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Wraps a stream (such as stdout), acting as a transparent proxy for all
attribute access apart from method 'write()', which is delegated to our
Converter instance.
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Implements a 'write()' method which, on Windows, will strip ANSI character
sequences from the text, and if outputting to a tty, will convert them into
win32 function calls.
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True if this class is actually needed. If false, then the output
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Write the given text to our wrapped stream, stripping any ANSI
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calls.
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