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"""Show help on a command or other topic.
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takes_options = [Option('long', 'show help on all commands')]
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aliases = ['?', '--help', '-?', '-h']
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def run(self, topic=None, long=False):
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if topic is None and long:
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class cmd_shell_complete(Command):
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"""Show appropriate completions for context.
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takes_args = ['context?']