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        :param color: when to colorize output.  Valid values are
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           >>> yt = Term()
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           'spam xandz eggs'

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        :param end: the string to be postfixed onto matches
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        :param escape: a function that accepts a string and returns
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        appear to be *haystack* with each occurrence of the strings in
        *needles* in the given color.

        :param haystack: the string to be modified
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        appear to be *haystack* with each occurrence of the strings in
        *needles* highlighted in the given background color.

        :param haystack: the string to be modified
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