Minor changes to a few files to reflect design discussion.

IPython/config/loader.py

@@ -153,7 +153,7 b' NoDefault = NoDefault()'
 class ArgParseConfigLoader(CommandLineConfigLoader):
     
     # arguments = [(('-f','--file'),dict(type=str,dest='file'))]
-    arguments = []
+    arguments = ()
 
     def __init__(self, *args, **kw):
         """Create a config loader for use with argparse.

IPython/config/tests/test_loader.py

@@ -45,6 +45,7 b' class TestPyFileCL(TestCase):'
         f = os.fdopen(fd, 'w')
         f.write(pyfile)
         f.close()
+        # Unlink the file
         cl = PyFileConfigLoader(fname)
         config = cl.load_config()
         self.assertEquals(config.A, 10)
@@ -58,12 +59,12 b' class TestArgParseCL(TestCase):'
     def test_basic(self):
 
         class MyLoader(ArgParseConfigLoader):
-            arguments = [
+            arguments = (
                 (('-f','--foo'), dict(dest='FOO', type=str)),
                 (('-b',), dict(dest='BAR', type=int)),
                 (('-n',), dict(dest='N', action='store_true')),
                 (('BAM',), dict(type=str))
-            ]
+            )
 
         cl = MyLoader()
         config = cl.load_config('-f hi -b 10 -n wow'.split())

IPython/core/application.py

@@ -32,17 +32,19 b' Questions:'
 
 
 * Can we limit ourselves to 1 config file or do we want to have a sequence
-  of them like IPYTHONDIR->RUNTIMEDIR->CWD?
+  of them like IPYTHONDIR->RUNTIMEDIR->CWD? [1]
 * Do we need a debug mode that has custom exception handling and can drop
-  into pdb upno startup?
+  into pdb upno startup? N
 * Do we need to use an OutputTrap to capture output and then present it
-  to a user if startup fails?
+  to a user if startup fails? N
 * Do we want the location of the config file(s) to be independent of the
   ipython/runtime dir or coupled to it.  In other words, can the user select
   a config file that is outside their runtime/ipython dir.  One model is 
   that we could have a very strict model of IPYTHONDIR=runtimed dir=
   dir used for all config.
-* Do we install default config files or not?
+* Do we install default config files or not? N
+
+* attempt needs to either clash or to die
 """
 
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