Ned Deily added the comment:
Thanks for the report. It appears that all that is needed to trigger the hang
is any operation that invokes the IDLE EncodingMessage dialog ("Non-ASCII
found, yet no encoding declared. Add a line like [...]") in IOBinding.py during
a Save when IDLE is linked with the OS X Cocoa Tk 8.5 (or likely 8.6) as used
with the python.org 64-bin/32-bit 10.6+ installers, for example, just opening a
new edit window, inserting a non-ASCII character, and then trying to Save.
EncodingMessage subclasses the Tkinter SimpleDialog module and creates a new
Toplevel root; I seem to recall other problems like this in the past. The
problem is not seen with the older Carbon Tk 8.4 or with an X11 Tk on OS X.
----------
nosy: +ned.deily
stage: -> needs patch
title: IDLE - MacOS: freeze on non-ASCII save with open debugger -> IDLE hangs
on OS X with Cocoa Tk if encoding dialog is required during save
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<http://bugs.python.org/issue22897>
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