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Support fenced_code optional lang trailer: '::' up to } or newline #977

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Support fenced_code optional lang trailer: '::' up to } or newline #977

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6 changes: 4 additions & 2 deletions markdown/extensions/fenced_code.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,13 +34,14 @@ class FencedBlockPreprocessor(Preprocessor):
FENCED_BLOCK_RE = re.compile(r'''
(?P<fence>^(?:~{3,}|`{3,}))[ ]* # Opening ``` or ~~~
(\{?\.?(?P<lang>[\w#.+-]*))?[ ]* # Optional {, and lang
(?P<lang2>::[^}\n]*)? # Optional lang trailer (up to } or NL)
# Optional highlight lines, single- or double-quote-delimited
(hl_lines=(?P<quot>"|')(?P<hl_lines>.*?)(?P=quot))?[ ]*
}?[ ]*\n # Optional closing }
(?P<code>.*?)(?<=\n)
(?P=fence)[ ]*$''', re.MULTILINE | re.DOTALL | re.VERBOSE)
CODE_WRAP = '<pre><code%s>%s</code></pre>'
LANG_TAG = ' class="%s"'
LANG_TAG = ' class="%s%s"'

def __init__(self, md):
super().__init__(md)
Expand All @@ -66,7 +67,8 @@ def run(self, lines):
if m:
lang = ''
if m.group('lang'):
lang = self.LANG_TAG % m.group('lang')
lang = self.LANG_TAG % (m.group('lang'), m.group(
'lang2') or '')

# If config is not empty, then the codehighlite extension
# is enabled, so we call it to highlight the code
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