.isfunction(obj) or inspect.ismethod(obj)):
             if inspect.isclass(obj):
                 #for cython embededsignature=True the constructor docstring
                 #belongs to the object itself not __init__
                 ret += self._default_arguments_from_docstring(
                             getattr(obj, '__doc__', ''))
                 # for classes, check for __init__,__new__
                 call_obj = (getattr(obj, '__init__', None) or
                        getattr(obj, '__new__', None))
             # for all others, check if they are __call__able
             elif hasattr(obj, '__call__'):
                 call_obj = obj.__call__
         ret += self._default_arguments_from_docstring(
                  getattr(call_obj, '__doc__', ''))
 
         if PY3:
             _keeps = (inspect.Parameter.KEYWORD_ONLY,
                       inspect.Parameter.POSITIONAL_OR_KEYWORD)
             signature = inspect.signature
         else:
             import IPython.utils.signatures
             _keeps = (IPython.utils.signatures.Parameter.KEYWORD_ONLY,
                       IPython.utils.signatures.Parameter.POSITIONAL_OR_KEYWORD)
             signature = IPython.utils.signatures.signature
 
         try:
             sig = signature(call_obj)
             ret.extend(k for k, v in sig.parameters.items() if
                        v.kind in _keeps)
         except ValueError:
             pass
 
         return list(set(ret))
 
     def python_func_kw_matches(self,text):
         """Match named parameters (kwargs) of the last open function"""
 
         if "." in text: # a parameter cannot be dotted
             return []
         try: regexp = self.__funcParamsRegex
         except AttributeError:
             regexp = self.__funcParamsRegex = re.compile(r'''
                 '.*?(?<!\\)' |    # single quoted strings or
                 ".*?(?<!\\)" |    # double quoted strings or
                 \w+          |    # identifier
                 \S                # other characters
                 ''', re.VERBOSE | re.DOTALL)
         # 1. find the nearest identifier that comes before an unclosed
         # parenthesis before the cursor
         # e.g. for "foo (1+bar(x), pa<cursor>,a=1)", the candidate is "foo"
         tokens = regexp.findall(self.text_until_cursor)
         tokens.reverse()
         iterTokens = iter(tokens); openPar = 0
 
         for token in iterTokens:
             if token == ')':
                 openPar -= 1
             elif token == '(':
                 openPar += 1
                 if openPar > 0:
                     # found the last unclosed parenthesis
                     break
         else:
             return []
         # 2. Concatenate dotted names ("foo.bar" for "foo.bar(x, pa" )
         ids = []
         isId = re.compile(r'\w+$').match
 
         while True:
             try:
                 ids.append(next(iterTokens))
                 if not isId(ids[-1]):
                     ids.pop(); break
                 if not next(iterTokens) == '.':
                     break
             except StopIteration:
                 break
         # lookup the candidate callable matches either using global_matches
         # or attr_matches for dotted names
         if len(ids) == 1:
             callableMatches = self.global_matches(ids[0])
         else:
             callableMatches = self.attr_matches('.'.join(ids[::-1]))
         argMatches = []
         for callableMatch in callableMatches:
             try:
                 namedArgs = self._default_arguments(eval(callableMatch,
                                                         self.namespace))
             except:
                 continue
 
             for namedArg in namedArgs:
                 if namedArg.startswith(text):
                     argMatches.append(u"%s=" %namedArg)
         return argMatches
 
     def dict_key_matches(self, text):
         "Match string keys in a dictionary, after e.g. 'foo[' "
         def get_keys(obj):
             # Objects can define their own completions by defining an
             # _ipy_key_completions_() method.
             method = get_real_method(obj, '_ipython_key_completions_')
             if method is not None:
                 return method()
 
             # Special case some common in-memory dict-like types
             if isinstance(obj, dict) or\
                _safe_isinstance(obj, 'pandas', 'DataFrame'):
                 try:
                     return list(obj.keys())
                 except Exception:
                     return []
             elif _safe_isinstance(obj, 'numpy', 'ndarray') or\
                  _safe_isinstance(obj, 'numpy', 'void'):
                 return obj.dtype.names or []
             return []
 
         try:
             regexps = self.__dict_key_regexps
         except AttributeError:
             dict_key_re_fmt = r'''(?x)
             (  # match dict-referring expression wrt greedy setting
                 %s
             )
             \[   # open bracket
             \s*  # and optional whitespace
             ([uUbB]?  # string prefix (r not handled)
                 (?:   # unclosed string
                     '(?:[^']|(?<!\\)\\')*
                 |
                     "(?:[^"]|(?<!\\)\\")*
                 )
             )?
             $
             '''
             regexps = self.__dict_key_regexps = {
                 False: re.compile(dict_key_re_fmt % '''
                                   # identifiers separated by .
                                   (?!\d)\w+
                                   (?:\.(?!\d)\w+)*
                                   '''),
                 True: re.compile(dict_key_re_fmt % '''
                                  .+
                                  ''')
             }
 
         match = regexps[self.greedy].search(self.text_until_cursor)
         if match is None:
             return []
 
         expr, prefix = match.groups()
         try:
             obj = eval(expr, self.namespace)
         except Exception:
             try:
                 obj = eval(expr, self.global_namespace)
             except Exception:
                 return []
 
         keys = get_keys(obj)
         if not keys:
             return keys
         closing_quote, token_offset, matches = match_dict_keys(keys, prefix, self.splitter.delims)
         if not matches:
             return matches
         
         # get the cursor position of
         # - the text being completed
         # - the start of the key text
         # - the start of the completion
         text_start = len(self.text_until_cursor) - len(text)
         if prefix:
             key_start = match.start(2)
             completion_start = key_start + token_offset
         else:
             key_start = completion_start = match.end()
         
         # grab the leading prefix, to make sure all completions start with `text`
         if text_start > key_start:
             leading = ''
         else:
             leading = text[text_start:completion_start]
         
         # the index of the `[` character
         bracket_idx = match.end(1)
 
         # append closing quote and bracket as appropriate
         # this is *not* appropriate if the opening quote or bracket is outside
         # the text given to this method
         suf = ''
         continuation = self.line_buffer[len(self.text_until_cursor):]
         if key_start > text_start and closing_quote:
             # quotes were opened inside text, maybe close them
             if continuation.startswith(closing_quote):
                 continuation = continuation[len(closing_quote):]
             else:
                 suf += closing_quote
         if bracket_idx > text_start:
             # brackets were opened inside text, maybe close them
             if not continuation.startswith(']'):
                 suf += ']'
         
         return [leading + k + suf for k in matches]
 
     def unicode_name_matches(self, text):
         u"""Match Latex-like syntax for unicode characters base 
         on the name of the character.
         
         This does  \\GREEK SMALL LETTER ETA -> η
 
         Works only on valid python 3 identifier, or on combining characters that 
         will combine to form a valid identifier.
         
         Used on Python 3 only.
         """
         slashpos = text.rfind('\\')
         if slashpos > -1:
             s = text[slashpos+1:]
             try :
                 unic = unicodedata.lookup(s)
                 # allow combining chars
                 if ('a'+unic).isidentifier():
                     return '\\'+s,[unic]
             except KeyError as e:
                 pass
         return u'', []
 
 
 
 
     def latex_matches(self, text):
         u"""Match Latex syntax for unicode characters.
         
         This does both \\alp -> \\alpha and \\alpha -> α
         
         Used on Python 3 only.
         """
         slashpos = text.rfind('\\')
         if slashpos > -1:
             s = text[slashpos:]
             if s in latex_symbols:
                 # Try to complete a full latex symbol to unicode
                 # \\alpha -> α
                 return s, [latex_symbols[s]]
             else:
                 # If a user has partially typed a latex symbol, give them
                 # a full list of options \al -> [\aleph, \alpha]
                 matches = [k for k in latex_symbols if k.startswith(s)]
                 return s, matches
         return u'', []
 
     def dispatch_custom_completer(self, text):
         line = self.line_buffer
         if not line.strip():
             return None
 
         # Create a little structure to pass all the relevant information about
         # the current completion to any custom completer.
         event = Bunch()
         event.line = line
         event.symbol = text
         cmd = line.split(None,1)[0]
         event.command = cmd
         event.text_until_cursor = self.text_until_cursor
 
-        #print "\ncustom:{%s]\n" % event # dbg
-
         # for foo etc, try also to find completer for %foo
         if not cmd.startswith(self.magic_escape):
             try_magic = self.custom_completers.s_matches(
                 self.magic_escape + cmd)
         else:
             try_magic = []
 
         for c in itertools.chain(self.custom_completers.s_matches(cmd),
                  try_magic,
                  self.custom_completers.flat_matches(self.text_until_cursor)):
             try:
                 res = c(event)
                 if res:
                     # first, try case sensitive match
                     withcase = [cast_unicode_py2(r) for r in res if r.startswith(text)]
                     if withcase:
                         return withcase
                     # if none, then case insensitive ones are ok too
                     text_low = text.lower()
                     return [cast_unicode_py2(r) for r in res if r.lower().startswith(text_low)]
             except TryNext:
                 pass
 
         return None
 
     def complete(self, text=None, line_buffer=None, cursor_pos=None):
         """Find completions for the given text and line context.
 
         Note that both the text and the line_buffer are optional, but at least
         one of them must be given.
 
         Parameters
         ----------
           text : string, optional
             Text to perform the completion on.  If not given, the line buffer
             is split using the instance's CompletionSplitter object.
 
           line_buffer : string, optional
             If not given, the completer attempts to obtain the current line
             buffer via readline.  This keyword allows clients which are
             requesting for text completions in non-readline contexts to inform
             the completer of the entire text.
 
           cursor_pos : int, optional
             Index of the cursor in the full line buffer.  Should be provided by
             remote frontends where kernel has no access to frontend state.
 
         Returns
         -------
         text : str
           Text that was actually used in the completion.
 
         matches : list
           A list of completion matches.
         """
-        # io.rprint('\nCOMP1 %r %r %r' % (text, line_buffer, cursor_pos))  # dbg
-
         # if the cursor position isn't given, the only sane assumption we can
         # make is that it's at the end of the line (the common case)
         if cursor_pos is None:
             cursor_pos = len(line_buffer) if text is None else len(text)
 
         if PY3:
 
             base_text = text if not line_buffer else line_buffer[:cursor_pos]
             latex_text, latex_matches = self.latex_matches(base_text)
             if latex_matches:
                  return latex_text, latex_matches
             name_text = ''
             name_matches = []
             for meth in (self.unicode_name_matches, back_latex_name_matches, back_unicode_name_matches):
                 name_text, name_matches = meth(base_text)
                 if name_text:
                     return name_text, name_matches
         
         # if text is either None or an empty string, rely on the line buffer
         if not text:
             text = self.splitter.split_line(line_buffer, cursor_pos)
 
         # If no line buffer is given, assume the input text is all there was
         if line_buffer is None:
             line_buffer = text
 
         self.line_buffer = line_buffer
         self.text_until_cursor = self.line_buffer[:cursor_pos]
-        # io.rprint('COMP2 %r %r %r' % (text, line_buffer, cursor_pos))  # dbg
 
         # Start with a clean slate of completions
         self.matches[:] = []
         custom_res = self.dispatch_custom_completer(text)
         if custom_res is not None:
             # did custom completers produce something?
             self.matches = custom_res
         else:
             # Extend the list of completions with the results of each
             # matcher, so we return results to the user from all
             # namespaces.
             if self.merge_completions:
                 self.matches = []
                 for matcher in self.matchers:
                     try:
                         self.matches.extend(matcher(text))
                     except:
                         # Show the ugly traceback if the matcher causes an
                         # exception, but do NOT crash the kernel!
                         sys.excepthook(*sys.exc_info())
             else:
                 for matcher in self.matchers:
                     self.matches = matcher(text)
                     if self.matches:
                         break
         # FIXME: we should extend our api to return a dict with completions for
         # different types of objects.  The rlcomplete() method could then
         # simply collapse the dict into a list for readline, but we'd have
         # richer completion semantics in other evironments.
+        if self.use_jedi_completions:
+            self.matches.extend(self.python_jedi_matches(text, line_buffer, cursor_pos))
 
         self.matches = sorted(set(self.matches), key=completions_sorting_key)
 
-        #io.rprint('COMP TEXT, MATCHES: %r, %r' % (text, self.matches)) # dbg
         return text, self.matches
 
     def rlcomplete(self, text, state):
         """Return the state-th possible completion for 'text'.
 
         This is called successively with state == 0, 1, 2, ... until it
         returns None.  The completion should begin with 'text'.
 
         Parameters
         ----------
           text : string
             Text to perform the completion on.
 
           state : int
             Counter used by readline.
         """
         if state==0:
 
             self.line_buffer = line_buffer = self.readline.get_line_buffer()
             cursor_pos = self.readline.get_endidx()
 
             #io.rprint("\nRLCOMPLETE: %r %r %r" %
             #          (text, line_buffer, cursor_pos) ) # dbg
 
             # if there is only a tab on a line with only whitespace, instead of
             # the mostly useless 'do you want to see all million completions'
             # message, just do the right thing and give the user his tab!
             # Incidentally, this enables pasting of tabbed text from an editor
             # (as long as autoindent is off).
 
             # It should be noted that at least pyreadline still shows file
             # completions - is there a way around it?
 
             # don't apply this on 'dumb' terminals, such as emacs buffers, so
             # we don't interfere with their own tab-completion mechanism.
             if not (self.dumb_terminal or line_buffer.strip()):
                 self.readline.insert_text('\t')
                 sys.stdout.flush()
                 return None
 
             # Note: debugging exceptions that may occur in completion is very
             # tricky, because readline unconditionally silences them.  So if
             # during development you suspect a bug in the completion code, turn
             # this flag on temporarily by uncommenting the second form (don't
             # flip the value in the first line, as the '# dbg' marker can be
             # automatically detected and is used elsewhere).
             DEBUG = False
             #DEBUG = True # dbg
             if DEBUG:
                 try:
                     self.complete(text, line_buffer, cursor_pos)
                 except:
                     import traceback; traceback.print_exc()
             else:
                 # The normal production version is here
 
                 # This method computes the self.matches array
                 self.complete(text, line_buffer, cursor_pos)
 
         try:
             return self.matches[state]
         except IndexError:
             return None
 

IPython/core/tests/test_completer.py

@@ -1,803 +1,805 b''
 # encoding: utf-8
 """Tests for the IPython tab-completion machinery."""
 
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 import os
 import sys
 import unittest
 
 from contextlib import contextmanager
 
 import nose.tools as nt
 
 from traitlets.config.loader import Config
 from IPython import get_ipython
 from IPython.core import completer
 from IPython.external.decorators import knownfailureif
 from IPython.utils.tempdir import TemporaryDirectory, TemporaryWorkingDirectory
 from IPython.utils.generics import complete_object
 from IPython.utils.py3compat import string_types, unicode_type
 from IPython.testing import decorators as dec
 
 #-----------------------------------------------------------------------------
 # Test functions
 #-----------------------------------------------------------------------------
 
 @contextmanager
 def greedy_completion():
     ip = get_ipython()
     greedy_original = ip.Completer.greedy
     try:
         ip.Completer.greedy = True
         yield
     finally:
         ip.Completer.greedy = greedy_original
 
 def test_protect_filename():
     pairs = [ ('abc','abc'),
               (' abc',r'\ abc'),
               ('a bc',r'a\ bc'),
               ('a  bc',r'a\ \ bc'),
               ('  bc',r'\ \ bc'),
               ]
     # On posix, we also protect parens and other special characters
     if sys.platform != 'win32':
         pairs.extend( [('a(bc',r'a\(bc'),
                        ('a)bc',r'a\)bc'),
                        ('a( )bc',r'a\(\ \)bc'),
                        ('a[1]bc', r'a\[1\]bc'),
                        ('a{1}bc', r'a\{1\}bc'),
                        ('a#bc', r'a\#bc'),
                        ('a?bc', r'a\?bc'),
                        ('a=bc', r'a\=bc'),
                        ('a\\bc', r'a\\bc'),
                        ('a|bc', r'a\|bc'),
                        ('a;bc', r'a\;bc'),
                        ('a:bc', r'a\:bc'),
                        ("a'bc", r"a\'bc"),
                        ('a*bc', r'a\*bc'),
                        ('a"bc', r'a\"bc'),
                        ('a^bc', r'a\^bc'),
                        ('a&bc', r'a\&bc'),
                        ] )
     # run the actual tests
     for s1, s2 in pairs:
         s1p = completer.protect_filename(s1)
         nt.assert_equal(s1p, s2)
 
 
 def check_line_split(splitter, test_specs):
     for part1, part2, split in test_specs:
         cursor_pos = len(part1)
         line = part1+part2
         out = splitter.split_line(line, cursor_pos)
         nt.assert_equal(out, split)
 
 
 def test_line_split():
     """Basic line splitter test with default specs."""
     sp = completer.CompletionSplitter()
     # The format of the test specs is: part1, part2, expected answer.  Parts 1
     # and 2 are joined into the 'line' sent to the splitter, as if the cursor
     # was at the end of part1.  So an empty part2 represents someone hitting
     # tab at the end of the line, the most common case.
     t = [('run some/scrip', '', 'some/scrip'),
          ('run scripts/er', 'ror.py foo', 'scripts/er'),
          ('echo $HOM', '', 'HOM'),
          ('print sys.pa', '', 'sys.pa'),
          ('print(sys.pa', '', 'sys.pa'),
          ("execfile('scripts/er", '', 'scripts/er'),
          ('a[x.', '', 'x.'),
          ('a[x.', 'y', 'x.'),
          ('cd "some_file/', '', 'some_file/'),
          ]
     check_line_split(sp, t)
     # Ensure splitting works OK with unicode by re-running the tests with
     # all inputs turned into unicode
     check_line_split(sp, [ map(unicode_type, p) for p in t] )
 
 
 def test_custom_completion_error():
     """Test that errors from custom attribute completers are silenced."""
     ip = get_ipython()
     class A(object): pass
     ip.user_ns['a'] = A()
     
     @complete_object.when_type(A)
     def complete_A(a, existing_completions):
         raise TypeError("this should be silenced")
     
     ip.complete("a.")
 
 
 def test_unicode_completions():
     ip = get_ipython()
     # Some strings that trigger different types of completion.  Check them both
     # in str and unicode forms
     s = ['ru', '%ru', 'cd /', 'floa', 'float(x)/']
     for t in s + list(map(unicode_type, s)):
         # We don't need to check exact completion values (they may change
         # depending on the state of the namespace, but at least no exceptions
         # should be thrown and the return value should be a pair of text, list
         # values.
         text, matches = ip.complete(t)
         nt.assert_true(isinstance(text, string_types))
         nt.assert_true(isinstance(matches, list))
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only applies in Py>=3')
 def test_latex_completions():
     from IPython.core.latex_symbols import latex_symbols
     import random
     ip = get_ipython()
     # Test some random unicode symbols
     keys = random.sample(latex_symbols.keys(), 10)
     for k in keys:
         text, matches = ip.complete(k)
         nt.assert_equal(len(matches),1)
         nt.assert_equal(text, k)
         nt.assert_equal(matches[0], latex_symbols[k])
     # Test a more complex line
     text, matches = ip.complete(u'print(\\alpha')
     nt.assert_equals(text, u'\\alpha')
     nt.assert_equals(matches[0], latex_symbols['\\alpha'])
     # Test multiple matching latex symbols
     text, matches = ip.complete(u'\\al')
     nt.assert_in('\\alpha', matches)
     nt.assert_in('\\aleph', matches)
 
 
 
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only apply on python3')
 def test_back_latex_completion():
     ip = get_ipython()
 
     # do not return more than 1 matches fro \beta, only the latex one.
     name, matches = ip.complete('\\β')
     nt.assert_equal(len(matches), 1)
     nt.assert_equal(matches[0], '\\beta')
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only apply on python3')
 def test_back_unicode_completion():
     ip = get_ipython()
     
     name, matches = ip.complete('\\Ⅴ')
     nt.assert_equal(len(matches), 1)
     nt.assert_equal(matches[0], '\\ROMAN NUMERAL FIVE')
 
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only apply on python3')
 def test_forward_unicode_completion():
     ip = get_ipython()
     
     name, matches = ip.complete('\\ROMAN NUMERAL FIVE')
     nt.assert_equal(len(matches), 1)
     nt.assert_equal(matches[0], 'Ⅴ')
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only apply on python3')
 def test_no_ascii_back_completion():
     ip = get_ipython()
     with TemporaryWorkingDirectory():  # Avoid any filename completions
         # single ascii letter that don't have yet completions
-        for letter in 'fjqyJMQVWY' :
+        for letter in 'jJ' :
             name, matches = ip.complete('\\'+letter)
             nt.assert_equal(matches, [])
 
 
 
 
 class CompletionSplitterTestCase(unittest.TestCase):
     def setUp(self):
         self.sp = completer.CompletionSplitter()
 
     def test_delim_setting(self):
         self.sp.delims = ' '
         nt.assert_equal(self.sp.delims, ' ')
         nt.assert_equal(self.sp._delim_expr, '[\ ]')
 
     def test_spaces(self):
         """Test with only spaces as split chars."""
         self.sp.delims = ' '
         t = [('foo', '', 'foo'),
              ('run foo', '', 'foo'),
              ('run foo', 'bar', 'foo'),
              ]
         check_line_split(self.sp, t)
 
 
 def test_has_open_quotes1():
     for s in ["'", "'''", "'hi' '"]:
         nt.assert_equal(completer.has_open_quotes(s), "'")
 
 
 def test_has_open_quotes2():
     for s in ['"', '"""', '"hi" "']:
         nt.assert_equal(completer.has_open_quotes(s), '"')
 
 
 def test_has_open_quotes3():
     for s in ["''", "''' '''", "'hi' 'ipython'"]:
         nt.assert_false(completer.has_open_quotes(s))
 
 
 def test_has_open_quotes4():
     for s in ['""', '""" """', '"hi" "ipython"']:
         nt.assert_false(completer.has_open_quotes(s))
 
 
 @knownfailureif(sys.platform == 'win32', "abspath completions fail on Windows")
 def test_abspath_file_completions():
     ip = get_ipython()
     with TemporaryDirectory() as tmpdir:
         prefix = os.path.join(tmpdir, 'foo')
         suffixes = ['1', '2']
         names = [prefix+s for s in suffixes]
         for n in names:
             open(n, 'w').close()
 
         # Check simple completion
         c = ip.complete(prefix)[1]
         nt.assert_equal(c, names)
 
         # Now check with a function call
         cmd = 'a = f("%s' % prefix
         c = ip.complete(prefix, cmd)[1]
         comp = [prefix+s for s in suffixes]
         nt.assert_equal(c, comp)
 
 
 def test_local_file_completions():
     ip = get_ipython()
     with TemporaryWorkingDirectory():
         prefix = './foo'
         suffixes = ['1', '2']
         names = [prefix+s for s in suffixes]
         for n in names:
             open(n, 'w').close()
 
         # Check simple completion
         c = ip.complete(prefix)[1]
         nt.assert_equal(c, names)
 
         # Now check with a function call
         cmd = 'a = f("%s' % prefix
         c = ip.complete(prefix, cmd)[1]
-        comp = [prefix+s for s in suffixes]
-        nt.assert_equal(c, comp)
+        comp = set(prefix+s for s in suffixes)
+        nt.assert_true(comp.issubset(set(c)))
 
 
 def test_greedy_completions():
     ip = get_ipython()
     ip.ex('a=list(range(5))')
     _,c = ip.complete('.',line='a[0].')
-    nt.assert_false('a[0].real' in c,
+    nt.assert_false('.real' in c,
                     "Shouldn't have completed on a[0]: %s"%c)
     with greedy_completion():
-        _,c = ip.complete('.',line='a[0].')
-        nt.assert_true('a[0].real' in c, "Should have completed on a[0]: %s"%c)
+        def _(line, cursor_pos, expect, message):
+            _,c = ip.complete('.', line=line, cursor_pos=cursor_pos)
+            nt.assert_in(expect, c, message%c)
+
+        yield _, 'a[0].', 5, '.real', "Should have completed on a[0].: %s"
+        yield _, 'a[0].r', 6, '.real', "Should have completed on a[0].r: %s"
+        
+        if sys.version_info > (3,4):
+            yield _, 'a[0].from_', 10, '.from_bytes', "Should have completed on a[0].from_: %s"
+       
+
+        def _2():
+            # jedi bug, this will be empty, makeitfail for now, 
+            # once jedi is fixed, switch to assert_in
+            # https://github.com/davidhalter/jedi/issues/718
+            _,c = ip.complete('.',line='a[0].from', cursor_pos=9)
+            nt.assert_not_in('.from_bytes', c, "Should not have completed on a[0].from (jedi bug), if fails, update test to assert_in: %s"%c)
+        yield _2
+
 
 
 def test_omit__names():
     # also happens to test IPCompleter as a configurable
     ip = get_ipython()
     ip._hidden_attr = 1
     ip._x = {}
     c = ip.Completer
     ip.ex('ip=get_ipython()')
     cfg = Config()
     cfg.IPCompleter.omit__names = 0
     c.update_config(cfg)
     s,matches = c.complete('ip.')
     nt.assert_in('ip.__str__', matches)
     nt.assert_in('ip._hidden_attr', matches)
     cfg = Config()
     cfg.IPCompleter.omit__names = 1
     c.update_config(cfg)
     s,matches = c.complete('ip.')
     nt.assert_not_in('ip.__str__', matches)
     nt.assert_in('ip._hidden_attr', matches)
     cfg = Config()
     cfg.IPCompleter.omit__names = 2
     c.update_config(cfg)
     s,matches = c.complete('ip.')
     nt.assert_not_in('ip.__str__', matches)
     nt.assert_not_in('ip._hidden_attr', matches)
     s,matches = c.complete('ip._x.')
     nt.assert_in('ip._x.keys', matches)
     del ip._hidden_attr
 
 
 def test_limit_to__all__False_ok():
     ip = get_ipython()
     c = ip.Completer
     ip.ex('class D: x=24')
     ip.ex('d=D()')
     cfg = Config()
     cfg.IPCompleter.limit_to__all__ = False
     c.update_config(cfg)
     s, matches = c.complete('d.')
     nt.assert_in('d.x', matches)
 
 
-def test_limit_to__all__True_ok():
-    ip = get_ipython()
-    c = ip.Completer
-    ip.ex('class D: x=24')
-    ip.ex('d=D()')
-    ip.ex("d.__all__=['z']")
-    cfg = Config()
-    cfg.IPCompleter.limit_to__all__ = True
-    c.update_config(cfg)
-    s, matches = c.complete('d.')
-    nt.assert_in('d.z', matches)
-    nt.assert_not_in('d.x', matches)
-
-
 def test_get__all__entries_ok():
     class A(object):
         __all__ = ['x', 1]
     words = completer.get__all__entries(A())
     nt.assert_equal(words, ['x'])
 
 
 def test_get__all__entries_no__all__ok():
     class A(object):
         pass
     words = completer.get__all__entries(A())
     nt.assert_equal(words, [])
 
 
 def test_func_kw_completions():
     ip = get_ipython()
     c = ip.Completer
     ip.ex('def myfunc(a=1,b=2): return a+b')
     s, matches = c.complete(None, 'myfunc(1,b')
     nt.assert_in('b=', matches)
     # Simulate completing with cursor right after b (pos==10):
     s, matches = c.complete(None, 'myfunc(1,b)', 10)
     nt.assert_in('b=', matches)
     s, matches = c.complete(None, 'myfunc(a="escaped\\")string",b')
     nt.assert_in('b=', matches)
     #builtin function
     s, matches = c.complete(None, 'min(k, k')
     nt.assert_in('key=', matches)
 
 
 def test_default_arguments_from_docstring():
-    doc = min.__doc__
     ip = get_ipython()
     c = ip.Completer
     kwd = c._default_arguments_from_docstring(
         'min(iterable[, key=func]) -> value')
     nt.assert_equal(kwd, ['key'])
     #with cython type etc
     kwd = c._default_arguments_from_docstring(
         'Minuit.migrad(self, int ncall=10000, resume=True, int nsplit=1)\n')
     nt.assert_equal(kwd, ['ncall', 'resume', 'nsplit'])
     #white spaces
     kwd = c._default_arguments_from_docstring(
         '\n Minuit.migrad(self, int ncall=10000, resume=True, int nsplit=1)\n')
     nt.assert_equal(kwd, ['ncall', 'resume', 'nsplit'])
 
 def test_line_magics():
     ip = get_ipython()
     c = ip.Completer
     s, matches = c.complete(None, 'lsmag')
     nt.assert_in('%lsmagic', matches)
     s, matches = c.complete(None, '%lsmag')
     nt.assert_in('%lsmagic', matches)
 
 
 def test_cell_magics():
     from IPython.core.magic import register_cell_magic
 
     @register_cell_magic
     def _foo_cellm(line, cell):
         pass
     
     ip = get_ipython()
     c = ip.Completer
 
     s, matches = c.complete(None, '_foo_ce')
     nt.assert_in('%%_foo_cellm', matches)
     s, matches = c.complete(None, '%%_foo_ce')
     nt.assert_in('%%_foo_cellm', matches)
 
 
 def test_line_cell_magics():
     from IPython.core.magic import register_line_cell_magic
 
     @register_line_cell_magic
     def _bar_cellm(line, cell):
         pass
     
     ip = get_ipython()
     c = ip.Completer
 
     # The policy here is trickier, see comments in completion code.  The
     # returned values depend on whether the user passes %% or not explicitly,
     # and this will show a difference if the same name is both a line and cell
     # magic.
     s, matches = c.complete(None, '_bar_ce')
     nt.assert_in('%_bar_cellm', matches)
     nt.assert_in('%%_bar_cellm', matches)
     s, matches = c.complete(None, '%_bar_ce')
     nt.assert_in('%_bar_cellm', matches)
     nt.assert_in('%%_bar_cellm', matches)
     s, matches = c.complete(None, '%%_bar_ce')
     nt.assert_not_in('%_bar_cellm', matches)
     nt.assert_in('%%_bar_cellm', matches)
 
 
 def test_magic_completion_order():
 
     ip = get_ipython()
     c = ip.Completer
 
     # Test ordering of magics and non-magics with the same name
     # We want the non-magic first
 
     # Before importing matplotlib, there should only be one option:
 
     text, matches = c.complete('mat')
     nt.assert_equal(matches, ["%matplotlib"])
 
 
     ip.run_cell("matplotlib = 1")  # introduce name into namespace
 
     # After the import, there should be two options, ordered like this:
     text, matches = c.complete('mat')
     nt.assert_equal(matches, ["matplotlib", "%matplotlib"])
 
 
     ip.run_cell("timeit = 1")  # define a user variable called 'timeit'
 
     # Order of user variable and line and cell magics with same name:
     text, matches = c.complete('timeit')
     nt.assert_equal(matches, ["timeit", "%timeit","%%timeit"])
 
 
 def test_dict_key_completion_string():
     """Test dictionary key completion for string keys"""
     ip = get_ipython()
     complete = ip.Completer.complete
 
     ip.user_ns['d'] = {'abc': None}
 
     # check completion at different stages
     _, matches = complete(line_buffer="d[")
     nt.assert_in("'abc'", matches)
     nt.assert_not_in("'abc']", matches)
 
     _, matches = complete(line_buffer="d['")
     nt.assert_in("abc", matches)
     nt.assert_not_in("abc']", matches)
 
     _, matches = complete(line_buffer="d['a")
     nt.assert_in("abc", matches)
     nt.assert_not_in("abc']", matches)
 
     # check use of different quoting
     _, matches = complete(line_buffer="d[\"")
     nt.assert_in("abc", matches)
     nt.assert_not_in('abc\"]', matches)
 
     _, matches = complete(line_buffer="d[\"a")
     nt.assert_in("abc", matches)
     nt.assert_not_in('abc\"]', matches)
 
     # check sensitivity to following context
     _, matches = complete(line_buffer="d[]", cursor_pos=2)
     nt.assert_in("'abc'", matches)
 
     _, matches = complete(line_buffer="d['']", cursor_pos=3)
     nt.assert_in("abc", matches)
     nt.assert_not_in("abc'", matches)
     nt.assert_not_in("abc']", matches)
 
     # check multiple solutions are correctly returned and that noise is not
     ip.user_ns['d'] = {'abc': None, 'abd': None, 'bad': None, object(): None,
                        5: None}
 
     _, matches = complete(line_buffer="d['a")
     nt.assert_in("abc", matches)
     nt.assert_in("abd", matches)
     nt.assert_not_in("bad", matches)
     assert not any(m.endswith((']', '"', "'")) for m in matches), matches
 
     # check escaping and whitespace
     ip.user_ns['d'] = {'a\nb': None, 'a\'b': None, 'a"b': None, 'a word': None}
     _, matches = complete(line_buffer="d['a")
     nt.assert_in("a\\nb", matches)
     nt.assert_in("a\\'b", matches)
     nt.assert_in("a\"b", matches)
     nt.assert_in("a word", matches)
     assert not any(m.endswith((']', '"', "'")) for m in matches), matches
 
     # - can complete on non-initial word of the string
     _, matches = complete(line_buffer="d['a w")
     nt.assert_in("word", matches)
 
     # - understands quote escaping
     _, matches = complete(line_buffer="d['a\\'")
     nt.assert_in("b", matches)
 
     # - default quoting should work like repr
     _, matches = complete(line_buffer="d[")
     nt.assert_in("\"a'b\"", matches)
 
     # - when opening quote with ", possible to match with unescaped apostrophe
     _, matches = complete(line_buffer="d[\"a'")
     nt.assert_in("b", matches)
 
     # need to not split at delims that readline won't split at
     if '-' not in ip.Completer.splitter.delims:
         ip.user_ns['d'] = {'before-after': None}
         _, matches = complete(line_buffer="d['before-af")
         nt.assert_in('before-after', matches)
 
 def test_dict_key_completion_contexts():
     """Test expression contexts in which dict key completion occurs"""
     ip = get_ipython()
     complete = ip.Completer.complete
     d = {'abc': None}
     ip.user_ns['d'] = d
 
     class C:
         data = d
     ip.user_ns['C'] = C
     ip.user_ns['get'] = lambda: d
 
     def assert_no_completion(**kwargs):
         _, matches = complete(**kwargs)
         nt.assert_not_in('abc', matches)
         nt.assert_not_in('abc\'', matches)
         nt.assert_not_in('abc\']', matches)
         nt.assert_not_in('\'abc\'', matches)
         nt.assert_not_in('\'abc\']', matches)
 
     def assert_completion(**kwargs):
         _, matches = complete(**kwargs)
         nt.assert_in("'abc'", matches)
         nt.assert_not_in("'abc']", matches)
 
     # no completion after string closed, even if reopened
     assert_no_completion(line_buffer="d['a'")
     assert_no_completion(line_buffer="d[\"a\"")
     assert_no_completion(line_buffer="d['a' + ")
     assert_no_completion(line_buffer="d['a' + '")
 
     # completion in non-trivial expressions
     assert_completion(line_buffer="+ d[")
     assert_completion(line_buffer="(d[")
     assert_completion(line_buffer="C.data[")
 
     # greedy flag
     def assert_completion(**kwargs):
         _, matches = complete(**kwargs)
         nt.assert_in("get()['abc']", matches)
     
     assert_no_completion(line_buffer="get()[")
     with greedy_completion():
         assert_completion(line_buffer="get()[")
         assert_completion(line_buffer="get()['")
         assert_completion(line_buffer="get()['a")
         assert_completion(line_buffer="get()['ab")
         assert_completion(line_buffer="get()['abc")
 
 
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only applies in Py>=3')
 def test_dict_key_completion_bytes():
     """Test handling of bytes in dict key completion"""
     ip = get_ipython()
     complete = ip.Completer.complete
 
     ip.user_ns['d'] = {'abc': None, b'abd': None}
 
     _, matches = complete(line_buffer="d[")
     nt.assert_in("'abc'", matches)
     nt.assert_in("b'abd'", matches)
 
     if False:  # not currently implemented
         _, matches = complete(line_buffer="d[b")
         nt.assert_in("b'abd'", matches)
         nt.assert_not_in("b'abc'", matches)
 
         _, matches = complete(line_buffer="d[b'")
         nt.assert_in("abd", matches)
         nt.assert_not_in("abc", matches)
 
         _, matches = complete(line_buffer="d[B'")
         nt.assert_in("abd", matches)
         nt.assert_not_in("abc", matches)
 
         _, matches = complete(line_buffer="d['")
         nt.assert_in("abc", matches)
         nt.assert_not_in("abd", matches)
 
 
 @dec.onlyif(sys.version_info[0] < 3, 'This test only applies in Py<3')
 def test_dict_key_completion_unicode_py2():
     """Test handling of unicode in dict key completion"""
     ip = get_ipython()
     complete = ip.Completer.complete
 
     ip.user_ns['d'] = {u'abc': None,
                        u'a\u05d0b': None}
 
     _, matches = complete(line_buffer="d[")
     nt.assert_in("u'abc'", matches)
     nt.assert_in("u'a\\u05d0b'", matches)
 
     _, matches = complete(line_buffer="d['a")
     nt.assert_in("abc", matches)
     nt.assert_not_in("a\\u05d0b", matches)
 
     _, matches = complete(line_buffer="d[u'a")
     nt.assert_in("abc", matches)
     nt.assert_in("a\\u05d0b", matches)
 
     _, matches = complete(line_buffer="d[U'a")
     nt.assert_in("abc", matches)
     nt.assert_in("a\\u05d0b", matches)
 
     # query using escape
     _, matches = complete(line_buffer=u"d[u'a\\u05d0")
     nt.assert_in("u05d0b", matches)  # tokenized after \\
 
     # query using character
     _, matches = complete(line_buffer=u"d[u'a\u05d0")
     nt.assert_in(u"a\u05d0b", matches)
     
     with greedy_completion():
         _, matches = complete(line_buffer="d[")
         nt.assert_in("d[u'abc']", matches)
         nt.assert_in("d[u'a\\u05d0b']", matches)
 
         _, matches = complete(line_buffer="d['a")
         nt.assert_in("d['abc']", matches)
         nt.assert_not_in("d[u'a\\u05d0b']", matches)
 
         _, matches = complete(line_buffer="d[u'a")
         nt.assert_in("d[u'abc']", matches)
         nt.assert_in("d[u'a\\u05d0b']", matches)
 
         _, matches = complete(line_buffer="d[U'a")
         nt.assert_in("d[U'abc']", matches)
         nt.assert_in("d[U'a\\u05d0b']", matches)
 
         # query using escape
         _, matches = complete(line_buffer=u"d[u'a\\u05d0")
         nt.assert_in("d[u'a\\u05d0b']", matches)  # tokenized after \\
 
         # query using character
         _, matches = complete(line_buffer=u"d[u'a\u05d0")
         nt.assert_in(u"d[u'a\u05d0b']", matches)
 
 
 @dec.onlyif(sys.version_info[0] >= 3, 'This test only applies in Py>=3')
 def test_dict_key_completion_unicode_py3():
     """Test handling of unicode in dict key completion"""
     ip = get_ipython()
     complete = ip.Completer.complete
 
     ip.user_ns['d'] = {u'a\u05d0': None}
 
     # query using escape
     _, matches = complete(line_buffer="d['a\\u05d0")
     nt.assert_in("u05d0", matches)  # tokenized after \\
 
     # query using character
     _, matches = complete(line_buffer="d['a\u05d0")
     nt.assert_in(u"a\u05d0", matches)
     
     with greedy_completion():
         # query using escape
         _, matches = complete(line_buffer="d['a\\u05d0")
         nt.assert_in("d['a\\u05d0']", matches)  # tokenized after \\
 
         # query using character
         _, matches = complete(line_buffer="d['a\u05d0")
         nt.assert_in(u"d['a\u05d0']", matches)
         
 
 
 @dec.skip_without('numpy')
 def test_struct_array_key_completion():
     """Test dict key completion applies to numpy struct arrays"""
     import numpy
     ip = get_ipython()
     complete = ip.Completer.complete
     ip.user_ns['d'] = numpy.array([], dtype=[('hello', 'f'), ('world', 'f')])
     _, matches = complete(line_buffer="d['")
     nt.assert_in("hello", matches)
     nt.assert_in("world", matches)
     # complete on the numpy struct itself
     dt = numpy.dtype([('my_head', [('my_dt', '>u4'), ('my_df', '>u4')]),
                       ('my_data', '>f4', 5)])
     x = numpy.zeros(2, dtype=dt)
     ip.user_ns['d'] = x[1]
     _, matches = complete(line_buffer="d['")
     nt.assert_in("my_head", matches)
     nt.assert_in("my_data", matches)
     # complete on a nested level
     with greedy_completion():
         ip.user_ns['d'] = numpy.zeros(2, dtype=dt)
         _, matches = complete(line_buffer="d[1]['my_head']['")
         nt.assert_true(any(["my_dt" in m for m in matches]))
         nt.assert_true(any(["my_df" in m for m in matches]))
 
 
 @dec.skip_without('pandas')
 def test_dataframe_key_completion():
     """Test dict key completion applies to pandas DataFrames"""
     import pandas
     ip = get_ipython()
     complete = ip.Completer.complete
     ip.user_ns['d'] = pandas.DataFrame({'hello': [1], 'world': [2]})
     _, matches = complete(line_buffer="d['")
     nt.assert_in("hello", matches)
     nt.assert_in("world", matches)
 
 
 def test_dict_key_completion_invalids():
     """Smoke test cases dict key completion can't handle"""
     ip = get_ipython()
     complete = ip.Completer.complete
 
     ip.user_ns['no_getitem'] = None
     ip.user_ns['no_keys'] = []
     ip.user_ns['cant_call_keys'] = dict
     ip.user_ns['empty'] = {}
     ip.user_ns['d'] = {'abc': 5}
 
     _, matches = complete(line_buffer="no_getitem['")
     _, matches = complete(line_buffer="no_keys['")
     _, matches = complete(line_buffer="cant_call_keys['")
     _, matches = complete(line_buffer="empty['")
     _, matches = complete(line_buffer="name_error['")
     _, matches = complete(line_buffer="d['\\")  # incomplete escape
 
 class KeyCompletable(object):
     def __init__(self, things=()):
         self.things = things
 
     def _ipython_key_completions_(self):
         return list(self.things)
 
 def test_object_key_completion():
     ip = get_ipython()
     ip.user_ns['key_completable'] = KeyCompletable(['qwerty', 'qwick'])
 
     _, matches = ip.Completer.complete(line_buffer="key_completable['qw")
     nt.assert_in('qwerty', matches)
     nt.assert_in('qwick', matches)
 
 
 def test_aimport_module_completer():
     ip = get_ipython()
     _, matches = ip.complete('i', '%aimport i')
     nt.assert_in('io', matches)
     nt.assert_not_in('int', matches)
 
 def test_nested_import_module_completer():
     ip = get_ipython()
     _, matches = ip.complete(None, 'import IPython.co', 17)
     nt.assert_in('IPython.core', matches)
     nt.assert_not_in('import IPython.core', matches)
     nt.assert_not_in('IPython.display', matches)
 
 def test_import_module_completer():
     ip = get_ipython()
     _, matches = ip.complete('i', 'import i')
     nt.assert_in('io', matches)
     nt.assert_not_in('int', matches)
 
 def test_from_module_completer():
     ip = get_ipython()
     _, matches = ip.complete('B', 'from io import B')
     nt.assert_in('BytesIO', matches)
     nt.assert_not_in('BaseException', matches)

IPython/terminal/ptshell.py

@@ -1,451 +1,455 b''
 """IPython terminal interface using prompt_toolkit in place of readline"""
 from __future__ import print_function
 
 import os
 import sys
 import signal
 import unicodedata
 from warnings import warn
 from wcwidth import wcwidth
 
 from IPython.core.error import TryNext
 from IPython.core.interactiveshell import InteractiveShell
 from IPython.utils.py3compat import PY3, cast_unicode_py2, input
 from IPython.utils.terminal import toggle_set_term_title, set_term_title
 from IPython.utils.process import abbrev_cwd
 from traitlets import Bool, CBool, Unicode, Dict, Integer
 
 from prompt_toolkit.completion import Completer, Completion
 from prompt_toolkit.enums import DEFAULT_BUFFER, SEARCH_BUFFER
 from prompt_toolkit.filters import HasFocus, HasSelection, Condition
 from prompt_toolkit.history import InMemoryHistory
 from prompt_toolkit.shortcuts import create_prompt_application, create_eventloop, create_prompt_layout
 from prompt_toolkit.interface import CommandLineInterface
 from prompt_toolkit.key_binding.manager import KeyBindingManager
 from prompt_toolkit.key_binding.vi_state import InputMode
 from prompt_toolkit.key_binding.bindings.vi import ViStateFilter
 from prompt_toolkit.keys import Keys
 from prompt_toolkit.layout.lexers import Lexer
 from prompt_toolkit.layout.lexers import PygmentsLexer
 from prompt_toolkit.styles import PygmentsStyle, DynamicStyle
 
 from pygments.styles import get_style_by_name, get_all_styles
 from pygments.lexers import Python3Lexer, BashLexer, PythonLexer
 from pygments.token import Token
 
 from .pt_inputhooks import get_inputhook_func
 from .interactiveshell import get_default_editor, TerminalMagics
 
 
 class IPythonPTCompleter(Completer):
     """Adaptor to provide IPython completions to prompt_toolkit"""
     def __init__(self, ipy_completer):
         self.ipy_completer = ipy_completer
 
     def get_completions(self, document, complete_event):
         if not document.current_line.strip():
             return
 
         used, matches = self.ipy_completer.complete(
                             line_buffer=document.current_line,
                             cursor_pos=document.cursor_position_col
         )
         start_pos = -len(used)
         for m in matches:
             m = unicodedata.normalize('NFC', m)
 
             # When the first character of the completion has a zero length,
             # then it's probably a decomposed unicode character. E.g. caused by
             # the "\dot" completion. Try to compose again with the previous
             # character.
             if wcwidth(m[0]) == 0:
                 if document.cursor_position + start_pos > 0:
                     char_before = document.text[document.cursor_position + start_pos - 1]
                     m = unicodedata.normalize('NFC', char_before + m)
 
                     # Yield the modified completion instead, if this worked.
                     if wcwidth(m[0:1]) == 1:
                         yield Completion(m, start_position=start_pos - 1)
                         continue
 
+            # TODO: Use Jedi to determine meta_text
+            # (Jedi currently has a bug that results in incorrect information.)
+            # meta_text = ''
+            # yield Completion(m, start_position=start_pos,
+            #                  display_meta=meta_text)
             yield Completion(m, start_position=start_pos)
 
-
 class IPythonPTLexer(Lexer):
     """
     Wrapper around PythonLexer and BashLexer.
     """
     def __init__(self):
         self.python_lexer = PygmentsLexer(Python3Lexer if PY3 else PythonLexer)
         self.shell_lexer = PygmentsLexer(BashLexer)
 
     def lex_document(self, cli, document):
         if document.text.startswith('!'):
             return self.shell_lexer.lex_document(cli, document)
         else:
             return self.python_lexer.lex_document(cli, document)
 
 
 class TerminalInteractiveShell(InteractiveShell):
     colors_force = True
 
     space_for_menu = Integer(6, config=True, help='Number of line at the bottom of the screen '
                                                   'to reserve for the completion menu')
 
     def _space_for_menu_changed(self, old, new):
         self._update_layout()
 
     pt_cli = None
 
     autoedit_syntax = CBool(False, config=True,
                             help="auto editing of files with syntax errors.")
 
     confirm_exit = CBool(True, config=True,
         help="""
         Set to confirm when you try to exit IPython with an EOF (Control-D
         in Unix, Control-Z/Enter in Windows). By typing 'exit' or 'quit',
         you can force a direct exit without any confirmation.""",
     )
     vi_mode = Bool(False, config=True,
         help="Use vi style keybindings at the prompt",
     )
 
     mouse_support = Bool(False, config=True,
         help="Enable mouse support in the prompt"
     )
 
     highlighting_style = Unicode('default', config=True,
             help="The name of a Pygments style to use for syntax highlighting: \n %s" % ', '.join(get_all_styles())
     )
 
     def _highlighting_style_changed(self, old, new):
         self._style = self._make_style_from_name(self.highlighting_style)
 
     highlighting_style_overrides = Dict(config=True,
         help="Override highlighting format for specific tokens"
     )
 
     editor = Unicode(get_default_editor(), config=True,
         help="Set the editor used by IPython (default to $EDITOR/vi/notepad)."
     )
     
     term_title = Bool(True, config=True,
         help="Automatically set the terminal title"
     )
     def _term_title_changed(self, name, new_value):
         self.init_term_title()
     
     def init_term_title(self):
         # Enable or disable the terminal title.
         if self.term_title:
             toggle_set_term_title(True)
             set_term_title('IPython: ' + abbrev_cwd())
         else:
             toggle_set_term_title(False)
 
     def get_prompt_tokens(self, cli):
         return [
             (Token.Prompt, 'In ['),
             (Token.PromptNum, str(self.execution_count)),
             (Token.Prompt, ']: '),
         ]
 
     def get_continuation_tokens(self, cli, width):
         return [
             (Token.Prompt, (' ' * (width - 5)) + '...: '),
         ]
 
     def init_prompt_toolkit_cli(self):
         if ('IPY_TEST_SIMPLE_PROMPT' in os.environ) or not sys.stdin.isatty():
             # Fall back to plain non-interactive output for tests.
             # This is very limited, and only accepts a single line.
             def prompt():
                 return cast_unicode_py2(input('In [%d]: ' % self.execution_count))
             self.prompt_for_code = prompt
             return
 
         kbmanager = KeyBindingManager.for_prompt(enable_vi_mode=self.vi_mode)
         insert_mode = ViStateFilter(kbmanager.get_vi_state, InputMode.INSERT)
         # Ctrl+J == Enter, seemingly
         @kbmanager.registry.add_binding(Keys.ControlJ,
                             filter=(HasFocus(DEFAULT_BUFFER)
                                     & ~HasSelection()
                                     & insert_mode
                                    ))
         def _(event):
             b = event.current_buffer
             d = b.document
             if not (d.on_last_line or d.cursor_position_row >= d.line_count
                                            - d.empty_line_count_at_the_end()):
                 b.newline()
                 return
 
             status, indent = self.input_splitter.check_complete(d.text)
 
             if (status != 'incomplete') and b.accept_action.is_returnable:
                 b.accept_action.validate_and_handle(event.cli, b)
             else:
                 b.insert_text('\n' + (' ' * (indent or 0)))
 
         @kbmanager.registry.add_binding(Keys.ControlC, filter=HasFocus(DEFAULT_BUFFER))
         def _(event):
             event.current_buffer.reset()
 
         @kbmanager.registry.add_binding(Keys.ControlC, filter=HasFocus(SEARCH_BUFFER))
         def _(event):
             if event.current_buffer.document.text:
                 event.current_buffer.reset()
             else:
                 event.cli.push_focus(DEFAULT_BUFFER)
 
         supports_suspend = Condition(lambda cli: hasattr(signal, 'SIGTSTP'))
 
         @kbmanager.registry.add_binding(Keys.ControlZ, filter=supports_suspend)
         def _(event):
             event.cli.suspend_to_background()
 
         @Condition
         def cursor_in_leading_ws(cli):
             before = cli.application.buffer.document.current_line_before_cursor
             return (not before) or before.isspace()
 
         # Ctrl+I == Tab
         @kbmanager.registry.add_binding(Keys.ControlI,
                             filter=(HasFocus(DEFAULT_BUFFER)
                                     & ~HasSelection()
                                     & insert_mode
                                     & cursor_in_leading_ws
                                    ))
         def _(event):
             event.current_buffer.insert_text(' ' * 4)
 
         # Pre-populate history from IPython's history database
         history = InMemoryHistory()
         last_cell = u""
         for _, _, cell in self.history_manager.get_tail(self.history_load_length,
                                                         include_latest=True):
             # Ignore blank lines and consecutive duplicates
             cell = cell.rstrip()
             if cell and (cell != last_cell):
                 history.append(cell)
 
         self._style = self._make_style_from_name(self.highlighting_style)
         style = DynamicStyle(lambda: self._style)
 
         self._app = create_prompt_application(
                             key_bindings_registry=kbmanager.registry,
                             history=history,
                             completer=IPythonPTCompleter(self.Completer),
                             enable_history_search=True,
                             style=style,
                             mouse_support=self.mouse_support,
                             **self._layout_options()
         )
         self.pt_cli = CommandLineInterface(self._app,
                            eventloop=create_eventloop(self.inputhook))
 
     def _make_style_from_name(self, name):
         """
         Small wrapper that make an IPython compatible style from a style name
 
         We need that to add style for prompt ... etc. 
         """
         style_cls = get_style_by_name(name)
         style_overrides = {
             Token.Prompt: '#009900',
             Token.PromptNum: '#00ff00 bold',
         }
         if name is 'default':
             style_cls = get_style_by_name('default')
             # The default theme needs to be visible on both a dark background
             # and a light background, because we can't tell what the terminal
             # looks like. These tweaks to the default theme help with that.
             style_overrides.update({
                 Token.Number: '#007700',
                 Token.Operator: 'noinherit',
                 Token.String: '#BB6622',
                 Token.Name.Function: '#2080D0',
                 Token.Name.Class: 'bold #2080D0',
                 Token.Name.Namespace: 'bold #2080D0',
             })
         style_overrides.update(self.highlighting_style_overrides)
         style = PygmentsStyle.from_defaults(pygments_style_cls=style_cls,
                                             style_dict=style_overrides)
 
         return style
 
     def _layout_options(self):
         """
         Return the current layout option for the current Terminal InteractiveShell
         """
         return {
                 'lexer':IPythonPTLexer(),
                 'reserve_space_for_menu':self.space_for_menu,
                 'get_prompt_tokens':self.get_prompt_tokens,
                 'get_continuation_tokens':self.get_continuation_tokens,
                 'multiline':True,
                 }
 
 
     def _update_layout(self):
         """
         Ask for a re computation of the application layout, if for example ,
         some configuration options have changed.
         """
         self._app.layout = create_prompt_layout(**self._layout_options())
 
     def prompt_for_code(self):
         document = self.pt_cli.run(pre_run=self.pre_prompt)
         return document.text
 
     def init_io(self):
         if sys.platform not in {'win32', 'cli'}:
             return
 
         import colorama
         colorama.init()
 
         # For some reason we make these wrappers around stdout/stderr.
         # For now, we need to reset them so all output gets coloured.
         # https://github.com/ipython/ipython/issues/8669
         from IPython.utils import io
         io.stdout = io.IOStream(sys.stdout)
         io.stderr = io.IOStream(sys.stderr)
 
     def init_magics(self):
         super(TerminalInteractiveShell, self).init_magics()
         self.register_magics(TerminalMagics)
 
     def init_alias(self):
         # The parent class defines aliases that can be safely used with any
         # frontend.
         super(TerminalInteractiveShell, self).init_alias()
 
         # Now define aliases that only make sense on the terminal, because they
         # need direct access to the console in a way that we can't emulate in
         # GUI or web frontend
         if os.name == 'posix':
             for cmd in ['clear', 'more', 'less', 'man']:
                 self.alias_manager.soft_define_alias(cmd, cmd)
 
 
     def __init__(self, *args, **kwargs):
         super(TerminalInteractiveShell, self).__init__(*args, **kwargs)
         self.init_prompt_toolkit_cli()
         self.init_term_title()
         self.keep_running = True
 
     def ask_exit(self):
         self.keep_running = False
 
     rl_next_input = None
 
     def pre_prompt(self):
         if self.rl_next_input:
             self.pt_cli.application.buffer.text = cast_unicode_py2(self.rl_next_input)
             self.rl_next_input = None
 
     def interact(self):
         while self.keep_running:
             print(self.separate_in, end='')
 
             try:
                 code = self.prompt_for_code()
             except EOFError:
                 if (not self.confirm_exit) \
                         or self.ask_yes_no('Do you really want to exit ([y]/n)?','y','n'):
                     self.ask_exit()
 
             else:
                 if code:
                     self.run_cell(code, store_history=True)
                     if self.autoedit_syntax and self.SyntaxTB.last_syntax_error:
                         self.edit_syntax_error()
 
     def mainloop(self):
         # An extra layer of protection in case someone mashing Ctrl-C breaks
         # out of our internal code.
         while True:
             try:
                 self.interact()
                 break
             except KeyboardInterrupt:
                 print("\nKeyboardInterrupt escaped interact()\n")
 
     _inputhook = None
     def inputhook(self, context):
         if self._inputhook is not None:
             self._inputhook(context)
 
     def enable_gui(self, gui=None):
         if gui:
             self._inputhook = get_inputhook_func(gui)
         else:
             self._inputhook = None
 
     # Methods to support auto-editing of SyntaxErrors:
 
     def edit_syntax_error(self):
         """The bottom half of the syntax error handler called in the main loop.
 
         Loop until syntax error is fixed or user cancels.
         """
 
         while self.SyntaxTB.last_syntax_error:
             # copy and clear last_syntax_error
             err = self.SyntaxTB.clear_err_state()
             if not self._should_recompile(err):
                 return
             try:
                 # may set last_syntax_error again if a SyntaxError is raised
                 self.safe_execfile(err.filename, self.user_ns)
             except:
                 self.showtraceback()
             else:
                 try:
                     with open(err.filename) as f:
                         # This should be inside a display_trap block and I
                         # think it is.
                         sys.displayhook(f.read())
                 except:
                     self.showtraceback()
 
     def _should_recompile(self, e):
         """Utility routine for edit_syntax_error"""
 
         if e.filename in ('<ipython console>', '<input>', '<string>',
                           '<console>', '<BackgroundJob compilation>',
                           None):
             return False
         try:
             if (self.autoedit_syntax and
                     not self.ask_yes_no(
                         'Return to editor to correct syntax error? '
                         '[Y/n] ', 'y')):
                 return False
         except EOFError:
             return False
 
         def int0(x):
             try:
                 return int(x)
             except TypeError:
                 return 0
 
         # always pass integer line and offset values to editor hook
         try:
             self.hooks.fix_error_editor(e.filename,
                                         int0(e.lineno), int0(e.offset),
                                         e.msg)
         except TryNext:
             warn('Could not open editor')
             return False
         return True
 
     # Run !system commands directly, not through pipes, so terminal programs
     # work correctly.
     system = InteractiveShell.system_raw
 
 
 if __name__ == '__main__':
     TerminalInteractiveShell.instance().interact()

setup.py

@@ -1,299 +1,300 b''
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 """Setup script for IPython.
 
 Under Posix environments it works like a typical setup.py script.
 Under Windows, the command sdist is not supported, since IPython
 requires utilities which are not available under Windows."""
 
 #-----------------------------------------------------------------------------
 #  Copyright (c) 2008-2011, IPython Development Team.
 #  Copyright (c) 2001-2007, Fernando Perez <[e-mail]>
 #  Copyright (c) 2001, Janko Hauser <[e-mail]>
 #  Copyright (c) 2001, Nathaniel Gray <[e-mail]>
 #
 #  Distributed under the terms of the Modified BSD License.
 #
 #  The full license is in the file COPYING.rst, distributed with this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Minimal Python version sanity check
 #-----------------------------------------------------------------------------
 from __future__ import print_function
 
 import sys
 
 # This check is also made in IPython/__init__, don't forget to update both when
 # changing Python version requirements.
 v = sys.version_info
 if v[:2] < (2,7) or (v[0] >= 3 and v[:2] < (3,3)):
     error = "ERROR: IPython requires Python version 2.7 or 3.3 or above."
     print(error, file=sys.stderr)
     sys.exit(1)
 
 PY3 = (sys.version_info[0] >= 3)
 
 # At least we're on the python version we need, move on.
 
 #-------------------------------------------------------------------------------
 # Imports
 #-------------------------------------------------------------------------------
 
 # Stdlib imports
 import os
 
 from glob import glob
 
 # BEFORE importing distutils, remove MANIFEST. distutils doesn't properly
 # update it when the contents of directories change.
 if os.path.exists('MANIFEST'): os.remove('MANIFEST')
 
 from distutils.core import setup
 
 # Our own imports
 from setupbase import target_update
 
 from setupbase import (
     setup_args,
     find_packages,
     find_package_data,
     check_package_data_first,
     find_entry_points,
     build_scripts_entrypt,
     find_data_files,
     git_prebuild,
     install_symlinked,
     install_lib_symlink,
     install_scripts_for_symlink,
     unsymlink,
 )
 
 isfile = os.path.isfile
 pjoin = os.path.join
 
 #-------------------------------------------------------------------------------
 # Handle OS specific things
 #-------------------------------------------------------------------------------
 
 if os.name in ('nt','dos'):
     os_name = 'windows'
 else:
     os_name = os.name
 
 # Under Windows, 'sdist' has not been supported.  Now that the docs build with
 # Sphinx it might work, but let's not turn it on until someone confirms that it
 # actually works.
 if os_name == 'windows' and 'sdist' in sys.argv:
     print('The sdist command is not available under Windows.  Exiting.')
     sys.exit(1)
 
 
 #-------------------------------------------------------------------------------
 # Things related to the IPython documentation
 #-------------------------------------------------------------------------------
 
 # update the manuals when building a source dist
 if len(sys.argv) >= 2 and sys.argv[1] in ('sdist','bdist_rpm'):
 
     # List of things to be updated. Each entry is a triplet of args for
     # target_update()
     to_update = [
                  ('docs/man/ipython.1.gz',
                   ['docs/man/ipython.1'],
                   'cd docs/man && gzip -9c ipython.1 > ipython.1.gz'),
                  ]
 
 
     [ target_update(*t) for t in to_update ]
 
 #---------------------------------------------------------------------------
 # Find all the packages, package data, and data_files
 #---------------------------------------------------------------------------
 
 packages = find_packages()
 package_data = find_package_data()
 
 data_files = find_data_files()
 
 setup_args['packages'] = packages
 setup_args['package_data'] = package_data
 setup_args['data_files'] = data_files
 
 #---------------------------------------------------------------------------
 # custom distutils commands
 #---------------------------------------------------------------------------
 # imports here, so they are after setuptools import if there was one
 from distutils.command.sdist import sdist
 from distutils.command.upload import upload
 
 class UploadWindowsInstallers(upload):
 
     description = "Upload Windows installers to PyPI (only used from tools/release_windows.py)"
     user_options = upload.user_options + [
         ('files=', 'f', 'exe file (or glob) to upload')
     ]
     def initialize_options(self):
         upload.initialize_options(self)
         meta = self.distribution.metadata
         base = '{name}-{version}'.format(
             name=meta.get_name(),
             version=meta.get_version()
         )
         self.files = os.path.join('dist', '%s.*.exe' % base)
 
     def run(self):
         for dist_file in glob(self.files):
             self.upload_file('bdist_wininst', 'any', dist_file)
 
 setup_args['cmdclass'] = {
     'build_py': \
             check_package_data_first(git_prebuild('IPython')),
     'sdist' : git_prebuild('IPython', sdist),
     'upload_wininst' : UploadWindowsInstallers,
     'symlink': install_symlinked,
     'install_lib_symlink': install_lib_symlink,
     'install_scripts_sym': install_scripts_for_symlink,
     'unsymlink': unsymlink,
 }
 
 
 #---------------------------------------------------------------------------
 # Handle scripts, dependencies, and setuptools specific things
 #---------------------------------------------------------------------------
 
 # For some commands, use setuptools.  Note that we do NOT list install here!
 # If you want a setuptools-enhanced install, just run 'setupegg.py install'
 needs_setuptools = set(('develop', 'release', 'bdist_egg', 'bdist_rpm',
            'bdist', 'bdist_dumb', 'bdist_wininst', 'bdist_wheel',
            'egg_info', 'easy_install', 'upload', 'install_egg_info',
             ))
 
 if len(needs_setuptools.intersection(sys.argv)) > 0:
     import setuptools
 
 # This dict is used for passing extra arguments that are setuptools
 # specific to setup
 setuptools_extra_args = {}
 
 # setuptools requirements
 
 extras_require = dict(
     parallel = ['ipyparallel'],
     qtconsole = ['qtconsole'],
     doc = ['Sphinx>=1.3'],
-    test = ['nose>=0.10.1', 'requests', 'testpath', 'pygments'],
+    test = ['nose>=0.10.1', 'requests', 'testpath', 'pygments', 'path.py'],
     terminal = [],
     kernel = ['ipykernel'],
     nbformat = ['nbformat'],
     notebook = ['notebook', 'ipywidgets'],
     nbconvert = ['nbconvert'],
 )
 install_requires = [
     'setuptools>=18.5',
+    'jedi',
     'decorator',
     'pickleshare',
     'simplegeneric>0.8',
     'traitlets',
     'prompt_toolkit>=0.60',
     'pygments',
 ]
 
 # Platform-specific dependencies:
 # This is the correct way to specify these,
 # but requires pip >= 6. pip < 6 ignores these.
 
 extras_require.update({
     ':python_version == "2.7"': ['backports.shutil_get_terminal_size'],
     ':python_version == "2.7" or python_version == "3.3"': ['pathlib2'],
     ':sys_platform != "win32"': ['pexpect'],
     ':sys_platform == "darwin"': ['appnope'],
     ':sys_platform == "win32"': ['colorama'],
     'test:python_version == "2.7"': ['mock'],
 })
 # FIXME: re-specify above platform dependencies for pip < 6
 # These would result in non-portable bdists.
 if not any(arg.startswith('bdist') for arg in sys.argv):
     if sys.version_info < (3, 3):
         extras_require['test'].append('mock')
 
     if sys.platform == 'darwin':
         install_requires.extend(['appnope'])
         have_readline = False
         try:
             import readline
         except ImportError:
             pass
         else:
             if 'libedit' not in readline.__doc__:
                 have_readline = True
         if not have_readline:
             install_requires.extend(['gnureadline'])
 
     if sys.platform.startswith('win'):
         extras_require['terminal'].append('pyreadline>=2.0')
     else:
         install_requires.append('pexpect')
     
     # workaround pypa/setuptools#147, where setuptools misspells
     # platform_python_implementation as python_implementation
     if 'setuptools' in sys.modules:
         for key in list(extras_require):
             if 'platform_python_implementation' in key:
                 new_key = key.replace('platform_python_implementation', 'python_implementation')
                 extras_require[new_key] = extras_require.pop(key)
 
 everything = set()
 for key, deps in extras_require.items():
     if ':' not in key:
         everything.update(deps)
 extras_require['all'] = everything
 
 if 'setuptools' in sys.modules:
     setuptools_extra_args['zip_safe'] = False
     setuptools_extra_args['entry_points'] = {
         'console_scripts': find_entry_points(),
         'pygments.lexers': [
             'ipythonconsole = IPython.lib.lexers:IPythonConsoleLexer',
             'ipython = IPython.lib.lexers:IPythonLexer',
             'ipython3 = IPython.lib.lexers:IPython3Lexer',
         ],
     }
     setup_args['extras_require'] = extras_require
     requires = setup_args['install_requires'] = install_requires
 
     # Script to be run by the windows binary installer after the default setup
     # routine, to add shortcuts and similar windows-only things.  Windows
     # post-install scripts MUST reside in the scripts/ dir, otherwise distutils
     # doesn't find them.
     if 'bdist_wininst' in sys.argv:
         if len(sys.argv) > 2 and \
                ('sdist' in sys.argv or 'bdist_rpm' in sys.argv):
             print("ERROR: bdist_wininst must be run alone. Exiting.", file=sys.stderr)
             sys.exit(1)
         setup_args['data_files'].append(
             ['Scripts', ('scripts/ipython.ico', 'scripts/ipython_nb.ico')])
         setup_args['scripts'] = [pjoin('scripts','ipython_win_post_install.py')]
         setup_args['options'] = {"bdist_wininst":
                                  {"install_script":
                                   "ipython_win_post_install.py"}}
 
 else:
     # scripts has to be a non-empty list, or install_scripts isn't called
     setup_args['scripts'] = [e.split('=')[0].strip() for e in find_entry_points()]
 
     setup_args['cmdclass']['build_scripts'] = build_scripts_entrypt
 
 #---------------------------------------------------------------------------
 # Do the actual setup now
 #---------------------------------------------------------------------------
 
 setup_args.update(setuptools_extra_args)
 
 
 
 def main():
     setup(**setup_args)
 
 if __name__ == '__main__':
     main()