Put .rc attribute in instance earlier, too many methods expect this to be

there and it could lead to weird runtime bugs (like the one fixed by the
previous commit).

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 924 2005-11-15 20:24:31Z fperez $"""
+$Id: ipmaker.py 925 2005-11-15 20:39:39Z fperez $"""
 
 #*****************************************************************************
 #       Copyright (C) 2001-2004 Fernando Perez. <[e-mail]>
@@ -445,11 +445,15 b" object? -> Details about 'object'. ?object also works, ?? prints more."
     #------------------------------------------------------------------------
     # Execute user config
 
-    # first, create a valid config structure with the right precedence order:
-    # defaults < rcfile < command line.  We make it as a local (IP_rc) to
-    # avoid a zillion attribute accesses.  Right before returning, this will
-    # be set as IP.rc.
-    IP_rc = rc_def.copy()
+    # Create a valid config structure with the right precedence order:
+    # defaults < rcfile < command line.  This needs to be in the instance, so
+    # that method calls below that rely on it find it.
+    IP.rc = rc_def.copy()
+
+    # Work with a local alias inside this routine to avoid unnecessary
+    # attribute lookups.
+    IP_rc = IP.rc
+    
     IP_rc.update(opts_def)
     if rcfiledata:
         # now we can update 
@@ -719,9 +723,6 b" object? -> Details about 'object'. ?object also works, ?? prints more."
     # Final banner is a string
     IP.BANNER = '\n'.join(BANN_P)
 
-    # Assign the IP_rc object as an attribute of IP
-    IP.rc = IP_rc
-
     # Finalize the IPython instance.  This assumes the rc structure is fully
     # in place.
     IP.post_config_initialization()