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"""
Provides MathJax support for rendering Markdown with LaTeX to html.
"""
from mistletoe.html_renderer import HTMLRenderer
from mistletoe.latex_renderer import LaTeXRenderer
class MathJaxRenderer(HTMLRenderer, LaTeXRenderer):
"""
MRO will first look for render functions under HTMLRenderer,
then LaTeXRenderer.
"""
mathjax_src = '<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-MML-AM_CHTML"></script>\n'
def render_math(self, token):
"""
Ensure Math tokens are all enclosed in two dollar signs.
"""
if token.content.startswith('$$'):
return self.render_raw_text(token)
return '${}$'.format(self.render_raw_text(token))
def render_document(self, token):
"""
Append CDN link for MathJax to the end of <body>.
"""
return super().render_document(token) + self.mathjax_src
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