[issue13153] IDLE 3.x on Windows exits when pasting non-BMP unicode

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

The revised PR appears to fix this and other issues, although the presence of astral chars in code being edited messes up tk's cursor positioning.  Assuming that this cannot be changed, we could add the the ability to replace astral chars with \U escapes.

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<https://bugs.python.org/issue13153>
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