Close issue 41, remove obsolete gtk 1.x code, trap os.getcwd exceptions at

init time.

IPython/Shell.py

@@ -4,7 +4,7 b''
 All the matplotlib support code was co-developed with John Hunter,
 matplotlib's author.
 
-$Id: Shell.py 703 2005-08-16 17:34:44Z fperez $"""
+$Id: Shell.py 802 2005-09-06 03:49:12Z fperez $"""
 
 #*****************************************************************************
 #       Copyright (C) 2001-2004 Fernando Perez <[e-mail]>
@@ -561,9 +561,6 b' def hijack_gtk():'
     """Modifies pyGTK's mainloop with a dummy so user code does not
     block IPython.  This function returns the original `gtk.mainloop`
     function that has been hijacked.
-
-    NOTE: Make sure you import this *AFTER* you call
-    pygtk.require(...).
     """    
     def dummy_mainloop(*args, **kw):
         pass
@@ -592,8 +589,6 b' class IPShellGTK(threading.Thread):'
     def __init__(self,argv=None,user_ns=None,debug=1,
                  shell_class=MTInteractiveShell):
 
-        import pygtk
-        pygtk.require("2.0")
         import gtk
         
         self.gtk = gtk

IPython/iplib.py

@@ -6,7 +6,7 b' Requires Python 2.1 or newer.'
 
 This file contains all the classes and helper functions specific to IPython.
 
-$Id: iplib.py 774 2005-09-01 00:27:53Z fperez $
+$Id: iplib.py 802 2005-09-06 03:49:12Z fperez $
 """
 
 #*****************************************************************************
@@ -590,7 +590,10 b' class InteractiveShell(code.InteractiveConsole, Logger, Magic):'
         self.input_hist = InputList(['\n'])
 
         # list of visited directories
-        self.dir_hist = [os.getcwd()]
+        try:
+            self.dir_hist = [os.getcwd()]
+        except IOError, e:
+            self.dir_hist = []
 
         # dict of output history
         self.output_hist = {}
@@ -600,11 +603,14 b' class InteractiveShell(code.InteractiveConsole, Logger, Magic):'
         # number of positional arguments of the alias.
         self.alias_table = {}
 
-        # dict of things NOT to alias (keywords and builtins)
-        self.no_alias = {}
-        for key in keyword.kwlist:
-            self.no_alias[key] = 1
-        self.no_alias.update(__builtin__.__dict__)
+        # dict of things NOT to alias (keywords, builtins and some special magics)
+        no_alias = {}
+        no_alias_magics = ['cd','popd','pushd','dhist','alias','unalias']
+        for key in keyword.kwlist + no_alias_magics:
+            no_alias[key] = 1
+        no_alias.update(__builtin__.__dict__)
+        self.no_alias = no_alias
+        
         
         # make global variables for user access to these
         self.user_ns['_ih'] = self.input_hist
@@ -953,7 +959,7 b' class InteractiveShell(code.InteractiveConsole, Logger, Magic):'
         In particular, make sure no Python keywords/builtins are in it."""
 
         no_alias = self.no_alias
-        for k in self.alias_table.keys():
+        for k in self.alias_table:
             if k in no_alias:
                 del self.alias_table[k]
                 if verbose:

IPython/ipmaker.py

@@ -6,7 +6,7 b' Requires Python 2.1 or better.'
 
 This file contains the main make_IPython() starter function.
 
-$Id: ipmaker.py 638 2005-07-18 03:01:41Z fperez $"""
+$Id: ipmaker.py 802 2005-09-06 03:49:12Z fperez $"""
 
 #*****************************************************************************
 #       Copyright (C) 2001-2004 Fernando Perez. <[e-mail]>
@@ -194,9 +194,9 b" object? -> Details about 'object'. ?object also works, ?? prints more."
                       pdb = 0,
                       pprint = 0,
                       profile = '',
-                      prompt_in1 = 'In [\\#]:',
-                      prompt_in2 = '   .\\D.:',
-                      prompt_out = 'Out[\\#]:',
+                      prompt_in1 = 'In [\\#]: ',
+                      prompt_in2 = '   .\\D.: ',
+                      prompt_out = 'Out[\\#]: ',
                       prompts_pad_left = 1,
                       quick = 0,
                       readline = 1,

doc/ChangeLog

@@ -1,3 +1,16 b''
[phone]  Fernando Perez  <[e-mail]>
+
+	* IPython/Shell.py (hijack_gtk): remove pygtk.require("2.0")
+	calls.  These were a leftover from the GTK 1.x days, and can cause
+	problems in certain cases (after a report by John Hunter).
+
+	* IPython/iplib.py (InteractiveShell.__init__): Trap exception if
+	os.getcwd() fails at init time.  Thanks to patch from David Remahl
+	<chmod007 AT mac.com>.
+	(InteractiveShell.__init__): prevent certain special magics from
+	being shadowed by aliases.  Closes
+	http://www.scipy.net/roundup/ipython/issue41.
+
 2005-08-31  Fernando Perez  <[e-mail]>
 
 	* IPython/iplib.py (InteractiveShell.complete): Added new