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I tried the CVS version on a few platforms (Cygwin, Mac OS
X, Linux) and I found no problems with it. Also the Python
test suite didn't reveal any problems. Thanks for looking at
this patch. I really appreciate your 5-to-1 patch review offer.
To answer your question about the exit command, it may be an
attempt to replace Tcl's exit command, so that the Tcl
interpreter doesn't exit. But I don't know, really, I don't
use Tkinter much. My real interest is the PyOS_InputHook
event hook function, which I need to work correctly for a
scientific plotting package for Python. While working on a
separate patch involving PyOS_InputHook, I noticed that
Tkinter doesn't call the DisableEventHook problem. This led
me to the reference count problem.