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"""
Sane List Extension for Python-Markdown
=======================================
Modify the behavior of Lists in Python-Markdown to act in a sane manor.
See <https://Python-Markdown.github.io/extensions/sane_lists>
for documentation.
Original code Copyright 2011 [Waylan Limberg](http://achinghead.com)
All changes Copyright 2011-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import OListProcessor, UListProcessor
import re
class SaneOListProcessor(OListProcessor):
SIBLING_TAGS = ['ol']
LAZY_OL = False
def __init__(self, parser):
super().__init__(parser)
self.CHILD_RE = re.compile(r'^[ ]{0,%d}((\d+\.))[ ]+(.*)' %
(self.tab_length - 1))
class SaneUListProcessor(UListProcessor):
SIBLING_TAGS = ['ul']
def __init__(self, parser):
super().__init__(parser)
self.CHILD_RE = re.compile(r'^[ ]{0,%d}(([*+-]))[ ]+(.*)' %
(self.tab_length - 1))
class SaneListExtension(Extension):
""" Add sane lists to Markdown. """
def extendMarkdown(self, md):
""" Override existing Processors. """
md.parser.blockprocessors.register(SaneOListProcessor(md.parser), 'olist', 40)
md.parser.blockprocessors.register(SaneUListProcessor(md.parser), 'ulist', 30)
def makeExtension(**kwargs): # pragma: no cover
return SaneListExtension(**kwargs)
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