hook: write hook output to ui fout descriptor output on stderr will also be written to ui.fout, unless sys.__stdout__ is passed in (see util.system), thus not changing previous behavior. This fixes a bug where hooks run through the command server would mess up with the command protocol, sending non-channeled data to the client.

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try:

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    import coverage

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    if hasattr(coverage, 'process_startup'):

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        coverage.process_startup()

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except ImportError:

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    pass