def clean(self, line):
        m = self.RE.match(line)
        if line.strip() == ">":
            return ""
        elif m:
            return m.group(2)
        else:
            return line
Remove ``>`` from beginning of a line.
dataset/ETHPy150Open darcyliu/storyboard/markdown/blockprocessors.py/BlockQuoteProcessor.clean