Class EmptyBlockProcessor

markdown/blockprocessors.py:550–574

Process blocks that are empty or start with an empty line.

class EmptyBlockProcessor(BlockProcessor):
    """ Process blocks that are empty or start with an empty line. """

    def test(self, parent: etree.Element, block: str) -> bool:
        return not block or block.startswith('\n')

    def run(self, parent: etree.Element, blocks: list[str]) -> None:
        block = blocks.pop(0)
        filler = '\n\n'
        if block:
            # Starts with empty line
            # Only replace a single line.
            filler = '\n'
            # Save the rest for later.
            theRest = block[1:]
            if theRest:
                # Add remaining lines to master blocks for later.
                blocks.insert(0, theRest)
        sibling = self.lastChild(parent)
        if (sibling is not None and sibling.tag == 'pre' and
           len(sibling) and sibling[0].tag == 'code'):
            # Last block is a code block. Append to preserve whitespace.
            sibling[0].text = util.AtomicString(
                '{}{}'.format(sibling[0].text, filler)
            )


class ReferenceProcessor(BlockProcessor):