[issue13582] IDLE and pythonw.exe stderr problem

[Terry J. Reedy]

Terry J. Reedy added the comment:

Todd, do you have a Mac to test this on?

This patch treat sending messages to a widget as a backup option. In 18318 I propose we make Idle a true gui app, with all messages other than 'No tkinter' handled by the gui. Console writing, when available, would then be a secondary option for those who want it. But in the meanwhile, I would like this or something like it applied.

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nosy: +Todd.Rovito

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