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Fix CJK emphasis delimiter detection in scanDelims #387

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Fix CJK emphasis delimiter detection in scanDelims #387

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8 changes: 8 additions & 0 deletions markdown_it/rules_inline/state_inline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,14 @@ def scanDelims(self, start: int, canSplitWord: bool) -> Scanned:
isLastWhiteSpace = isWhiteSpace(ord(lastChar))
isNextWhiteSpace = isWhiteSpace(ord(nextChar))

# Treat CJK ideographs as punctuation for flanking delimiter checks
# so that emphasis works correctly in mixed CJK/ASCII contexts.
# e.g. 湾岸の**46%**を should render <strong>46%</strong>
if not isNextPunctChar and ord(nextChar) > 0x2E7F:
isNextPunctChar = True
if not isLastPunctChar and ord(lastChar) > 0x2E7F:
isLastPunctChar = True

left_flanking = not (
isNextWhiteSpace
or (isNextPunctChar and not (isLastWhiteSpace or isLastPunctChar))
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