diff --git a/IPython/Extensions/astyle.py b/IPython/Extensions/astyle.py
index 782a33c..9821d58 100644
--- a/IPython/Extensions/astyle.py
+++ b/IPython/Extensions/astyle.py
@@ -61,9 +61,11 @@ class Style(object):
         ``bg`` as the background color and ``attrs`` as the attributes.
 
         Examples:
+        >>> Style(COLOR_RED, COLOR_BLACK)
+        <Style fg=red bg=black attrs=0>
 
-            >>> Style(COLOR_RED, COLOR_BLACK)
-            >>> Style(COLOR_YELLOW, COLOR_BLUE, A_BOLD|A_UNDERLINE)
+        >>> Style(COLOR_YELLOW, COLOR_BLUE, A_BOLD|A_UNDERLINE)
+        <Style fg=yellow bg=blue attrs=bold|underline>
         """
         self.fg = fg
         self.bg = bg
diff --git a/IPython/Extensions/ipipe.py b/IPython/Extensions/ipipe.py
index 1d2eedf..e76e0c3 100644
--- a/IPython/Extensions/ipipe.py
+++ b/IPython/Extensions/ipipe.py
@@ -83,6 +83,8 @@ three extensions points (all of them optional):
       maxunicode |0xffff
 """
 
+skip_doctest = True  # ignore top-level docstring as a doctest.
+
 import sys, os, os.path, stat, glob, new, csv, datetime, types
 import itertools, mimetypes, StringIO
 
@@ -123,8 +125,7 @@ except ImportError:
     grp = None
 
 from IPython.external import simplegeneric
-
-import path
+from IPython.external import path
 
 try:
     from IPython import genutils, generics
@@ -1210,8 +1211,12 @@ class ils(Table):
     Examples::
 
         >>> ils
+        <class 'IPython.Extensions.ipipe.ils'>
         >>> ils("/usr/local/lib/python2.4")
+        IPython.Extensions.ipipe.ils('/usr/local/lib/python2.4')
         >>> ils("~")
+        IPython.Extensions.ipipe.ils('/home/fperez')
+        # all-random
     """
     def __init__(self, base=os.curdir, dirs=True, files=True):
         self.base = os.path.expanduser(base)
@@ -1248,6 +1253,7 @@ class iglob(Table):
     Examples::
 
         >>> iglob("*.py")
+        IPython.Extensions.ipipe.iglob('*.py')
     """
     def __init__(self, glob):
         self.glob = glob
@@ -1273,8 +1279,12 @@ class iwalk(Table):
     List all files and directories in a directory and it's subdirectory::
 
         >>> iwalk
-        >>> iwalk("/usr/local/lib/python2.4")
+        <class 'IPython.Extensions.ipipe.iwalk'>
+        >>> iwalk("/usr/lib")
+        IPython.Extensions.ipipe.iwalk('/usr/lib')
         >>> iwalk("~")
+        IPython.Extensions.ipipe.iwalk('/home/fperez')  # random
+        
     """
     def __init__(self, base=os.curdir, dirs=True, files=True):
         self.base = os.path.expanduser(base)
@@ -1378,6 +1388,8 @@ class ipwd(Table):
     Example::
 
         >>> ipwd | isort("uid")
+        <IPython.Extensions.ipipe.isort key='uid' reverse=False at 0x849efec>
+        # random
     """
     def __iter__(self):
         for entry in pwd.getpwall():
@@ -1562,6 +1574,7 @@ class ienv(Table):
     Example::
 
         >>> ienv
+        <class 'IPython.Extensions.ipipe.ienv'>
     """
 
     def __iter__(self):
@@ -1583,7 +1596,9 @@ class ihist(Table):
     Example::
 
         >>> ihist
-        >>> ihist(True) (raw mode)
+        <class 'IPython.Extensions.ipipe.ihist'>
+        >>> ihist(True) # raw mode
+        <IPython.Extensions.ipipe.ihist object at 0x849602c>  # random
     """
     def __init__(self, raw=True):
         self.raw = raw
@@ -1618,6 +1633,7 @@ class ialias(Table):
     Example::
 
         >>> ialias
+        <class 'IPython.Extensions.ipipe.ialias'>
     """
     def __iter__(self):
         api = ipapi.get()
@@ -1680,7 +1696,11 @@ class ix(Table):
     Examples::
 
         >>> ix("ps x")
+        IPython.Extensions.ipipe.ix('ps x')
+
         >>> ix("find .") | ifile
+        <IPython.Extensions.ipipe.ieval expr=<class 'IPython.Extensions.ipipe.ifile'> at 0x8509d2c>
+        # random
     """
     def __init__(self, cmd):
         self.cmd = cmd
@@ -1721,6 +1741,7 @@ class ifilter(Pipe):
         >>> ils | ifilter("_.isfile() and size>1000")
         >>> igrp | ifilter("len(mem)")
         >>> sys.modules | ifilter(lambda _:_.value is not None)
+        # all-random
     """
 
     def __init__(self, expr, globals=None, errors="raiseifallfail"):
@@ -1811,7 +1832,9 @@ class ieval(Pipe):
     Examples::
 
         >>> ils | ieval("_.abspath()")
+        # random
         >>> sys.path | ieval(ifile)
+        # random
     """
 
     def __init__(self, expr, globals=None, errors="raiseifallfail"):
@@ -1884,6 +1907,8 @@ class ienum(Pipe):
 
         >>> xrange(20) | ieval("_,_*_") | ienum | ifilter("index % 2 == 0") | ieval("object")
     """
+    skip_doctest = True
+    
     def __iter__(self):
         fields = ("index", "object")
         for (index, object) in enumerate(xiter(self.input)):
@@ -1897,7 +1922,10 @@ class isort(Pipe):
     Examples::
 
         >>> ils | isort("size")
+        <IPython.Extensions.ipipe.isort key='size' reverse=False at 0x849ec2c>
         >>> ils | isort("_.isdir(), _.lower()", reverse=True)
+        <IPython.Extensions.ipipe.isort key='_.isdir(), _.lower()' reverse=True at 0x849eacc>
+        # all-random
     """
 
     def __init__(self, key=None, globals=None, reverse=False):
@@ -2058,6 +2086,8 @@ class icap(Table):
         >>> icap("for i in range(10): print i, time.sleep(0.1)")
 
     """
+    skip_doctest = True
+    
     def __init__(self, expr, globals=None):
         self.expr = expr
         self.globals = globals
diff --git a/IPython/Extensions/ipy_leo.py b/IPython/Extensions/ipy_leo.py
index 124292a..934bc64 100644
--- a/IPython/Extensions/ipy_leo.py
+++ b/IPython/Extensions/ipy_leo.py
@@ -174,23 +174,15 @@ class LeoNode(object, UserDict.DictMixin):
     
     def __get_h(self): return self.p.headString()
     def __set_h(self,val):
-        print "set head",val
-        c.beginUpdate() 
-        try:
-            c.setHeadString(self.p,val)
-        finally:
-            c.endUpdate()
+        c.setHeadString(self.p,val)
+        c.redraw()
         
     h = property( __get_h, __set_h, doc = "Node headline string")  
 
     def __get_b(self): return self.p.bodyString()
     def __set_b(self,val):
-        print "set body",val
-        c.beginUpdate()
-        try: 
-            c.setBodyString(self.p, val)
-        finally:
-            c.endUpdate()
+        c.setBodyString(self.p, val)
+        c.redraw()
     
     b = property(__get_b, __set_b, doc = "Nody body string")
     
@@ -265,11 +257,8 @@ class LeoNode(object, UserDict.DictMixin):
         
     def go(self):
         """ Set node as current node (to quickly see it in Outline) """
-        c.beginUpdate()
-        try:
-            c.setCurrentPosition(self.p)
-        finally:
-            c.endUpdate()  
+        c.setCurrentPosition(self.p)
+        c.redraw()
         
     def script(self):
         """ Method to get the 'tangled' contents of the node
@@ -337,7 +326,6 @@ def workbook_complete(obj, prev):
     
 
 def add_var(varname):
-    c.beginUpdate()
     r = rootnode()
     try:
         if r is None:
@@ -356,7 +344,7 @@ def add_var(varname):
         c.setHeadString(p2,varname)
         return LeoNode(p2)
     finally:
-        c.endUpdate()
+        c.redraw()
 
 def add_file(self,fname):
     p2 = c.currentPosition().insertAfter()
@@ -368,7 +356,6 @@ def expose_ileo_push(f, prio = 0):
 
 def push_ipython_script(node):
     """ Execute the node body in IPython, as if it was entered in interactive prompt """
-    c.beginUpdate()
     try:
         ohist = ip.IP.output_hist 
         hstart = len(ip.IP.input_hist)
@@ -393,7 +380,7 @@ def push_ipython_script(node):
         if not has_output:
             es('ipy run: %s (%d LL)' %( node.h,len(script)))
     finally:
-        c.endUpdate()
+        c.redraw()
 
     
 def eval_body(body):
@@ -495,7 +482,6 @@ def lee_f(self,s):
     """
     import os
         
-    c.beginUpdate()
     try:
         if s == 'hist':
             wb.ipython_history.b = get_history()
@@ -533,7 +519,7 @@ def lee_f(self,s):
             c.selectPosition(p)
         print "Editing file(s), press ctrl+shift+w in Leo to write @auto nodes"
     finally:
-        c.endUpdate()
+        c.redraw()
 
 
 
diff --git a/IPython/Magic.py b/IPython/Magic.py
index f1c0162..f416884 100644
--- a/IPython/Magic.py
+++ b/IPython/Magic.py
@@ -61,6 +61,8 @@ from IPython import platutils
 import IPython.generics
 import IPython.ipapi
 from IPython.ipapi import UsageError
+from IPython.testing import decorators as testdec
+
 #***************************************************************************
 # Utility functions
 def on_off(tag):
@@ -522,7 +524,7 @@ Currently the magic system has the following functions:\n"""
             rc.automagic = not rc.automagic
         print '\n' + Magic.auto_status[rc.automagic]
 
-
+    @testdec.skip_doctest
     def magic_autocall(self, parameter_s = ''):
         """Make functions callable without having to type parentheses.
 
@@ -551,8 +553,9 @@ Currently the magic system has the following functions:\n"""
         2 -> Active always.  Even if no arguments are present, the callable
         object is called:
 
-        In [4]: callable
-        ------> callable()
+        In [2]: float
+        ------> float()
+        Out[2]: 0.0
 
         Note that even with autocall off, you can still use '/' at the start of
         a line to treat the first argument on the command line as a function
@@ -561,6 +564,8 @@ Currently the magic system has the following functions:\n"""
         In [8]: /str 43
         ------> str(43)
         Out[8]: '43'
+
+        # all-random (note for auto-testing)
         """
 
         rc = self.shell.rc
@@ -1243,12 +1248,13 @@ Currently the magic system has the following functions:\n"""
         
         self.shell.debugger(force=True)
 
+    @testdec.skip_doctest
     def magic_prun(self, parameter_s ='',user_mode=1,
                    opts=None,arg_lst=None,prog_ns=None):
 
         """Run a statement through the python code profiler.
 
-        Usage:\\
+        Usage:
           %prun [options] statement
 
         The given statement (which doesn't require quote marks) is run via the
@@ -1293,16 +1299,16 @@ Currently the magic system has the following functions:\n"""
         abbreviation is unambiguous.  The following are the keys currently
         defined:
 
-                Valid Arg       Meaning\\
-                  "calls"      call count\\
-                  "cumulative" cumulative time\\
-                  "file"       file name\\
-                  "module"     file name\\
-                  "pcalls"     primitive call count\\
-                  "line"       line number\\
-                  "name"       function name\\
-                  "nfl"        name/file/line\\
-                  "stdname"    standard name\\
+                Valid Arg       Meaning
+                  "calls"      call count
+                  "cumulative" cumulative time
+                  "file"       file name
+                  "module"     file name
+                  "pcalls"     primitive call count
+                  "line"       line number
+                  "name"       function name
+                  "nfl"        name/file/line
+                  "stdname"    standard name
                   "time"       internal time
 
         Note that all sorts on statistics are in descending order (placing
@@ -1328,8 +1334,10 @@ Currently the magic system has the following functions:\n"""
         '%run -p [prof_opts] filename.py [args to program]' where prof_opts
         contains profiler specific options as described here.
         
-        You can read the complete documentation for the profile module with:\\
-          In [1]: import profile; profile.help() """
+        You can read the complete documentation for the profile module with::
+        
+          In [1]: import profile; profile.help()
+        """
 
         opts_def = Struct(D=[''],l=[],s=['time'],T=[''])
         # protect user quote marks
@@ -1413,6 +1421,7 @@ Currently the magic system has the following functions:\n"""
         else:
             return None
 
+    @testdec.skip_doctest
     def magic_run(self, parameter_s ='',runner=None):
         """Run the named file inside IPython as a program.
 
@@ -1575,12 +1584,16 @@ Currently the magic system has the following functions:\n"""
 
         # pickle fix.  See iplib for an explanation.  But we need to make sure
         # that, if we overwrite __main__, we replace it at the end
-        if prog_ns['__name__'] == '__main__':
+        main_mod_name = prog_ns['__name__']
+
+        if main_mod_name == '__main__':
             restore_main = sys.modules['__main__']
         else:
             restore_main = False
 
-        sys.modules[prog_ns['__name__']] = main_mod
+        # This needs to be undone at the end to prevent holding references to
+        # every single object ever created.
+        sys.modules[main_mod_name] = main_mod
         
         stats = None
         try:
@@ -1673,9 +1686,15 @@ Currently the magic system has the following functions:\n"""
                     del prog_ns['__name__']
                     self.shell.user_ns.update(prog_ns)
         finally:
+            # Ensure key global structures are restored
             sys.argv = save_argv
             if restore_main:
                 sys.modules['__main__'] = restore_main
+            else:
+                # Remove from sys.modules the reference to main_mod we'd
+                # added.  Otherwise it will trap references to objects
+                # contained therein.
+                del sys.modules[main_mod_name]
             self.shell.reloadhist()
                 
         return stats
@@ -1699,6 +1718,7 @@ Currently the magic system has the following functions:\n"""
             self.shell.safe_execfile(f,self.shell.user_ns,
                                      self.shell.user_ns,islog=1)
 
+    @testdec.skip_doctest
     def magic_timeit(self, parameter_s =''):
         """Time execution of a Python statement or expression
 
@@ -1726,7 +1746,8 @@ Currently the magic system has the following functions:\n"""
         Default: 3
 
         
-        Examples:\\
+        Examples:
+
           In [1]: %timeit pass
           10000000 loops, best of 3: 53.3 ns per loop
 
@@ -1755,7 +1776,7 @@ Currently the magic system has the following functions:\n"""
         import timeit
         import math
 
-        units = ["s", "ms", "\xc2\xb5s", "ns"]
+        units = [u"s", u"ms", u"\xb5s", u"ns"]
         scaling = [1, 1e3, 1e6, 1e9]
 
         opts, stmt = self.parse_options(parameter_s,'n:r:tcp:',
@@ -1804,13 +1825,14 @@ Currently the magic system has the following functions:\n"""
             order = min(-int(math.floor(math.log10(best)) // 3), 3)
         else:
             order = 3
-        print "%d loops, best of %d: %.*g %s per loop" % (number, repeat,
+        print u"%d loops, best of %d: %.*g %s per loop" % (number, repeat,
                                                           precision,
                                                           best * scaling[order],
                                                           units[order])
         if tc > tc_min:
             print "Compiler time: %.2f s" % tc
-        
+
+    @testdec.skip_doctest
     def magic_time(self,parameter_s = ''):
         """Time execution of a Python statement or expression.
 
@@ -1902,6 +1924,7 @@ Currently the magic system has the following functions:\n"""
             print "Compiler : %.2f s" % tc
         return out
 
+    @testdec.skip_doctest
     def magic_macro(self,parameter_s = ''):
         """Define a set of input lines as a macro for future re-execution.
 
@@ -1931,17 +1954,17 @@ Currently the magic system has the following functions:\n"""
 
         For example, if your history contains (%hist prints it):
         
-          44: x=1\\
-          45: y=3\\
-          46: z=x+y\\
-          47: print x\\
-          48: a=5\\
-          49: print 'x',x,'y',y\\
+          44: x=1
+          45: y=3
+          46: z=x+y
+          47: print x
+          48: a=5
+          49: print 'x',x,'y',y
 
         you can create a macro with lines 44 through 47 (included) and line 49
         called my_macro with:
 
-          In [51]: %macro my_macro 44-47 49
+          In [55]: %macro my_macro 44-47 49
 
         Now, typing `my_macro` (without quotes) will re-execute all this code
         in one pass.
@@ -2033,6 +2056,7 @@ Currently the magic system has the following functions:\n"""
         """Alias to %edit."""
         return self.magic_edit(parameter_s)
 
+    @testdec.skip_doctest
     def magic_edit(self,parameter_s='',last_call=['','']):
         """Bring up an editor and execute the resulting code.
 
@@ -2126,47 +2150,47 @@ Currently the magic system has the following functions:\n"""
         This is an example of creating a simple function inside the editor and
         then modifying it. First, start up the editor:
 
-        In [1]: ed\\
-        Editing... done. Executing edited code...\\
-        Out[1]: 'def foo():\\n    print "foo() was defined in an editing session"\\n'
+        In [1]: ed
+        Editing... done. Executing edited code...
+        Out[1]: 'def foo():n    print "foo() was defined in an editing session"n'
 
         We can then call the function foo():
         
-        In [2]: foo()\\
+        In [2]: foo()
         foo() was defined in an editing session
 
         Now we edit foo.  IPython automatically loads the editor with the
         (temporary) file where foo() was previously defined:
         
-        In [3]: ed foo\\
+        In [3]: ed foo
         Editing... done. Executing edited code...
 
         And if we call foo() again we get the modified version:
         
-        In [4]: foo()\\
+        In [4]: foo()
         foo() has now been changed!
 
         Here is an example of how to edit a code snippet successive
         times. First we call the editor:
 
-        In [8]: ed\\
-        Editing... done. Executing edited code...\\
-        hello\\
-        Out[8]: "print 'hello'\\n"
+        In [5]: ed
+        Editing... done. Executing edited code...
+        hello
+        Out[5]: "print 'hello'n"
 
         Now we call it again with the previous output (stored in _):
 
-        In [9]: ed _\\
-        Editing... done. Executing edited code...\\
-        hello world\\
-        Out[9]: "print 'hello world'\\n"
+        In [6]: ed _
+        Editing... done. Executing edited code...
+        hello world
+        Out[6]: "print 'hello world'n"
 
         Now we call it with the output #8 (stored in _8, also as Out[8]):
 
-        In [10]: ed _8\\
-        Editing... done. Executing edited code...\\
-        hello again\\
-        Out[10]: "print 'hello again'\\n"
+        In [7]: ed _8
+        Editing... done. Executing edited code...
+        hello again
+        Out[7]: "print 'hello again'n"
 
 
         Changing the default editor hook:
@@ -2463,7 +2487,8 @@ Defaulting color scheme to 'NoColor'"""
 
     #......................................................................
     # Functions to implement unix shell-type things
-    
+
+    @testdec.skip_doctest
     def magic_alias(self, parameter_s = ''):
         """Define an alias for a system command.
 
@@ -2479,18 +2504,18 @@ Defaulting color scheme to 'NoColor'"""
         You can use the %l specifier in an alias definition to represent the
         whole line when the alias is called.  For example:
 
-          In [2]: alias all echo "Input in brackets: <%l>"\\
-          In [3]: all hello world\\
+          In [2]: alias all echo "Input in brackets: <%l>"
+          In [3]: all hello world
           Input in brackets: <hello world>
 
         You can also define aliases with parameters using %s specifiers (one
         per parameter):
         
-          In [1]: alias parts echo first %s second %s\\
-          In [2]: %parts A B\\
-          first A second B\\
-          In [3]: %parts A\\
-          Incorrect number of arguments: 2 expected.\\
+          In [1]: alias parts echo first %s second %s
+          In [2]: %parts A B
+          first A second B
+          In [3]: %parts A
+          Incorrect number of arguments: 2 expected.
           parts is an alias to: 'echo first %s second %s'
 
         Note that %l and %s are mutually exclusive.  You can only use one or
@@ -2503,11 +2528,11 @@ Defaulting color scheme to 'NoColor'"""
         IPython for variable expansion.  If you want to access a true shell
         variable, an extra $ is necessary to prevent its expansion by IPython:
 
-        In [6]: alias show echo\\
-        In [7]: PATH='A Python string'\\
-        In [8]: show $PATH\\
-        A Python string\\
-        In [9]: show $$PATH\\
+        In [6]: alias show echo
+        In [7]: PATH='A Python string'
+        In [8]: show $PATH
+        A Python string
+        In [9]: show $$PATH
         /usr/local/lf9560/bin:/usr/local/intel/compiler70/ia32/bin:...
 
         You can use the alias facility to acess all of $PATH.  See the %rehash
@@ -2822,7 +2847,7 @@ Defaulting color scheme to 'NoColor'"""
                 header = 'Directory history (kept in _dh)',
                 start=ini,stop=fin)
 
-
+    @testdec.skip_doctest
     def magic_sc(self, parameter_s=''):
         """Shell capture - execute a shell command and capture its output.
 
@@ -2866,31 +2891,33 @@ Defaulting color scheme to 'NoColor'"""
 
         For example:
 
+        # all-random
+        
             # Capture into variable a
-            In [9]: sc a=ls *py
+            In [1]: sc a=ls *py
 
             # a is a string with embedded newlines
-            In [10]: a
-            Out[10]: 'setup.py\nwin32_manual_post_install.py'
+            In [2]: a
+            Out[2]: 'setup.py\\nwin32_manual_post_install.py'
 
             # which can be seen as a list:
-            In [11]: a.l
-            Out[11]: ['setup.py', 'win32_manual_post_install.py']
+            In [3]: a.l
+            Out[3]: ['setup.py', 'win32_manual_post_install.py']
 
             # or as a whitespace-separated string:
-            In [12]: a.s
-            Out[12]: 'setup.py win32_manual_post_install.py'
+            In [4]: a.s
+            Out[4]: 'setup.py win32_manual_post_install.py'
 
             # a.s is useful to pass as a single command line:
-            In [13]: !wc -l $a.s
+            In [5]: !wc -l $a.s
               146 setup.py
               130 win32_manual_post_install.py
               276 total
 
             # while the list form is useful to loop over:
-            In [14]: for f in a.l:
-               ....:      !wc -l $f
-               ....:
+            In [6]: for f in a.l:
+              ...:      !wc -l $f
+              ...:
             146 setup.py
             130 win32_manual_post_install.py
 
@@ -2898,13 +2925,13 @@ Defaulting color scheme to 'NoColor'"""
         the sense that you can equally invoke the .s attribute on them to
         automatically get a whitespace-separated string from their contents:
 
-            In [1]: sc -l b=ls *py
+            In [7]: sc -l b=ls *py
 
-            In [2]: b
-            Out[2]: ['setup.py', 'win32_manual_post_install.py']
+            In [8]: b
+            Out[8]: ['setup.py', 'win32_manual_post_install.py']
 
-            In [3]: b.s
-            Out[3]: 'setup.py win32_manual_post_install.py'
+            In [9]: b.s
+            Out[9]: 'setup.py win32_manual_post_install.py'
 
         In summary, both the lists and strings used for ouptut capture have
         the following special attributes:
@@ -3273,6 +3300,7 @@ Defaulting color scheme to 'NoColor'"""
         save_dstore('rc_separate_out',rc.separate_out)
         save_dstore('rc_separate_out2',rc.separate_out2)
         save_dstore('rc_prompts_pad_left',rc.prompts_pad_left)
+        save_dstore('rc_separate_in',rc.separate_in)
 
         if mode == False:
             # turn on
@@ -3282,6 +3310,8 @@ Defaulting color scheme to 'NoColor'"""
             oc.prompt2.p_template = '... '
             oc.prompt_out.p_template = ''
 
+            # Prompt separators like plain python
+            oc.input_sep = oc.prompt1.sep = ''
             oc.output_sep = ''
             oc.output_sep2 = ''
 
@@ -3300,6 +3330,8 @@ Defaulting color scheme to 'NoColor'"""
             oc.prompt2.p_template = rc.prompt_in2
             oc.prompt_out.p_template = rc.prompt_out
 
+            oc.input_sep = oc.prompt1.sep = dstore.rc_separate_in
+
             oc.output_sep = dstore.rc_separate_out
             oc.output_sep2 = dstore.rc_separate_out2
 
diff --git a/IPython/OInspect.py b/IPython/OInspect.py
index 39a3720..83cf3a0 100644
--- a/IPython/OInspect.py
+++ b/IPython/OInspect.py
@@ -24,16 +24,17 @@ __all__ = ['Inspector','InspectColors']
 
 # stdlib modules
 import __builtin__
+import StringIO
 import inspect
 import linecache
-import string
-import StringIO
-import types
 import os
+import string
 import sys
+import types
+
 # IPython's own
 from IPython import PyColorize
-from IPython.genutils import page,indent,Term,mkdict
+from IPython.genutils import page,indent,Term
 from IPython.Itpl import itpl
 from IPython.wildcard import list_namespace
 from IPython.ColorANSI import *
@@ -136,6 +137,7 @@ def getdoc(obj):
             ds = '%s\n%s' % (ds,ds2)
     return ds
 
+
 def getsource(obj,is_binary=False):
     """Wrapper around inspect.getsource.
 
@@ -162,6 +164,26 @@ def getsource(obj,is_binary=False):
                 src = inspect.getsource(obj.__class__)
         return src
 
+def getargspec(obj):
+    """Get the names and default values of a function's arguments.
+
+    A tuple of four things is returned: (args, varargs, varkw, defaults).
+    'args' is a list of the argument names (it may contain nested lists).
+    'varargs' and 'varkw' are the names of the * and ** arguments or None.
+    'defaults' is an n-tuple of the default values of the last n arguments.
+
+    Modified version of inspect.getargspec from the Python Standard
+    Library."""
+
+    if inspect.isfunction(obj):
+        func_obj = obj
+    elif inspect.ismethod(obj):
+        func_obj = obj.im_func
+    else:
+        raise TypeError, 'arg is not a Python function'
+    args, varargs, varkw = inspect.getargs(func_obj.func_code)
+    return args, varargs, varkw, func_obj.func_defaults
+
 #****************************************************************************
 # Class definitions
 
@@ -172,6 +194,7 @@ class myStringIO(StringIO.StringIO):
         self.write(*arg,**kw)
         self.write('\n')
 
+
 class Inspector:
     def __init__(self,color_table,code_color_table,scheme,
                  str_detail_level=0):
@@ -181,26 +204,6 @@ class Inspector:
         self.str_detail_level = str_detail_level
         self.set_active_scheme(scheme)
 
-    def __getargspec(self,obj):
-        """Get the names and default values of a function's arguments.
-
-        A tuple of four things is returned: (args, varargs, varkw, defaults).
-        'args' is a list of the argument names (it may contain nested lists).
-        'varargs' and 'varkw' are the names of the * and ** arguments or None.
-        'defaults' is an n-tuple of the default values of the last n arguments.
-
-        Modified version of inspect.getargspec from the Python Standard
-        Library."""
-
-        if inspect.isfunction(obj):
-            func_obj = obj
-        elif inspect.ismethod(obj):
-            func_obj = obj.im_func
-        else:
-            raise TypeError, 'arg is not a Python function'
-        args, varargs, varkw = inspect.getargs(func_obj.func_code)
-        return args, varargs, varkw, func_obj.func_defaults
-
     def __getdef(self,obj,oname=''):
         """Return the definition header for any callable object.
 
@@ -208,7 +211,7 @@ class Inspector:
         exception is suppressed."""
         
         try:
-            return oname + inspect.formatargspec(*self.__getargspec(obj))
+            return oname + inspect.formatargspec(*getargspec(obj))
         except:
             return None
  
diff --git a/IPython/Shell.py b/IPython/Shell.py
index 03b5243..a8fe13a 100644
--- a/IPython/Shell.py
+++ b/IPython/Shell.py
@@ -46,13 +46,6 @@ from IPython.ipmaker import make_IPython
 from IPython.Magic import Magic
 from IPython.ipstruct import Struct
 
-try: # Python 2.3 compatibility
-    set
-except NameError:
-    import sets
-    set = sets.Set
-
-
 # Globals
 # global flag to pass around information about Ctrl-C without exceptions
 KBINT = False
@@ -66,6 +59,9 @@ MAIN_THREAD_ID = thread.get_ident()
 # Tag when runcode() is active, for exception handling
 CODE_RUN = None
 
+# Default timeout for waiting for multithreaded shells (in seconds)
+GUI_TIMEOUT = 10
+
 #-----------------------------------------------------------------------------
 # This class is trivial now, but I want to have it in to publish a clean
 # interface. Later when the internals are reorganized, code that uses this
@@ -359,12 +355,15 @@ class MTInteractiveShell(InteractiveShell):
     isthreaded = True
 
     def __init__(self,name,usage=None,rc=Struct(opts=None,args=None),
-                 user_ns=None,user_global_ns=None,banner2='',**kw):
+                 user_ns=None,user_global_ns=None,banner2='',
+                 gui_timeout=GUI_TIMEOUT,**kw):
         """Similar to the normal InteractiveShell, but with threading control"""
         
         InteractiveShell.__init__(self,name,usage,rc,user_ns,
                                   user_global_ns,banner2)
 
+        # Timeout we wait for GUI thread
+        self.gui_timeout = gui_timeout
 
         # A queue to hold the code to be executed. 
         self.code_queue = Queue.Queue()
@@ -408,11 +407,12 @@ class MTInteractiveShell(InteractiveShell):
             # Case 2
             return True
 
-        # shortcut - if we are in worker thread, or the worker thread is not running, 
-        # execute directly (to allow recursion and prevent deadlock if code is run early 
-        # in IPython construction)
+        # shortcut - if we are in worker thread, or the worker thread is not
+        # running, execute directly (to allow recursion and prevent deadlock if
+        # code is run early in IPython construction)
         
-        if (self.worker_ident is None or self.worker_ident == thread.get_ident()):
+        if (self.worker_ident is None
+            or self.worker_ident == thread.get_ident() ):
             InteractiveShell.runcode(self,code)
             return
 
@@ -423,7 +423,7 @@ class MTInteractiveShell(InteractiveShell):
         
         self.code_queue.put((code,completed_ev, received_ev))
         # first make sure the message was received, with timeout
-        received_ev.wait(5)
+        received_ev.wait(self.gui_timeout)
         if not received_ev.isSet():
             # the mainloop is dead, start executing code directly
             print "Warning: Timeout for mainloop thread exceeded"
diff --git a/IPython/__init__.py b/IPython/__init__.py
index 53d43d4..48c95af 100644
--- a/IPython/__init__.py
+++ b/IPython/__init__.py
@@ -39,8 +39,8 @@ $Id: __init__.py 2399 2007-05-26 10:23:10Z vivainio $"""
 # Enforce proper version requirements
 import sys
 
-if sys.version[0:3] < '2.3':
-    raise ImportError('Python Version 2.3 or above is required for IPython.')
+if sys.version[0:3] < '2.4':
+    raise ImportError('Python Version 2.4 or above is required for IPython.')
 
 # Make it easy to import extensions - they are always directly on pythonpath.
 # Therefore, non-IPython modules can be added to Extensions directory
@@ -54,6 +54,7 @@ __all__ = ['ipapi','generics','ipstruct','Release','Shell']
 # access to them via IPython.<name>
 glob,loc = globals(),locals()
 for name in __all__:
+    #print 'Importing: ',name # dbg
     __import__(name,glob,loc,[])
 
 import Shell
diff --git a/IPython/completer.py b/IPython/completer.py
index 0962604..3647da2 100644
--- a/IPython/completer.py
+++ b/IPython/completer.py
@@ -108,13 +108,6 @@ class Completer:
         readline.set_completer(Completer(my_namespace).complete)
         """
 
-        # some minimal strict typechecks.  For some core data structures, I
-        # want actual basic python types, not just anything that looks like
-        # one.  This is especially true for namespaces.
-        for ns in (namespace,global_namespace):
-            if ns is not None and type(ns) != types.DictType:
-                raise TypeError,'namespace must be a dictionary'
-
         # 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.
diff --git a/IPython/deep_reload.py b/IPython/deep_reload.py
index a0a6236..f578de2 100644
--- a/IPython/deep_reload.py
+++ b/IPython/deep_reload.py
@@ -4,6 +4,7 @@ A module to change reload() so that it acts recursively.
 To enable it type:
     >>> import __builtin__, deep_reload
     >>> __builtin__.reload = deep_reload.reload
+
 You can then disable it with:
     >>> __builtin__.reload = deep_reload.original_reload
     
diff --git a/IPython/frontend/cocoa/cocoa_frontend.py b/IPython/frontend/cocoa/cocoa_frontend.py
index df6cc3f..801e85d 100644
--- a/IPython/frontend/cocoa/cocoa_frontend.py
+++ b/IPython/frontend/cocoa/cocoa_frontend.py
@@ -45,9 +45,9 @@ from IPython.frontend.frontendbase import AsyncFrontEndBase
 from twisted.internet.threads import blockingCallFromThread
 from twisted.python.failure import Failure
 
-#------------------------------------------------------------------------------
+#-----------------------------------------------------------------------------
 # Classes to implement the Cocoa frontend
-#------------------------------------------------------------------------------
+#-----------------------------------------------------------------------------
 
 # TODO: 
 #   1. use MultiEngineClient and out-of-process engine rather than 
@@ -61,41 +61,94 @@ class AutoreleasePoolWrappedThreadedEngineService(ThreadedEngineService):
         """wrapped_execute"""
         try:
             p = NSAutoreleasePool.alloc().init()
-            result = self.shell.execute(lines)
-        except Exception,e:
-            # This gives the following:
-            # et=exception class
-            # ev=exception class instance
-            # tb=traceback object
-            et,ev,tb = sys.exc_info()
-            # This call adds attributes to the exception value
-            et,ev,tb = self.shell.formatTraceback(et,ev,tb,msg)
-            # Add another attribute
-            
-            # Create a new exception with the new attributes
-            e = et(ev._ipython_traceback_text)
-            e._ipython_engine_info = msg
-            
-            # Re-raise
-            raise e
+            result = super(AutoreleasePoolWrappedThreadedEngineService,
+                            self).wrapped_execute(msg, lines)
         finally:
             p.drain()
         
         return result
     
-    def execute(self, lines):
-        # Only import this if we are going to use this class
-        from twisted.internet import threads
+
+
+class Cell(NSObject):
+    """
+    Representation of the prompts, input and output of a cell in the
+    frontend
+    """
+    
+    blockNumber = objc.ivar().unsigned_long()
+    blockID = objc.ivar()
+    inputBlock = objc.ivar()
+    output = objc.ivar()
+     
+
+   
+class CellBlock(object):
+    """
+    Storage for information about text ranges relating to a single cell
+    """
+
         
-        msg = {'engineid':self.id,
-               'method':'execute',
-               'args':[lines]}
+    def __init__(self, inputPromptRange, inputRange=None, outputPromptRange=None,
+                outputRange=None):
+        super(CellBlock, self).__init__()
+        self.inputPromptRange = inputPromptRange
+        self.inputRange = inputRange
+        self.outputPromptRange = outputPromptRange
+        self.outputRange = outputRange
+    
+    def update_ranges_for_insertion(self, text, textRange):
+        """Update ranges for text insertion at textRange"""
+        
+        for r in [self.inputPromptRange,self.inputRange,
+                    self.outputPromptRange, self.outputRange]:
+            if(r == None):
+                continue
+            intersection = NSIntersectionRange(r,textRange)
+            if(intersection.length == 0): #ranges don't intersect
+                if r.location >= textRange.location:
+                    r.location += len(text)
+            else: #ranges intersect
+                if(r.location > textRange.location):
+                    offset = len(text) - intersection.length
+                    r.length -= offset
+                    r.location += offset
+                elif(r.location == textRange.location):
+                    r.length += len(text) - intersection.length
+                else:
+                    r.length -= intersection.length
+    
+    
+    def update_ranges_for_deletion(self, textRange):
+        """Update ranges for text deletion at textRange"""
         
-        d = threads.deferToThread(self.wrapped_execute, msg, lines)
-        d.addCallback(self.addIDToResult)
-        return d
+        for r in [self.inputPromptRange,self.inputRange,
+                    self.outputPromptRange, self.outputRange]:
+            if(r==None):
+                continue
+            intersection = NSIntersectionRange(r, textRange)
+            if(intersection.length == 0): #ranges don't intersect
+                if r.location >= textRange.location:
+                    r.location -= textRange.length
+            else: #ranges intersect
+                if(r.location > textRange.location):
+                    offset = intersection.length
+                    r.length -= offset
+                    r.location += offset
+                elif(r.location == textRange.location):
+                    r.length += intersection.length
+                else:
+                    r.length -= intersection.length
+    
+    def __repr__(self):
+        return 'CellBlock('+ str((self.inputPromptRange,
+                                self.inputRange,
+                                self.outputPromptRange,
+                                self.outputRange)) + ')'
+    
 
 
+        
 class IPythonCocoaController(NSObject, AsyncFrontEndBase):
     userNS = objc.ivar() #mirror of engine.user_ns (key=>str(value))
     waitingForEngine = objc.ivar().bool()
@@ -120,7 +173,7 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         self.tabSpaces = 4
         self.tabUsesSpaces = True
         self.currentBlockID = self.next_block_ID()
-        self.blockRanges = {} # blockID=>NSRange
+        self.blockRanges = {} # blockID=>CellBlock
     
     
     def awakeFromNib(self):
@@ -148,6 +201,7 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         self.verticalRulerView = r
         self.verticalRulerView.setClientView_(self.textView)
         self._start_cli_banner()
+        self.start_new_block()
     
     
     def appWillTerminate_(self, notification):
@@ -239,14 +293,16 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
     
     
     def update_cell_prompt(self, result, blockID=None):
+        print self.blockRanges
         if(isinstance(result, Failure)):
-            self.insert_text(self.input_prompt(),
-                textRange=NSMakeRange(self.blockRanges[blockID].location,0),
-                scrollToVisible=False
-                )
+            prompt = self.input_prompt()
+            
         else:
-            self.insert_text(self.input_prompt(number=result['number']),
-                textRange=NSMakeRange(self.blockRanges[blockID].location,0),
+            prompt = self.input_prompt(number=result['number'])
+        
+        r = self.blockRanges[blockID].inputPromptRange
+        self.insert_text(prompt,
+                textRange=r,
                 scrollToVisible=False
                 )
         
@@ -255,7 +311,7 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
     
     def render_result(self, result):
         blockID = result['blockID']
-        inputRange = self.blockRanges[blockID]
+        inputRange = self.blockRanges[blockID].inputRange
         del self.blockRanges[blockID]
         
         #print inputRange,self.current_block_range()
@@ -269,11 +325,17 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
     
         
     def render_error(self, failure):
+        print failure
+        blockID = failure.blockID
+        inputRange = self.blockRanges[blockID].inputRange
         self.insert_text('\n' +
                         self.output_prompt() +
                         '\n' +
                         failure.getErrorMessage() +
-                        '\n\n')
+                        '\n\n',
+                        textRange=NSMakeRange(inputRange.location +
+                                                inputRange.length,
+                                                0))
         self.start_new_block()
         return failure
     
@@ -291,6 +353,9 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         """"""
         
         self.currentBlockID = self.next_block_ID()
+        self.blockRanges[self.currentBlockID] = self.new_cell_block()
+        self.insert_text(self.input_prompt(), 
+            textRange=self.current_block_range().inputPromptRange)
     
     
     
@@ -298,15 +363,23 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         
         return uuid.uuid4()
     
+    def new_cell_block(self):
+        """A new CellBlock at the end of self.textView.textStorage()"""
+        
+        return CellBlock(NSMakeRange(self.textView.textStorage().length(), 
+                                    0), #len(self.input_prompt())),
+                        NSMakeRange(self.textView.textStorage().length(),# + len(self.input_prompt()),
+                                    0))
+    
+    
     def current_block_range(self):
         return self.blockRanges.get(self.currentBlockID, 
-                        NSMakeRange(self.textView.textStorage().length(), 
-                        0))
+                        self.new_cell_block())
     
     def current_block(self):
         """The current block's text"""
         
-        return self.text_for_range(self.current_block_range())
+        return self.text_for_range(self.current_block_range().inputRange)
     
     def text_for_range(self, textRange):
         """text_for_range"""
@@ -315,7 +388,7 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         return ts.string().substringWithRange_(textRange)
     
     def current_line(self):
-        block = self.text_for_range(self.current_block_range())
+        block = self.text_for_range(self.current_block_range().inputRange)
         block = block.split('\n')
         return block[-1]
     
@@ -324,38 +397,28 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         """Insert text into textView at textRange, updating blockRanges 
         as necessary
         """
-        
         if(textRange == None):
             #range for end of text
             textRange = NSMakeRange(self.textView.textStorage().length(), 0) 
         
-        for r in self.blockRanges.itervalues():
-            intersection = NSIntersectionRange(r,textRange)
-            if(intersection.length == 0): #ranges don't intersect
-                if r.location >= textRange.location:
-                    r.location += len(string)
-            else: #ranges intersect
-                if(r.location <= textRange.location):
-                    assert(intersection.length == textRange.length)
-                    r.length += textRange.length
-                else:
-                    r.location += intersection.length
         
         self.textView.replaceCharactersInRange_withString_(
             textRange, string)
-        self.textView.setSelectedRange_(
-            NSMakeRange(textRange.location+len(string), 0))
+            
+        for r in self.blockRanges.itervalues():
+            r.update_ranges_for_insertion(string, textRange)
+        
+        self.textView.setSelectedRange_(textRange)
         if(scrollToVisible):
             self.textView.scrollRangeToVisible_(textRange)
-        
     
     
     
     def replace_current_block_with_string(self, textView, string):
         textView.replaceCharactersInRange_withString_(
-                                                self.current_block_range(),
-                                                string)
-        self.current_block_range().length = len(string)
+                                    self.current_block_range().inputRange,
+                                    string)
+        self.current_block_range().inputRange.length = len(string)
         r = NSMakeRange(textView.textStorage().length(), 0)
         textView.scrollRangeToVisible_(r)
         textView.setSelectedRange_(r)
@@ -424,26 +487,18 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         
         elif(selector == 'moveToBeginningOfParagraph:'):
             textView.setSelectedRange_(NSMakeRange(
-                                        self.current_block_range().location, 
-                                        0))
+                            self.current_block_range().inputRange.location, 
+                            0))
             return True
         elif(selector == 'moveToEndOfParagraph:'):
             textView.setSelectedRange_(NSMakeRange(
-                                    self.current_block_range().location + \
-                                    self.current_block_range().length, 0))
+                            self.current_block_range().inputRange.location + \
+                            self.current_block_range().inputRange.length, 0))
             return True
         elif(selector == 'deleteToEndOfParagraph:'):
             if(textView.selectedRange().location <= \
                 self.current_block_range().location):
-                # Intersect the selected range with the current line range
-                if(self.current_block_range().length < 0):
-                    self.blockRanges[self.currentBlockID].length = 0
-            
-                r = NSIntersectionRange(textView.rangesForUserTextChange()[0],
-                                        self.current_block_range())
-                
-                if(r.length > 0): #no intersection
-                    textView.setSelectedRange_(r)
+                raise NotImplemented()
             
             return False # don't actually handle the delete
         
@@ -457,10 +512,15 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         elif(selector == 'deleteBackward:'):
             #if we're at the beginning of the current block, ignore
             if(textView.selectedRange().location == \
-                self.current_block_range().location):
+                self.current_block_range().inputRange.location):
                 return True
             else:
-                self.current_block_range().length-=1
+                for r in self.blockRanges.itervalues():
+                    deleteRange = textView.selectedRange
+                    if(deleteRange.length == 0):
+                        deleteRange.location -= 1
+                        deleteRange.length = 1
+                    r.update_ranges_for_deletion(deleteRange)
                 return False
         return False
     
@@ -479,14 +539,9 @@ class IPythonCocoaController(NSObject, AsyncFrontEndBase):
         for r,s in zip(ranges, replacementStrings):
             r = r.rangeValue()
             if(textView.textStorage().length() > 0 and
-                    r.location < self.current_block_range().location):
+                r.location < self.current_block_range().inputRange.location):
                 self.insert_text(s)
                 allow = False
-            
-            
-            self.blockRanges.setdefault(self.currentBlockID, 
-                                        self.current_block_range()).length +=\
-                                         len(s)
         
         return allow
     
diff --git a/IPython/frontend/cocoa/examples/IPython1Sandbox/English.lproj/MainMenu.xib b/IPython/frontend/cocoa/examples/IPython1Sandbox/English.lproj/MainMenu.xib
index 45bf95a..176e41f 100644
--- a/IPython/frontend/cocoa/examples/IPython1Sandbox/English.lproj/MainMenu.xib
+++ b/IPython/frontend/cocoa/examples/IPython1Sandbox/English.lproj/MainMenu.xib
@@ -37,12 +37,12 @@
 						<string key="NSKeyEquiv" id="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<object class="NSCustomResource" key="NSOnImage" id="985281305">
-							<string key="NSClassName" id="60114142">NSImage</string>
+						<object class="NSCustomResource" key="NSOnImage" id="271266416">
+							<string key="NSClassName" id="375865337">NSImage</string>
 							<string key="NSResourceName">NSMenuCheckmark</string>
 						</object>
-						<object class="NSCustomResource" key="NSMixedImage" id="351279908">
-							<reference key="NSClassName" ref="60114142"/>
+						<object class="NSCustomResource" key="NSMixedImage" id="508123839">
+							<reference key="NSClassName" ref="375865337"/>
 							<string key="NSResourceName">NSMenuMixedState</string>
 						</object>
 						<string key="NSAction">submenuAction:</string>
@@ -55,8 +55,8 @@
 									<string key="NSTitle">About IPython1Sandbox</string>
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="304266470">
 									<reference key="NSMenu" ref="110575045"/>
@@ -66,8 +66,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="609285721">
 									<reference key="NSMenu" ref="110575045"/>
@@ -75,8 +75,8 @@
 									<string key="NSKeyEquiv">,</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="481834944">
 									<reference key="NSMenu" ref="110575045"/>
@@ -86,8 +86,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1046388886">
 									<reference key="NSMenu" ref="110575045"/>
@@ -95,8 +95,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<string key="NSAction">submenuAction:</string>
 									<object class="NSMenu" key="NSSubmenu" id="752062318">
 										<reference key="NSTitle" ref="642338826"/>
@@ -114,8 +114,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="755159360">
 									<reference key="NSMenu" ref="110575045"/>
@@ -123,8 +123,8 @@
 									<string key="NSKeyEquiv" id="940330891">h</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="342932134">
 									<reference key="NSMenu" ref="110575045"/>
@@ -132,8 +132,8 @@
 									<reference key="NSKeyEquiv" ref="940330891"/>
 									<int key="NSKeyEquivModMask">1572864</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="908899353">
 									<reference key="NSMenu" ref="110575045"/>
@@ -141,8 +141,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1056857174">
 									<reference key="NSMenu" ref="110575045"/>
@@ -152,8 +152,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="632727374">
 									<reference key="NSMenu" ref="110575045"/>
@@ -161,8 +161,8 @@
 									<string key="NSKeyEquiv">q</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 							</object>
 							<string key="NSName">_NSAppleMenu</string>
@@ -174,8 +174,8 @@
 						<reference key="NSKeyEquiv" ref="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<reference key="NSOnImage" ref="985281305"/>
-						<reference key="NSMixedImage" ref="351279908"/>
+						<reference key="NSOnImage" ref="271266416"/>
+						<reference key="NSMixedImage" ref="508123839"/>
 						<string key="NSAction">submenuAction:</string>
 						<object class="NSMenu" key="NSSubmenu" id="720053764">
 							<reference key="NSTitle" ref="881404960"/>
@@ -187,8 +187,8 @@
 									<string key="NSKeyEquiv">n</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="722745758">
 									<reference key="NSMenu" ref="720053764"/>
@@ -196,8 +196,8 @@
 									<string key="NSKeyEquiv">o</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1025936716">
 									<reference key="NSMenu" ref="720053764"/>
@@ -205,8 +205,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<string key="NSAction">submenuAction:</string>
 									<object class="NSMenu" key="NSSubmenu" id="1065607017">
 										<reference key="NSTitle" ref="975517829"/>
@@ -218,8 +218,8 @@
 												<reference key="NSKeyEquiv" ref="255189770"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 										</object>
 										<string key="NSName">_NSRecentDocumentsMenu</string>
@@ -233,8 +233,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="776162233">
 									<reference key="NSMenu" ref="720053764"/>
@@ -242,8 +242,8 @@
 									<string key="NSKeyEquiv">w</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1023925487">
 									<reference key="NSMenu" ref="720053764"/>
@@ -251,8 +251,8 @@
 									<string key="NSKeyEquiv">s</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="117038363">
 									<reference key="NSMenu" ref="720053764"/>
@@ -260,16 +260,16 @@
 									<string key="NSKeyEquiv">S</string>
 									<int key="NSKeyEquivModMask">1179648</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="579971712">
 									<reference key="NSMenu" ref="720053764"/>
 									<string key="NSTitle">Revert to Saved</string>
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1010469920">
 									<reference key="NSMenu" ref="720053764"/>
@@ -279,8 +279,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="294629803">
 									<reference key="NSMenu" ref="720053764"/>
@@ -288,8 +288,8 @@
 									<string key="NSKeyEquiv">P</string>
 									<int key="NSKeyEquivModMask">1179648</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<reference key="NSToolTip" ref="255189770"/>
 								</object>
 								<object class="NSMenuItem" id="49223823">
@@ -298,8 +298,8 @@
 									<string key="NSKeyEquiv">p</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 							</object>
 						</object>
@@ -310,8 +310,8 @@
 						<reference key="NSKeyEquiv" ref="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<reference key="NSOnImage" ref="985281305"/>
-						<reference key="NSMixedImage" ref="351279908"/>
+						<reference key="NSOnImage" ref="271266416"/>
+						<reference key="NSMixedImage" ref="508123839"/>
 						<string key="NSAction">submenuAction:</string>
 						<object class="NSMenu" key="NSSubmenu" id="789758025">
 							<reference key="NSTitle" ref="1037326483"/>
@@ -323,8 +323,8 @@
 									<string key="NSKeyEquiv">z</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="790794224">
 									<reference key="NSMenu" ref="789758025"/>
@@ -332,8 +332,8 @@
 									<string key="NSKeyEquiv">Z</string>
 									<int key="NSKeyEquivModMask">1179648</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1040322652">
 									<reference key="NSMenu" ref="789758025"/>
@@ -343,8 +343,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="296257095">
 									<reference key="NSMenu" ref="789758025"/>
@@ -352,8 +352,8 @@
 									<string key="NSKeyEquiv">x</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="860595796">
 									<reference key="NSMenu" ref="789758025"/>
@@ -361,8 +361,8 @@
 									<string key="NSKeyEquiv">c</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="29853731">
 									<reference key="NSMenu" ref="789758025"/>
@@ -370,8 +370,8 @@
 									<string key="NSKeyEquiv">v</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="437104165">
 									<reference key="NSMenu" ref="789758025"/>
@@ -379,8 +379,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="583158037">
 									<reference key="NSMenu" ref="789758025"/>
@@ -388,8 +388,8 @@
 									<string key="NSKeyEquiv">a</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="212016141">
 									<reference key="NSMenu" ref="789758025"/>
@@ -399,8 +399,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="892235320">
 									<reference key="NSMenu" ref="789758025"/>
@@ -408,8 +408,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<string key="NSAction">submenuAction:</string>
 									<object class="NSMenu" key="NSSubmenu" id="963351320">
 										<reference key="NSTitle" ref="688083180"/>
@@ -421,8 +421,8 @@
 												<string key="NSKeyEquiv" id="469505129">f</string>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">1</int>
 											</object>
 											<object class="NSMenuItem" id="326711663">
@@ -431,8 +431,8 @@
 												<string key="NSKeyEquiv" id="762398675">g</string>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">2</int>
 											</object>
 											<object class="NSMenuItem" id="270902937">
@@ -441,8 +441,8 @@
 												<string key="NSKeyEquiv" id="819654342">G</string>
 												<int key="NSKeyEquivModMask">1179648</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">3</int>
 											</object>
 											<object class="NSMenuItem" id="159080638">
@@ -451,8 +451,8 @@
 												<string key="NSKeyEquiv">e</string>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">7</int>
 											</object>
 											<object class="NSMenuItem" id="88285865">
@@ -461,8 +461,8 @@
 												<string key="NSKeyEquiv">j</string>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 										</object>
 									</object>
@@ -473,8 +473,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<string key="NSAction">submenuAction:</string>
 									<object class="NSMenu" key="NSSubmenu" id="769623530">
 										<reference key="NSTitle" ref="739167250"/>
@@ -486,8 +486,8 @@
 												<string key="NSKeyEquiv">:</string>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 											<object class="NSMenuItem" id="96193923">
 												<reference key="NSMenu" ref="769623530"/>
@@ -495,8 +495,8 @@
 												<string key="NSKeyEquiv">;</string>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 											<object class="NSMenuItem" id="948374510">
 												<reference key="NSMenu" ref="769623530"/>
@@ -504,8 +504,8 @@
 												<reference key="NSKeyEquiv" ref="255189770"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 											<object class="NSMenuItem" id="967646866">
 												<reference key="NSMenu" ref="769623530"/>
@@ -513,8 +513,8 @@
 												<reference key="NSKeyEquiv" ref="255189770"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 										</object>
 									</object>
@@ -525,8 +525,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<string key="NSAction">submenuAction:</string>
 									<object class="NSMenu" key="NSSubmenu" id="698887838">
 										<reference key="NSTitle" ref="904739598"/>
@@ -538,8 +538,8 @@
 												<reference key="NSKeyEquiv" ref="469505129"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">1</int>
 											</object>
 											<object class="NSMenuItem" id="197661976">
@@ -548,8 +548,8 @@
 												<reference key="NSKeyEquiv" ref="762398675"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">2</int>
 											</object>
 											<object class="NSMenuItem" id="708854459">
@@ -558,8 +558,8 @@
 												<reference key="NSKeyEquiv" ref="819654342"/>
 												<int key="NSKeyEquivModMask">1179648</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 												<int key="NSTag">3</int>
 											</object>
 										</object>
@@ -571,8 +571,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 									<string key="NSAction">submenuAction:</string>
 									<object class="NSMenu" key="NSSubmenu" id="785027613">
 										<reference key="NSTitle" ref="812002426"/>
@@ -584,8 +584,8 @@
 												<reference key="NSKeyEquiv" ref="255189770"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 											<object class="NSMenuItem" id="680220178">
 												<reference key="NSMenu" ref="785027613"/>
@@ -593,8 +593,8 @@
 												<reference key="NSKeyEquiv" ref="255189770"/>
 												<int key="NSKeyEquivModMask">1048576</int>
 												<int key="NSMnemonicLoc">2147483647</int>
-												<reference key="NSOnImage" ref="985281305"/>
-												<reference key="NSMixedImage" ref="351279908"/>
+												<reference key="NSOnImage" ref="271266416"/>
+												<reference key="NSMixedImage" ref="508123839"/>
 											</object>
 										</object>
 									</object>
@@ -608,8 +608,8 @@
 						<reference key="NSKeyEquiv" ref="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<reference key="NSOnImage" ref="985281305"/>
-						<reference key="NSMixedImage" ref="351279908"/>
+						<reference key="NSOnImage" ref="271266416"/>
+						<reference key="NSMixedImage" ref="508123839"/>
 						<string key="NSAction">submenuAction:</string>
 						<object class="NSMenu" key="NSSubmenu" id="502084290">
 							<reference key="NSTitle" ref="241242548"/>
@@ -621,8 +621,8 @@
 									<string key="NSKeyEquiv" id="806579634">t</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="1028416764">
 									<reference key="NSMenu" ref="502084290"/>
@@ -630,8 +630,8 @@
 									<string key="NSKeyEquiv">C</string>
 									<int key="NSKeyEquivModMask">1179648</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 							</object>
 						</object>
@@ -642,8 +642,8 @@
 						<reference key="NSKeyEquiv" ref="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<reference key="NSOnImage" ref="985281305"/>
-						<reference key="NSMixedImage" ref="351279908"/>
+						<reference key="NSOnImage" ref="271266416"/>
+						<reference key="NSMixedImage" ref="508123839"/>
 						<string key="NSAction">submenuAction:</string>
 						<object class="NSMenu" key="NSSubmenu" id="466310130">
 							<reference key="NSTitle" ref="809723865"/>
@@ -655,8 +655,8 @@
 									<reference key="NSKeyEquiv" ref="806579634"/>
 									<int key="NSKeyEquivModMask">1572864</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="237841660">
 									<reference key="NSMenu" ref="466310130"/>
@@ -664,8 +664,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 							</object>
 						</object>
@@ -676,8 +676,8 @@
 						<reference key="NSKeyEquiv" ref="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<reference key="NSOnImage" ref="985281305"/>
-						<reference key="NSMixedImage" ref="351279908"/>
+						<reference key="NSOnImage" ref="271266416"/>
+						<reference key="NSMixedImage" ref="508123839"/>
 						<string key="NSAction">submenuAction:</string>
 						<object class="NSMenu" key="NSSubmenu" id="835318025">
 							<reference key="NSTitle" ref="64165424"/>
@@ -689,8 +689,8 @@
 									<string key="NSKeyEquiv">m</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="575023229">
 									<reference key="NSMenu" ref="835318025"/>
@@ -698,8 +698,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="299356726">
 									<reference key="NSMenu" ref="835318025"/>
@@ -709,8 +709,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 								<object class="NSMenuItem" id="625202149">
 									<reference key="NSMenu" ref="835318025"/>
@@ -718,8 +718,8 @@
 									<reference key="NSKeyEquiv" ref="255189770"/>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 							</object>
 							<string key="NSName">_NSWindowsMenu</string>
@@ -731,8 +731,8 @@
 						<reference key="NSKeyEquiv" ref="255189770"/>
 						<int key="NSKeyEquivModMask">1048576</int>
 						<int key="NSMnemonicLoc">2147483647</int>
-						<reference key="NSOnImage" ref="985281305"/>
-						<reference key="NSMixedImage" ref="351279908"/>
+						<reference key="NSOnImage" ref="271266416"/>
+						<reference key="NSMixedImage" ref="508123839"/>
 						<string key="NSAction">submenuAction:</string>
 						<object class="NSMenu" key="NSSubmenu" id="374024848">
 							<reference key="NSTitle" ref="461919786"/>
@@ -744,8 +744,8 @@
 									<string key="NSKeyEquiv">?</string>
 									<int key="NSKeyEquivModMask">1048576</int>
 									<int key="NSMnemonicLoc">2147483647</int>
-									<reference key="NSOnImage" ref="985281305"/>
-									<reference key="NSMixedImage" ref="351279908"/>
+									<reference key="NSOnImage" ref="271266416"/>
+									<reference key="NSMixedImage" ref="508123839"/>
 								</object>
 							</object>
 						</object>
@@ -860,7 +860,7 @@
 																				<bool key="EncodedWithXMLCoder">YES</bool>
 																				<object class="NSColor">
 																					<int key="NSColorSpace">6</int>
-																					<string key="NSCatalogName" id="945274157">System</string>
+																					<string key="NSCatalogName" id="484387293">System</string>
 																					<string key="NSColorName">selectedTextBackgroundColor</string>
 																					<object class="NSColor" key="NSColor" id="377165725">
 																						<int key="NSColorSpace">3</int>
@@ -869,7 +869,7 @@
 																				</object>
 																				<object class="NSColor">
 																					<int key="NSColorSpace">6</int>
-																					<reference key="NSCatalogName" ref="945274157"/>
+																					<reference key="NSCatalogName" ref="484387293"/>
 																					<string key="NSColorName">selectedTextColor</string>
 																					<reference key="NSColor" ref="555789289"/>
 																				</object>
@@ -963,13 +963,13 @@
 										<int key="NSCellFlags2">0</int>
 										<string key="NSContents">Console</string>
 										<object class="NSFont" key="NSSupport" id="26">
-											<string key="NSName" id="257617473">LucidaGrande</string>
+											<string key="NSName" id="378950370">LucidaGrande</string>
 											<double key="NSSize">1.100000e+01</double>
 											<int key="NSfFlags">3100</int>
 										</object>
 										<object class="NSColor" key="NSBackgroundColor" id="131515055">
 											<int key="NSColorSpace">6</int>
-											<reference key="NSCatalogName" ref="945274157"/>
+											<reference key="NSCatalogName" ref="484387293"/>
 											<string key="NSColorName">textBackgroundColor</string>
 											<reference key="NSColor" ref="521347521"/>
 										</object>
@@ -1043,7 +1043,7 @@
 																				</object>
 																				<object class="NSColor" key="NSTextColor" id="866628999">
 																					<int key="NSColorSpace">6</int>
-																					<reference key="NSCatalogName" ref="945274157"/>
+																					<reference key="NSCatalogName" ref="484387293"/>
 																					<string key="NSColorName">headerTextColor</string>
 																					<reference key="NSColor" ref="555789289"/>
 																				</object>
@@ -1051,22 +1051,22 @@
 																			<object class="NSTextFieldCell" key="NSDataCell" id="525071236">
 																				<int key="NSCellFlags">337772096</int>
 																				<int key="NSCellFlags2">2048</int>
-																				<string key="NSContents" id="590184478">Text Cell</string>
+																				<string key="NSContents" id="456204663">Text Cell</string>
 																				<object class="NSFont" key="NSSupport" id="8196371">
-																					<reference key="NSName" ref="257617473"/>
+																					<reference key="NSName" ref="378950370"/>
 																					<double key="NSSize">1.300000e+01</double>
 																					<int key="NSfFlags">1044</int>
 																				</object>
 																				<reference key="NSControlView" ref="23853726"/>
 																				<object class="NSColor" key="NSBackgroundColor" id="224028609">
 																					<int key="NSColorSpace">6</int>
-																					<reference key="NSCatalogName" ref="945274157"/>
+																					<reference key="NSCatalogName" ref="484387293"/>
 																					<string key="NSColorName">controlBackgroundColor</string>
 																					<reference key="NSColor" ref="377165725"/>
 																				</object>
 																				<object class="NSColor" key="NSTextColor" id="205104690">
 																					<int key="NSColorSpace">6</int>
-																					<reference key="NSCatalogName" ref="945274157"/>
+																					<reference key="NSCatalogName" ref="484387293"/>
 																					<string key="NSColorName">controlTextColor</string>
 																					<reference key="NSColor" ref="555789289"/>
 																				</object>
@@ -1091,7 +1091,7 @@
 																			<object class="NSTextFieldCell" key="NSDataCell" id="377147224">
 																				<int key="NSCellFlags">337772096</int>
 																				<int key="NSCellFlags2">2048</int>
-																				<reference key="NSContents" ref="590184478"/>
+																				<reference key="NSContents" ref="456204663"/>
 																				<reference key="NSSupport" ref="8196371"/>
 																				<reference key="NSControlView" ref="23853726"/>
 																				<reference key="NSBackgroundColor" ref="224028609"/>
@@ -1108,7 +1108,7 @@
 																	<reference key="NSBackgroundColor" ref="521347521"/>
 																	<object class="NSColor" key="NSGridColor">
 																		<int key="NSColorSpace">6</int>
-																		<reference key="NSCatalogName" ref="945274157"/>
+																		<reference key="NSCatalogName" ref="484387293"/>
 																		<string key="NSColorName">gridColor</string>
 																		<object class="NSColor" key="NSColor">
 																			<int key="NSColorSpace">3</int>
@@ -2787,9 +2787,9 @@
 					<reference ref="9"/>
 					<reference ref="113577022"/>
 					<integer value="0"/>
-					<string>{{108, 368}, {725, 337}}</string>
+					<string>{{27, 368}, {725, 337}}</string>
 					<reference ref="9"/>
-					<string>{{108, 368}, {725, 337}}</string>
+					<string>{{27, 368}, {725, 337}}</string>
 					<reference ref="113577022"/>
 					<reference ref="113577022"/>
 					<reference ref="113577022"/>
@@ -2878,8 +2878,8 @@
 			<object class="NSMutableArray" key="referencedPartialClassDescriptions">
 				<bool key="EncodedWithXMLCoder">YES</bool>
 				<object class="IBPartialClassDescription">
-					<string key="className">IPython1SandboxAppDelegate</string>
-					<string key="superclassName">NSObject</string>
+					<reference key="className" ref="695797635"/>
+					<nil key="superclassName"/>
 					<object class="NSMutableDictionary" key="actions">
 						<bool key="EncodedWithXMLCoder">YES</bool>
 						<object class="NSArray" key="dict.sortedKeys">
@@ -2890,17 +2890,17 @@
 						</object>
 					</object>
 					<object class="NSMutableDictionary" key="outlets">
-						<string key="NS.key.0">ipythonController</string>
-						<string key="NS.object.0">id</string>
+						<reference key="NS.key.0" ref="684042788"/>
+						<string key="NS.object.0">NSTextView</string>
 					</object>
 					<object class="IBClassDescriptionSource" key="sourceIdentifier">
-						<string key="majorKey">IBProjectSource</string>
-						<string key="minorKey">IPython1SandboxAppDelegate.py</string>
+						<string key="majorKey">IBUserSource</string>
+						<reference key="minorKey" ref="255189770"/>
 					</object>
 				</object>
 				<object class="IBPartialClassDescription">
-					<reference key="className" ref="695797635"/>
-					<nil key="superclassName"/>
+					<string key="className">IPython1SandboxAppDelegate</string>
+					<string key="superclassName">NSObject</string>
 					<object class="NSMutableDictionary" key="actions">
 						<bool key="EncodedWithXMLCoder">YES</bool>
 						<object class="NSArray" key="dict.sortedKeys">
@@ -2911,12 +2911,12 @@
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 					</object>
 					<object class="NSMutableDictionary" key="outlets">
-						<reference key="NS.key.0" ref="684042788"/>
-						<string key="NS.object.0">NSTextView</string>
+						<string key="NS.key.0">ipythonController</string>
+						<string key="NS.object.0">id</string>
 					</object>
 					<object class="IBClassDescriptionSource" key="sourceIdentifier">
-						<string key="majorKey">IBUserSource</string>
-						<reference key="minorKey" ref="255189770"/>
+						<string key="majorKey">IBProjectSource</string>
+						<string key="minorKey">IPython1SandboxAppDelegate.py</string>
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 		</object>
 	</data>
 </archive>
diff --git a/IPython/frontend/frontendbase.py b/IPython/frontend/frontendbase.py
index e9c8fbb..d1e42bb 100644
--- a/IPython/frontend/frontendbase.py
+++ b/IPython/frontend/frontendbase.py
@@ -37,11 +37,6 @@ from IPython.kernel.core.history import FrontEndHistory
 from IPython.kernel.core.util import Bunch
 from IPython.kernel.engineservice import IEngineCore
 
-try:
-    from twisted.python.failure import Failure
-except ImportError:
-    #Twisted not available
-    Failure = Exception
 
 ##############################################################################
 # TEMPORARY!!! fake configuration, while we decide whether to use tconfig or
@@ -286,7 +281,6 @@ class FrontEndBase(object):
     
     def _add_block_id_for_failure(self, failure, blockID):
         """_add_block_id_for_failure"""
-        
         failure.blockID = blockID
         return failure
     
@@ -387,6 +381,7 @@ class AsyncFrontEndBase(FrontEndBase):
         """
         
         if(not self.is_complete(block)):
+            from twisted.python.failure import Failure
             return Failure(Exception("Block is not compilable"))
         
         if(blockID == None):
@@ -394,10 +389,8 @@ class AsyncFrontEndBase(FrontEndBase):
         
         d = self.engine.execute(block)
         d.addCallback(self._add_history, block=block)
-        d.addCallbacks(self._add_block_id_for_result,
-                errback=self._add_block_id_for_failure,
-                callbackArgs=(blockID,),
-                errbackArgs=(blockID,))
+        d.addCallback(self._add_block_id_for_result, blockID)
+        d.addErrback(self._add_block_id_for_failure, blockID)
         d.addBoth(self.update_cell_prompt, blockID=blockID)
         d.addCallbacks(self.render_result, 
             errback=self.render_error)
diff --git a/IPython/genutils.py b/IPython/genutils.py
index eb11efe..b19ae3e 100644
--- a/IPython/genutils.py
+++ b/IPython/genutils.py
@@ -97,8 +97,8 @@ class IOStream:
 
     def close(self):
         pass
-                
-        
+
+
 class IOTerm:
     """ Term holds the file or file-like objects for handling I/O operations.
 
@@ -113,16 +113,16 @@ class IOTerm:
         self.cin  = IOStream(cin,sys.stdin)
         self.cout = IOStream(cout,sys.stdout)
         self.cerr = IOStream(cerr,sys.stderr)
-        
+
 # Global variable to be used for all I/O
 Term = IOTerm()
 
 import IPython.rlineimpl as readline
 # Remake Term to use the readline i/o facilities
 if sys.platform == 'win32' and readline.have_readline:
-    
+
     Term = IOTerm(cout=readline._outputfile,cerr=readline._outputfile)
-    
+
 
 #****************************************************************************
 # Generic warning/error printer, used by everything else
@@ -130,9 +130,9 @@ def warn(msg,level=2,exit_val=1):
     """Standard warning printer. Gives formatting consistency.
 
     Output is sent to Term.cerr (sys.stderr by default).
-    
+
     Options:
-    
+
     -level(2): allows finer control:
       0 -> Do nothing, dummy function.
       1 -> Print message.
@@ -142,7 +142,7 @@ def warn(msg,level=2,exit_val=1):
 
     -exit_val (1): exit value returned by sys.exit() for a level 4
     warning. Ignored for all other levels."""
-    
+
     if level>0:
         header = ['','','WARNING: ','ERROR: ','FATAL ERROR: ']
         print >> Term.cerr, '%s%s' % (header[level],msg)
@@ -167,10 +167,10 @@ def fatal(msg,exit_val=1):
 
 #---------------------------------------------------------------------------
 # Debugging routines
-# 
+#
 def debugx(expr,pre_msg=''):
     """Print the value of an expression from the caller's frame.
-    
+
     Takes an expression, evaluates it in the caller's frame and prints both
     the given expression and the resulting value (as well as a debug mark
     indicating the name of the calling function.  The input must be of a form
@@ -178,7 +178,7 @@ def debugx(expr,pre_msg=''):
 
     An optional message can be passed, which will be prepended to the printed
     expr->value pair."""
-    
+
     cf = sys._getframe(1)
     print '[DBG:%s] %s%s -> %r' % (cf.f_code.co_name,pre_msg,expr,
                                    eval(expr,cf.f_globals,cf.f_locals))
@@ -200,18 +200,18 @@ try:
         Return the *USER* CPU time in seconds since the start of the process.
         This is done via a call to resource.getrusage, so it avoids the
         wraparound problems in time.clock()."""
-        
+
         return resource.getrusage(resource.RUSAGE_SELF)[0]
-    
+
     def clocks():
         """clocks() -> floating point number
 
         Return the *SYSTEM* CPU time in seconds since the start of the process.
         This is done via a call to resource.getrusage, so it avoids the
         wraparound problems in time.clock()."""
-        
+
         return resource.getrusage(resource.RUSAGE_SELF)[1]
-    
+
     def clock():
         """clock() -> floating point number
 
@@ -219,9 +219,9 @@ try:
         the process.  This is done via a call to resource.getrusage, so it
         avoids the wraparound problems in time.clock()."""
 
-        u,s = resource.getrusage(resource.RUSAGE_SELF)[:2] 
+        u,s = resource.getrusage(resource.RUSAGE_SELF)[:2]
         return u+s
-    
+
     def clock2():
         """clock2() -> (t_user,t_system)
 
@@ -247,7 +247,7 @@ def timings_out(reps,func,*args,**kw):
     Under Unix, the return value is the sum of user+system time consumed by
     the process, computed via the resource module.  This prevents problems
     related to the wraparound effect which the time.clock() function has.
-    
+
     Under Windows the return value is in wall clock seconds. See the
     documentation for the time module for more details."""
 
@@ -310,7 +310,7 @@ def system(cmd,verbose=0,debug=0,header=''):
     Options:
 
     - verbose (0): print the command to be executed.
-    
+
     - debug (0): only print, do not actually execute.
 
     - header (''): Header to print on screen prior to the executed command (it
@@ -334,15 +334,15 @@ def abbrev_cwd():
         if len(cwd) < 4:
             return cwd
         drivepart,tail = os.path.splitdrive(cwd)
-    
 
-    parts = tail.split('/')    
+
+    parts = tail.split('/')
     if len(parts) > 2:
         tail = '/'.join(parts[-2:])
-        
+
     return (drivepart + (
         cwd == '/' and '/' or tail))
-    
+
 
 # This function is used by ipython in a lot of places to make system calls.
 # We need it to be slightly different under win32, due to the vagaries of
@@ -354,7 +354,7 @@ def shell(cmd,verbose=0,debug=0,header=''):
     Options:
 
     - verbose (0): print the command to be executed.
-    
+
     - debug (0): only print, do not actually execute.
 
     - header (''): Header to print on screen prior to the executed command (it
@@ -368,7 +368,7 @@ def shell(cmd,verbose=0,debug=0,header=''):
     if verbose or debug: print header+cmd
     # flush stdout so we don't mangle python's buffering
     sys.stdout.flush()
-    
+
     if not debug:
         platutils.set_term_title("IPy " + cmd)
         os.system(cmd)
@@ -406,10 +406,10 @@ def getoutput(cmd,verbose=0,debug=0,header='',split=0):
 
     Note: a stateful version of this function is available through the
     SystemExec class.
-    
-    This is pretty much deprecated and rarely used, 
+
+    This is pretty much deprecated and rarely used,
     genutils.getoutputerror may be what you need.
-    
+
     """
 
     if verbose or debug: print header+cmd
@@ -461,7 +461,7 @@ class SystemExec:
 
     Note: here we refer to the system and getoutput functions from this
     library, not the ones from the standard python library.
-    
+
     This class offers the system and getoutput functions as methods, but the
     verbose, debug and header parameters can be set for the instance (at
     creation time or later) so that they don't need to be specified on each
@@ -476,13 +476,9 @@ class SystemExec:
      - bq: alias to getoutput
 
     An instance can then be created as:
-     >>> sysexec = SystemExec(verbose=1,debug=0,header='Calling: ')
-
-    And used as:
-     >>> sysexec.xsys('pwd')
-     >>> dirlist = sysexec.bq('ls -l')
+    >>> sysexec = SystemExec(verbose=1,debug=0,header='Calling: ')
     """
-    
+
     def __init__(self,verbose=0,debug=0,header='',split=0):
         """Specify the instance's values for verbose, debug and header."""
         setattr_list(self,'verbose debug header split')
@@ -634,7 +630,7 @@ def process_cmdline(argv,names=[],defaults={},usage=''):
     Arguments:
 
     - argv: list of arguments, typically sys.argv.
-    
+
     - names: list of option names. See DPyGetOpt docs for details on options
     syntax.
 
@@ -656,7 +652,7 @@ def process_cmdline(argv,names=[],defaults={},usage=''):
 
     defaults.update(getopt.optionValues)
     args = getopt.freeValues
-    
+
     return defaults,args
 
 #----------------------------------------------------------------------------
@@ -684,8 +680,7 @@ def optstr2types(ostr):
 
 #----------------------------------------------------------------------------
 def read_dict(filename,type_conv=None,**opt):
-
-    """Read a dictionary of key=value pairs from an input file, optionally
+    r"""Read a dictionary of key=value pairs from an input file, optionally
     performing conversions on the resulting values.
 
     read_dict(filename,type_conv,**opt) -> dict
@@ -731,20 +726,33 @@ def read_dict(filename,type_conv=None,**opt):
         to make a list of all appearances.
 
     Example:
-    If the input file test.ini has:
-      i 3
-      x 4.5
-      y 5.5
-      s hi ho
-    Then:
 
+    If the input file test.ini contains (we put it in a string to keep the test
+    self-contained):
+
+    >>> test_ini = '''\
+    ... i 3
+    ... x 4.5
+    ... y 5.5
+    ... s hi ho'''
+
+    Then we can use it as follows:
     >>> type_conv={int:'i',float:'x',None:'s'}
-    >>> read_dict('test.ini')
-    {'i': '3', 's': 'hi ho', 'x': '4.5', 'y': '5.5'}
-    >>> read_dict('test.ini',type_conv)
-    {'i': 3, 's': 'hi ho', 'x': 4.5, 'y': '5.5'}
-    >>> read_dict('test.ini',type_conv,purge=1)
-    {'i': 3, 's': 'hi ho', 'x': 4.5}
+
+    >>> d = read_dict(test_ini)
+
+    >>> sorted(d.items())
+    [('i', '3'), ('s', 'hi ho'), ('x', '4.5'), ('y', '5.5')]
+
+    >>> d = read_dict(test_ini,type_conv)
+
+    >>> sorted(d.items())
+    [('i', 3), ('s', 'hi ho'), ('x', 4.5), ('y', '5.5')]
+
+    >>> d = read_dict(test_ini,type_conv,purge=True)
+
+    >>> sorted(d.items())
+    [('i', 3), ('s', 'hi ho'), ('x', 4.5)]
     """
 
     # starting config
@@ -762,9 +770,15 @@ def read_dict(filename,type_conv=None,**opt):
         raise ValueError, 'Unique keys must be given as a string, List or Tuple'
 
     dict = {}
+
     # first read in table of values as strings
-    file = open(filename,'r')
-    for line in file.readlines():
+    if '\n' in filename:
+        lines = filename.splitlines()
+        file = None
+    else:
+        file = open(filename,'r')
+        lines = file.readlines()
+    for line in lines:
         line = line.strip()
         if len(line) and line[0]=='#': continue
         if len(line)>0:
@@ -831,7 +845,7 @@ def flag_calls(func):
 
     Testing for truth in wrapper.called allows you to determine if a call to
     func() was attempted and succeeded."""
-    
+
     def wrapper(*args,**kw):
         wrapper.called = False
         out = func(*args,**kw)
@@ -853,7 +867,7 @@ def dhook_wrap(func,*a,**k):
     """
 
     def f(*a,**k):
-    
+
         dhook_s = sys.displayhook
         sys.displayhook = sys.__displayhook__
         try:
@@ -873,10 +887,10 @@ def doctest_reload():
     This routine:
 
       - reloads doctest
-      
+
       - resets its global 'master' attribute to None, so that multiple uses of
       the module interactively don't produce cumulative reports.
-    
+
       - Monkeypatches its core test runner method to protect it from IPython's
       modified displayhook.  Doctest expects the default displayhook behavior
       deep down, so our modification breaks it completely.  For this reason, a
@@ -910,16 +924,16 @@ def get_home_dir():
 
     isdir = os.path.isdir
     env = os.environ
-    
+
     # first, check py2exe distribution root directory for _ipython.
     # This overrides all. Normally does not exist.
-    
+
     if '\\library.zip\\' in IPython.__file__.lower():
         root, rest = IPython.__file__.lower().split('library.zip')
         if isdir(root + '_ipython'):
             os.environ["IPYKITROOT"] = root.rstrip('\\')
             return root
-    
+
     try:
         homedir = env['HOME']
         if not isdir(homedir):
@@ -977,7 +991,7 @@ class LSString(str):
         .n (or .nlstr): original value (the string itself).
         .s (or .spstr): value as whitespace-separated string.
         .p (or .paths): list of path objects
-        
+
     Any values which require transformations are computed only once and
     cached.
 
@@ -1013,14 +1027,14 @@ class LSString(str):
         except AttributeError:
             self.__paths = [path(p) for p in self.split('\n') if os.path.exists(p)]
             return self.__paths
-    
+
     p = paths = property(get_paths)
 
 def print_lsstring(arg):
     """ Prettier (non-repr-like) and more informative printer for LSString """
     print "LSString (.p, .n, .l, .s available). Value:"
     print arg
-    
+
 print_lsstring = result_display.when_type(LSString)(print_lsstring)
 
 #----------------------------------------------------------------------------
@@ -1033,7 +1047,7 @@ class SList(list):
         .n (or .nlstr): value as a string, joined on newlines.
         .s (or .spstr): value as a string, joined on spaces.
         .p (or .paths): list of path objects
-        
+
     Any values which require transformations are computed only once and
     cached."""
 
@@ -1059,32 +1073,32 @@ class SList(list):
             return self.__nlstr
 
     n = nlstr = property(get_nlstr)
-    
+
     def get_paths(self):
         try:
             return self.__paths
         except AttributeError:
             self.__paths = [path(p) for p in self if os.path.exists(p)]
             return self.__paths
-    
+
     p = paths = property(get_paths)
 
     def grep(self, pattern, prune = False, field = None):
-        """ Return all strings matching 'pattern' (a regex or callable) 
-        
+        """ Return all strings matching 'pattern' (a regex or callable)
+
         This is case-insensitive. If prune is true, return all items
         NOT matching the pattern.
-        
-        If field is specified, the match must occur in the specified 
+
+        If field is specified, the match must occur in the specified
         whitespace-separated field.
-               
+
         Examples::
-        
+
             a.grep( lambda x: x.startswith('C') )
             a.grep('Cha.*log', prune=1)
             a.grep('chm', field=-1)
         """
-        
+
         def match_target(s):
             if field is None:
                 return s
@@ -1094,7 +1108,7 @@ class SList(list):
                 return tgt
             except IndexError:
                 return ""
-        
+
         if isinstance(pattern, basestring):
             pred = lambda x : re.search(pattern, x, re.IGNORECASE)
         else:
@@ -1105,25 +1119,25 @@ class SList(list):
             return SList([el for el in self if not pred(match_target(el))])
     def fields(self, *fields):
         """ Collect whitespace-separated fields from string list
-        
+
         Allows quick awk-like usage of string lists.
-        
+
         Example data (in var a, created by 'a = !ls -l')::
             -rwxrwxrwx  1 ville None      18 Dec 14  2006 ChangeLog
-            drwxrwxrwx+ 6 ville None       0 Oct 24 18:05 IPython        
-        
+            drwxrwxrwx+ 6 ville None       0 Oct 24 18:05 IPython
+
         a.fields(0) is ['-rwxrwxrwx', 'drwxrwxrwx+']
         a.fields(1,0) is ['1 -rwxrwxrwx', '6 drwxrwxrwx+']
         (note the joining by space).
         a.fields(-1) is ['ChangeLog', 'IPython']
-        
+
         IndexErrors are ignored.
-        
+
         Without args, fields() just split()'s the strings.
         """
         if len(fields) == 0:
             return [el.split() for el in self]
-        
+
         res = SList()
         for el in [f.split() for f in self]:
             lineparts = []
@@ -1135,18 +1149,18 @@ class SList(list):
                     pass
             if lineparts:
                 res.append(" ".join(lineparts))
-            
-        return res        
+
+        return res
     def sort(self,field= None,  nums = False):
         """ sort by specified fields (see fields())
-        
+
         Example::
             a.sort(1, nums = True)
-        
+
         Sorts a by second field, in numerical order (so that 21 > 3)
-        
-        """ 
-        
+
+        """
+
         #decorate, sort, undecorate
         if field is not None:
             dsu = [[SList([line]).fields(field),  line] for line in self]
@@ -1160,8 +1174,8 @@ class SList(list):
                 except ValueError:
                     n = 0;
                 dsu[i][0] = n
-                
-                
+
+
         dsu.sort()
         return SList([t[1] for t in dsu])
 
@@ -1171,9 +1185,9 @@ def print_slist(arg):
     if hasattr(arg,  'hideonce') and arg.hideonce:
         arg.hideonce = False
         return
-        
+
     nlprint(arg)
-    
+
 print_slist = result_display.when_type(SList)(print_slist)
 
 
@@ -1187,14 +1201,14 @@ def esc_quotes(strng):
 #----------------------------------------------------------------------------
 def make_quoted_expr(s):
     """Return string s in appropriate quotes, using raw string if possible.
-    
+
     Effectively this turns string: cd \ao\ao\
     to: r"cd \ao\ao\_"[:-1]
-    
+
     Note the use of raw string and padding at the end to allow trailing backslash.
-    
+
     """
-    
+
     tail = ''
     tailpadding = ''
     raw  = ''
@@ -1245,7 +1259,7 @@ def raw_input_multi(header='', ps1='==> ', ps2='..> ',terminate_str = '.'):
             while new_line.endswith('\\'):
                 new_line = new_line[:-1] + raw_input(ps2)
             lines.append(new_line)
-                
+
         return lines[:-1]  # don't return the termination command
     except EOFError:
         print
@@ -1287,7 +1301,7 @@ def ask_yes_no(prompt,default=None):
                 print
             else:
                 raise
-            
+
     return answers[ans]
 
 #----------------------------------------------------------------------------
@@ -1306,9 +1320,12 @@ class EvalDict:
     Emulate a dict which evaluates its contents in the caller's frame.
 
     Usage:
-    >>>number = 19
-    >>>text = "python"
-    >>>print "%(text.capitalize())s %(number/9.0).1f rules!" % EvalDict()
+    >>> number = 19
+
+    >>> text = "python"
+
+    >>> print "%(text.capitalize())s %(number/9.0).1f rules!" % EvalDict()
+    Python 2.1 rules!
     """
 
     # This version is due to sismex01@hebmex.com on c.l.py, and is basically a
@@ -1328,14 +1345,19 @@ def qw(words,flat=0,sep=None,maxsplit=-1):
     qw(words,flat=0,sep=' ',maxsplit=-1) -> words.split(sep,maxsplit)
 
     words can also be a list itself, and with flat=1, the output will be
-    recursively flattened. Examples:
+    recursively flattened.
+
+    Examples:
 
     >>> qw('1 2')
     ['1', '2']
+
     >>> qw(['a b','1 2',['m n','p q']])
     [['a', 'b'], ['1', '2'], [['m', 'n'], ['p', 'q']]]
+
     >>> qw(['a b','1 2',['m n','p q']],flat=1)
-    ['a', 'b', '1', '2', 'm', 'n', 'p', 'q']    """
+    ['a', 'b', '1', '2', 'm', 'n', 'p', 'q']
+    """
 
     if type(words) in StringTypes:
         return [word.strip() for word in words.split(sep,maxsplit)
@@ -1415,7 +1437,7 @@ def igrep(pat,list):
 #----------------------------------------------------------------------------
 def indent(str,nspaces=4,ntabs=0):
     """Indent a string a given number of spaces or tabstops.
-    
+
     indent(str,nspaces=4,ntabs=0) -> indent str by ntabs+nspaces.
     """
     if str is None:
@@ -1426,7 +1448,7 @@ def indent(str,nspaces=4,ntabs=0):
         return outstr[:-len(ind)]
     else:
         return outstr
-    
+
 #-----------------------------------------------------------------------------
 def native_line_ends(filename,backup=1):
     """Convert (in-place) a file to line-ends native to the current OS.
@@ -1452,13 +1474,13 @@ def native_line_ends(filename,backup=1):
             os.remove(bak_filename)
         except:
             pass
-    
+
 #----------------------------------------------------------------------------
 def get_pager_cmd(pager_cmd = None):
     """Return a pager command.
 
     Makes some attempts at finding an OS-correct one."""
-    
+
     if os.name == 'posix':
         default_pager_cmd = 'less -r'  # -r for color control sequences
     elif os.name in ['nt','dos']:
@@ -1570,7 +1592,7 @@ def page(strng,start=0,screen_lines=0,pager_cmd = None):
             return
         except IPython.ipapi.TryNext:
             pass
-        
+
     # Ugly kludge, but calling curses.initscr() flat out crashes in emacs
     TERM = os.environ.get('TERM','dumb')
     if TERM in ['dumb','emacs'] and os.name != 'nt':
@@ -1581,7 +1603,7 @@ def page(strng,start=0,screen_lines=0,pager_cmd = None):
     str_toprint = os.linesep.join(str_lines)
     num_newlines = len(str_lines)
     len_str = len(str_toprint)
-    
+
     # Dumb heuristics to guesstimate number of on-screen lines the string
     # takes.  Very basic, but good enough for docstrings in reasonable
     # terminals. If someone later feels like refining it, it's not hard.
@@ -1738,7 +1760,7 @@ def uniq_stable(elems):
     Note: All elements in the input must be valid dictionary keys for this
     routine to work, as it internally uses a dictionary for efficiency
     reasons."""
-    
+
     unique = []
     unique_dict = {}
     for nn in elems:
@@ -1753,13 +1775,13 @@ class NLprinter:
 
     An instance of this class called nlprint is available and callable as a
     function.
-    
+
     nlprint(list,indent=' ',sep=': ') -> prints indenting each level by 'indent'
     and using 'sep' to separate the index from the value. """
 
     def __init__(self):
         self.depth = 0
-    
+
     def __call__(self,lst,pos='',**kw):
         """Prints the nested list numbering levels."""
         kw.setdefault('indent',' ')
@@ -1772,7 +1794,7 @@ class NLprinter:
         stop = kw['stop']; del kw['stop']
         if self.depth == 0 and 'header' in kw.keys():
             print kw['header']
-            
+
         for idx in range(start,stop):
             elem = lst[idx]
             if type(elem)==type([]):
@@ -1804,20 +1826,6 @@ def sort_compare(lst1,lst2,inplace = 1):
     return lst1 == lst2
 
 #----------------------------------------------------------------------------
-def mkdict(**kwargs):
-    """Return a dict from a keyword list.
-
-    It's just syntactic sugar for making ditcionary creation more convenient:
-    # the standard way
-    >>>data = { 'red' : 1, 'green' : 2, 'blue' : 3 }
-    # a cleaner way
-    >>>data = dict(red=1, green=2, blue=3)
-
-    If you need more than this, look at the Struct() class."""
-
-    return kwargs
-
-#----------------------------------------------------------------------------
 def list2dict(lst):
     """Takes a list of (key,value) pairs and turns it into a dict."""
 
@@ -1935,7 +1943,7 @@ def getattr_list(obj,alist,*args):
             raise ValueError,'getattr_list() takes only one optional argument'
     else:
         return map(lambda attr: getattr(obj,attr),alist)
-    
+
 #----------------------------------------------------------------------------
 def map_method(method,object_list,*argseq,**kw):
     """map_method(method,object_list,*args,**kw) -> list
@@ -1987,7 +1995,7 @@ def dir2(obj):
     are later not really valid for attribute access (many extension libraries
     have such bugs).
     """
-    
+
     # Start building the attribute list via dir(), and then complete it
     # with a few extra special-purpose calls.
     words = dir(obj)
@@ -2064,7 +2072,7 @@ def popkey(dct,key,default=NotGiven):
 
 def wrap_deprecated(func, suggest = '<nothing>'):
     def newFunc(*args, **kwargs):
-        warnings.warn("Call to deprecated function %s, use %s instead" % 
+        warnings.warn("Call to deprecated function %s, use %s instead" %
                       ( func.__name__, suggest),
                       category=DeprecationWarning,
                       stacklevel = 2)
@@ -2098,7 +2106,7 @@ def num_cpus():
    If it can't find a sensible answer, it returns 1 (though an error *may* make
    it return a large positive number that's actually incorrect).
    """
-   
+
    # Many thanks to the Parallel Python project (http://www.parallelpython.com)
    # for the names of the keys we needed to look up for this function.  This
    # code was inspired by their equivalent function.
diff --git a/IPython/ipapi.py b/IPython/ipapi.py
index d9c3cd0..81580cd 100644
--- a/IPython/ipapi.py
+++ b/IPython/ipapi.py
@@ -1,4 +1,4 @@
-''' IPython customization API
+"""IPython customization API
 
 Your one-stop module for configuring & extending ipython
 
@@ -29,50 +29,50 @@ import IPython.ipapi
 ip = IPython.ipapi.get()
 
 def ankka_f(self, arg):
-    print "Ankka",self,"says uppercase:",arg.upper()
+    print 'Ankka',self,'says uppercase:',arg.upper()
 
-ip.expose_magic("ankka",ankka_f)
+ip.expose_magic('ankka',ankka_f)
 
 ip.magic('alias sayhi echo "Testing, hi ok"')
 ip.magic('alias helloworld echo "Hello world"')
 ip.system('pwd')
 
 ip.ex('import re')
-ip.ex("""
+ip.ex('''
 def funcci(a,b):
     print a+b
 print funcci(3,4)
-""")
-ip.ex("funcci(348,9)")
+''')
+ip.ex('funcci(348,9)')
 
 def jed_editor(self,filename, linenum=None):
-    print "Calling my own editor, jed ... via hook!"
+    print 'Calling my own editor, jed ... via hook!'
     import os
     if linenum is None: linenum = 0
     os.system('jed +%d %s' % (linenum, filename))
-    print "exiting jed"
+    print 'exiting jed'
 
 ip.set_hook('editor',jed_editor)
 
 o = ip.options
 o.autocall = 2  # FULL autocall mode
 
-print "done!"
-'''
+print 'done!'
+"""
+
+#-----------------------------------------------------------------------------
+# Modules and globals
 
 # stdlib imports
 import __builtin__
 import sys
 
-try: # Python 2.3 compatibility
-    set
-except NameError:
-    import sets
-    set = sets.Set
+# contains the most recently instantiated IPApi
+_RECENT_IP = None
+
+#-----------------------------------------------------------------------------
+# Code begins
 
-# our own
-#from IPython.genutils import warn,error
- 
 class TryNext(Exception):
     """Try next hook exception.
      
@@ -86,6 +86,7 @@ class TryNext(Exception):
         self.args = args
         self.kwargs = kwargs
 
+
 class UsageError(Exception):
     """ Error in magic function arguments, etc.
     
@@ -93,6 +94,7 @@ class UsageError(Exception):
     nevertheless interrupt a macro / batch file.   
     """
 
+
 class IPyAutocall:
     """ Instances of this class are always autocalled
     
@@ -109,8 +111,6 @@ class IPyAutocall:
         self._ip = ip
     
 
-# contains the most recently instantiated IPApi
-
 class IPythonNotRunning:
     """Dummy do-nothing class.
 
@@ -144,8 +144,6 @@ class IPythonNotRunning:
         """Dummy function, which doesn't do anything and emits no warnings."""
         pass
 
-_recent = None
-
 
 def get(allow_dummy=False,dummy_warn=True):
     """Get an IPApi object.
@@ -159,12 +157,13 @@ def get(allow_dummy=False,dummy_warn=True):
     can be imported as normal modules. You can then direct all the
     configuration operations against the returned object.
     """
-    global _recent
-    if allow_dummy and not _recent:
-        _recent = IPythonNotRunning(dummy_warn)
-    return _recent
+    global _RECENT_IP
+    if allow_dummy and not _RECENT_IP:
+        _RECENT_IP = IPythonNotRunning(dummy_warn)
+    return _RECENT_IP
+
 
-class IPApi:
+class IPApi(object):
     """ The actual API class for configuring IPython 
     
     You should do all of the IPython configuration by getting an IPApi object
@@ -173,6 +172,8 @@ class IPApi:
     
     def __init__(self,ip):
         
+        global _RECENT_IP
+
         # All attributes exposed here are considered to be the public API of
         # IPython.  As needs dictate, some of these may be wrapped as
         # properties.
@@ -201,8 +202,7 @@ class IPApi:
 
         self.dbg = DebugTools(self)
         
-        global _recent
-        _recent = self
+        _RECENT_IP = self
 
     # Use a property for some things which are added to the instance very
     # late.  I don't have time right now to disentangle the initialization
@@ -218,8 +218,8 @@ class IPApi:
         """All configurable variables."""
         
         # catch typos by disabling new attribute creation. If new attr creation
-        # is in fact wanted (e.g. when exposing new options), do allow_new_attr(True) 
-        # for the received rc struct.
+        # is in fact wanted (e.g. when exposing new options), do
+        # allow_new_attr(True) for the received rc struct.
         
         self.IP.rc.allow_new_attr(False)
         return self.IP.rc
@@ -227,22 +227,23 @@ class IPApi:
     options = property(get_options,None,None,get_options.__doc__)
     
     def expose_magic(self,magicname, func):
-        ''' Expose own function as magic function for ipython 
+        """Expose own function as magic function for ipython 
     
         def foo_impl(self,parameter_s=''):
-            """My very own magic!. (Use docstrings, IPython reads them)."""
-            print 'Magic function. Passed parameter is between < >: <'+parameter_s+'>'
+            'My very own magic!. (Use docstrings, IPython reads them).'
+            print 'Magic function. Passed parameter is between < >:'
+            print '<%s>' % parameter_s
             print 'The self object is:',self
     
-        ipapi.expose_magic("foo",foo_impl)
-        '''
-                
+        ipapi.expose_magic('foo',foo_impl)
+        """
+        
         import new
         im = new.instancemethod(func,self.IP, self.IP.__class__)
         old = getattr(self.IP, "magic_" + magicname, None)
         if old:
-            self.dbg.debug_stack("Magic redefinition '%s', old %s" % (magicname,
-                                 old))
+            self.dbg.debug_stack("Magic redefinition '%s', old %s" %
+                                 (magicname,old) )
             
         setattr(self.IP, "magic_" + magicname, im)
     
@@ -267,10 +268,10 @@ class IPApi:
         def cleanup_ipy_script(script):
             """ Make a script safe for _ip.runlines() 
             
-            - Removes empty lines
-            - Suffixes all indented blocks that end with unindented lines with empty lines
-            
+            - Removes empty lines Suffixes all indented blocks that end with
+            - unindented lines with empty lines
             """
+            
             res = []
             lines = script.splitlines()
 
@@ -290,7 +291,8 @@ class IPApi:
                         s.startswith('finally')):
                         return True
                         
-                if level > 0 and newlevel == 0 and not is_secondary_block_start(stripped): 
+                if level > 0 and newlevel == 0 and \
+                       not is_secondary_block_start(stripped): 
                     # add empty line
                     res.append('')
                     
@@ -303,8 +305,9 @@ class IPApi:
         else:
             script = '\n'.join(lines)
         clean=cleanup_ipy_script(script)
-        # print "_ip.runlines() script:\n",clean #dbg
+        # print "_ip.runlines() script:\n",clean # dbg
         self.IP.runlines(clean)
+        
     def to_user_ns(self,vars, interactive = True):
         """Inject a group of variables into the IPython user namespace.
 
@@ -392,7 +395,6 @@ class IPApi:
             for name,val in vdict.iteritems():
                 config_ns[name] = val                    
 
-
     def expand_alias(self,line):
         """ Expand an alias in the command line 
         
@@ -425,11 +427,9 @@ class IPApi:
 
         self.dbg.check_hotname(name)
         
-
         if name in self.IP.alias_table:
-            self.dbg.debug_stack("Alias redefinition: '%s' => '%s' (old '%s')" %
-                             (name, cmd, self.IP.alias_table[name]))
-            
+            self.dbg.debug_stack("Alias redefinition: '%s' => '%s' (old '%s')"
+                                 % (name, cmd, self.IP.alias_table[name]))
 
         if callable(cmd):
             self.IP.alias_table[name] = cmd
@@ -440,8 +440,8 @@ class IPApi:
         if isinstance(cmd,basestring):
             nargs = cmd.count('%s')
             if nargs>0 and cmd.find('%l')>=0:
-                raise Exception('The %s and %l specifiers are mutually exclusive '
-                                'in alias definitions.')
+                raise Exception('The %s and %l specifiers are mutually '
+                                'exclusive in alias definitions.')
                   
             self.IP.alias_table[name] = (nargs,cmd)
             return
@@ -494,8 +494,8 @@ class IPApi:
         
         - run init_ipython(ip)
         - run ipython_firstrun(ip)
-        
         """
+        
         if mod in self.extensions:
             # just to make sure we don't init it twice
             # note that if you 'load' a module that has already been
@@ -545,6 +545,7 @@ class DebugTools:
         if name in self.hotnames:
             self.debug_stack( "HotName '%s' caught" % name)
 
+
 def launch_new_instance(user_ns = None,shellclass = None):
     """ Make and start a new ipython instance.
     
diff --git a/IPython/iplib.py b/IPython/iplib.py
index d7c8440..5c69e1c 100644
--- a/IPython/iplib.py
+++ b/IPython/iplib.py
@@ -212,14 +212,7 @@ class InteractiveShell(object,Magic):
 
         # log system
         self.logger = Logger(self,logfname='ipython_log.py',logmode='rotate')
-
-        # some minimal strict typechecks.  For some core data structures, I
-        # want actual basic python types, not just anything that looks like
-        # one.  This is especially true for the global namespace.
-        if user_global_ns is not None and type(user_global_ns) is not dict:
-            raise TypeError('global namespace must be a true dict; got %r'
-                % type(user_global_ns))
-
+            
         # Job manager (for jobs run as background threads)
         self.jobs = BackgroundJobManager()
 
@@ -1007,10 +1000,17 @@ class InteractiveShell(object,Magic):
 
         Simple usage example:
 
-        In [1]: x = 'hello'
+        In [7]: x = 'hello'
 
-        In [2]: __IP.complete('x.l')
-        Out[2]: ['x.ljust', 'x.lower', 'x.lstrip']"""
+        In [8]: x
+        Out[8]: 'hello'
+
+        In [9]: print x
+        hello
+
+        In [10]: _ip.IP.complete('x.l')
+        Out[10]: ['x.ljust', 'x.lower', 'x.lstrip'] # random
+        """
         
         complete = self.Completer.complete
         state = 0
@@ -1026,6 +1026,8 @@ class InteractiveShell(object,Magic):
             state += 1
         outcomps = comps.keys()
         outcomps.sort()
+        #print "T:",text,"OC:",outcomps  # dbg
+        #print "vars:",self.user_ns.keys()
         return outcomps
         
     def set_completer_frame(self, frame=None):
@@ -1636,6 +1638,7 @@ want to merge them back into the new files.""" % locals()
         # previous call (which most likely existed in a separate scope).
         local_varnames = local_ns.keys()
         self.user_ns.update(local_ns)
+        #self.user_ns['local_ns'] = local_ns  # dbg
 
         # Patch for global embedding to make sure that things don't overwrite
         # user globals accidentally. Thanks to Richard <rxe@renre-europe.com>
@@ -2352,14 +2355,15 @@ want to merge them back into the new files.""" % locals()
     def handle_auto(self, line_info):
         """Hande lines which can be auto-executed, quoting if requested."""
 
-        #print 'pre <%s> iFun <%s> rest <%s>' % (pre,iFun,theRest)  # dbg
         line    = line_info.line
         iFun    = line_info.iFun
         theRest = line_info.theRest
         pre     = line_info.pre
         continue_prompt = line_info.continue_prompt
         obj = line_info.ofind(self)['obj']
-        
+
+        #print 'pre <%s> iFun <%s> rest <%s>' % (pre,iFun,theRest)  # dbg
+
         # This should only be active for single-line input!
         if continue_prompt:
             self.log(line,line,continue_prompt)
diff --git a/IPython/ipstruct.py b/IPython/ipstruct.py
index 47cdf1e..b85e9d5 100644
--- a/IPython/ipstruct.py
+++ b/IPython/ipstruct.py
@@ -88,8 +88,8 @@ class Struct:
     initialization): keys can't be numbers. But numeric keys can be used and
     accessed using the dictionary syntax. Again, an example:
 
-    This doesn't work:
-    >>> s=Struct(4='hi')  #doctest: +IGNORE_EXCEPTION_DETAIL
+    This doesn't work (prompt changed to avoid confusing the test system):
+    ->> s=Struct(4='hi')
     Traceback (most recent call last):
         ...
     SyntaxError: keyword can't be an expression
diff --git a/IPython/kernel/contexts.py b/IPython/kernel/contexts.py
index 7ca51db..553f140 100644
--- a/IPython/kernel/contexts.py
+++ b/IPython/kernel/contexts.py
@@ -48,7 +48,7 @@ def strip_whitespace(source,require_remote=True):
     """strip leading whitespace from input source.
 
     :Parameters:
-    
+
     """
     remote_mark = 'remote()'
     # Expand tabs to avoid any confusion.
@@ -101,7 +101,7 @@ def strip_whitespace(source,require_remote=True):
 class RemoteContextBase(object):
     def __init__(self):
         self.ip = ipapi.get()
-    
+
     def _findsource_file(self,f):
         linecache.checkcache()
         s = findsource(f.f_code)
@@ -113,10 +113,10 @@ class RemoteContextBase(object):
         from IPython import ipapi
         self.ip = ipapi.get()
         buf = self.ip.IP.input_hist_raw[-1].splitlines()[1:]
-        wsource = [l+'\n' for l in buf ] 
-                   
+        wsource = [l+'\n' for l in buf ]
+
         return strip_whitespace(wsource)
-        
+
     def findsource(self,frame):
         local_ns = frame.f_locals
         global_ns = frame.f_globals
@@ -128,7 +128,7 @@ class RemoteContextBase(object):
 
     def __enter__(self):
         raise NotImplementedError
-        
+
     def __exit__ (self, etype, value, tb):
         if issubclass(etype,error.StopLocalExecution):
             return True
@@ -141,40 +141,3 @@ class RemoteMultiEngine(RemoteContextBase):
     def __enter__(self):
         src = self.findsource(sys._getframe(1))
         return self.mec.execute(src)
-
-
-# XXX - Temporary hackish testing, we'll move this into proper tests right
-# away.  This has been commented out as it doesn't run under Python 2.4
-# because of the usage of the with statement below.  We need to protect
-# such things with a try:except.
-
-# if __name__ == '__main__':
-# 
-#     # XXX - for now, we need a running cluster to be started separately.  The
-#     # daemon work is almost finished, and will make much of this unnecessary.
-#     from IPython.kernel import client
-#     mec = client.MultiEngineClient(('127.0.0.1',10105))
-# 
-#     try:
-#         mec.get_ids()
-#     except ConnectionRefusedError:
-#         import os, time
-#         os.system('ipcluster -n 2 &')
-#         time.sleep(2)
-#         mec = client.MultiEngineClient(('127.0.0.1',10105))
-# 
-#     mec.block = False
-# 
-#     import itertools
-#     c = itertools.count()
-# 
-#     parallel = RemoteMultiEngine(mec)
-# 
-#     with parallel as pr:
-#         # A comment
-#         remote()  # this means the code below only runs remotely
-#         print 'Hello remote world'
-#         x = 3.14
-#         # Comments are OK
-#         # Even misindented.
-#         y = x+1
diff --git a/IPython/kernel/core/notification.py b/IPython/kernel/core/notification.py
new file mode 100644
index 0000000..af5d236
--- /dev/null
+++ b/IPython/kernel/core/notification.py
@@ -0,0 +1,123 @@
+# encoding: utf-8
+
+"""The IPython Core Notification Center.
+
+See docs/source/development/notification_blueprint.txt for an overview of the
+notification module.
+"""
+
+__docformat__ = "restructuredtext en"
+                                                                              
+#-----------------------------------------------------------------------------
+#  Copyright (C) 2008  The IPython Development Team                           
+#                                                                             
+#  Distributed under the terms of the BSD License.  The full license is in    
+#  the file COPYING, distributed as part of this software.                    
+#-----------------------------------------------------------------------------
+
+
+class NotificationCenter(object):
+    """Synchronous notification center
+    
+    Example
+    -------
+    >>> import IPython.kernel.core.notification as notification
+    >>> def callback(theType, theSender, args={}):
+    ...     print theType,theSender,args
+    ...     
+    >>> notification.sharedCenter.add_observer(callback, 'NOTIFICATION_TYPE', None)
+    >>> notification.sharedCenter.post_notification('NOTIFICATION_TYPE', object()) # doctest:+ELLIPSIS
+    NOTIFICATION_TYPE ...
+        
+    """
+    def __init__(self):
+        super(NotificationCenter, self).__init__()
+        self._init_observers()
+    
+    
+    def _init_observers(self):
+        """Initialize observer storage"""
+        
+        self.registered_types = set() #set of types that are observed
+        self.registered_senders = set() #set of senders that are observed
+        self.observers = {} #map (type,sender) => callback (callable)
+    
+    
+    def post_notification(self, theType, sender, **kwargs):
+        """Post notification (type,sender,**kwargs) to all registered
+        observers. 
+        
+        Implementation
+        --------------
+        * If no registered observers, performance is O(1).
+        * Notificaiton order is undefined.
+        * Notifications are posted synchronously.
+        """
+        
+        if(theType==None or sender==None):
+            raise Exception("NotificationCenter.post_notification requires \
+                type and sender.")
+        
+        # If there are no registered observers for the type/sender pair
+        if((theType not in self.registered_types and 
+                None not in self.registered_types) or
+            (sender not in self.registered_senders and 
+                None not in self.registered_senders)):
+            return
+        
+        for o in self._observers_for_notification(theType, sender):
+            o(theType, sender, args=kwargs)
+    
+        
+    def _observers_for_notification(self, theType, sender):
+        """Find all registered observers that should recieve notification"""
+        
+        keys = (
+                    (theType,sender),
+                    (theType, None),
+                    (None, sender),  
+                    (None,None)
+                )
+        
+        
+        obs = set()
+        for k in keys:
+            obs.update(self.observers.get(k, set()))
+        
+        return obs
+    
+    
+    def add_observer(self, callback, theType, sender):
+        """Add an observer callback to this notification center.
+        
+        The given callback will be called upon posting of notifications of
+        the given type/sender and will receive any additional kwargs passed
+        to post_notification.
+        
+        Parameters
+        ----------
+        observerCallback : callable
+            Callable. Must take at least two arguments::
+                observerCallback(type, sender, args={})
+        
+        theType : hashable
+            The notification type. If None, all notifications from sender
+            will be posted.
+        
+        sender : hashable
+            The notification sender. If None, all notifications of theType
+            will be posted.
+        """
+        assert(callback != None)
+        self.registered_types.add(theType)
+        self.registered_senders.add(sender)
+        self.observers.setdefault((theType,sender), set()).add(callback)
+    
+    def remove_all_observers(self):
+        """Removes all observers from this notification center"""
+        
+        self._init_observers()
+    
+
+
+sharedCenter = NotificationCenter()
\ No newline at end of file
diff --git a/IPython/kernel/core/tests/test_notification.py b/IPython/kernel/core/tests/test_notification.py
new file mode 100644
index 0000000..07d9286
--- /dev/null
+++ b/IPython/kernel/core/tests/test_notification.py
@@ -0,0 +1,171 @@
+# encoding: utf-8
+
+"""This file contains unittests for the notification.py module."""
+
+__docformat__ = "restructuredtext en"
+
+#-----------------------------------------------------------------------------
+#  Copyright (C) 2008  The IPython Development Team                           
+#                                                                             
+#  Distributed under the terms of the BSD License.  The full license is in    
+#  the file COPYING, distributed as part of this software.                    
+#-----------------------------------------------------------------------------
+                                                                              
+#-----------------------------------------------------------------------------
+# Imports                                                                     
+#-----------------------------------------------------------------------------
+
+import unittest
+import IPython.kernel.core.notification as notification
+from nose.tools import timed
+
+#
+# Supporting test classes
+#
+
+class Observer(object):
+    """docstring for Observer"""
+    def __init__(self, expectedType, expectedSender, 
+                    center=notification.sharedCenter, **kwargs):
+        super(Observer, self).__init__()
+        self.expectedType = expectedType
+        self.expectedSender = expectedSender
+        self.expectedKwArgs = kwargs
+        self.recieved = False
+        center.add_observer(self.callback, 
+                            self.expectedType, 
+                            self.expectedSender)
+    
+    
+    def callback(self, theType, sender, args={}):
+        """callback"""
+        
+        assert(theType == self.expectedType or
+                self.expectedType == None)
+        assert(sender == self.expectedSender or
+                self.expectedSender == None)
+        assert(args == self.expectedKwArgs)
+        self.recieved = True
+    
+    
+    def verify(self):
+        """verify"""
+        
+        assert(self.recieved)
+    
+    def reset(self):
+        """reset"""
+        
+        self.recieved = False
+    
+
+
+class Notifier(object):
+    """docstring for Notifier"""
+    def __init__(self, theType, **kwargs):
+        super(Notifier, self).__init__()
+        self.theType = theType
+        self.kwargs = kwargs
+    
+    def post(self, center=notification.sharedCenter):
+        """fire"""
+        
+        center.post_notification(self.theType, self,
+            **self.kwargs)
+    
+
+#
+# Test Cases
+#
+
+class NotificationTests(unittest.TestCase):
+    """docstring for NotificationTests"""
+    
+    def tearDown(self):
+        notification.sharedCenter.remove_all_observers()
+    
+    def test_notification_delivered(self):
+        """Test that notifications are delivered"""
+        expectedType = 'EXPECTED_TYPE'
+        sender = Notifier(expectedType)
+        observer = Observer(expectedType, sender)
+        
+        sender.post()
+        
+        observer.verify()
+    
+    
+    def test_type_specificity(self):
+        """Test that observers are registered by type"""
+        
+        expectedType = 1
+        unexpectedType = "UNEXPECTED_TYPE"
+        sender = Notifier(expectedType)
+        unexpectedSender = Notifier(unexpectedType)
+        observer = Observer(expectedType, sender)
+    
+        sender.post()
+        unexpectedSender.post()
+    
+        observer.verify()
+    
+    
+    def test_sender_specificity(self):
+        """Test that observers are registered by sender"""
+        
+        expectedType = "EXPECTED_TYPE"
+        sender1 = Notifier(expectedType)
+        sender2 = Notifier(expectedType)
+        observer = Observer(expectedType, sender1)
+        
+        sender1.post()
+        sender2.post()
+        
+        observer.verify()
+    
+    
+    def test_remove_all_observers(self):
+        """White-box test for remove_all_observers"""
+        
+        for i in xrange(10):
+            Observer('TYPE', None, center=notification.sharedCenter)
+        
+        self.assert_(len(notification.sharedCenter.observers[('TYPE',None)]) >= 10, 
+            "observers registered")
+        
+        notification.sharedCenter.remove_all_observers()
+        
+        self.assert_(len(notification.sharedCenter.observers) == 0, "observers removed")
+    
+    
+    def test_any_sender(self):
+        """test_any_sender"""
+        
+        expectedType = "EXPECTED_TYPE"
+        sender1 = Notifier(expectedType)
+        sender2 = Notifier(expectedType)
+        observer = Observer(expectedType, None)
+        
+        
+        sender1.post()
+        observer.verify()
+        
+        observer.reset()
+        sender2.post()
+        observer.verify()
+        
+    
+    @timed(.01)
+    def test_post_performance(self):
+        """Test that post_notification, even with many registered irrelevant
+        observers is fast"""
+        
+        for i in xrange(10):
+            Observer("UNRELATED_TYPE", None)
+        
+        o = Observer('EXPECTED_TYPE', None)
+        
+        notification.sharedCenter.post_notification('EXPECTED_TYPE', self)
+        
+        o.verify()
+    
diff --git a/IPython/kernel/engineservice.py b/IPython/kernel/engineservice.py
index c8ec1fc..26577f2 100644
--- a/IPython/kernel/engineservice.py
+++ b/IPython/kernel/engineservice.py
@@ -226,29 +226,31 @@ class IEngineThreaded(zi.Interface):
 class StrictDict(dict):
     """This is a strict copying dictionary for use as the interface to the 
     properties of an Engine.
+
     :IMPORTANT:
         This object copies the values you set to it, and returns copies to you
         when you request them.  The only way to change properties os explicitly
         through the setitem and getitem of the dictionary interface.
-        Example:
-        >>> e = kernel.get_engine(id)
-        >>> L = someList
+
+    Example:
+        >>> e = get_engine(id)
+        >>> L = [1,2,3]
         >>> e.properties['L'] = L
         >>> L == e.properties['L']
-        ... True
-        >>> L.append(something Else)
+        True
+        >>> L.append(99)
         >>> L == e.properties['L']
-        ... False
+        False
+        
+        Note that getitem copies, so calls to methods of objects do not affect
+        the properties, as seen here:
         
-        getitem copies, so calls to methods of objects do not affect the
-        properties, as in the following example:
         >>> e.properties[1] = range(2)
         >>> print e.properties[1]
-        ... [0, 1]
+        [0, 1]
         >>> e.properties[1].append(2)
         >>> print e.properties[1]
-        ... [0, 1]
-        
+        [0, 1]
     """
     def __init__(self, *args, **kwargs):
         dict.__init__(self, *args, **kwargs)
@@ -395,6 +397,7 @@ class EngineService(object, service.Service):
             
         return d
     
+    
     # The IEngine methods.  See the interface for documentation.
     
     def execute(self, lines):
@@ -862,6 +865,30 @@ class ThreadedEngineService(EngineService):
     def __init__(self, shellClass=Interpreter, mpi=None):
         EngineService.__init__(self, shellClass, mpi)
     
+    def wrapped_execute(self, msg, lines):
+        """Wrap self.shell.execute to add extra information to tracebacks"""
+        
+        try:
+            result = self.shell.execute(lines)
+        except Exception,e:
+            # This gives the following:
+            # et=exception class
+            # ev=exception class instance
+            # tb=traceback object
+            et,ev,tb = sys.exc_info()
+            # This call adds attributes to the exception value
+            et,ev,tb = self.shell.formatTraceback(et,ev,tb,msg)
+            # Add another attribute
+            
+            # Create a new exception with the new attributes
+            e = et(ev._ipython_traceback_text)
+            e._ipython_engine_info = msg
+            
+            # Re-raise
+            raise e
+        
+        return result
+    
     
     def execute(self, lines):
         # Only import this if we are going to use this class
@@ -871,6 +898,6 @@ class ThreadedEngineService(EngineService):
                'method':'execute',
                'args':[lines]}
         
-        d = threads.deferToThread(self.shell.execute, lines)
+        d = threads.deferToThread(self.wrapped_execute, msg, lines)
         d.addCallback(self.addIDToResult)
         return d
diff --git a/IPython/kernel/task.py b/IPython/kernel/task.py
index 9b6f0ae..5841a0f 100644
--- a/IPython/kernel/task.py
+++ b/IPython/kernel/task.py
@@ -416,11 +416,11 @@ class ResultNS(object):
     
     >>> ns = ResultNS({'a':17,'foo':range(3)})
     >>> print ns
-        NS{'a':17,'foo':range(3)}
+    NS{'a': 17, 'foo': [0, 1, 2]}
     >>> ns.a
-        17
+    17
     >>> ns['foo']
-        [0,1,2]
+    [0, 1, 2]
     """
     def __init__(self, dikt):
         for k,v in dikt.iteritems():
diff --git a/IPython/kernel/tests/test_contexts.py b/IPython/kernel/tests/test_contexts.py
new file mode 100644
index 0000000..22590d0
--- /dev/null
+++ b/IPython/kernel/tests/test_contexts.py
@@ -0,0 +1,41 @@
+from __future__ import with_statement
+
+#def test_simple():
+if 0:
+
+    # XXX - for now, we need a running cluster to be started separately.  The
+    # daemon work is almost finished, and will make much of this unnecessary.
+    from IPython.kernel import client
+    mec = client.MultiEngineClient(('127.0.0.1',10105))
+
+    try:
+        mec.get_ids()
+    except ConnectionRefusedError:
+        import os, time
+        os.system('ipcluster -n 2 &')
+        time.sleep(2)
+        mec = client.MultiEngineClient(('127.0.0.1',10105))
+
+    mec.block = False
+
+    import itertools
+    c = itertools.count()
+
+    parallel = RemoteMultiEngine(mec)
+
+    mec.pushAll()
+
+    with parallel as pr:
+        # A comment
+        remote()  # this means the code below only runs remotely
+        print 'Hello remote world'
+        x = range(10)
+        # Comments are OK
+        # Even misindented.
+        y = x+1
+
+
+    with pfor('i',sequence) as pr:
+        print x[i]
+
+    print pr.x + pr.y
diff --git a/IPython/strdispatch.py b/IPython/strdispatch.py
old mode 100755
new mode 100644
index 8516528..55e2eab
--- a/IPython/strdispatch.py
+++ b/IPython/strdispatch.py
@@ -1,13 +1,32 @@
+"""String dispatch class to match regexps and dispatch commands.
+"""
+
+# Stdlib imports
+import re
+
+# Our own modules
 from IPython.hooks import CommandChainDispatcher
 import IPython.hooks
 
-import re
 
+# Code begins
 class StrDispatch(object):
-    """ Dispatch (lookup) a set of strings / regexps for match """
+    """Dispatch (lookup) a set of strings / regexps for match.
+
+    Example:
+
+    >>> dis = StrDispatch()
+    >>> dis.add_s('hei',34, priority = 4)
+    >>> dis.add_s('hei',123, priority = 2)
+    >>> dis.add_re('h.i', 686)
+    >>> print list(dis.flat_matches('hei'))
+    [123, 34, 686]
+    """
+    
     def __init__(self):
         self.strs = {}
         self.regexs = {}
+
     def add_s(self, s, obj, priority= 0 ):
         """ Adds a target 'string' for dispatching """
         
@@ -31,9 +50,8 @@ class StrDispatch(object):
             if re.match(r, key):
                 yield obj
             else: 
-                #print "nomatch",key
+                #print "nomatch",key  # dbg
                 pass
-            
 
     def __repr__(self):
         return "<Strdispatch %s, %s>" % (self.strs, self.regexs)
@@ -44,22 +62,9 @@ class StrDispatch(object):
         for el in self.strs[key]:
             yield el[1]
         
-        
     def flat_matches(self, key):
         """ Yield all 'value' targets, without priority """
         for val in self.dispatch(key):
             for el in val:
                 yield el[1] # only value, no priority
         return
-         
-
-def test():
-    d = StrDispatch()
-    d.add_s('hei',34, priority = 4)
-    d.add_s('hei',123, priority = 2)
-    print  list(d.dispatch('hei'))
-    d.add_re('h.i', 686)
-    print list(d.flat_matches('hei'))
-
-if __name__ == '__main__':
-    test()    
\ No newline at end of file
diff --git a/IPython/testing/decorator_msim.py b/IPython/testing/decorator_msim.py
new file mode 100644
index 0000000..8915cf0
--- /dev/null
+++ b/IPython/testing/decorator_msim.py
@@ -0,0 +1,146 @@
+## The basic trick is to generate the source code for the decorated function
+## with the right signature and to evaluate it.
+## Uncomment the statement 'print >> sys.stderr, func_src'  in _decorate
+## to understand what is going on.
+
+__all__ = ["decorator", "update_wrapper", "getinfo"]
+
+import inspect, sys
+    
+def getinfo(func):
+    """
+    Returns an info dictionary containing:
+    - name (the name of the function : str)
+    - argnames (the names of the arguments : list)
+    - defaults (the values of the default arguments : tuple)
+    - signature (the signature : str)
+    - doc (the docstring : str)
+    - module (the module name : str)
+    - dict (the function __dict__ : str)
+    
+    >>> def f(self, x=1, y=2, *args, **kw): pass
+
+    >>> info = getinfo(f)
+
+    >>> info["name"]
+    'f'
+    >>> info["argnames"]
+    ['self', 'x', 'y', 'args', 'kw']
+    
+    >>> info["defaults"]
+    (1, 2)
+
+    >>> info["signature"]
+    'self, x, y, *args, **kw'
+    """
+    assert inspect.ismethod(func) or inspect.isfunction(func)
+    regargs, varargs, varkwargs, defaults = inspect.getargspec(func)
+    argnames = list(regargs)
+    if varargs:
+        argnames.append(varargs)
+    if varkwargs:
+        argnames.append(varkwargs)
+    signature = inspect.formatargspec(regargs, varargs, varkwargs, defaults,
+                                      formatvalue=lambda value: "")[1:-1]
+    return dict(name=func.__name__, argnames=argnames, signature=signature,
+                defaults = func.func_defaults, doc=func.__doc__,
+                module=func.__module__, dict=func.__dict__,
+                globals=func.func_globals, closure=func.func_closure)
+
+def update_wrapper(wrapper, wrapped, create=False):
+    """
+    An improvement over functools.update_wrapper. By default it works the
+    same, but if the 'create' flag is set, generates a copy of the wrapper
+    with the right signature and update the copy, not the original.
+    Moreovoer, 'wrapped' can be a dictionary with keys 'name', 'doc', 'module',
+    'dict', 'defaults'.
+    """
+    if isinstance(wrapped, dict):
+        infodict = wrapped
+    else: # assume wrapped is a function
+        infodict = getinfo(wrapped)
+    assert not '_wrapper_' in infodict["argnames"], \
+           '"_wrapper_" is a reserved argument name!'
+    if create: # create a brand new wrapper with the right signature
+        src = "lambda %(signature)s: _wrapper_(%(signature)s)" % infodict
+        # import sys; print >> sys.stderr, src # for debugging purposes
+        wrapper = eval(src, dict(_wrapper_=wrapper))        
+    try:
+        wrapper.__name__ = infodict['name']
+    except: # Python version < 2.4
+        pass
+    wrapper.__doc__ = infodict['doc']
+    wrapper.__module__ = infodict['module']
+    wrapper.__dict__.update(infodict['dict'])
+    wrapper.func_defaults = infodict['defaults']
+    return wrapper
+
+# the real meat is here
+def _decorator(caller, func):
+    infodict = getinfo(func)
+    argnames = infodict['argnames']
+    assert not ('_call_' in argnames or '_func_' in argnames), \
+           'You cannot use _call_ or _func_ as argument names!'
+    src = "lambda %(signature)s: _call_(_func_, %(signature)s)" % infodict
+    dec_func = eval(src, dict(_func_=func, _call_=caller))
+    return update_wrapper(dec_func, func)
+
+def decorator(caller, func=None):
+    """
+    General purpose decorator factory: takes a caller function as
+    input and returns a decorator with the same attributes.
+    A caller function is any function like this::
+
+     def caller(func, *args, **kw):
+         # do something
+         return func(*args, **kw)
+    
+    Here is an example of usage:
+
+    >>> @decorator
+    ... def chatty(f, *args, **kw):
+    ...     print "Calling %r" % f.__name__
+    ...     return f(*args, **kw)
+
+    >>> chatty.__name__
+    'chatty'
+    
+    >>> @chatty
+    ... def f(): pass
+    ...
+    >>> f()
+    Calling 'f'
+
+    For sake of convenience, the decorator factory can also be called with
+    two arguments. In this casem ``decorator(caller, func)`` is just a
+    shortcut for ``decorator(caller)(func)``.
+    """
+    if func is None: # return a decorator function
+        return update_wrapper(lambda f : _decorator(caller, f), caller)
+    else: # return a decorated function
+        return _decorator(caller, func)
+
+if __name__ == "__main__":
+    import doctest; doctest.testmod()
+
+#######################     LEGALESE    ##################################
+      
+##   Redistributions of source code must retain the above copyright 
+##   notice, this list of conditions and the following disclaimer.
+##   Redistributions in bytecode form must reproduce the above copyright
+##   notice, this list of conditions and the following disclaimer in
+##   the documentation and/or other materials provided with the
+##   distribution. 
+
+##   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+##   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+##   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+##   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+##   HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+##   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+##   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+##   OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+##   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+##   TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+##   USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+##   DAMAGE.
diff --git a/IPython/testing/decorators.py b/IPython/testing/decorators.py
new file mode 100644
index 0000000..c9f8832
--- /dev/null
+++ b/IPython/testing/decorators.py
@@ -0,0 +1,133 @@
+"""Decorators for labeling test objects.
+
+Decorators that merely return a modified version of the original
+function object are straightforward.  Decorators that return a new
+function object need to use
+nose.tools.make_decorator(original_function)(decorator) in returning
+the decorator, in order to preserve metadata such as function name,
+setup and teardown functions and so on - see nose.tools for more
+information.
+
+NOTE: This file contains IPython-specific decorators and imports the
+numpy.testing.decorators file, which we've copied verbatim.  Any of our own
+code will be added at the bottom if we end up extending this.
+"""
+
+# Stdlib imports
+import inspect
+
+# Third-party imports
+
+# This is Michele Simionato's decorator module, also kept verbatim.
+from decorator_msim import decorator, update_wrapper
+
+# Grab the numpy-specific decorators which we keep in a file that we
+# occasionally update from upstream: decorators_numpy.py is an IDENTICAL copy
+# of numpy.testing.decorators.
+from decorators_numpy import *
+
+##############################################################################
+# Local code begins
+
+# Utility functions
+
+def apply_wrapper(wrapper,func):
+    """Apply a wrapper to a function for decoration.
+
+    This mixes Michele Simionato's decorator tool with nose's make_decorator,
+    to apply a wrapper in a decorator so that all nose attributes, as well as
+    function signature and other properties, survive the decoration cleanly.
+    This will ensure that wrapped functions can still be well introspected via
+    IPython, for example.
+    """
+    import nose.tools
+
+    return decorator(wrapper,nose.tools.make_decorator(func)(wrapper))
+
+
+def make_label_dec(label,ds=None):
+    """Factory function to create a decorator that applies one or more labels.
+
+    :Parameters:
+      label : string or sequence
+      One or more labels that will be applied by the decorator to the functions
+    it decorates.  Labels are attributes of the decorated function with their
+    value set to True.
+
+    :Keywords:
+      ds : string
+      An optional docstring for the resulting decorator.  If not given, a
+      default docstring is auto-generated.
+
+    :Returns:
+      A decorator.
+
+    :Examples:
+
+    A simple labeling decorator:
+    >>> slow = make_label_dec('slow')
+    >>> print slow.__doc__
+    Labels a test as 'slow'.
+
+    And one that uses multiple labels and a custom docstring:
+    >>> rare = make_label_dec(['slow','hard'],
+    ... "Mix labels 'slow' and 'hard' for rare tests.")
+    >>> print rare.__doc__
+    Mix labels 'slow' and 'hard' for rare tests.
+
+    Now, let's test using this one:
+    >>> @rare
+    ... def f(): pass
+    ...
+    >>>
+    >>> f.slow
+    True
+    >>> f.hard
+    True
+    """
+
+    if isinstance(label,basestring):
+        labels = [label]
+    else:
+        labels = label
+        
+    # Validate that the given label(s) are OK for use in setattr() by doing a
+    # dry run on a dummy function.
+    tmp = lambda : None
+    for label in labels:
+        setattr(tmp,label,True)
+
+    # This is the actual decorator we'll return
+    def decor(f):
+        for label in labels:
+            setattr(f,label,True)
+        return f
+    
+    # Apply the user's docstring, or autogenerate a basic one
+    if ds is None:
+        ds = "Labels a test as %r." % label
+    decor.__doc__ = ds
+    
+    return decor
+
+#-----------------------------------------------------------------------------
+# Decorators for public use
+
+skip_doctest = make_label_dec('skip_doctest',
+    """Decorator - mark a function or method for skipping its doctest.
+
+    This decorator allows you to mark a function whose docstring you wish to
+    omit from testing, while preserving the docstring for introspection, help,
+    etc.""")                              
+
+
+def skip(func):
+    """Decorator - mark a test function for skipping from test suite."""
+
+    import nose
+    
+    def wrapper(*a,**k):
+        raise nose.SkipTest("Skipping test for function: %s" %
+                            func.__name__)
+    
+    return apply_wrapper(wrapper,func)
diff --git a/IPython/testing/decorators_numpy.py b/IPython/testing/decorators_numpy.py
new file mode 100644
index 0000000..dd9783e
--- /dev/null
+++ b/IPython/testing/decorators_numpy.py
@@ -0,0 +1,94 @@
+"""Decorators for labeling test objects
+
+Decorators that merely return a modified version of the original
+function object are straightforward.  Decorators that return a new
+function object need to use
+nose.tools.make_decorator(original_function)(decorator) in returning
+the decorator, in order to preserve metadata such as function name,
+setup and teardown functions and so on - see nose.tools for more
+information.
+
+"""
+
+def slow(t):
+    """Labels a test as 'slow'.
+
+    The exact definition of a slow test is obviously both subjective and
+    hardware-dependent, but in general any individual test that requires more
+    than a second or two should be labeled as slow (the whole suite consits of
+    thousands of tests, so even a second is significant)."""
+
+    t.slow = True
+    return t
+
+def setastest(tf=True):
+    ''' Signals to nose that this function is or is not a test
+
+    Parameters
+    ----------
+    tf : bool
+        If True specifies this is a test, not a test otherwise
+
+    e.g
+    >>> from numpy.testing.decorators import setastest
+    >>> @setastest(False)
+    ... def func_with_test_in_name(arg1, arg2): pass
+    ...
+    >>>
+
+    This decorator cannot use the nose namespace, because it can be
+    called from a non-test module. See also istest and nottest in
+    nose.tools
+
+    '''
+    def set_test(t):
+        t.__test__ = tf
+        return t
+    return set_test
+
+def skipif(skip_condition, msg=None):
+    ''' Make function raise SkipTest exception if skip_condition is true
+
+    Parameters
+    ---------
+    skip_condition : bool
+        Flag to determine whether to skip test (True) or not (False)
+    msg : string
+        Message to give on raising a SkipTest exception
+
+   Returns
+   -------
+   decorator : function
+       Decorator, which, when applied to a function, causes SkipTest
+       to be raised when the skip_condition was True, and the function
+       to be called normally otherwise.
+
+    Notes
+    -----
+    You will see from the code that we had to further decorate the
+    decorator with the nose.tools.make_decorator function in order to
+    transmit function name, and various other metadata.
+    '''
+    if msg is None:
+        msg = 'Test skipped due to test condition'
+    def skip_decorator(f):
+        # Local import to avoid a hard nose dependency and only incur the 
+        # import time overhead at actual test-time. 
+        import nose
+        def skipper(*args, **kwargs):
+            if skip_condition:
+                raise nose.SkipTest, msg
+            else:
+                return f(*args, **kwargs)
+        return nose.tools.make_decorator(f)(skipper)
+    return skip_decorator
+
+def skipknownfailure(f):
+    ''' Decorator to raise SkipTest for test known to fail
+    '''
+    # Local import to avoid a hard nose dependency and only incur the 
+    # import time overhead at actual test-time. 
+    import nose
+    def skipper(*args, **kwargs):
+        raise nose.SkipTest, 'This test is known to fail'
+    return nose.tools.make_decorator(f)(skipper)
diff --git a/IPython/testing/plugin/Makefile b/IPython/testing/plugin/Makefile
index 62417a6..d895af8 100644
--- a/IPython/testing/plugin/Makefile
+++ b/IPython/testing/plugin/Makefile
@@ -2,17 +2,51 @@
 PREFIX=~/usr/local
 PREFIX=~/tmp/local
 
+NOSE0=nosetests -vs --with-doctest --doctest-tests
+NOSE=nosetests -vvs --with-ipdoctest --doctest-tests --doctest-extension=txt
+
+#--with-color 
+
+SRC=ipdoctest.py setup.py ../decorators.py
+
 plugin: IPython_doctest_plugin.egg-info
 
+dtest: plugin dtexample.py
+	$(NOSE) dtexample.py
+
+# Note: this test is double counting!!!
+rtest: plugin dtexample.py
+	$(NOSE) test_refs.py
+
+std: plugin
+	nosetests -vs --with-doctest --doctest-tests IPython.strdispatch
+	$(NOSE) IPython.strdispatch
+
 test: plugin dtexample.py
-	nosetests -s --with-ipdoctest --doctest-tests --doctest-extension=txt \
-	dtexample.py test*.txt
+	$(NOSE) dtexample.py test*.py test*.txt
 
 deb: plugin dtexample.py
-	nosetests -vs --with-ipdoctest --doctest-tests --doctest-extension=txt \
-        test_combo.txt
+	$(NOSE) test_combo.txt
+
+iptest: plugin
+	$(NOSE) IPython
+
+deco:
+	$(NOSE0) IPython.testing.decorators
+
+mtest: plugin
+	$(NOSE) -x IPython.Magic
+
+ipipe: plugin
+	$(NOSE) -x IPython.Extensions.ipipe
+
+sr: rtest std
+
+base: dtest rtest test std deco
+
+all: base iptest
 
-IPython_doctest_plugin.egg-info: ipdoctest.py setup.py
+IPython_doctest_plugin.egg-info: $(SRC)
 	python setup.py install --prefix=$(PREFIX)
 	touch $@
 
diff --git a/IPython/testing/plugin/dtexample.py b/IPython/testing/plugin/dtexample.py
index d4b6d01..dea37eb 100644
--- a/IPython/testing/plugin/dtexample.py
+++ b/IPython/testing/plugin/dtexample.py
@@ -21,9 +21,9 @@ def pyfunc():
     ...
     0 1 1 2 2 3
     """
-
     return 'pyfunc'
 
+
 def ipfunc():
     """Some ipython tests...
 
@@ -67,6 +67,93 @@ def ipfunc():
     In [9]: ipfunc()
     Out[9]: 'ipfunc'
     """
-
     return 'ipfunc'
 
+
+def ranfunc():
+    """A function with some random output.
+
+       Normal examples are verified as usual:
+       >>> 1+3
+       4
+
+       But if you put '# random' in the output, it is ignored:
+       >>> 1+3
+       junk goes here...  # random
+
+       >>> 1+2
+       again,  anything goes #random
+       if multiline, the random mark is only needed once.
+
+       >>> 1+2
+       You can also put the random marker at the end:
+       # random
+
+       >>> 1+2
+       # random
+       .. or at the beginning.
+
+       More correct input is properly verified:
+       >>> ranfunc()
+       'ranfunc'
+    """
+    return 'ranfunc'
+
+
+def random_all():
+    """A function where we ignore the output of ALL examples.
+
+    Examples:
+
+      # all-random
+
+      This mark tells the testing machinery that all subsequent examples should
+      be treated as random (ignoring their output).  They are still executed,
+      so if a they raise an error, it will be detected as such, but their
+      output is completely ignored.
+
+      >>> 1+3
+      junk goes here...
+
+      >>> 1+3
+      klasdfj;
+
+      >>> 1+2
+      again,  anything goes
+      blah...
+    """
+    pass
+
+
+def iprand():
+    """Some ipython tests with random output.
+
+    In [7]: 3+4
+    Out[7]: 7
+
+    In [8]: print 'hello'
+    world  # random
+
+    In [9]: iprand()
+    Out[9]: 'iprand'
+    """
+    return 'iprand'
+
+
+def iprand_all():
+    """Some ipython tests with fully random output.
+
+    # all-random
+    
+    In [7]: 1
+    Out[7]: 99
+
+    In [8]: print 'hello'
+    world
+
+    In [9]: iprand_all()
+    Out[9]: 'junk'
+    """
+    return 'iprand_all'
+
+
diff --git a/IPython/testing/plugin/ipdoctest.py b/IPython/testing/plugin/ipdoctest.py
index e360415..40834e0 100644
--- a/IPython/testing/plugin/ipdoctest.py
+++ b/IPython/testing/plugin/ipdoctest.py
@@ -43,9 +43,19 @@ import logging
 import os
 import re
 import sys
+import traceback
 import unittest
 
 from inspect import getmodule
+from StringIO import StringIO
+
+# We are overriding the default doctest runner, so we need to import a few
+# things from doctest directly
+from doctest import (REPORTING_FLAGS, REPORT_ONLY_FIRST_FAILURE,
+                     _unittest_reportflags, DocTestRunner,
+                     _extract_future_flags, pdb, _OutputRedirectingPdb,
+                     _exception_traceback,
+                     linecache)
 
 # Third-party modules
 import nose.core
@@ -68,9 +78,27 @@ log = logging.getLogger(__name__)
 # machinery into a fit.  This code should be considered a gross hack, but it
 # gets the job done.
 
+
+# XXX - Hack to modify the %run command so we can sync the user's namespace
+# with the test globals.  Once we move over to a clean magic system, this will
+# be done with much less ugliness.
+
+def _run_ns_sync(self,arg_s,runner=None):
+    """Modified version of %run that syncs testing namespaces.
+
+    This is strictly needed for running doctests that call %run.
+    """
+
+    out = _ip.IP.magic_run_ori(arg_s,runner)
+    _run_ns_sync.test_globs.update(_ip.user_ns)
+    return out
+
+
 def start_ipython():
     """Start a global IPython shell, which we need for IPython-specific syntax.
     """
+    import new
+
     import IPython
 
     def xsys(cmd):
@@ -88,7 +116,7 @@ def start_ipython():
     _excepthook = sys.excepthook
     _main = sys.modules.get('__main__')
 
-    # Start IPython instance
+    # Start IPython instance.  We customize it to start with minimal frills.
     IPython.Shell.IPShell(['--classic','--noterm_title'])
 
     # Deactivate the various python system hooks added by ipython for
@@ -107,6 +135,11 @@ def start_ipython():
     # doctest machinery would miss them.
     _ip.system = xsys
 
+    # Also patch our %run function in.
+    im = new.instancemethod(_run_ns_sync,_ip.IP, _ip.IP.__class__)
+    _ip.IP.magic_run_ori = _ip.IP.magic_run
+    _ip.IP.magic_run = im
+
 # The start call MUST be made here.  I'm not sure yet why it doesn't work if
 # it is made later, at plugin initialization time, but in all my tests, that's
 # the case.
@@ -115,7 +148,26 @@ start_ipython()
 # *** END HACK ***
 ###########################################################################
 
-#-----------------------------------------------------------------------------
+# Classes and functions
+
+def is_extension_module(filename):
+    """Return whether the given filename is an extension module.
+
+    This simply checks that the extension is either .so or .pyd.
+    """
+    return os.path.splitext(filename)[1].lower() in ('.so','.pyd')
+
+
+class nodoc(object):
+    def __init__(self,obj):
+        self.obj = obj
+
+    def __getattribute__(self,key):
+        if key == '__doc__':
+            return None
+        else:
+            return getattr(object.__getattribute__(self,'obj'),key)
+
 # Modified version of the one in the stdlib, that fixes a python bug (doctests
 # not found in extension modules, http://bugs.python.org/issue3158)
 class DocTestFinder(doctest.DocTestFinder):
@@ -126,45 +178,38 @@ class DocTestFinder(doctest.DocTestFinder):
         module.
         """
         if module is None:
-            #print '_fm C1'  # dbg
             return True
         elif inspect.isfunction(object):
-            #print '_fm C2'  # dbg
             return module.__dict__ is object.func_globals
         elif inspect.isbuiltin(object):
-            #print '_fm C2-1'  # dbg
             return module.__name__ == object.__module__
         elif inspect.isclass(object):
-            #print '_fm C3'  # dbg
             return module.__name__ == object.__module__
         elif inspect.ismethod(object):
             # This one may be a bug in cython that fails to correctly set the
             # __module__ attribute of methods, but since the same error is easy
             # to make by extension code writers, having this safety in place
             # isn't such a bad idea
-            #print '_fm C3-1'  # dbg
             return module.__name__ == object.im_class.__module__
         elif inspect.getmodule(object) is not None:
-            #print '_fm C4'  # dbg
-            #print 'C4 mod',module,'obj',object # dbg
             return module is inspect.getmodule(object)
         elif hasattr(object, '__module__'):
-            #print '_fm C5'  # dbg
             return module.__name__ == object.__module__
         elif isinstance(object, property):
-            #print '_fm C6'  # dbg
             return True # [XX] no way not be sure.
         else:
             raise ValueError("object must be a class or function")
 
-
-
     def _find(self, tests, obj, name, module, source_lines, globs, seen):
         """
         Find tests for the given object and any contained objects, and
         add them to `tests`.
         """
 
+        if hasattr(obj,"skip_doctest"):
+            #print 'SKIPPING DOCTEST FOR:',obj  # dbg
+            obj = nodoc(obj)
+
         doctest.DocTestFinder._find(self,tests, obj, name, module,
                                     source_lines, globs, seen)
 
@@ -185,13 +230,10 @@ class DocTestFinder(doctest.DocTestFinder):
                     self._find(tests, val, valname1, module, source_lines,
                                globs, seen)
 
-
         # Look for tests in a class's contained objects.
         if inspect.isclass(obj) and self._recurse:
             #print 'RECURSE into class:',obj  # dbg
             for valname, val in obj.__dict__.items():
-                #valname1 = '%s.%s' % (name, valname)  # dbg
-                #print 'N',name,'VN:',valname,'val:',str(val)[:77] # dbg
                 # Special handling for staticmethod/classmethod.
                 if isinstance(val, staticmethod):
                     val = getattr(obj, valname)
@@ -208,6 +250,32 @@ class DocTestFinder(doctest.DocTestFinder):
                                globs, seen)
 
 
+class IPDoctestOutputChecker(doctest.OutputChecker):
+    """Second-chance checker with support for random tests.
+    
+    If the default comparison doesn't pass, this checker looks in the expected
+    output string for flags that tell us to ignore the output.
+    """
+
+    random_re = re.compile(r'#\s*random')
+    
+    def check_output(self, want, got, optionflags):
+        """Check output, accepting special markers embedded in the output.
+
+        If the output didn't pass the default validation but the special string
+        '#random' is included, we accept it."""
+
+        # Let the original tester verify first, in case people have valid tests
+        # that happen to have a comment saying '#random' embedded in.
+        ret = doctest.OutputChecker.check_output(self, want, got,
+                                                 optionflags)
+        if not ret and self.random_re.search(want):
+            #print >> sys.stderr, 'RANDOM OK:',want  # dbg
+            return True
+
+        return ret
+
+
 class DocTestCase(doctests.DocTestCase):
     """Proxy for DocTestCase: provides an address() method that
     returns the correct address for the doctest case. Otherwise
@@ -216,33 +284,70 @@ class DocTestCase(doctests.DocTestCase):
     for purposes of determining the test address, if it is provided.
     """
 
-    # doctests loaded via find(obj) omit the module name
-    # so we need to override id, __repr__ and shortDescription
-    # bonus: this will squash a 2.3 vs 2.4 incompatiblity
-    def id(self):
-        name = self._dt_test.name
-        filename = self._dt_test.filename
-        if filename is not None:
-            pk = getpackage(filename)
-            if pk is not None and not name.startswith(pk):
-                name = "%s.%s" % (pk, name)
-        return name
+    # Note: this method was taken from numpy's nosetester module.
+
+    # Subclass nose.plugins.doctests.DocTestCase to work around a bug in
+    # its constructor that blocks non-default arguments from being passed
+    # down into doctest.DocTestCase
+
+    def __init__(self, test, optionflags=0, setUp=None, tearDown=None,
+                 checker=None, obj=None, result_var='_'):
+        self._result_var = result_var
+        doctests.DocTestCase.__init__(self, test,
+                                      optionflags=optionflags,
+                                      setUp=setUp, tearDown=tearDown,
+                                      checker=checker)
+        # Now we must actually copy the original constructor from the stdlib
+        # doctest class, because we can't call it directly and a bug in nose
+        # means it never gets passed the right arguments.
+
+        self._dt_optionflags = optionflags
+        self._dt_checker = checker
+        self._dt_test = test
+        self._dt_setUp = setUp
+        self._dt_tearDown = tearDown
+
+        # Each doctest should remember what directory it was loaded from...
+        self._ori_dir = os.getcwd()
+
+    # Modified runTest from the default stdlib
+    def runTest(self):
+        test = self._dt_test
+        old = sys.stdout
+        new = StringIO()
+        optionflags = self._dt_optionflags
+
+        if not (optionflags & REPORTING_FLAGS):
+            # The option flags don't include any reporting flags,
+            # so add the default reporting flags
+            optionflags |= _unittest_reportflags
+
+        runner = IPDocTestRunner(optionflags=optionflags,
+                                 checker=self._dt_checker, verbose=False)
 
+        try:
+            # Save our current directory and switch out to the one where the
+            # test was originally created, in case another doctest did a
+            # directory change.  We'll restore this in the finally clause.
+            curdir = os.getcwd()
+            os.chdir(self._ori_dir)
+
+            runner.DIVIDER = "-"*70
+            failures, tries = runner.run(
+                test, out=new.write, clear_globs=False)
+        finally:
+            sys.stdout = old
+            os.chdir(curdir)
 
-# Classes and functions
-
-def is_extension_module(filename):
-    """Return whether the given filename is an extension module.
-
-    This simply checks that the extension is either .so or .pyd.
-    """
-    return os.path.splitext(filename)[1].lower() in ('.so','.pyd')
+        if failures:
+            raise self.failureException(self.format_failure(new.getvalue()))
 
 
 # A simple subclassing of the original with a different class name, so we can
 # distinguish and treat differently IPython examples from pure python ones.
 class IPExample(doctest.Example): pass
 
+
 class IPExternalExample(doctest.Example):
     """Doctest examples to be run in an external process."""
 
@@ -254,6 +359,7 @@ class IPExternalExample(doctest.Example):
         # An EXTRA newline is needed to prevent pexpect hangs
         self.source += '\n'
 
+
 class IPDocTestParser(doctest.DocTestParser):
     """
     A class used to parse strings containing doctest examples.
@@ -294,14 +400,22 @@ class IPDocTestParser(doctest.DocTestParser):
     _EXAMPLE_RE_IP = re.compile( _RE_TPL % (_PS1_IP,_PS2_IP,_PS1_IP,_PS2_IP),
                                  re.MULTILINE | re.VERBOSE)
 
+    # Mark a test as being fully random.  In this case, we simply append the
+    # random marker ('#random') to each individual example's output.  This way
+    # we don't need to modify any other code.
+    _RANDOM_TEST = re.compile(r'#\s*all-random')
+
+    # Mark tests to be executed in an external process - currently unsupported.
+    _EXTERNAL_IP = re.compile(r'#\s*ipdoctest:\s*EXTERNAL')
+    
     def ip2py(self,source):
         """Convert input IPython source into valid Python."""
         out = []
         newline = out.append
-        for line in source.splitlines():
-            #newline(_ip.IPipython.prefilter(line,True))
-            newline(_ip.IP.prefilter(line,True))
+        for lnum,line in enumerate(source.splitlines()):
+            newline(_ip.IP.prefilter(line,lnum>0))
         newline('')  # ensure a closing newline, needed by doctest
+        #print "PYSRC:", '\n'.join(out)  # dbg
         return '\n'.join(out)
 
     def parse(self, string, name='<string>'):
@@ -324,6 +438,11 @@ class IPDocTestParser(doctest.DocTestParser):
         output = []
         charno, lineno = 0, 0
 
+        if self._RANDOM_TEST.search(string):
+            random_marker = '\n# random'
+        else:
+            random_marker = ''
+
         # Whether to convert the input from ipython to python syntax
         ip2py = False
         # Find all doctest examples in the string.  First, try them as Python
@@ -341,7 +460,7 @@ class IPDocTestParser(doctest.DocTestParser):
             # IPExternalExamples are run out-of-process (via pexpect) so they
             # don't need any filtering (a real ipython will be executing them).
             terms = list(self._EXAMPLE_RE_IP.finditer(string))
-            if re.search(r'#\s*ipdoctest:\s*EXTERNAL',string):
+            if self._EXTERNAL_IP.search(string):
                 #print '-'*70  # dbg
                 #print 'IPExternalExample, Source:\n',string  # dbg
                 #print '-'*70  # dbg
@@ -361,12 +480,17 @@ class IPDocTestParser(doctest.DocTestParser):
             # Extract info from the regexp match.
             (source, options, want, exc_msg) = \
                      self._parse_example(m, name, lineno,ip2py)
+
+            # Append the random-output marker (it defaults to empty in most
+            # cases, it's only non-empty for 'all-random' tests):
+            want += random_marker
+                
             if Example is IPExternalExample:
                 options[doctest.NORMALIZE_WHITESPACE] = True
                 want += '\n'
+
             # Create an Example, and add it to the list.
             if not self._IS_BLANK_OR_COMMENT(source):
-                #print 'Example source:', source # dbg
                 output.append(Example(source, want, exc_msg,
                                       lineno=lineno,
                                       indent=min_indent+len(m.group('indent')),
@@ -377,7 +501,6 @@ class IPDocTestParser(doctest.DocTestParser):
             charno = m.end()
         # Add any remaining post-example text to `output`.
         output.append(string[charno:])
-
         return output
 
     def _parse_example(self, m, name, lineno,ip2py=False):
@@ -464,9 +587,33 @@ class IPDocTestParser(doctest.DocTestParser):
                                  (lineno+i+1, name,
                                   line[indent:space_idx], line))
 
+
 SKIP = doctest.register_optionflag('SKIP')
 
-###########################################################################
+
+class IPDocTestRunner(doctest.DocTestRunner,object):
+    """Test runner that synchronizes the IPython namespace with test globals.
+    """
+    
+    def run(self, test, compileflags=None, out=None, clear_globs=True):
+
+        # Hack: ipython needs access to the execution context of the example,
+        # so that it can propagate user variables loaded by %run into
+        # test.globs.  We put them here into our modified %run as a function
+        # attribute.  Our new %run will then only make the namespace update
+        # when called (rather than unconconditionally updating test.globs here
+        # for all examples, most of which won't be calling %run anyway).
+        _run_ns_sync.test_globs = test.globs
+
+        # dbg
+        ## print >> sys.stderr, "Test:",test
+        ## for ex in test.examples:
+        ##     print >> sys.stderr, ex.source
+        ##     print >> sys.stderr, 'Want:\n',ex.want,'\n--'
+
+        return super(IPDocTestRunner,self).run(test,
+                                               compileflags,out,clear_globs)
+
 
 class DocFileCase(doctest.DocFileCase):
     """Overrides to provide filename
@@ -490,7 +637,8 @@ class ExtensionDoctest(doctests.Doctest):
         self.extension = tolist(options.doctestExtension)
         self.finder = DocTestFinder()
         self.parser = doctest.DocTestParser()
-
+        self.globs = None
+        self.extraglobs = None
 
     def loadTestsFromExtensionModule(self,filename):
         bpath,mod = os.path.split(filename)
@@ -503,32 +651,62 @@ class ExtensionDoctest(doctests.Doctest):
             sys.path.pop()
         return tests
 
+    # NOTE: the method below is almost a copy of the original one in nose, with
+    # a  few modifications to control output checking.
+
+    def loadTestsFromModule(self, module):
+        #print 'lTM',module  # dbg
+
+        if not self.matches(module.__name__):
+            log.debug("Doctest doesn't want module %s", module)
+            return
+
+        tests = self.finder.find(module,globs=self.globs,
+                                 extraglobs=self.extraglobs)
+        if not tests:
+            return
+
+        tests.sort()
+        module_file = module.__file__
+        if module_file[-4:] in ('.pyc', '.pyo'):
+            module_file = module_file[:-1]
+        for test in tests:
+            if not test.examples:
+                continue
+            if not test.filename:
+                test.filename = module_file
+
+            # xxx - checker and options may be ok instantiated once outside loop
+            # always use whitespace and ellipsis options
+            optionflags = doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS
+            checker = IPDoctestOutputChecker()
+            
+            yield DocTestCase(test,
+                              optionflags=optionflags,
+                              checker=checker)
+
     def loadTestsFromFile(self, filename):
+        #print 'lTF',filename  # dbg
+
         if is_extension_module(filename):
             for t in self.loadTestsFromExtensionModule(filename):
                 yield t
         else:
-            ## for t in list(doctests.Doctest.loadTestsFromFile(self,filename)):
-            ##     yield t
-            pass
-
-        if self.extension and anyp(filename.endswith, self.extension):
-            #print 'lTF',filename  # dbg
-            name = os.path.basename(filename)
-            dh = open(filename)
-            try:
-                doc = dh.read()
-            finally:
-                dh.close()
-            test = self.parser.get_doctest(
-                doc, globs={'__file__': filename}, name=name,
-                filename=filename, lineno=0)
-            if test.examples:
-                #print 'FileCase:',test.examples  # dbg
-                yield DocFileCase(test)
-            else:
-                yield False # no tests to load
-
+            if self.extension and anyp(filename.endswith, self.extension):
+                name = os.path.basename(filename)
+                dh = open(filename)
+                try:
+                    doc = dh.read()
+                finally:
+                    dh.close()
+                test = self.parser.get_doctest(
+                    doc, globs={'__file__': filename}, name=name,
+                    filename=filename, lineno=0)
+                if test.examples:
+                    #print 'FileCase:',test.examples  # dbg
+                    yield DocFileCase(test)
+                else:
+                    yield False # no tests to load
 
     def wantFile(self,filename):
         """Return whether the given filename should be scanned for tests.
@@ -538,38 +716,25 @@ class ExtensionDoctest(doctests.Doctest):
         """
         #print 'Filename:',filename  # dbg
 
+        # temporarily hardcoded list, will move to driver later
+        exclude = ['IPython/external/',
+                   'IPython/Extensions/ipy_',
+                   'IPython/platutils_win32',
+                   'IPython/frontend/cocoa',
+                   'IPython_doctest_plugin',
+                   'IPython/Gnuplot',
+                   'IPython/Extensions/PhysicalQIn']
+
+        for fex in exclude:
+            if fex in filename:  # substring
+                #print '###>>> SKIP:',filename  # dbg
+                return False
+
         if is_extension_module(filename):
             return True
         else:
             return doctests.Doctest.wantFile(self,filename)
 
-    # NOTE: the method below is a *copy* of the one in the nose doctests
-    # plugin, but we have to replicate it here in order to have it resolve the
-    # DocTestCase (last line) to our local copy, since the nose plugin doesn't
-    # provide a public hook for what TestCase class to use.  The alternative
-    # would be to monkeypatch doctest in the stdlib, but that's ugly and
-    # brittle, since a change in plugin load order can break it.  So for now,
-    # we just paste this in here, inelegant as this may be.
-
-    def loadTestsFromModule(self, module):
-        #print 'lTM',module  # dbg
-
-        if not self.matches(module.__name__):
-            log.debug("Doctest doesn't want module %s", module)
-            return
-        tests = self.finder.find(module)
-        if not tests:
-            return
-        tests.sort()
-        module_file = module.__file__
-        if module_file[-4:] in ('.pyc', '.pyo'):
-            module_file = module_file[:-1]
-        for test in tests:
-            if not test.examples:
-                continue
-            if not test.filename:
-                test.filename = module_file
-            yield DocTestCase(test)
 
 class IPythonDoctest(ExtensionDoctest):
     """Nose Plugin that supports doctests in extension modules.
@@ -583,5 +748,6 @@ class IPythonDoctest(ExtensionDoctest):
         self.doctest_tests = options.doctest_tests
         self.extension = tolist(options.doctestExtension)
         self.parser = IPDocTestParser()
-        #self.finder = DocTestFinder(parser=IPDocTestParser())
         self.finder = DocTestFinder(parser=self.parser)
+        self.globs = None
+        self.extraglobs = None
diff --git a/IPython/testing/plugin/show_refs.py b/IPython/testing/plugin/show_refs.py
new file mode 100644
index 0000000..11a441f
--- /dev/null
+++ b/IPython/testing/plugin/show_refs.py
@@ -0,0 +1,17 @@
+"""Simple script to show reference holding behavior.
+
+This is used by a companion test case.
+"""
+
+import gc
+
+class C(object):
+  def __del__(self):
+      print 'deleting object...'
+
+c = C()
+
+c_refs = gc.get_referrers(c)
+ref_ids = map(id,c_refs)
+
+print 'c referrers:',map(type,c_refs)
diff --git a/IPython/testing/plugin/simplevars.py b/IPython/testing/plugin/simplevars.py
new file mode 100644
index 0000000..b9286c7
--- /dev/null
+++ b/IPython/testing/plugin/simplevars.py
@@ -0,0 +1,2 @@
+x = 1
+print 'x is:',x
diff --git a/IPython/testing/plugin/test_refs.py b/IPython/testing/plugin/test_refs.py
new file mode 100644
index 0000000..2c6e88b
--- /dev/null
+++ b/IPython/testing/plugin/test_refs.py
@@ -0,0 +1,180 @@
+# Module imports
+# Std lib
+import inspect
+
+# Third party
+
+# Our own
+from IPython.testing import decorators as dec
+
+#-----------------------------------------------------------------------------
+# Utilities
+
+# Note: copied from OInspect, kept here so the testing stuff doesn't create
+# circular dependencies and is easier to reuse.
+def getargspec(obj):
+    """Get the names and default values of a function's arguments.
+
+    A tuple of four things is returned: (args, varargs, varkw, defaults).
+    'args' is a list of the argument names (it may contain nested lists).
+    'varargs' and 'varkw' are the names of the * and ** arguments or None.
+    'defaults' is an n-tuple of the default values of the last n arguments.
+
+    Modified version of inspect.getargspec from the Python Standard
+    Library."""
+
+    if inspect.isfunction(obj):
+        func_obj = obj
+    elif inspect.ismethod(obj):
+        func_obj = obj.im_func
+    else:
+        raise TypeError, 'arg is not a Python function'
+    args, varargs, varkw = inspect.getargs(func_obj.func_code)
+    return args, varargs, varkw, func_obj.func_defaults
+
+#-----------------------------------------------------------------------------
+# Testing functions
+
+def test_trivial():
+    """A trivial passing test."""
+    pass
+
+
+@dec.skip
+def test_deliberately_broken():
+    """A deliberately broken test - we want to skip this one."""
+    1/0
+
+
+# Verify that we can correctly skip the doctest for a function at will, but
+# that the docstring itself is NOT destroyed by the decorator.
+@dec.skip_doctest
+def doctest_bad(x,y=1,**k):
+    """A function whose doctest we need to skip.
+
+    >>> 1+1
+    3
+    """
+    print 'x:',x
+    print 'y:',y
+    print 'k:',k
+
+
+def call_doctest_bad():
+    """Check that we can still call the decorated functions.
+    
+    >>> doctest_bad(3,y=4)
+    x: 3
+    y: 4
+    k: {}
+    """
+    pass
+
+
+# Doctest skipping should work for class methods too
+class foo(object):
+    """Foo
+
+    Example:
+
+    >>> 1+1
+    2
+    """
+
+    @dec.skip_doctest
+    def __init__(self,x):
+        """Make a foo.
+
+        Example:
+
+        >>> f = foo(3)
+        junk
+        """
+        print 'Making a foo.'
+        self.x = x
+        
+    @dec.skip_doctest
+    def bar(self,y):
+        """Example:
+
+        >>> f = foo(3)
+        >>> f.bar(0)
+        boom!
+        >>> 1/0
+        bam!
+        """
+        return 1/y
+
+    def baz(self,y):
+        """Example:
+
+        >>> f = foo(3)
+        Making a foo.
+        >>> f.baz(3)
+        True
+        """
+        return self.x==y
+
+
+def test_skip_dt_decorator():
+    """Doctest-skipping decorator should preserve the docstring.
+    """
+    # Careful: 'check' must be a *verbatim* copy of the doctest_bad docstring!
+    check = """A function whose doctest we need to skip.
+
+    >>> 1+1
+    3
+    """
+    # Fetch the docstring from doctest_bad after decoration.
+    val = doctest_bad.__doc__
+    
+    assert check==val,"doctest_bad docstrings don't match"
+
+
+def test_skip_dt_decorator2():
+    """Doctest-skipping decorator should preserve function signature.
+    """
+    # Hardcoded correct answer
+    dtargs = (['x', 'y'], None, 'k', (1,))
+    # Introspect out the value
+    dtargsr = getargspec(doctest_bad)
+    assert dtargsr==dtargs, \
+           "Incorrectly reconstructed args for doctest_bad: %s" % (dtargsr,)
+
+
+def doctest_run():
+    """Test running a trivial script.
+
+    In [13]: run simplevars.py
+    x is: 1
+    """
+    
+#@dec.skip_doctest
+def doctest_runvars():
+    """Test that variables defined in scripts get loaded correcly via %run.
+
+    In [13]: run simplevars.py
+    x is: 1
+
+    In [14]: x
+    Out[14]: 1
+    """
+
+def doctest_ivars():
+    """Test that variables defined interactively are picked up.
+    In [5]: zz=1
+
+    In [6]: zz
+    Out[6]: 1
+    """
+    
+@dec.skip_doctest
+def doctest_refs():
+    """DocTest reference holding issues when running scripts.
+
+    In [32]: run show_refs.py
+    c referrers: [<type 'dict'>]
+
+    In [33]: map(type,gc.get_referrers(c))
+    Out[33]: [<type 'dict'>]
+    """
diff --git a/docs/source/development/notification_blueprint.txt b/docs/source/development/notification_blueprint.txt
new file mode 100644
index 0000000..2d2e372
--- /dev/null
+++ b/docs/source/development/notification_blueprint.txt
@@ -0,0 +1,47 @@
+.. Notification:
+
+==========================================
+IPython.kernel.core.notification blueprint
+==========================================
+
+Overview
+========
+The :mod:`IPython.kernel.core.notification` module will provide a simple implementation of a notification center and support for the observer pattern within the :mod:`IPython.kernel.core`. The main intended use case is to provide notification of Interpreter events to an observing frontend during the execution of a single block of code.
+
+Functional Requirements
+=======================
+The notification center must:
+	* Provide synchronous notification of events to all registered observers.
+	* Provide typed or labeled notification types
+	* Allow observers to register callbacks for individual or all notification types
+	* Allow observers to register callbacks for events from individual or all notifying objects
+	* Notification to the observer consists of the notification type, notifying object and user-supplied extra information [implementation: as keyword parameters to the registered callback]
+	* Perform as O(1) in the case of no registered observers.
+	* Permit out-of-process or cross-network extension.
+	
+What's not included
+==============================================================
+As written, the :mod:`IPython.kernel.core.notificaiton` module does not:
+ 	* Provide out-of-process or network notifications [these should be handled by a separate, Twisted aware module in :mod:`IPython.kernel`].
+	* Provide zope.interface-style interfaces for the notification system [these should also be provided by the :mod:`IPython.kernel` module]
+	
+Use Cases
+=========
+The following use cases describe the main intended uses of the notificaiton module and illustrate the main success scenario for each use case:
+
+	1. Dwight Schroot is writing a frontend for the IPython project. His frontend is stuck in the stone age and must communicate synchronously with an IPython.kernel.core.Interpreter instance. Because code is executed in blocks by the Interpreter, Dwight's UI freezes every time he executes a long block of code. To keep track of the progress of his long running block, Dwight adds the following code to his frontend's set-up code::
+		from IPython.kernel.core.notification import NotificationCenter
+		center = NotificationCenter.sharedNotificationCenter
+		center.registerObserver(self, type=IPython.kernel.core.Interpreter.STDOUT_NOTIFICATION_TYPE, notifying_object=self.interpreter, callback=self.stdout_notification)
+	
+	and elsewhere in his front end::
+		def stdout_notification(self, type, notifying_object, out_string=None):
+			self.writeStdOut(out_string)
+	
+	If everything works, the Interpreter will (according to its published API) fire a notification via the :data:`IPython.kernel.core.notification.sharedCenter` of type :const:`STD_OUT_NOTIFICATION_TYPE` before writing anything to stdout [it's up to the Intereter implementation to figure out when to do this]. The notificaiton center will then call the registered callbacks for that event type (in this case, Dwight's frontend's stdout_notification method). Again, according to its API, the Interpreter provides an additional keyword argument when firing the notificaiton of out_string, a copy of the string it will write to stdout.
+
+	Like magic, Dwight's frontend is able to provide output, even during long-running calculations. Now if Jim could just convince Dwight to use Twisted...
+
+	2. Boss Hog is writing a frontend for the IPython project. Because Boss Hog is stuck in the stone age, his frontend will be written in a new Fortran-like dialect of python and will run only from the command line. Because he doesn't need any fancy notification system and is used to worrying about every cycle on his rat-wheel powered mini, Boss Hog is adamant that the new notification system not produce any performance penalty. As they say in Hazard county, there's no such thing as a free lunch. If he wanted zero overhead, he should have kept using IPython 0.8. Instead, those tricky Duke boys slide in a suped-up bridge-out jumpin' awkwardly confederate-lovin' notification module that imparts only a constant (and small) performance penalty when the Interpreter (or any other object) fires an event for which there are no registered observers. Of course, the same notificaiton-enabled Interpreter can then be used in frontends that require notifications, thus saving the IPython project from a nasty civil war.
+	
+	3. Barry is wrting a frontend for the IPython project. Because Barry's front end is the *new hotness*, it uses an asynchronous event model to communicate with a Twisted :mod:`~IPython.kernel.engineservice` that communicates with the IPython :class:`~IPython.kernel.core.interpreter.Interpreter`. Using the :mod:`IPython.kernel.notification` module, an asynchronous wrapper on the :mod:`IPython.kernel.core.notification` module, Barry's frontend can register for notifications from the interpreter that are delivered asynchronously. Even if Barry's frontend is running on a separate process or even host from the Interpreter, the notifications are delivered, as if by dark and twisted magic. Just like Dwight's frontend, Barry's frontend can now recieve notifications of e.g. writing to stdout/stderr, opening/closing an external file, an exception in the executing code, etc.
\ No newline at end of file
diff --git a/scripts/ipython b/scripts/ipython
index 66b221e..1f9744d 100755
--- a/scripts/ipython
+++ b/scripts/ipython
@@ -24,4 +24,5 @@ are trapped first by Python itself.
 """
 
 import IPython.Shell
+
 IPython.Shell.start().mainloop()