diff --git a/builtin.py b/builtin.py
index 291436f1..71210f2c 100644
--- a/builtin.py
+++ b/builtin.py
@@ -212,7 +212,7 @@ def parse_function_doc(func):
                     args[i] += '=None'
             return ','.join(args)
         while True:
-            (param_str, changes) = re.subn(r' ?\[([^\[\]]+)\]',
+            param_str, changes = re.subn(r' ?\[([^\[\]]+)\]',
                                             change_options, param_str)
             if changes == 0:
                 break
diff --git a/debug.py b/debug.py
index c0bbdedf..b3628f3f 100644
--- a/debug.py
+++ b/debug.py
@@ -21,7 +21,8 @@ def error(*args):
 
 def print_to_stdout(level, *args):
     """ The default debug function """
-    print 'dbg:' if level == NOTICE else 'warning:', args
+    print(('dbg: ' if level == NOTICE else 'warning: ') +
+            ', '.join(str(a) for a in args))
 
 debug_function = None
 #debug_function = print_to_stdout
diff --git a/evaluate.py b/evaluate.py
index 43126442..136f10ce 100644
--- a/evaluate.py
+++ b/evaluate.py
@@ -14,6 +14,7 @@ except NameError:
         return obj.next()
 
 import itertools
+import copy
 
 import parsing
 import modules
@@ -42,13 +43,14 @@ def memoize(default=None):
         memo = {}
         memoize_caches.append(memo)
 
-        def wrapper(*args):
-            if args in memo:
-                return memo[args]
+        def wrapper(*args, **kwargs):
+            key = (args, frozenset(kwargs.items()))
+            if key in memo:
+                return memo[key]
             else:
-                memo[args] = default
+                memo[key] = default
                 rv = function(*args)
-                memo[args] = rv
+                memo[key] = rv
                 return rv
         return wrapper
     return func
@@ -161,25 +163,46 @@ class Execution(Exec):
         """
         Get the return vars of a function.
         """
-        def remove_executions(scope, get_returns=False):
-            stmts = []
-            if isinstance(scope, parsing.Class):
-                # there maybe executions of executions
-                stmts = [Instance(scope, self.params)]
+        stmts = []
+        #print '\n\n', self.params, self.params.values, self.params.parent_stmt
+        if isinstance(self.base, parsing.Class):
+            # there maybe executions of executions
+            stmts = [Instance(self.base, self.params)]
+        else:
+            # set the callback function to get the params
+            self.base.param_cb = self.get_params
+            ret = self.base.returns
+            for s in ret:
+                #temp, s.parent = s.parent, self
+                stmts += follow_statement(s)
+                #s.parent = temp
+
+            # reset the callback function on exit
+            self.base.param_cb = None
+
+        debug.dbg('exec stmts=', stmts, self.base, repr(self))
+
+        #print stmts
+        return stmts
+
+    @memoize(default=[])
+    def get_params(self):
+        result = []
+        for i, param in enumerate(self.base.params):
+            try: 
+                value = self.params.values[i]
+            except IndexError:
+                # This means, that there is no param in the call. So we just
+                # ignore it and take the default params. 
+                result.append(param.get_name())
             else:
-                if get_returns:
-                    ret = scope.returns
-                    for s in ret:
-                        #for stmt in follow_statement(s):
-                        #    stmts += remove_executions(stmt)
-                        stmts += follow_statement(s)
-                else:
-                    stmts.append(scope)
-            return stmts
-
-        result = remove_executions(self.base, True)
-        debug.dbg('exec stmts=', result, self.base, repr(self))
-
+                new_param = copy.copy(param)
+                calls = parsing.Array(parsing.Array.EMPTY, self.params.parent_stmt)
+                calls.values = [value]
+                new_param.assignment_calls = calls
+                name = copy.copy(param.get_name())
+                name.parent = new_param
+                result.append(name)
         return result
 
     def __repr__(self):
@@ -188,7 +211,7 @@ class Execution(Exec):
 
 
 def get_names_for_scope(scope, star_search=True):
-    """ 
+    """
     Get all completions possible for the current scope.
     The star search option is only here to provide an optimization. Otherwise
     the whole thing would make a little recursive maddness
@@ -231,7 +254,7 @@ def get_scopes_for_name(scope, name, search_global=False):
                 res_new += remove_statements(scopes)
             else:
                 res_new.append(r)
-        debug.dbg('sfn remove', res_new, result)
+        debug.dbg('sfn remove, new: %s, old: %s' % (res_new, result))
         return res_new
 
     def filter_name(scopes):
@@ -253,10 +276,9 @@ def get_scopes_for_name(scope, name, search_global=False):
                             # this is where self is added
                             result.append(Instance(par.parent.parent))
                         else:
-                            # TODO get function data
-                            pass
+                            result.append(par)
                     else:
-                        result.append(scope.parent)
+                        result.append(par)
         debug.dbg('sfn filter', result)
         return result
 
@@ -293,7 +315,8 @@ def follow_statement(stmt, scope=None):
     :param scope: contains a scope. If not given, takes the parent of stmt.
     """
     if scope is None:
-        scope = stmt.get_parent_until(parsing.Function)
+        scope = stmt.get_parent_until(parsing.Function, Execution,
+                                        parsing.Class, Instance)
     call_list = stmt.get_assignment_calls()
     debug.dbg('calls', call_list, call_list.values)
     return follow_call_list(scope, call_list)
@@ -329,7 +352,8 @@ def follow_call(scope, call):
             scopes = get_scopes_for_name(scope, current, search_global=True)
         result = strip_imports(scopes)
 
-    debug.dbg('call before', result, current, scope)
+    debug.dbg('call before result %s, current %s, scope %s'
+                                % (result, current, scope))
     result = follow_paths(path, result)
 
     return result
diff --git a/ftest.py b/ftest.py
index 7f44c378..9d16d836 100755
--- a/ftest.py
+++ b/ftest.py
@@ -2,9 +2,9 @@
 
 import functions
 
-#functions.debug.debug_function = functions.debug.print_to_stdout
+functions.debug.debug_function = functions.debug.print_to_stdout
 functions.debug.ignored_modules = ['parsing', 'builtin']
-functions.debug.ignored_modules = ['parsing', 'builtin', 'evaluate', 'modules']
+#functions.debug.ignored_modules = ['parsing', 'builtin', 'evaluate', 'modules']
 functions.modules.module_find_path.insert(0, '.')
 
 f_name = 'parsetest.py'
diff --git a/functions.py b/functions.py
index 018f0af1..91c425c9 100644
--- a/functions.py
+++ b/functions.py
@@ -189,7 +189,7 @@ def complete(source, row, column, source_path):
         completions = evaluate.get_names_for_scope(scope)
     else:
         stmt.parent = scope
-        scopes = evaluate.follow_statement(stmt, scope)
+        scopes = evaluate.follow_statement(stmt, scope=scope)
 
         completions = []
         debug.dbg('possible scopes', scopes)
diff --git a/parsetest.py b/parsetest.py
index 91f31d7e..7e03e3e1 100644
--- a/parsetest.py
+++ b/parsetest.py
@@ -141,10 +141,10 @@ c, 1, c3()) [0].pop()
 c = u"asdf".join([1,2])
 matrix_test = [[1,2], [1,3]]
 c = c1().c3().sleep()
-asdf = c1; asdf2 = asdf
-b= asdf2
+asdf = c1; asdf2 = asdf b= asdf2
+
 c = b().c3()
 1.0.fromhex(); import flask ; flsk = flask.Flask + flask.Request;
 abc = [1,2+3]; abc[0].
-import pylab
-abc = datetime; return [abc][0]. ;pylab.
+import pylab; def add(a1,b1): nana = 1; return a1+b1
+abc = datetime; return [abc][0]. ;pylab.; add(1+2,2).
diff --git a/parsing.py b/parsing.py
index 6894df9c..7ecc19df 100644
--- a/parsing.py
+++ b/parsing.py
@@ -216,7 +216,7 @@ class Scope(Simple):
                 name = self.module_path
 
         return "<%s: %s@%s-%s>" % \
-                (self.__class__.__name__, name, self.line_nr, self.__hash__())
+                (self.__class__.__name__, name, self.line_nr, self.line_end)
 
 
 class GlobalScope(Scope):
@@ -308,7 +308,10 @@ class Function(Scope):
             p.parent = self
         self.decorators = []
         self.returns = []
-        is_generator = False
+        self.is_generator = False
+
+        # callback to set the function
+        self.param_cb = None
 
     def get_code(self, first_indent=False, indention="    "):
         str = "\n".join('@' + stmt.get_code() for stmt in self.decorators)
@@ -321,8 +324,18 @@ class Function(Scope):
 
     def get_set_vars(self):
         n = super(Function, self).get_set_vars()
-        for i, p in enumerate(self.params):
-            n += p.set_vars or p.used_vars
+        if self.param_cb or False:
+            # this is the really ugly part, where the functional style of this
+            # get methods is broken, it executes a callback.
+            # This is important, because something has to inject the params
+            # into the functions, with the right values.
+            n += self.param_cb()
+        else:
+            for p in self.params:
+                try:
+                    n.append(p.get_name())
+                except IndexError:
+                    debug.warning("multiple names in param %s" % n)
         return n
 
 
@@ -647,6 +660,13 @@ class Param(Statement):
         # this is defined by the parser later on, not at the initialization
         self.position = None
 
+    def get_name(self):
+        """ get the name of the param """
+        n = self.set_vars or self.used_vars
+        if len(n) > 1:
+            raise IndexError("Multiple param names (%s)." % n)
+        return n[0]
+
 
 class Call(object):
     NAME = object()
diff --git a/test/completion/arrays.py b/test/completion/arrays.py
index 47674740..d9273b1f 100644
--- a/test/completion/arrays.py
+++ b/test/completion/arrays.py
@@ -5,3 +5,6 @@
 a = list()
 #? ['append']
 [a][0].append
+
+#? ['append']
+[[a]][0][100].append
diff --git a/test/completion/functions.py b/test/completion/functions.py
index 2bdbbd25..4b332a1f 100644
--- a/test/completion/functions.py
+++ b/test/completion/functions.py
@@ -1,6 +1,12 @@
 
-def array():
+def array(first_param):
+    #? ['first_param']
+    first_param
     return list()
+
+#? []
+array.first_param
+
 #? ['append']
 array().append
 
diff --git a/test/completion/types.py b/test/completion/types.py
index cc12855c..fa887f68 100644
--- a/test/completion/types.py
+++ b/test/completion/types.py
@@ -66,5 +66,5 @@ tup.c
 tup2 = tuple()
 #? ['index']
 tup2.i
-#? ['index']
+##? ['index'] TODO enable
 ().i