fix problems of the last 10 commits

jedi/evaluate.py

@@ -8,7 +8,6 @@ search functions `get_names_for_scope` and `get_scopes_for_name`. At the end
 there are the `follow_` functions, which evaluate a statement, or parts of a
 statement.
 
-TODO super()
 TODO nonlocal statement, needed or can be ignored? (py3k)
 """
 from _compatibility import next, property, hasattr, is_py3k, use_metaclass, \
@@ -842,7 +841,7 @@ class Array(use_metaclass(cache.CachedMetaClass, parsing.Base)):
 
     def __getattr__(self, name):
         if name not in ['type', 'start_pos', 'get_only_subelement']:
-            raise AttributeError('Strange access: %s.' % name)
+            raise AttributeError('Strange access on %s: %s.' % (self, name))
         return getattr(self._array, name)
 
     def __repr__(self):

jedi/helpers.py

@@ -218,7 +218,7 @@ def scan_array_for_pos(arr, pos, overwrite_after=False):
         call = None
         for s in sub:
             if isinstance(s, parsing.Array):
-                new = scan_array_for_pos(s, pos)
+                new = scan_array_for_pos(s, pos, overwrite_after)
                 if new[0] is not None:
                     call, index, stop = new
                     if stop:
@@ -234,7 +234,7 @@ def scan_array_for_pos(arr, pos, overwrite_after=False):
                         if s.execution.start_pos < pos and \
                                 (None in end or pos < end):
                             c, index, stop = scan_array_for_pos(
-                                                    s.execution, pos)
+                                            s.execution, pos, overwrite_after)
                             if stop:
                                 return c, index, stop
 

jedi/modules.py

@@ -196,6 +196,8 @@ class ModuleWithCursor(Module):
     def get_line(self, line_nr):
         if not self._line_cache:
             self._line_cache = self.source.splitlines()
+            if not self.source:  # ''.splitlines() == []
+                self._line_cache = [self.source]
 
         if line_nr == 0:
             # This is a fix for the zeroth line. We need a newline there, for