[issue23220] Documents input/output effects of how IDLE runs user code

[Akira Li]

Akira Li added the comment:

IDLE can implement functionality similar to what colorama [1] module does on Windows: translate ANSI escape character sequences into corresponding GUI method calls.

For example, \b might be implemented using a .delete() call, \r using .mark_set(), etc.

[1] https://pypi.python.org/pypi/colorama

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nosy: +akira

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