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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def reformat(self, snip, index=None):
 """Post process a preprocessed snippet."""

        if index is not None:
            return self.reformat(snip), len(self.reformat(snip[:index]))
        else:
            return self.repl_proc(snip, reformatting=True, log=False)