* Change working directory to the users home

  directory, that makes the file open/save
  dialogs more useable.
* Don't use argv emulator, its not needed
  for idle.

Mac/OSX/IDLE/idlemain.py

-import argvemulator
-from idlelib.PyShell import main
+"""
+Bootstrap script for IDLE as an application bundle.
+"""
 import sys, os
 
+from idlelib.PyShell import main
+
+# Change the current directory the user's home directory, that way we'll get
+# a more useful default location in the open/save dialogs.
+os.chdir(os.expanduser('~'))
+
+
 # Make sure sys.executable points to the python interpreter inside the
 # framework, instead of at the helper executable inside the application
 # bundle (the latter works, but doesn't allow access to the window server)
@@ -14,6 +22,6 @@ for idx, value in enumerate(sys.argv):
         del sys.argv[idx]
         break
 
-argvemulator.ArgvCollector().mainloop()
+#argvemulator.ArgvCollector().mainloop()
 if __name__ == '__main__':
     main()