[issue27621] Finish IDLE Query dialog appearance and behavior.

[Mark Roseman]

Mark Roseman added the comment:

Just to follow up, both Windows and Linux the 'correct' behaviour seems to be that space or return activates the button with the current focus. Mac behaves differently in that return key always activates default button even if focus is on another button (and normally on Mac, buttons don't get focus).

I'll put together a patch that cleans up the layout and does the error label in dialog thing.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27621>
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